INTERNATIONAL SOCIETY FOR SOIL MECHANICS AND GEOTECHNICAL ENGINEERING

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COMISION FEDERAL DE ELECTRICIDAD INSTITUTO MEXICANO DEL SEGURO SOCIAL

COMPAÑIA DE LUZ Y FUERZA DEL CENTRO, S. A. PETROLEOS MEXICANOS

DEPARTAMENTO DEL DISTRITO FEDERAL SECRETARIA DE COMUNICACIONES Y TRANSPORTES

FERROCARRILES NACIONALES DE MEXICO SECRETARIA DE OBRAS PUBLICAS

INSTITUTO DE INGENIERIA, U. N. A. M. SECRETARIA DE RECURSOS HIDRAULICOS

INSTITUTO MEXICANO DEL PETROLEO SECRETARIA DE SALUBRIDAD Y ASISTENCIA SEVENTH CONFERENCE SEPTIEME CONGRES

» ORGANIZING COMMITTEE COMITE ORGANISATEUR

ENRIQUE TAMEZ (Chairman) HECTOR M. CALDERON ANDRES CONESA EULALIO JUAREZ BADILLO EUGENIO LARIS LUIS RAMIREZ DE ARELLANO (Secretary) DANIEL RESENDIZ ALFONSO RICO VICTOR SAN MIGUEL LUIS VIEITÉZ

PAPERS SUBCOMMITTEE SOUS-COMITE DES MEMOIRES

DANIEL RESENDIZ (Chairman) Miss MAGDA GARCIA JESUS ALBERRO PABLO GIRAULT GABRIEL AUVINET RAUL J. MARSAL GERMAN FIGUEROA EDMUNDO MORENO CARLOS FLAMAND ALFONSO RICO

MAIN SESSIONS SUBCOMMITTEE SOUS-COMITE DES SEANCES PLENIERES

LUIS VIEITEZ (Chairman) JORGE GAMBOA PEDRO DE ALBA EDMUNDO MORENO ABRAHAM ELLSTEIN RICARDO SANCHEZ RAUL ESQUIVEL JUAN J. SCHMITTER

SPECIALTY SESSIONS SUBCOMMITTEE SOUS-COMITE DES SEANCES SPECIALES

ALFONSO RICO (Chairman) GABRIEL MORENO EMMANUEL ALCERRECA ELIGIO MUÑOZ SANTIAGO BARRAGAN JUAN OROZCO EDUARDO DE LA FUENTE JOSE J. QUINTERO HERMILO DEL CASTILLO MANUEL RANGEL CARLOS FERNANDEZ MATEO ROMAN ABEL FLORES ROBERTO SOSA RAUL FLORES FELIPE TECOTL GABRIEL GARCIA JAVIER TORIBIO MANUEL JARA GUILLERMO VILLEGAS

TECHNICAL VISITS SUBCOMMITTEE SOUS-COMITE DES VISITES TECHNIQUES

VICTOR SAN MIGUEL (Chairman) JAIME QUINTANA HUGO ACEVEDO HORACIO SANCHEZ GABRIEL AUVtNET JUAN J. SCHMITTER SALOMON GARZA RAMON TRAVADELLO WALTER PANIAGUA

5 TOURS OUTSIDE MEXICO CITY SUBCOMMITTEE SOUS-COMITE DES VOYAGES HORS DE MEXICO

EUGENIO LARIS (Chairman) JESUS IBARRA IGNACIO ELIZALDE RICARDO MEDINA RAUL GOMEZ FRANCISCO J. TAPIA FRANCISCO GOMEZ-PEREZ MARIANO TREJO

EXHIBITION OF EQUIPMENT SUBCOMMITTEE SOUS-COMITE DES EXPOSITIONS

HECTOR M. CALDERON (Chairman) HECTOR ANCIRA LINO VITE ARMANDO PRIETO

LOCAL PROMOTION SUBCOMMITTEE SOUS-COMITE DE INFORMATION DANS LE PAYS

EULALIO JUAREZ BADILLO

PUBLIC RELATIONS SUBCOMMITTEE SOUS-COMITE DE PRESSE ET PUBLICITE

FRANCISCO GOMEZ-PEREZ

SERVICES TO CONFERENCE MEMBERS SUBCOMMITTEE SOUS-COMITE DES SERVICES POUR LES CONGRESSISTES

FELIX ARREGUIN (Chairman) RAMON GRIJALVA ALBERTO BUZALI RAFAEL MENDEZ JORGE COLIN

PROGRAMMING PROGRAMMATION

LEONARDO RUIZ OCAMPO

COORDINATION COORDINATION

FERNANDO ESPINOSA

LADIES' PROGRAM SUBCOMMITTEE SOUS-COMITE DE PROGRAMME POUR LES DAMES

Mrs. YOLANDA TAMEZ Mrs. JOSEFINA RESENDIZ Mrs. SONIA ALCERRECA Mrs. CARMINA RICO Mrs. PATRICIA ESPINOSA Mrs. ALICIA ROSENBLUETH Mrs. MARIA INES GIRAULT Mrs. JOSEFINA RUIZ OCAMPO Mrs. MARI LU GONZALEZ Mrs. MARTA SOSA Mrs. OLGA HENTSCHEL Mrs. LOURDES SPRINGALL Mrs. CARMELA LARTIGUE Mrs. TERESA SPRINGALL Mrs. MARTA RAMIREZ DE ARELLANO

6 INTERNATIONAL SOCIETY FOR SOIL MECHANICS AND FOUNDATION ENGINEERING

SOCIETE INTERNATIONALE DE MECANIQUE DES SOLS ET DES TRAVAUX DE FONDATIONS

EXECUTIVE COMMITTEE COMITE EXECUTIF

President/Président L. BJERRUM Past Preiidents/Ancien Présidents A. CASAGRANDE A. W. SKEMPTON

Vice*Presidents/Vice- Preside nts

Afrìca/Afrique B. A. KANTEY Asia/Asie J. G. ZEITLEN Australasia/Australasie D. H. TROLLOPE Europe/Europe J. BRINCH HANSEN (t) North America/Amérique du Nord W. J. TURNBULL South America/Amérique du Sud 0 . MORETTO

SecretBry/Secrétaire J. K. T. L. NASH

ADDRESSES OF NATIONAL COMMITTEES ADRESSES DES COMITES NATIONAUX

ARGENTINA/ARGENTINE BULGARIA/BULGARIE

The Secretary, The Secretary, Sociedad Argentina de Mecánica de Suelos, National Committee of Soil Mechanics and Foundation Casilla de Correo 4064, Buenos Aires Engineering, 35 Latinka, Sofia 13, AUSTRALIA/AUSTRALIE CANADA The Secretary, Australian National Committee on Soil Mechanics and Foundation The Secretary, Engineering, Associate Committee on Geotechnical Research, The Institution of Engineers, Australia National Research Council, Science House, Division of Building Research, 157 Gloucester & Essex Streets, Ottawa 7, Ontario Sydney, N. S. W. 2000 CHINA/CHINE AUSTRIA/AUTRICHE The Secretary, The Secretary, Chinese National Committee of Soil Mechanics and Österreichisches Nationalkomrtee (im OIAV) Foundation Engineering, der Internationalen Gesellschaft für Bodenmechanik c/o The Chinese Society of Civil Engineering, un Grundbau, Cheh Kung Chuan Street No. 19, Eschenbechgasse 9, A 1010, Wien West District, Peking,

BELGI UM/BE LGIQUE COLOMBIA/COLOMBIE Le Secrétaire Groupement Belge de la Société Internationale de Mécanique Secretarlo des Sols et des Travaux de Fondations, Comité Colombiano de Mecénice de Suelos y Cimentaciones, 175 Avenue des Aubépines, Bruxelles 18, Apartado Aèreo 21314, Bogota.

BRAZIL/B RESIL CZECHOSLOVAKIA/TCHECOSLOVAOUIE The Secretary, The Secretary, Asociacào Brasiletra de Mecánica dos Sólos, Czechoslovak Committee for Soil Mechanics and Foundation Rua Joaquim Nabuco, 254 - ap. 201, Engineering, of the Czechoslovak Academy of Sciences, Rio de Janeiro, Guanabara, ZC-37, Vysehradski 49, Praha 2,

7 DENMARK/D ANEMARK MEXICO/MEXIQUE The Secretary, The Secretary, Danish Society oí Soil Mechanics and Foundation Engineering, Sociedad Mexicana de Mecánica de Suelos. A. C., Danmarks Ingenidrakademi, Tacuba No. 5-23, 10 Oster Voldgade, 1350 Copenhagen K, Apartado Postal 8200, México 1, D. F.,

ECUADOR/EQUATEUR MOROCCO/MAROC

Secretario Le Secrétaire, Sociedad Ecuatoriana de Suelos y Cimentaciones Comité Marocain de la Mécanique des Sois et des Roches. Casilla No. 3442, Guayaquil 25 rue d'Azilal, Casablanca,

FINLAND/FINLANDE NETHERLANDS/PAYS - BAS

The Secretary, The Secretary. Finnish Society of Soil Mechanics and Foundation Engineering, Netherlands Society for Soil Mechanics and Foundation Engineering, c/o Helsingin Kaupungin Kiinteistovirasto, Koningdtade 25, The Hague, Geoteknillinen Toimisto, Yrjónkatu 21 b A, Helsinki 10, NEW ZEALAND/NOUVELLE-ZELANDE

FRANCE The Secretary, New Zeeland National Society of Soil Mechanics and Foundation Le Secrétaire, Engineering, Comité Français de la Mécanique des Sols et des Fondations, Ministry of Works, Head Office, 44 rue Copernic, Paris 16e, P. O. Box 12-041, Wellington North, GERMANY/ALLEMAGNE NORWAY/NORVEGE The Secretary, Deutsche Gesellschaft fur Erd-und Grundbau e. V., The Secretary, 43 Essen, Kronprinzenstrasse 35a, Norwegian Geotechnical Society, Forskningsvn 1, Oslo 3, GREECE/GRECE PERU/PEROU The Secretary, Secretario Hellenic Society of Soil Mechanics and Foundation Engineering, Comité Peruano de Mecánica de Suelos, Fundaciones y Mecánica 42 Patission Street (Polytechneion), Athens (147), de Rocas, HUNGARY/HONGRIE Apartado 5812, Lima, The Secretary, Hungarian National Group of Soil Mechanics and Foundation POLAND/POLOGNE Engineering, The Secretary, Budapest XI, Müegyetem-rakpart 3, Naczelna Organizacja Techniczna w Polsce, Polski Komitet Geotechniki i Robot Podziemnych. INDIA/INDE Czackiego 3/5, Warszawa, The Secretary, PORTUGAL Indian National Society of Soil Mechanics and Foundation Engineering, The Secretary, Curzon Road Barracks, Bay No. 2W-4, New Delhi 1, Portuguesa Group of Soil Mechanics and Rock Mechanics, Ministério das Obras Públicas, IR ELAND/I R LANDE Laboratorio Nacional de Engenharia Civil, Av. do Brasil, Lisbon, The Secretary, Irish National Society of Soil Mechanics and Foundation Engineering, REPUBLIC OF SOUTH AFRICA/REPUBLIQUE DE L'AFRIQUE DU SUD Institution of Civil Engineers of Ireland, The Secretary, Intercontinental, Ballsbridge, Dublin 4, Division of Soil Mechanics and Foundation Engineering, The South African Institution of Civil Engineers, ISRAEL/ISRAEL P. O. Box 3965, Cape Town

The Secretary, RHODESIA/RHODESIE Israel Society of Soil Mechanics and Foundation Engineering, c/o Association of Engineers and Architects in Israel, The Secretary, 200 Dizengoff Road, Tel Aviv, P. O. B. 3082 Geotechnical Division, The Rhodesian Institution of Engineers, ITALY/ITALIE P. O. Box 660, Salisbury

SPAIN/ESPAGNE The Secretary, Associazione Geotecnica Italiana, Secretario Via G. B. Martini, n. 7, Sociedad Española de Mecánica del Suelo, c/o Enel, 00198, Roma Instituto Eduardo Torroja de la Construcción y del Cemento, JAPAN/JAPON Costillares-Chamartin, Apartado 19,002, Madrid 16,

The Secretary, SWEDEN/SUEDE Japanese Society of Soil Mechanics and Foundation Engineering, The Secretary, To-a Bekkan Building, 13-5, Itchome, Swedish Geotechnical Society, Nishi-Shinbashi, Minato-Ku, Tokyo, Banérgatan 16, Stockholm No. 1,

8 SWITZERLAND/SUISSE U. S. S. R./U. R. S. S.

The Secretary, The President, Société Suisse de Mécanique des Sols et des Travaux de Fondations, USSR National Society for Soil Mechanics and Foundation Engineering, rue de Genfre 67, 1004 Lausanne, GOSSTROY USSR, Marx Prospect 4, Moscow K-25, THAILAND/THAI LANDE

The Secretary, UNITED STATES OF AMERICA/ETATS-UNIS D'AMERIQUE The Southeast Asian Society of Soil Engineering, The Secretary, c/o The Asian Institute of Technology, U. S. National Committee for ISSMFE, P. 0 . Box 2754, Bangkok, Room 1 - 330, Masachusetts Institute of Technology, TURKEY/TURQUIE Cambridge, Mass 02139, The Secretary, Turkish Group of Soil Mechanics, VENEZUELA/VENEZUELA Research Institution for Soil Mechanics of the Technical University Secretario, of Istanbul, Sociedad Venezolana de Mecánica del Suelo e Ingeniería de Fundaciones, Istanbul, Apartado 4074, Carmelitas, Caracas, UNITED KINGDOM/ROYAUME-UNI YUGOS LAVIA/YOUGOSLAVIE The Secretary, British Geotechnical Society. The Secretary, c/o The Institution of Civil Engineers, Yugoslav Society of Soil Mechanics and Foundation Engineering, Great George Street, Lonton S. W. 1, 56 Savska, Zagres,

9 LIST OF DONORS LISTE DES DONATEURS

A. C. E. INGENIEROS CONSULTORES Y CONSTRUCTORES, S. A. ACEROS ECATEPEC ACOSA, S. A. ALTOS HORNOS DE MEXICO, S. A. A. Q. INDUSTRIAL, S. A. BUFETE INDUSTRIAL DISEÑOS Y PROYECTOS, S. A. CAMINOS Y URBANIZACIONES, S. A. CASA VALENTIN, S. A. CIMENTACIONES DE MEXICO, S. A. CIMENTACIONES MEXICANAS, S. A. CIMENTACIONES Y EDIFICACIONES. S. A. COMERCIAL AUTOMOTRIZ MEXICANA, S. A. COMPAÑIA CONSTRUCTORA REGIONAL DEL BRAVO, S. A. COMPAÑIA DUPONT, S. A. da C. V. COMPAÑIA EXPLOTADORA DEL ISTMO, S. A. COMPAÑIA FUNDIDORA DE FIERRO Y ACERO DE MONTERREY, S. A. COMPAÑIA MEXICANA AEROFOTO, S. A. CONCRETOS ALTA RESISTENCIA, S. A. da C. V. CONSORCIO JOVI, S. A. CONSTRUCCIONES, CONDUCCIONES Y PAVIMENTOS, S. A. CONSTRUCCIONES DE MEXICO, S. A. da C. V. CONSTRUCTORA BALLESTEROS, S. A. CONSTRUCTORA DAROEL, S. A. CONSTRUCTORA DEL VALLE DEL FUERTE, S. A. CONSTRUCTORA DE LA TORRE, S. A. CONSTRUCTORA ESTRELLA, S. A. CONSTRUCTORA EL GUADIANA, S. A. de C. V. CONSTRUCTORA OCIMEX, S. A. CONSULTEC INGENIEROS, S. A. CHAPULTEPEC, S. A. INGENIEROS CONSTRUCTORES CHRISTENSEN DIAMOND PRODUCTS DE MEXICO, S. A. DIRAC, S. C. DISEÑOS Y CONSTRUCCIONES, S. A. DISTRIBUIDORA GES..S. A. EMPRESA DE CONSTRUCCIONES GENERALES,( S. A. ESTRUCTURAS Y CIMENTACIONES, S. A. ESTUDIOS Y PROYECTOS, S. A. FERRETERA ANAHUAC, S. A. FONDO DE FOMENTO EDUCATIVO GEOSOL, S. A. GEOTEC. S. A. ICOS DE MEXICO, S. A. INDUSTRIA ELECTRICA DE MEXICO, S. A. INGENIERIA DE CONTROL DE MATERIALES, S. A. INGENIERIA DE SISTEMAS DE TRANSPORTE METROPOLITANO, S. A. INGENIERIA DE SUELOS, S. A. INGENIERIA EXPERIMENTAL. S. A. INGENIEROS CIVILES ASOCIADOS, S. A. INGENIEROS Y ARQUITECTOS, S. A. JOY MANUFACTURING DE MEXICO, S. A. da C. V. LABORATORIOS DE INGENIERIA Y ARQUITECTURA, S. A. LONGYEAR DE MEXICO, S. A. MEXICO, COMPAÑIA CONSTRUCTORA, S. A. PAPELERIA ESCALA, S. A. PARSONS Y VICTORIA, S. A. PENICHE ECHANOVE ALBERTO PLANEACION DE LA CONSTRUCCION, S. A. PRESFORZADOS MEXICANOS, S. A. PRESFORZADOS NACIONALES, S. A. PROMOTORA Y CONSTRUCTORA, S. A. PROYECTOS Y ADMINISTRACIONES, S. A. SOLUM, S. A. STAG, S. A.

II LIST OF MEMBERS OF THE CONFERENCE LISTE DES CONGRESSISTES

ALGERIA/ALGERIE TORRES, F. L., Universidad de Rosario, Santa Fé 778, Of. 5, Rosario (Peía Sta. Fé) CAMER LO, J., S. C. E. T., 8 rue Sergent Addoun Sra. Carmen de Torres DAHEUR, A., Laboratoire National du Bâtiment et des Travaux Publics TREVISAN, S. J>, Universidad Nacional de la Plata, Diagonal 74 No. 2831 Route des Quatre - Canons La Plata Mme. A. Daheur Sra. Maria Marta N. de Trevisan DRENEAU, A., Laboratoire National des Travaux Publics et du Bâtiment VARDE, O. A., Luis Saenz Peña 250^o. Piso, Buenos Aires Route des 4 Canons Sra. Varde Mme. Dreneau VERCELLI, H. J., Universidad de Rosario, Santa Fé 778, Of. 5, Rosario NADEAU, J. C., Laboratoire National des Travaux Publics et du Bâtiment (Pcia. Sta. Fé) Route des 4 Canons Sra. Maria Rosa de Vercelli Mme. Nadeau VIDELA, E. P., Universidad Tecnológica Nacional, Calle 118 No. 1587 La Piata, Buenos Aires ANGOLA WIELAND, R. E., Universidad Nacional de Córdoba, Monteagudo 46, MARTINHO, F. M. J., Laboratorio de Engenharia de Angola, Caixa Córdoba Postal No. 6500, Luanda • Angola ZALAZAR, L. M., Universidad Nacional del Sur, Libertad 745, Buenos NOVAIS-F ER REIRA, H., Laboratòrio de Engenharia de Angola, Caixa Aires Postal No. 6500, Luanda - Angola ZARAZAGA, C. H., Agua y Energía Eléctrica, Mariano Moreno 88 Termas Río Hondo, (Sgo. del Estero) ARGENTINA/ARGENTINE Sra. Judith E. R. de Zarazaga

ARCE, C. M., Universidad de Buenos Aires, General Venancio Flores 531 AUSTRALIA/AUSTRALIE Oep. 10, Buenos Aires Sra. E. C. de Arce AITCHISON, G.D., Commonwealth Scientific & Industrial Research Organiz­ BOLOGNESI, A. J. L., Universidad de Buenos Aires, Luis Saenz Peña 250 ation, Division of Soil Mechanics, P. 0 . Box 54, Mount Waverley, 6o. Piso, Buenos Aires Victoria, 3149 COMPAGNUCCI, D. J., U.N.S. y U.T.N., Santa Fé 597, Bahia Bianca Mrs. J. C. Aitchison Buenos Aires ANDREWS, D. C., C. S. I. R. 0 ., P. 0 . Box 54, Mount Waverley, GOLDEMBERG, J. J„ Laboratorios Cientec, Güemes 2947 • Bo. Piso Victoria Depto. 17, Buenos Aires COFFEY, D. D., Coffey and Hollings Worth, 2 Torres Place, St. Ives, Sra. Elisa M. de Goldemberg N. S. W. Australia 2075 GOMEZ, O. I., Universidad Nacional del Sur, Tte. Farias 1435, Bahia Mrs. Coffey Bianca, Buenos Aires COOKE, A. G., Highways Department, Box 19, P. O. Walkerville, South GONZALEZ, C. G. A., Universidad Nacional del Sur, 25 de Mayo 481 Australia 5081 Bahia Bianca, Buenos Aires Mrs. Cooke GURI, R. J. L., Universidad de Córdoba, Sarmiento 1668, Ciudad de DAVIS, E. H., University of Sydney, School o Civil Engineering, Sydney, Córdoba, Buenos Aires N. S. W. 2006 Sra. Lucía de Gurí GERRARD, C. M., CSIRO, Division of Soil Mechanics, P. 0 . Box 54, MEDICI, J. C., Laboratorios Cientec, Rosario 552, Piso 16, Dept. "A" Mount Waverley, Victoria Buenos Aires HOLLINGSWORTH, P. C., Coffey & Hollingsworth, 112 Bowen Street, Sra. Raquel Medici Brisbane, 4000, Queensland MOLL, L., Universidad Nacional de Buenos Aires, Buenos Aires 124-3o. Piso Mrs. A. M. Hollingsworth Esc. 127, Córdoba MACLEOD, J. H., Foundation Engineering, 147 Eastern Rd. South MOLL, L. L., Universidad Nacional de Córdoba, Av. Colón No. 116 Melbourne, Victoria 3205 Córdoba Mrs. Janice Macleod MORETTO, 0 ., Universidad La Plata, Luis Saenz Peña 250, Buenos Aires PINKERTON, I. L., Snowy Mountains Hydro-Electric., Authority, Box 332, Sra. Nelly A. P. Moretto P. 0 . Cooma North, N. S. W. NADEO, J. R., Universidad Tecnológica Nacional, Calle 34 No. 144 POULOS, H. G., University of Sydney, Dept, of Civil Engineering, La Plata, Buenos Aires Sydney N. S. W. 2006 NUÑEZ, E., Universidad de Buenos Aires, Luis Saenz Peña 250 • 6o. Piso RICHARDS, B. G., Division of Soil Mechanics, CSIRO., 38 Bennett Ave., Buenos Aires Mt. Waverley, 3149, Victoria REGINATTO, A. R., Universidad Nacional de Córdoba, e INCONAS, RODWAY, B. L., Australian Commonwealth, Dept, of Works Confederation Ambrosio Olmos 634, Córdoba of British Industry 21 Tothill St. London SW1, England Sra. Emilia E. de Reginatto TROLLOPE, D. H., P. 0 . Box 999, Townsville, Queensland, Australia 4810

I 3 WOOD, M., George Wimpey & Co. Ltd., 38 Valentía Avenue, Lugarno N.S.W, PACHECO, S. F., Instituto de Pesquisas Tecnológicas, Caixa Postal 7141, 2210 Seo Paulo, S. P. YEATES, J. A., Coffey and Hollingsworth, 1503 Malvern Road, Gien Iris., Mrs Bert ha Pacheco Silva 3148 Victoria PENNA DE CARVALHO, J. P., University of Bahia fit Highway Dept. R. Comend. José A. Ferreira 9, Apt. 11, (Gracia), Salvador, Bahia AUSTRIA/AUTR1CHE QUEIROZ, L A., Hidroservice, Consulting Engineers, Ltd. Avenida faulista, 726 » 16o. andar, Sáo Paulo - S. P. BOROWICKA, H., Technische Hochschule Wien, A - 1190 Wien Armbrus Sra. C. M. Queiroz ttergasse 16 ROCHER, J. A., Rodio, S. A., Av. Rui Barbosa 910 Apt. 1402, Rio de DOLLERL, A., Stadtbauamt Wien Magistrat der Stadt Wien, Anton Janeiro, (ZC41) - GB - Kriegerpsse 191, 1238 Wien SOUSA PINTO, C., University of Säo Paulo Brasil, I. P. T. Caixa Postal KIENBERGER, H., Technische Hochschule, Rechbauestr. 12, Graz 7141, Säo Paulo Brasil KOLLER, R. Stadtbauamt Wien Magistrat der Stadt Wien Techn. Mrs Maria Thereza de Sousa Pinto Hoschschule Wien, PointengBsse 11-6, 1170 Vienna VARGAS, M., University of Säo Paulo, Largo Arouche 24 - 6o. andar, MAKOVEC, F., Osten, Donaukraft Werke AG., Schinaweisg. 17 A-1140 Säo Paulo Wien Mrs Ma. Helena Vergas VEDER, C., Technische Hochschule, Rechbeuerstrasse 12, A-8o1o Graz

BELGIUM/BELGIQUE BULGARIA/BULGARIE

BARBIEUX, I., SOLETANCHE, Avenida Libertador, Residencias Venezuela, STEFANOFF. G., UL. Latinka 35, Sofia 13 Apto. 7 B, El Bosque, Caracas CAPELLE, E. A., Bureau GECITRA, 137 A, Avenue du Haras, Brussels 15 DE BEER, E. E. M. J. A., Université de Gand, Rijksinstituut Voor CANADA Grondmechanica, Keizerlijke Plaats 3, Aalst Mme. E. De Beer ADAMS, J. I., Ontario Hydro Research Laboratory, 200 Kipling Ave. S., Mlle. Christiane De Bear Toronto 18, Ontario GILSOUL, G., Société Belge des Betons, Rue Joseph Gos 11, Braine Mrs. Marpret Adams L'Alleud AGENSKY, N., Racey, MacCallum & Bluteau Ltd., 5690 Monkland Avenue, HUSTIN, P., Service Special d'Etudes de la Stib, 34, Rue de Stassart, Montreal 261, Quebec Bruxelles 5 AITCIN, P. C., University de Sherbrooke, Dept, of Civil Engineering, NUYENS, J., Univvsité Libre de Bruxelles, 54 Av. Du Pesage, Bruxelles 5 Sherbrooke, P. Q. PAQUAY, J., Université de Liège, Institut du Génie Civil, 6, Quai BAIKIE, L. D., Materials Testing Laboratories Ltd., 4432A Namaka Cres NW. Banning-Liège Celpry 47, Alberta Mme. Paquay BERGER, H., Universität Stuttgart, Hessenlauweg 14, 7000 Stuttgart RENARD, J. L., 145 • Av. du Domaine, Bruxelles 19. Mrs. Christa Berger REYNTJENS, P. G., Université de Louvain, 35 Tiense Vast, Kessel • LO BERNARD, G. W., Bernard & Hogpn Engineering & Testing Ltd., 10429 Mme. Reyntjens 79 Avenue, Edmonton 6D, Alberta ROISIN, V. G., Avenue des Aubépines 175 - A, Bruxelles 18 BOZOZUK, M., National Research Council., 691 Sandra Ave. Ottawa 8, Mme. Roisin Ontario VANDER LINDEN, J., Pieux Frenki, 31, Rue Montoyer, Bruxelles 4 BRADSHAW, T. J., H. G. Acres & Company Limited, 1259 Dorchester Road Mme. Vender Linden Niagara Falls, Ontario VAN WAMBEKE, A. E. V., Ecole Royale Militaire, 45 rue Knapen, Bruxelles 4 BREDESON, L , John D. Paterson & Associates, 1479 Laperriere Ave. Ottawa 3, Ontario Mme. Christiane Van Wambeke Mrs. Sylvia Bredeson VINEL, C., Electrobel, S. A., Ave. de la Tenderie 35, Bruxelles 17 Miss Margo Green WALLAYS, M., Pieux Franki, Rue Grétry 196, Liège Miss Janet Muirheed BRASI L/BRESIL BRZEZINSKI, L S., GEOCON LTD., 5855 N.D.G., Ave. Montreal 28, Que. BARATA, F. E., Federal Universlty of Rio de Janeiro, Rúa Campos Sales 102 Mrs. Brzezindci Apt. 102, ZC-10, Rio Guanabara BUCK, G. E., R. C. Thurber & Associates, 628 Dupplin Road, Victoria,B.C. Mrs. Barata Mrs. Brigitte Buck DA COSTA NUNES, A. J., Escola de Engenharia Tecnosolo, S. A., Rua BYRNE, P. M., University of British Columbia, Dept. of Civil Engineering Barao de Sêo Felix 202 ZC05, Rio de Janeiro, Guanabara Vancouver 8 B. C. DECOURT, L., Baaconsult, Rua Boa Vista 63 4o. Piso, Säo Paulo, S. P., CAMPANELLA, R. G., University of British Columbia, Dept, of Civil DE MEDINA, J., Federal University of Rio de Janeiro, (COPPE • UFRJ). Engineering, University of B. C. Vancouver 8, B. C. Rua República do Perú 336/401, Rio de Janeiro, Guanabara CLEGG, B., University of Western Australia, Ellis Hall, Queens University DE MELLO, V. F. B., Univvsity of Sao Paulo, Geoconsult, Rua Frederico Kingston, Ontario Chopin 190, Z. P. 9, Säo Paulo, S. P., CONLON, R. J., H. G. Acres & Company Limited, 1259 Dorchester Road Mn. Maria Luiza De Mello Niagara Falls, Ontario DE OLIVEIRA, H. G., Hidroservice Consulting Enginevs, Avenida Paulista COOK, P. M., Cook Pickering & Doyle Ltd., 1893 Triumph Street, 726 • 16o. Andar, Sio Paulo 3, S. P. Vancouver 6, B. C, FERRAZ, N., Geosonda S. A., Av. Ipiranp, 890 - 4o. andar. Cj. B., Säo CRAWFORD, C. B., National Research Council, 198 Cluny Street, Ottawa, Paulo 2, S. P. Ontario Mrs. Ferraz Mrs. Crawford GOLOMBEK, S., Mackenzie University, Consultrix S/C Ltda., Rua Seminario CULLEY, R. W., Department of Hij^iways, Smith St. & 7th Avenue, 199 - 1o. Andar, Cj/11 - S. P. 1, Säo PbuIo Regina, Sask. GRAJEDA, M. J. A., Hidroswice Ltda., Av. Paulista No. 726 - 16 ander, DE VOS, B. J., R. M. Hardy & Assoc. Ltd., 11 Sycamore Street. P. O. Box Sao Paulo 690, Sherwood Park, Alberta MACHADO, J., Instituto de Pesquisas Tecnológicas, Ca i xa Postal 7141, Mrs. Eunice, De Vos Seo Paulo DOELL, B. C., Ontario Dept, of Lands & Forests, 235 Dunview Ave. NAPOLES-NETO, D. F. A., Instituto de Pesquisas Tecnológicas, Caixa Postal Willowdale 441, Ontario 7141 • Rua Henrique Schaumann 1196, Sao Paulo, S. P. DOMASCHUK, L , University of Manitoba, Civil Engineering Dept., Winnipeg, Mrs. Napoles-Neto Manitoba I4 DREES, F. K., AMC Construction Ltd., 308 Brent Building, Regina, LEFEBVRE, G., Université Laval Department de Génie Civil, 768 De Sadcatchewan Longpré 1, Ste-Foy, Quebec 10 P. Q. Mrs. Drees LEFEBVRE, L. M., Les Laboratories Ville Marie (nc., 631 Carré Dufault, EDEN, W., National Research Council, 850 Chapman Blvd., Ottawa 6, Ste-Théròse en Haut, Québec Ontario LE LIEVRE, B., University of Waterloo, Waterloo, Ontario EMERY, J. J., University of British Columbia, Civil Engineering Department, Mrs. Le Lievre Vancouver 8, B. C. LO, K. Y., Laval University, Department of Civil Engineering, Quebec 10, FINN, W. D. L , University of British Columbia, Dept, of Civil Engineering, Quebec Vancouver 8 B. C. LOCKER, G., Royal Military College, Civil Engineering Dept., Kingston, FORATI, J., Pahlavi University School of Engineering, Shiraz, Iran, Ontario Mrs. Forati LOISELLE, A. A., Ecole Polytechnique, 2500 Ave. Marie Guyard. Montreal, FRAIKIN, L A., Franki Foundation Company, 103 Park Avenue, New York, Québec N .Y . 10017, U.S. A. Mrs. Raymonde Loisalle Mrs. Mary Fraikin MAC DONALD, C. D., Warnock Hersey International Ltd., 4 MacDonald FREDLUND, D. G., University of Saskatchewan, 1714 East Heights, Ave., Dartmouth, Nova Scotia Sadcatoon, Saskatchewan MAC DONALD, D. H., H. G. Acres & Co. Ltd., Niagara Falls, Ontario Mrs. Fredlund Mrs. B. C. Mac Donald GADSBY, J. W., CBA Engineering Ltd., 4545 Main Street, Vancouver MARCI L, D., Roctest Ltd., 135 Regent, St-Lambert, Québec 10, B. C. MATICH, M. A. J., Geocon Ltd., 79 Bywood Drive, Islington, Ontario Mrs. Elspeth Gadsby MATYAS, E. L., University of Waterloo, 355 Cambria Place, Waterloo, GASS, A. A., H. O. Golder & Associates Ltd., 3151 Wharton Way. Ontario Cooksville, Ontario Mrs. E. L. Matyas GOLDER, H. Q., H. Q. Golder & Associates Ltd., 3151 Wharton Way, MCFARLANE, H. W., University of New Brunswick, 170 Canada St., Cooksville, Ontario Marysville N. B. Mrs. Molly Golder Mrs. McFarlane GORMAN, G. A., Ontario Hydro, 30 Sanderling Place, Don Mills, Ontario, MCROSTIE,G., 393 Bell St. Ottawa Mrs. Theresa Gorman MEYERHOF, G. G., Nova Scotia Technical College, 889 Beaufort Avenue GRICE, R. H., McGill University, Montreal 33 Lakeshore Rd. Beaconsfield Halifax, N. S. Quebec Mrs. Elizabeth Meyerhof HAMILTON, J. J., Division of Building Research, National Research Council, MICKLEBOROUGH, B. W., Dept, of Highways, Administration Bldg., Seskatoon, Saskatchewan Regina, Sask. Mrs. Sharee Hamilton MILLIGAN, V.. H. Q. Golder & Associates Ltd., 3151 Wharton Way, HARDY, R. M., The University of Alberta, Edmonton 7, Alberta Cooksville, Ontario HARLAND, W. P., Caseco Consultants, 1200 West Pender St., Vancouver, Mrs. Mary Ann Milligan B. C. MILOVIC, D., Université de Sherbrooke, Dept, of Civil Engineering, HAWSON, H., Wamock Hersey International Ltd., 1 Hillview Avenue, Sherbrooke, P. Q. Kingston 10, Jamaica, West Indies MORGENSTERN, N. R., University of Alberta, Dept, of Civil Engineering, Mrs. Anne Hawson Edmonton, Alberta Mrs. Catherine Hawson Mrs. Patricia Morgenstern HILLIS, S. F., Tams International, Tabela Dam, Project, Hazara, W. Pakistan NOBLE, C. A., Memorial Univ, of Newfoundland, St. John's. Newfoundland HOLUB EC, I., Univvsity of Watvloo, Dept, of Civil Engineering, Waterloo, Mrs. C. A. Noble Ontario NOVAK, M., University of Western Ontario., Richmond Str. 1201, Ap. 211, Mrs. Holubec London, Ontario INSLEY, A., R. C. Thurber and Associates, 628 Dupplin Road., Victoria Mrs. Novak B. C. OLSEN, M. T., Ripley Klohn & Leonoff International Ltd., 7878 Gray Ave., Mrs, Insley South Burnaby, British Columbia ISMAILY, S. A., Dept, of Public Works of Canada, 80 Pleasant Park Road, OSLER, J. C., McGill University, Montreel 145 Rowan Ave., Beaconsfield , Ottawa 8, Ontario Quebec IVERSON, N. L., P.F.R.A., Dept, of Regional Economic Expansion, Mrs. Jeanne F. Oslw P. O. Box 908, Saskatoon, Sask. PEACOCK, W. H., University of California I.T.T.E., 1301 South 46 St. JOURNEAUX, N. L., Wamock • Hersey International Ltd., 128 Elmslie St. Richmon California 948, U. S. A. Mo ht reel, Quebec Mrs. Peacock KEIL, L. D., 1259 Dorchester Road, Niagara Falls,Ontario PICKERING, D. J., Cook Pickering & Doyle Ltd., 1893 Triumph St., Mrs. P. A. Keil Vancouver 6, B. C. KENNEY, T. C., % Hartfield Road, Etobicoke, Ontario QUIGLEY, R. M., University of Western Ontario, Faculty of Engineering, Mrs. Margot Kenney London, Ontario KLOHN, E., Ripley Klohn and Leonoff Ltd., 4629 Hagprt St., Vancouver READSHAW, E. E., Dept, of Highways, 950 Richmond, Victoria, B.C. 8, B. C. Mrs. Readshaw KORECK, H. W., Technische Hochschule München, Josef • von - Hirsch - St., ROBINSON, K. E., I.P.E.C., 568 Alpine Court North Vancouver B. C. 31,8033 Planegg, West Germany Mrs. Carol Ann Robinson Mrs. Helga Koreck ROSS, G. A., University of Calgary,-Dept, of Civil Engineering, Calgary 44 KRZYWICKI, H. R., William Trow Associates Ltd., 90 Milvan Drive, Mrs. Helen Ross Weston, Ontario RUEBENBAUER, J. M., Testing Laboratories, Dept, of Public Works, Mrs. Krzywicki 307 First Avenue, Ottawa 1, Ontario LABA, J. T., University of Windsor, 3553 Maisonneuve Ave., Windsor 21, Mrs. Zofia Ruebenbauer Ontario SAMSON, L., Terratech Ltée., 275 Benjamin-Hudon, Montreal 379 Mrs. Laba Mme. Samson LADANYI, B., Ecole Polytechnique, Dept, of Mining Enpg. C. P. 501 SANGREY, D. A., Queen's University, 773 Brookside Dr., Kingston, Snowdon, Montreal 248, P. Q. Ontario Mrs» Nevenka Ladanyi Mrs. Patricia Sangrey LA ROCHELLE, P., Université Laval, Département de Génie Civil, Ste-Foy, SCHEBESCH, D., H, G. Acres & Co. Ltd., Dorchester Rd„ Niagara Falls, Québec 10, P.Q. Ontario LAROCQUE, G. S., Hydro • Quebec, Tour de la Bourse (15*), Square SEBASTYAN, G. Y., Canadian Dept, of Transport, P. 0 . Box 2022 St., "D" Victoria, Montreal 115 Ottawa, Ontario I5 SINCLAIR, S. R., University of Alberta, 11810 • 73 Avenue, Edmonton, COLOMBIA/CO LOMBIE Alberta Mrs. Sinclair ARELLANO, P., Ingetec, S. A., Carrera 5 No. 93 A -10, Bogotá SIVAPATHAN, T., University of Waterloo, Dept, of Civil Engineering, BUENDIA, M. J., Energía Eléctrica de Bogotá, Apartado Aéreo 71*19, Wat e-loo, Ontario Bogotá SOWA, V. A., H. G. Acres & Co., Ltd., 1259 Dorchester Road, Niafpra Falls, Sra. Alba M., de Buendia Ontario CAJIAO, R., Ingetec, S. A., Carrera 9a. 17-24, Piso 5o., Bogotá, D. E. STERMAC. A. G., Department of Highways, 39 Kingsgarden Road, CARO, M. G., Universidad Nacional Ingetec, Apartado Aéreo 5099, Bogotá, Toronto 18, Ontario Sra. Lucia de Caro TAVENAS, F. A., 2158 Rue Boisjoli, Sillery, P. Q. MARQUEZ, G., Universidad Nacional de Colombia, Calle 40 A 81A-177, TAYLOR, E. M., Ontario Hydro, 127 Welland Avenue, Toronto 190, Medellin Ontario MATALLANA, A. G., Carrera 16 No. 85-12, Bogotá Mrs. Adrienne Taylor MATERON, N. B.( Corporación Autónoma Regional del Cauca-CVC, Carrera TAYLOR, H., International Power and Engineering Consultants, 1008 3a. 10-60 Of. 903, Cali Belmont Avenue, North Vancouver, B. C. ROMERO, M. V., Víctor Romwo & Cía. Ltda., Calle 64 No. 9-42, 0f.404, Mrs. Anna May Taylor Bogotá. THOMPSON, 0 ., AMC Construction Ltd., 308 Brent Building, Regina. Sra. Romero Saskatchewan SAENZ, P., Pablo Saenz & Cía. Ltda., Carrera 10 No. 27-27 Of. 605, Mrs. Thompson Edif. Bachúe, Bogotá TOWNSEND, D. L., Queen's University,Cartwright Point Kington, Ontario Sra. Amalia de Saenz Mrs. Joyce Townsend SHUK, T., Geocolombia, Ltda., Apartado Aéreo 7580, Bogotá 1, D. E. TREMBLAY, P. A., Technisol Inc., 3478 Chem. Ste-Fuy, Quebec 10, Que. SOCARRAS, R. M„ Geocolombia, Ltda., Calle 37 No. 8-43, Of. 310 TUBBESING, K., 3725 Bluebonnet Road, North Vancouver, B. C. Bogotá 1 Mrs. Helene Tubbesing VALENT, S. V., Telemac, 3835 Carlton Ave., Montreal COSTA RICA Mrs. Andree Valent VONAS, V. H., Lockwood, Andrews, Newnam, Inc., 6802 Leader. Houston, DE LA TORRE, A. T., Instituto Costarricense de Electricidad, Apartado Texas 77036, U. S. A. X X X II, San José WEBSTER, J. L., Caseco Consultants, 1200 W. Pender St., Vancouver 1, B. C. LARA, E. R., Instituto Costarricense de Electricidad, Apartado XX X II, WHITE, O. L., University of Waterloo, Canada, CSIRO, Div. of Soil Mechanics, San José P. 0 . Box 54, Mt. Waverley, Victoria 3149, Australia SITTENFELD, M., Universidad de Costa Rica, Apartado 1034, San José Mrs. Elizabeth White WHITE, W. L. G., William Trow Associates Limited, 16 Belfast Street St., John's, Newfoundland CZECHOSLOVAKIA/TCHECOSLOVAQUIE Mrs. Shirley E. White WILSON, N., McMaster University, Dept, of Civil Engineering & Eng. Mech., BAZANT, Z., Czech Technical University, Trojanova 13, Praha 2 Hamilton, Ontario WILSON, R. M., Golder, Brawner & Assoc. Ltd., 224 - W - 8th Avenue, Vancouver, B. C. DENMARK/DANEMARK Mrs. Lorraine Wilson ELBRO, O., Board of Maritime Works, Vandbygningsdirektoratet WINDISCH, E. J., Ecole Polytechnique, 108 Kindersley Avenue, Montreal Kampmannsgade 1, Copenhagen V 305, P. Q. HANSEN, B„ Danish Geotechnical Institute, Oster Voldgade 10, 1350 YONG, R. N., McGill University, Dept, of Civil Engineering and Applied Copenhagen K, Mechanics, Montreal, Quebec Mrs. Kirsten Hansen Mrs. Yong HESSNER, J., The Danish Geotechnical Institute, 28 ©rnekulsvej, 2920 Chartottenlund Mrs. Grete Hessner JACOBSEN, M.,Danmarks lngen¡4rakademi,Stnjbjerg 21,9400 Ndnesundby CEYLON/CEYLAN JENSEN, E. V., Geodan-Kampsax A/S, Dagmarhus 1553, Copenhagen Mrs. Ellen Jensen KATHIRGAMAN, K., KREBS, O. N., Danmarks Ingeni4rakademi, Bakkefaldet 52, 2840 Holte WARMING, C., Port of Copenhagen Auth., Skowej 82,2920 Charlottenlund

ECUADOR/EQUATEUR CHILE/CHILI ANDRADE, R. R. A., Universidad Católica de Guayaquil, Oficina Andrade DUJISIN, O. D., Román Díaz 221, Santiago Rodríguez, Apartado 4002, Guayaquil FONCEA, C., Casilla 1420, IDIEM Santiago CABRERA, S. A., Comité de Vialidad del Guayas, Rosendo Aviles 600 y GARCES, V. E., ENDESA, Casilla 1392, Santiago Bogotá, Casilla 4258 KORT, K. I., CORVI, Los Tres Antonios 269, Santiago CAMPOSANO, L. J. A., Comité de Vialidad del Guayas, Colón y Chile 803, MARTINEZ, F., Universidad de Chile, Fanor Velasco 13, Santiago 1 Box 4885, Guayaquil Sra. Ma. Virginia G. de Martínez Sra. Gloria de Camposano NAVARRO M. I., Román Díaz 221, Santiago CAZAR, C. P. V., Escuela Politécnica, Calle Venezuela 311, Quito NOGUERA, L. G., ENDESA, Casilla 1392, Santiago Sra. Isabel L. de Cazar Sra. Alejandrina Noguera MARIN, L., INERHI, Pedro Moncayo 1005, Casilla 3699, Guayaquil RETAMAL, G. E., Universidad de Chile, Casilla 1420, Santiago Sra. de Marín Sra. Gloria V. de Retamal NUQUES-COBO, J., Universidad de Guayaquil, Diagonal 306, URDESA, RUTLLANT, F. J., Universidad de Chile, Román Díaz 221, Santiago Casilla 3313, Guayaquil SANDOR, E. M., Sociedad SANDOR, Agustinas 853, Of. 503, Santiago Sra. Rosa de Nuques Sra. Sandor Eckerlín SIERRA, A. M., Medicina No. 41 Depto. 4, Copilco Universidad, TRONCOSO, J. H., Universidad Católica de Chile, San Crescente 160, México 20, D. F. Las Condes, Sector 10, Santiago Sra. Mercedes B. de Sierra

16 EL SALVADOR L'HERITEAU, MECASOL. 50 Rue Gérard, Paris X lllème Mme. L'Heritaau TABLAS, A. C.'INSUECO Laboratorios Ingeniería. 31 Calle Poniente No.410 LOUBATON, M., Electricité de France, 11, Rue Emile Richebourg 78-, San Salvador Bougival Sra. de Tablas MARCHAND, R., 19 Rue Alphonse de Neuville, 75 - Paris X V II*me WICK, W., Swissboring O verseas, A. P. 916, San Salvador Mme. Marchand MATHIAN, J., Compaigne Nationale du Rhône, 2, Rue André Bonin, 69 FINLAND/FINLANDE LYON, (4o.) ARHIPPAINEN, E., Imatran Voima Oakeyhtió, P. O. Box 10138, MAYER, A., 51 Rue Raynouard, Paris 16 Helsinki 10 MENARD, L., 35 Rue DE L'arbolete, Paris v*™ 6 HELENELUND, K. V., Technical University, Helsinki • Otaniemi, Mme. Menard JUHOLA, M. O.. Pohjavahvistus Oy, Lounaisváylá 2 a 4, Helsinki 20, NEGRE, E., Tecnosol, 153 Ave. Victor Hugo, Paris X V I*me Mrs. Juhola PAREZ, L. A., Pieux Paumelle, 4 Place de Mexico, Paris 16o. (75 Seine) NATUKKA, A., Consulting Engineers Maa ja Vesi Oy, Jtalahdenk. 2 Mme. Parez Helsinki 21 PICAUT, J., Coy ne Et Bellier, 19, Rue Alphonse de Neuville, 75 Paris 17* Mrs. Liisa Natukka PILOT, G. A., Lab. Central Ponts & Chaus., 58 BD. Lefebvre, Paris 15*™8 PONS, F., S.E.T.R. Autoroutes, 14, Rue Berthelot 94 Ivry / Seine FRANCE POST, G., Coyne et Bellier, 19, Rue Alphonse de Neuville, 75. Paris 17* RENOUX, J., Soletanche, 8 rue de Mademoiselle, 78 Versailles ABSI, E., CEBTP, 12, Rue Brandon, París 15 ROSSET, F. M., Electricité de France, 3 et 5, Rue Ronde, Chambery (73) Mme. Eliane Absi Mme. Ariette Rosset ADAM, M., S.N.B.A.T.I., 9 Rue la Perouse 75 Paris 16* SALENCON^I., Ecole Polytechnique, Laboratoire de Mécanique des Solides , Mme. Adam Paris 17 AHU. J„ Bureau Veritas, 31 Rue Henri Rochetort, Paris 17* SANGLERAT, G., 182 bis. Avenue Félix-Faure, 69, LYON (3è™ ) Mme. Ahü Mme. Marie Thérèse Sanglerat AUROY, F., Electricité de France, 9 Avenue Romand, 92 - Saint • Cloud SAVEY, P., Compaigne Nationale du Rhône, 2 Rue, André Bonin-69 LYON BACHE LEZ, J., Aéroport de Paris, 22 Rue Du Hameau, Paris 15*™® (4o.) Mme. Germaine Bachelez Mme Savey BACHELIER. M., Société Sol Essais, L'Orée du Golf - 48 Rue du 19 SCHLOSSER. F.. L.C.P.C., 58 BD Lefebvre Paris 15ème Janvier, (92) Carches TCHENG, Y., C.F.B.T.P.. 7, Rue Franquet, Paris XVème Mme. Bachelier TRABADELLO, R., Cimentaciones Mexicanas, S. A., Lagrange 207, Dep. 201 BAGUELIN, F. J., L.C.P.C., 58. Bld. Lebebvre - Paris XV Sra. Trabadel Io BASSAL, J. L., Ponts et Chaussees, Rue Ste. Catherine 61. Lille 59 VIDAL, T. A., 3 Avenue General de GauDe, 92 Puteaux BIAREZ, J., Domaine Universitaire Boite Postale No. 29, 38 Saint Martin VORMERINGER, R., Coyne et Bellier, 19 Rue Alphonse de Neuville, 75 , D'Heres Paris 17* BOLLE, G., C. I. T. R. A., 16 Boulevard Malesherbes 75 Paris 8*me CAMBEFORT, H., Soletanche, 112 Ter Rue Marcadet, Paris 18 Mme. Renie Cambefort GERMANY/ALLEMAGNE CORDA, H., Ministère de l'Agriculture, Service de l'Aménagement des Eaux Région Lorraine, 36 Place Saint Thiebault 57 METZ BAUMGARTL, W., Hochtief AG Mosel Strasse 129, 5628 Heiligenhaus DEMONSABLON, P., L'Entreprise Industrielle, 66 Rue Denfert Rochereau92 BERGER, H., Universität Stuttgart Hessenlauweg 14, 7000 Stuttgart, Vaihingen Boulogne DESCHAMPS, J., R.A.T.P., 30 Avenue Foch, 94 Fontenay • Sous • Bois BRAUNS, J., University of Karlsruhe Institut für BodenmechanJc und Felsmechanik, Im Haberacker 7a., 75 Karlsruhe 41 Mme. Deschamps COESFELD, G., Uferstrasse 34, 5038 Rodenkirchen, Rhein DESSENNE, J., Faculte des Sciences de Grenoble, Institut Dolomieu, Mrs. Ellynor Coesfeld Rue Maurice, Gignoux, Grenoble DUFOUR, C., Bureau Veritas 53, Avenue de Verdun, 92 Chatillon S/Bagneux FLOSS, R., Bundesanstalt für Strassenwesen, 5 Köln-Raderthal, Brühler Str. 324 Mme. Dufour GRASSL, G., Ingenieurbüro Grassl, Cimbernstrabe 3 7,4 Düsseldorf, DUPEUBLE, P., 11 Avenue Colonel Bonnet, Paris 16^me Mrs. Gretl, Grassl DURAND-RAUCHER, Y., Setrautoroutes, 72, Rue Saint-Louis-En-L'lle. HORN, A., Rhein-Ruhr Ingenieur, 46 Dortmund, Burgwall 5 75 Paris 4ème IDEL, K. H., Deutsche Gesselschaft für Erd-und, Grundbau, Esen, FLORENTIN J., MECASOL. 50 Rue Gérard, Paris X V II4™ Olbrichstr. 14, Essen Mme. J. Florentin JESSBERGER, H. L., Technische Hochschule München, U.S.A. TSC, FRANCOU, J., Electricité de France, 77, Avenue Raymond Poincaré, P. O. Box 282, Hanover, N w Hampshire 03755, U. S. A. Paris 16ème KANY, M., Bayevische Landesgewerbeanstalt, Gewerbemuseumspl 2, Nürnberg Mme. Francou KLAUS, W. J„ Karlsruhe University, Stresemannstr. 12, 75 Karlsruhe 21 GIRARD, J., Albaret, S. A. , 60 Rantigny KOENING, H., Deutsche Gesellschaft Für Erd-u. Grundbau, Moorenstrasse GIRAUDET, P.F J., Aéroport de Paris, 78 Avenue de Suffren, 75 Paris XV* 33, Essen GRATTESAT, G., Setra, 28, Rue des Saints Pères, Paris 7*me Mrs. Werner Koenig HABIB, P., Ecole Polytechnique, Laboratoire de Mécanique des Solides, Mrs. Dr. Dorothea Schweitzer 2, Rue Turgot, Paris 9* me KORECK, H. W„ Technische Hochschule München, Josef-von-Hirsch-Str. 31 HOYAUX, B., Ecole Polytechnique, 3140 Ed-Montpetit No. 401, Montréal 8033 Planegg 250, P. Q. Canada Mrs. Alix-Helga Koreck HUGONNIER, H., Pieux West. 8, Place des Etats-Unis, Montrouge (92) KORNER, H., Bayerisches Geologisches Landesomt, 8 München 22, Mme Hugonnier Pinzregentenstr. 28 KERISEL, J„ 28 Avenue d'Eylau, Paris 16*1?6 Mrs. Erika, Körner Mme. Kerisel KUEHN, H., Road Research Society, Roemerstr. 38,5038 Rodenkirchen KYVELLOS, G., 21 Boulevard Delessert, Paris 16*™® KUEN-VELTEN, H., Geologisches Landesamt, N. W., 18 Heyes Kirchweg, LEGRAND, J. L G., Labo. Central Ponts & Chajs. 108 Bld de La Reine, D-415 Krefeld - Fischeln Versailles - Yvelines LOCHTE, H. J., Technische Universität Clausthal, Institut für Bergbau, LE SCIELLOUR, G., Soletanche, 7 Avenue Gretry, 78 Maisons-LBfitte,Paris Zellbach 38, 3392 Clausthal - Zellerfeld Mme. Monique Le Sciellour MENZENBACH, E., D 51 Aachen, Heidweg 19 I 7 MUHS, H., Degebo an der Technischen Universität Degebo, Jebensstr. 1, MACKEY, S., Thornberry, Granville Road, Blackrock, Dublin, Ireland 1 Berlin 12 Mrs. S. Mackey NATAU, 0 ., Technische Universität Clausthal, Institut für Bergbau, YAMASHITA,T., I nstrusion-Prepakt (Far East) Limited, 725 Prince's Building Ebereschenweg 3392, Clausthal - Zellerfeld Hong Kong, B. C. C. NEFF, H., Erdbaurlaboratorium Königsberger Strasse 9. 6303 Hungen HUNGARY/HONGRIE Mrs. Ursula Neff PENTZIN, W., Erd-und Grondbau-Institut Hamburg, Moorgrund 40, 2 KEZDI, A., Technical University, Budapest XI, Muegyetem-RKP 3 Hamburg 7o. IRAN Mrs. Ingeborg Pentzin PETERMANN, H., Technical University Braunschweig, Hohler Weg 36, GHAHRAMANI, A., Pahlavi Univesity, School of Engineering, Shiraz 59 Siegen POOROOSHASB, H. B., Iranian Geotechnical Institute, Pahlavi University, Mrs. Lieselott Petermann Shiraz SCHMIDBAUER, J„ 43 Essen, Susannastrasse 31 Mrs. Poorooshasb SCHMIEDEL, U„ Giesestrasse 4, 2 Hamburg ZAMANI, K., Institute of Industrial Management, 9 * Pirjamali Ave., SCHUETZ, H., Hohlenscheidterstr. 5o. Wuppertal - C. Shemiran St. Peach Shemiran, Teheran Mrs. Christel Schuetz SCHULTZE, E., Technische Hochschule Aachen Inst. f. Verkehrewasserbau, IRELAND/I RLANDE Grundbau & ßodenmechanic, Mies-van-der-Rohe-Strasse, 51 Aachen Mrs. Klamroth Schultze HANRAHAN, E. T., University College, Dublin, Coil Mhuire, Sandy ford, SMOLTCZYK, U., Universität Stuttgart, D 2000 Hamburg 52, Mindermannweg Road, Dublin 14 13 KIRWAN, R. W., 5, St. Catherine's Road, Glenageary County Dublin SOOS, P., Reussweg 30, 8 München 60 MCCULLY, T., Ministry of Finance Govt. Of Northern Ireland, 21 STEINFELD, K. H. P. W., Erdbaulaboratorium Konigstrasse 247, 2 Hamburg Killeaton Crescent, Dunmurry, Co. Antrim 50 MITCHELL, J. A., 5, The Coppins, Brighton Rd., Foxrock, Co., Dublin STROMEVER, L., Deutsche Gesellschaft für Erd-und Grundbau, Brücker INDIA/INDE Holt 3, Essen-Bredeney WEIN HOLD, H., Aufschläger Kg., Waxensteinstrasse 12, 8 München 55 DASTIDAR, A. G., The Cementation Company Limited, 5, Chowringhee Mrs. Rosemarie Weinhold Approach, Calcutta - 13 WEISS, K., Degebo an der Technischen Universität, Degebo, Jebensstr. 1, Mrs. Sujata G. Dastidar 1 Berlin 12 DATYE, K. R., Datye 8t Tongaonkar, 10 Kamal Kishore Society, 35A WENZ, K. P., University of Karlsruhe, Im Bergfeld 18, 6729 Wörth Rhein Bal, Govinddas Road, Mahim, Bombay - 16 DD, WOHLBIER, H., Technische Universität Clausthal, Institut für Bergbau, MOHAN, D., Central Building Research Institute, Roorkee (UP), Adolf-Ey-Str. 2a., 3392 Calusthal - Zellerfeld NATARAJAN, T. K., Central Road Research Institute, P. O. CRRI, WOLTERS, R., Geologisches Landesamt Nordrhein-Westfalen, Westwall New Delhi, 20 Nr. 124, 415 Krefeld RANJAN, G., Novascotia Tech. College, Dept, of Civil Engineering, WULFF, M., 2 Hamburg 1, Nordkanalstr. 53 Halifax, N. S., Canada GHANA RAO, B. H. A., University of Now Mexico (C.E.R.F.J, 828, Diana PI., N.E. Albuquerque, Now Mexico, 87112 U. S. A. AYETEY, J. K., Ghana Academy 8i Sciences, Building and Road Research israel / isr a E l Institute, University of Science and Technology, Box 40, Kumasi BHATIA, H.S., Council for Scientific & Industrial Research, Building BAR-SHALOM, Y., 22 Amsterdam Str. Tel - Aviv and Road Research Institute, University P. O. Box 40, Kumasi EITAN, R., 11 A Sport St., Haifa DE GRAFT-JOHNSON, J. W. S., Building and Road Research Institute, GORDON, D., Haroe St. 86, Ramat • Gan University Box 40, Kumasi HADDAS, 0 ., 29 Nizana Street, Grivataym TODOR, P. C., Lyon Associates, Inc. P. O. Box 3715, Kumasi Mrs. Haddas KASSIFF, G., Technion - Isael, Institute of Technology, Technion City, GREECE/GRECE Haifa KATZIR, M., Foundations and Soils Ltd., 38 Revivim St., NR Zhala COUMOULOS, D. G., Ph D (Contab) 8, Dryadon St., Philothei, Athens Tel • Aviv LOIZOS, A., Université Technique Nationale d 'Athenes, 51, Av. Posseidonos KOMORNIK, A.,Technion - Israel Institute of Technology, 20A, Wedgemood 51, Pal. Phaleron, Athenes St., Haifa Mrs. Victoria Loizos Mrs. Rivka Komornik Miss, Andreas Loizos NEGRI, Y., Foundation and Soil Ltd., 12 Nachum St., Tel - Aviv, SOTIROPOULOS, E. S., Geomechanique Consulting Engineers, 5 Zan RAFAELI, D., Parsons, Brinckerhoff, Quade & Douglas, Inc., 159*00, Morgas Str., Psychikon, Athens Riverside Drive, West, New York, N. Y., U. S. A. Mrs. Anne Sotiropoulos WISEMAN, G., Technion - Israel, Institute of Technology, Freud ST., 4 A, Haifa GUATEMALA Mrs. Gdalyah Wiseman KOOSE, S. F., Universidad de Guatemala, 20 Avenida "A" 3-68, Zona 15 ZEITLEN, J. G., Israel Institute of Technology, Technion City, Haifa, VH-1, Ciudad de Guatemala Mrs. Frances R. Zeitlen ZOLKOV, E., Standards Institution of Israel, Ramat Aviv, Tel - Aviv HONDURAS Mrs. D. Zolkov

CASCO, A. A., Universidad de Honduras, 8a. Calle 305, Colonia Alameda, 1TALY/ITALIE Tegucigalpa, D. C. BALDOVIN, G., Geotecna, Via Solari 43/2, Milano Sra. Sonia de Casco Mrs. Adriana Baldovin BELLINI, A., I.C.O.S., Company, Via Luciano Manara 1, 20122 Milano HONG KONG BELLOTTI, R., ENEL - VIA Gattamelata 34, Milan GUILFORD, C. M., Scott Wilson Kirkpatrick & Partno-s, Star House, BENINI, A., Via Eudossian 18, 00184 Roma Salisbury Road BRUNNER, F., I.C.O.S., Co., Via Luciano Manara 1,20122 Milano LUMB, P., University of Hong Kong, Department of Civil Engineering CALABRESI, G., University of Rome, Instituto di Scienza delle Costruzioni, Mrs. Lumb Via G. Vaccari 32, Roma

I 8 CASSINIS, C., Via Chiana N. 38, 00198, Roma NAKAYAMA, J., Fudo Construction Co., Ltd., 4-2-16 Ginza Chuo-ku, Tok^) Mrs. A ttila Cassinis NISHIDA, Y., University of Kanazawn, Department of Civil Engineering, CUOCOLO, M., Via Pacuvio 4, 80122, Napoli Ishikawa-Ken Mrs. Anna Z ito OHKUSA,'S.,Tokai University, Yachiyo-sou 5-8-105 Yachiyo-cho,Simizu-shi, DE AG AZIO, A., Ministero dei Lavori Pubblici, Via Isola Bella 35, 00141, Shizuoka-ken Roma OHSAKI, Y., Building Research Institute, Ministry of Construction, DELLA SCALA, F., A.N.A.S., Via Bracciano 45, Roma Japanese Government, 4-394, Hyakunin-cho, Shinjuku T o kyo DIAMANTI, R., Geosantfe SFA., Via Riccardo Zandonoi 11, Roma OZAKI, M.f 1-21, Nagara Miyaguchi-cho, Gifu-shi, Gifu Mrs. R. Diamanti OZAWA, Y., Nikken Sekkei Koomu Co. Ltd., F6-104, 4150-5, Nimei-cho, Mr. Lucio Diamanti Nara Mrs. L. Diamanti SAIKI, K., Kajitami Civil Engineering Consulting Co. Ltd., 7-30-403, DOLCETTA, M„ Ente Nazionale per l'Enegia Electrica, Via. G. B. Yamazaki-danchi, Yamazaki, Machida-shi, Tokyo Martini n. 3 00198, Roma SHIBATA, T., Kyoto University, 6 Iga Momoyama-machi, Fushimi-ku, Mrs. Ma. T e re a Dolcetta K yo to - shi F E R R A N TE , B., Italstrade S.P.A., Piazza Velasca, 2, I 20122 Milano SHIBUYA, H., Osaka Soil Laboratory, c/o Osaka Doshitsu Shikenjyo, Mrs. Marta Pellis de Ferrante 1 - 118, Utsubo, Nishi-ku, Osaka FUMAGALLI, E., I.S.M.E.S., Via Giulio Cesare 14, Bergamo, I Mrs. Masaki Shibuya Mrs. Maria Alice Fum atili SHIRAISHI, S., Tokyo University, 320 Kinuta, Setagaya-ku, Tokyo, 157, JAMIOLKOWSKI, M.,Studio Geotecnico Italiano, c/o S.G.I. Via Mincio n.22, TANAGUCHI, T., Nihon Koei Co. Ltd., 6-430 Omiyamae, Suginami*ku, Milano T okyo JAPPELLI, R „ University of Palermo, 72 Via Principe di Paterno, 90144, TOMOZAWA, Y., Osaka Doshitsu Shikenjo Soil Test. Lab., 2814 Derby St., Palermo Berkeley, Calif. 94705, U.S.A. JURINA, N., I.C.O.S., Company, Via Luciano Manara 1, 20122 Milano YAMADA, G., Railway Technical Research Institute, Japanese National, MARCHETTI, S., Studio Geotecnico Italiano, c/o S.G.I. V ia M in cio 22, Railway 2, Hikari-cho, Kokibunji-shi, Tokyo Milano YAMANOUCHI, T., Dept, of Civil Engineering, Kyu-shu University Fukuoka MARTINI, P., Via Snam Progetti Galliano 3/d, S. Donato Milanese, Milano YAMAGUCHI, S., Kyoto University, 13 Nishifukunokawa Okazaki Sakyoku, MORALDI, G „ University of Rome, Viale Regina Margherita 101, Rome K yo to Mrs. Maria M oraldi YAMAMOTO, S., Chiyoda Chemical Engineering & Construction Co., Miss Clara Ventriglia 1-7 Shoto Cho Ehibuyaku, T okyo NICCOLAI, C., Montecatini Edison S.P.A., C.So. Sempione 6,20154,Milano YAMASHITA, J., Taisei Construction, 387, Kamikizaki, Urawa City, Mme. Alessandra Niccolai Saitama Pref. Mlle. Silvia Niccolai OBE RTI, G., Cozso Duca Abruzzi 24, Torino Mme. Oberti MALAYA/MALAISIE PICCIONE, M.t GEOSONDA, Via Sierra Nevada 37, Roma CHIN, F. K., University of Malaya, Faculty of Engineering, Kuala Lumpur Mme. Alma Piccione REBAUDI, A., ENEL* Centro CIEC, Corso del Popolo 111 Mestre-Venezia Mme. Liana R. Rebaudi MEXICO/MEXIQUE SEMBENELLI, P., Eie. 8 Chiabrera, 20151 Milano ACEVEDO R, H., Sistema de Transporte Colectivo, (METRO), Darwin TORNAGHI, R.( Rodio S.P.A. Company, Via Cherubini 6, M ilano No. 142-2o. Piso, D. F. VIGGIANI, C., Università di Napoli, Via Claudio 21, 80125 Napoli ACEVES, J. C., Piedras Negras No. 6, B. de Eche^ray, Estado de México AGRAZ, J. S„ Comisión Federal de Electricidad, Augusto Rodin 265, JAPAN/JAPON AGUI LAR, A. E., Comisión Federal de Electricidad, Ródano 14, 10o. Piso AGUI LAR L., C., Universidad Nacional Autónoma de México, Playa Guitarrón ABOSHI, H., 1053, Yamateniku, Takasu, Hiroshima, No. 327, Col. Reforma Ixtaccihuatl, D. F. ADACHI, K.( Kiso Jiban Consultants, 5*2-15, Nagasaki, Toshima-ku, Tokyo Sra. de Aguilar AZAKAMI, S., 3, Yuraku-cho, 1-chome, Chiyoda-ku, Tokyo AGUIRRE C, J., Constructora y Fraccionadora Continental, S. A ., ENDO, M., Takenaka Technical Resærch Laboratory, 2*5-14, Minamisuna, Calzada de Tacubaya No. 6, D. F. Koto-ku, Tokyo AGUIRRE M, L. M., U.N.A.M.,- Geosol, S. A.f América 245,. Coyoacan FUJITA, K., Hazama-gumi Co. Ltd., 1068 Oizumi-cho, N ishi, Nerima-ku, Sra. Bertha C. de Aguirre Tokyo AHUMADA B, M., Comisión Federal de Electricidad, Ródano 14-6o. Piso HARIU, K., Sakata-Denki Co. Ltd., 1618*10 Gakuennishi-machi, Kodaira-shi, ALATORRE O, G., Comisión Federal de Electricidad, Novillo 2 5 , T okyo Col. Electra Tlanepantla , D. F. HASHIBA, T., Takenaka Technical Research Laboratory, 2*5*14 Minamisuna, ALBERRO A, J., Universidad Nacional Autónoma de México, Dante 23 K oto-ku, T okyo Sra. Solange H. de Alberro HIRASHIMA, Tf/ Nippon Kokan K. K., 215-2, Kita-Akitsu, Tokorozawa C ity ALCALA B,T., Universidad Nacional Autónoma de México, Queretaro 211-2 Saitama Pref. . ALCERRECA C, E., U.N.A.M. y S.O.P., Ave. de la Rioja 327, Col. Lindavista ISEDA, T.( Ministry of Construction, 11-4 Tendai 1 chôm e, Chiba C ity, Sra. Alcerreca Colunga Chiba Pref. ALDAPE V, M., Sistema de Traniporte Colectivo (METR O), Darwin 142-2o. KAKI, S., Tochigi Prefectural Government, 2311-1 Imaizumi-machi, Piso, D. F. Utsunomiya-shi, Tochigi-ken ALDECO y C, M.f Secretaría de Recursos Hidráulicos, Boston No. 67, KOBA, H., Port & Harbour Research Institute, Nagase 3, Yokosuka Col. Nápoles, D. F. KO TO DA, K „ Waseda U niversity, 29-21, Nakahara-1, M itaka, T o k y o ALMADA L, C. R., Instituto Politécnico Nacional (E.S .I.A.), Esparza Oteo - MOGAMI, T., Tokyo University, 7-chome, Hongo, Bunkyu-ku, Tokyo No. 67, D. F. Mrs. Y u kiko Mogami ALON SO J, V ., Departamento del D istrito Federal, Plaza de la C onstitución MORI, H., Kisojiban Consultants Co., Ltd. Masuda Bldg. 2-4-5, lidabashi, AMEZCUA S, J. L., Universidad Autónoma de Guadalajara, Calle Guillermo Chiyoda-ku, Tokyo Prieto No. 183, Guadalajara, Jalisco. MORIKUNI, M., Kajima Construction Co., L td ./11-5, 2 chôme, Nishi- ARCEO T, L., Comisión Federal de Electricidad, Boulevard Xola No.1114 Nakanobu, Shinagawa-ku, Tokyo ARECHIGA D, H., Comisión Federal de Electricidad, Ródano 14-6o. Piso M U R A Y A M A , S., Disaster Prevention Research Institute, K y o to University, ARGUELLES V, J., Constructora y Fraccionadora Continental, S, A., Kita-ku, Shichiku, Kamiumenoki-cho, 26 Kyoto Calzada de Tacubaya No. 6, D. F. NAKAMURA, K., Okumura-gumi Co. Ltd.,2-3-24-Matsuzaka-cho, Abeno-ku AUVINET, G.Y., Universidad Nacional Autónoma de México, In s titu to de Osaka-shi Ingeniería, Florida 30-7, Col. Nápoles, D. F. I9 AVELAR L, R., Cimentaciones y Edificaciones, S. A., Acapulco No. 43-201 CORDOVA, M. A., Universidad Nacional Autónoma de México, Instituto de Sra. de Avelar Ingeniería, D. F. AVILA 0 , S., Secretaría de Obras Públicas, Zarco 2630, Chihuahua, Chih. CORONA A, A., Comisión Federal de Electricidad, Ródano 14 • 6o. Piso, D.F. Sra. Martha H. de Avila CORRAL L, J. A., Petróleos Mexicanos, Insurgentes Centro 141-Dept. 9, D.F. AVIÑA, R., Baja California 177-302 ,D .F . CORREA, J. J., Universidad Nacional Autónoma de México, insurgentes Sur A V ITIA G, R. C., Instituto Mexicano del Cemento y del Concreto, A. C., No. 3711, D .F . Insurgentes Sur. No. 1846, D. F. Sra. Elide Correa AYUSO G, J., Comisión Federal de Electricidad, Ródano 14 • 5o. Piso CORRO C, S., Universidad Nacional Autónoma de México, Instituto de AZTEGUI T, E., Secretaría de Obras Públicas, Calle América 35, Col. Ingeniería, Ciudad Universitaria, D. F. Parque San Andrés, 0 . F. CORTES H, F. J., Estructuras y Construcciones Electro-Mecánicas, S. A., BAEZ P, J. D., Petróleos Mexicanos, Manuel Ma. Contreras 107, 0. F. Av. Nueces 97 - 3 , D. F. BARNETCHE, G,E., Perforaciones Especializadas, S. A., Av. Universidad 482 COVARRUBIAS, S. W., Universidad Nacional Autónoma de México, Instituto BARRAGAN A, S., Secretaría de Obras Públicas, Casas Grandes 153*3 de Ingeniería, Ciudad Univo'sitaria, D. F. BAROCIO M, A. J., Petróleos Mexicanos, Av. Marina Nacional 329, CRESPO V, C., I.T.E.S.M., Pedro Quintanilla 390, Col. Chepevera, Edificio 1810 - Bo. P is o , D.F. Monterrey, N. L. BATIZ N, C., San Luis 190, Naucalpan Estado de México CRUICKSHANK G, G., Secretaría de Obras Públicas, Agua 719, D. F. BENASSINI V, A., Secretaría de Recursos Hidráulicos, Alfredo Musset 221 CRUZ B, A., Comisión Federal de Electricidad, Augusto Rodin 265 , D F. BENAVIDES A, M., Comisión Federal de Electricidad, Emperadores 85 CUELLAR B, R., Comisión Federal de Electricidad, Augusto Rodin 265 , D.F. Sra. Margarita A. de Benavides Sra. de Cuellar BENAVIDES 0 , R., Universidad Autónoma de Tamaulipas, Díaz Mirdn 1107, CUEVAS B, L., San Juan de Letrán 2 • 4o. Piso , D. F. Pte. Tampico, Tamps. DE ALBA, P., Secretaría de Recursos Hidráulicos, Juan de Acuña 135, D. F. BETANCOURT, C., Comisión Federal de Electricidad, 1er. Retorno DE LA FUENTE L, E., Secretaría de Obras Públicas. Alabama 193 - 7, Cocoteros 7, Valle San Mateo, Naucalpan Edo. de México Col. Nápoles , D. F, BORJA N, R., Ingenieros Civiles Asociados, S. A., Av. María No. 13, DE LA LAMA. F., Boulevard M. Avila Camacho No. 6 • 702. Naucalpan de BORRO C, R. A., Compañía de Luz y Fuerza del Centro, S. A., Monte Juárez. Estado de México Athos 415, Depto. 1 , D. F. Sra. de la Lama Sra. María de la Luz Perales de Borro DE LA O C, A., Secretaría de Recursos Hidráulicos, Alemania No. 20 BOTAS E, G., DIRAC, San Lorenzo 1133,D .F . DE LA PARRA, R., Comisión Federal de Electricidad, Ródano 14 6o. Piso BOTELLA M, C., Petróleos Mexicanos, Circuito Poetas 48, Estado de Mé­ DE LA PEÑA O, C., Construcciones, Conducciones, y Pavimentos,S. A., xico Ave. Coyoacán 1514 - 2 , D. F. CABEZUT B, J. A., Secretaría de Recursos Hidráulicos, Sierra Itambe 41, DEL CASTILLO, C. R., Universidad Nacional Autónoma de México, Lomas de Chapultepec, D. F. . CALDERON H, H. M., Laboratorios de Ingeniería, A. C., Rochester 49, Instituto de Ingeniería, 3a. Cerrada Moctezuma 19. Col.Romero de - Sra. Estrella C. de Calderón Terreros, Coyoacán, D. F. CALDERON, M. J., ACE, Ingenieros Consultores y Constructores, S. A., DEL CASTILLO.M, H., Secretaria de Obras Públicas, Paseo de laAlteña289, Insurgentes Sur 1877 - 4o. Piso, D. F. La Alteña de Lomas Verdes, Estado de México CALDERON V, J.L., Petróleos Mexicanos, Quintana Roo 93 - 6, D. F. Sra. Rosa A. de Del Castillo CAMARGO H, J. E„ Secretaría de Recursos Hidráulicos, Sierra Gorda 23 DEL RIO S, C. H., Ingeniería de Suelos, S. A., Matanzas 814 • 1 , D. F. CAMPOS, C. R., Av. 5 de Mayo No. 29-209 , D. F. DIAZ, J. A., Universidad Nacional Autónoma de México, instituto de CAMPOS, J. M., Comisión Federal de Electricidad, Augusto Rodin 265 Ingeniería, Ciudad Universitaria , D. F. CANALES L,R., Comisión Federal de Electricidad, Ródano 14,6o. Piso DIAZ C, E., Comisión Federal de Electricidad, Planeación, Ródano 14, D. F. CAABAJAL R, R., Comisión Federal de Electricidad, Planeación Ródano 14 DIAZ C, M., Estructuras y Cimentaciones, S. A., Minería No. 145, D. F . CARBALLO 0 , M., Faja de Oro No. 251, Col. Petrolera, D. F. DIAZ DE COSSIO, R„ Universidad Nacional Autónoma de México, CARDENAS C, J. A., Ingeniería de Suelos, S. A., Paganini No. 115, D. F. Instituto de Ingeniería, Ciudad Universitaria, D. F. CARRANZA E,A., Sosa Texcoco, S. A., República de Costa Rica No. 163 DOBERNIG G, J. A., Dirección General FF.CC., Operación S. C.y T., • CARRILLO F, A., CONESCAL, Apartado Postal 41-518, D. F . U. N. A. M., Av. de los Constituyentes 1220, Lomas Altas, D .F . CARSTENS, A., Cía Mexicana Aerofoto, S. A., Obrero Mundial 338 1er. Piso DOMINGUEZ, A., Estructuras y Cimentaciones, S. A. Minería 145, D. F. Sra. de Carstens DORANTES C, M., Cía Bufete Industrial, Tolstoi 22, D. F. CASADOS, V ,L , Comisión Federal de Electricidad, Ródano 14 • 6o. Piso DURAND C. H., Sosa Texcoco, S. A., Sierra de las Vertientes 420, D. F. CASALES L, V., Secretaría de Recusos Hidráulicos, Monrovia No. 504 ELIZALDE V, I., Secretaría de Recursos Hidráulicos, Naranjos 41 - B, CASTELLANOS G,R., Ingeniería y Puertos, S. A., Patricio Sanz 1625 > 19 Jardines de San Mateo, Estado de México CASTILLA C, J. E., Universidad Nacional Autónoma de México, Agustin ENRIQUEZ, R., DIRAC, Boulevard de Circunvalación 121 - 2, Col. Melgar Edificio Condesa "N" No. 1 ,D .F . Atlántida. 0. F. CASTILLO M, M., Secretaría de Recursos Hidráulicos, Danubio 74-4 ESCANDON G, J., Varsovia No. 36- 5o. Piso ,D .F . CASTRO F, M., Instituto Politécnico Nacional (E.S.IA.), Calzada Puente de Sra. Ma. Amparo P. de Escandón Guerra No. 202, D. F. ESCOBAR F, F., Comisión Federal de Electricidad, Ródano 14,6o. Piso CERVANTES, R., Universidad Nacional Autónoma de México, Instituto de ESCOBAR R, E., Petróleos Mexicanos, Toltecas 44 - 302, Tlanepantla, Ingeniería, D. F. Estado de México CHAVEZ G, R., Secretaría de Recursos Hidráulicos, Abraham González 3, ESCUTIA M, R., Construcciones, Conducciones y Pavimentos, S. A., 4o. Piso , D. F. N w ton No. 16 - B, D .F . CHAVEZ M, H., Comisión Federal de Electricidad, Ródano 14 - 5o. Piso Sra. Ester H. de Escutia CHAVEZ S, J., Comisión Federal de Electricidad, Ródano 1 4,5o. Piso ESPINOSA V, F., Secretaría de Obras Públicas.y E. C. S. A., Patricio Sanz CHAVEZ V, I., Construcciones, Conducciones y Pavimentos, S. A., No. 1625 - 7 . D .F. Querétaro No. 244, D. F. Sra. Patricia de la Mora de Espinosa Sra. Allie M. de Chávez ESQUIVEL, D. R. F., DIRAC, A. C., Pasadena 23, Col. del Valle , D. F. CHERNOVETZKY H, J., Universidad Nacional Autónoma de México, ESTRADA, H., I.S.T.M.E., Plan de Ayala 29, D. F. Calzada México-Tacuba No. 657-2, D. F. FARIAS M ,J., Construcciones de México, S.A.de C.V. California 308, D. F. CISNEROS, A. F., Comisión Federal de Electricidad, Ródano 14-3piso F ARJEAT, D., SOLUM, S. A., Manzana 6, Ave. El Riego Andador 83 No. 5 COBO G, L. F., Secretaría de Obras Públicas, Rosaura Zapata 12, Villa Coapa, 0. F. Cto. Educadores, Cd. Satélite, Edo. de México Sra. de Farjeat COLCHERO, F., Estructuras y Cimentaciones, S. A., Minería No. 145 FARJEAT, E., SOLUM, S. A., Bosque de Durango 31, Jardines de Santa CONESA R, A., SOLUM, S. A., Vázquez de la Mella 335 • 8o. Piso Monica, Estado de México Sra. Blanca L de Conesa Sra. de Farjeat

20 FAVELA L, F., Ingenio-os Civiles Asociados, Crestón No. 344, Pedregal HARDY C, V., Compañía Mexicana Aerofoto, S. A., Antonio Caso No. 142 de San Angel, 0 . F. Sra. Margarita M, Hardy Sra. de Favela HARO O, G., Perforaciones Especializadas, S. A., Paseo de la Reforma FERNANDEZ D, G., Oficina de Consultoría, Isabel (a Católica 68 - 4o. Piso No. 156 - 14o. Piso. D. F. FERNANDEZ L, C., Secretaría de Obras Públicas, Xochicalco 26 - 3A , D. F. HEREDIA CH, L., Comisión Federal de Electricidad, Ródano 14 - 6o. Piso FERNANDEZ M, J., Comisión Federal de Electricidad, Administración de HERNANDEZ C, A., Secretaría de Recursos Hidráulicos, Casas Grandes Obras, Ródano 14, D. F. No. 95 - 203, D. F. FIGUEROA, V ,G . E., Secretaria de Recursos Hidráulicos, Oficina Estudios HERNANDEZ C, O., Bufete de Ingeniería Civil y Química, S. A., Especiales, Ayuntamiento No. 146, Piso 10 , D. F. San Lorenzo 1010 - 201 , D. F. FLAMAND R, C. L., SOLUM, S. A., Valdivia No. 126 , D. F. Sra. Ma. del Carmen de Hernández Sra. Jolene Flamand HERNANDEZ M, V., Secretaría de Recursos Hidráulicos, Edif. S. Francisco - FLORES B, J. R., Secretaría de Obras Públicas, Valle de Bravo 39 • 103, Juárez y Jalisco, Desp. 100, Hermosillo, Son. El Mirador, Naucalpan Estado de México HERNANDEZ M, F. X., Universidad Autónoma de Tamaulipas, Av. FLORES O, J„ STAG, S. A., Ejército Nacional 530 - 302 , D. F. Hidalgo 308, Depto. 1, Tampico, Tamaulipas FLORES R, A., Secretaría de Obras Públicas, Andrea del Castagno 33 HERNANDEZ R, M., Comisión Federal de Electricidad, Ródano 14 - 6o. Piso FLORES S, B., Secretaría de Obras Públicas, Casas Grandes 153, Depto. 3 HERNANDEZ T, R. L., Secretaría de Recursos Hidráulicos, Paseo de la FLORES V, A., Universidad Nacional Autónoma de México, Instituto de Reforma No. 77 • 7o. Piso, D. F. Ingeniería, Ciudad Universitaria. D. F. HERRERA, I., Universidad Nacional Autónoma de México, Instituto de Sra. Carmen de Flores Geofísica, Torre de Ciencias 3er. Piso, Ciudad Universitaria, D. F. FLORES Z, D., Secretaría de Recursos Hidráulicos, Corona No. 206 , D.F. HIGUERA G, S., Secretaría de Recursos Hidráulicos, Retorno 813 • 14 GALINDOC, l„ SOLUM, S. A.. Av. Jalisco 295-112, D. F. HINOJOSA J, E. S., Ingeniería de Suelos, S. A., Paganini No. 115 GAMBOA F, J., Secretaría de Recursos Hidráulicos, Sierra Gorda 23, D. F. HIRIART B, F., Comisión Federal de Electricidad, Zaragoza No. 21 Sra. Nuria de Gamboa Sra. Bertha Urdanivia de Hiriart GARAY R, N., Comisión Federal de Electricidad, Ródano 14 • 5o. Piso, D.F. HUERTA B, J., Construcciones. Conducciones y Pavimentos, S. A., GARCIA A, G., Secretaría de Obras Públicas, 3a. Cerrada Calle 10 No. 228 Boulevard Aeropuerto No. 69 - 5, D. F. Sra. García Altamirano Sra. Rebeca V. de Huerta GARCIA A, J., Secretaría de Obras Públicas, Tajin 228 Depto. 204 , D. F. HUNGSBERG, U., Secretaría de Recursos Hidráulicos, Marsella No. 3 - 18 GARCIA C, A., Construcciones, Conducciones y Pavimentos, S. A., IRUEGAS C, A., Secretaría de Obras Públicas, Márques de Aguayo 15. C., Adrián Brower No. 261 • G ,D . F. Fundadores Cd. Satélite, Estado de México Sra. Rosario A. de García ISUNZA, C., Estructuras y Cimentaciones, S. A„ Minería No. 145 GARCIA C, L.A., Secretaría de Obras Públicas, Quemada 9 Depto. 4. D. F. IZQUIERDO. H., Av. Coyoacán 1108 - 202, D.F. GARCIA E, F., Ingenieros y Arquitectos, S. A. Apartado Postal 294jCórdoba, JARA L, M„ Secretaría de Obras Públicas, Goroztiza No. 35, Circuito Veracruz. Diplomáticos, Ciudad Satélite, Estado de México GARCIA G, A., Comisión Federal de Electricidad, Ródano 14 • 5o. Piso,D. F. Sra. Alicia Días de Jara GARCIA H, C., Comisión Fedval de Electricidad, Planeación Rodano 14, D.F. JAKOB W, A., Impulsora y Promotora de la Habitación, S. A., Hacienda GARCIA, L. M., Universidad de Guadalajara, Facultad de Ingeniaría, San Nicolás, Tolentino 40, Bosque de Echepray, Naucalpan, Estado Guadalajara de México GARCIA M, O., Cía. de Luz y Fuerza del Centro, S. A., Melchor Ocampo JIMENEZ A, A., Comisión Federal de Electricidad, Ródano J4 - 5o. Piso No. 171 - 517, D. F. JUAREZ B, E., Universidad Nacional Autónoma de México y S. O. P., GARCIA R, L., Universidad de Guadalajara, Facultad de Ingeniería, Ohio No. 37, D. F. Guadalajara Sra. de Juárez Badillo GARCIA S, H., Comisión Federal de Electricidad, Ródano 14 - 6o. Piso. D.F. KRAEMER, D.( Proyecto Texcoco, Av. Insurgentes Sur 1032 - 101 GARDUÑO V, H., Comisión Federal de Electricidad, Ródano 1 4 ,10o. Piso LANGLE L, F., Compañía de Luz y Fuerza del Centro, S. A., Melchor GIL F, G., Ingenieros Civiles Asociados, Minería 145, Edif. MC", 3er. Piso , D.F. Ocampo No. 171 - 517 , D. F. GIRAULT, P., Ave. Morelos No. 20 - Desp. 506, D. F. LARIS A, E., Secretaría de Recursos Hidráulicos, Av. Tennyson No. 121 Sra. Ma. InésdeGirault Sra. Renee Fraga de Laris GOMEZ R, R., Secretaría de Recursos Hidráulicos, Emperadores No. 106, D.F. LARTIGUE, G., Compañía Mexicana de Aerofoto, S. A., Obrero Mundial GOMEZ V, R., Comisión Federal de Electricidad, Ródano 14, 10o. Piso, D. F. No. 338, 1er. Piso, Col. Narvarte, D. F. GONZALEZ A, A., Calero No. 21 , D. F. Sra. Carmen de Lartigue Sra. Marilu González LAVALLE O, J. H., Diseños y Construcciones, S. A., Tehuantepec 255 GONZALEZ F, M., Pilotes de Concreto, S. A., Rio Amur No. 13 3er Piso, 3er. Piso, D. F. Cok Cuauhtémoc, D. F. LEAL G, G., Petróleos Mexicanos,- Depto. de Const. y Mantenimiento, Sra. de González Flore Reynosa, Tamaulipas GONZALEZ L, C., Comisión Federal de Electricidad, Ródano 14 - 6o. Piso LECANDA, J., Universidad Nacional Autónoma de México y Constructora GONZALEZ M, H., Comisión Federal de Electricidad, Ródano 14 - 3er.Piso EMALSA, Samuel Ramos No. 32, D. F. GONZALEZ M, G., Comisión Federal de Electricidad, Ródano 14 - 6o. Piso LEON T, J. L., Antillas No. 906 - 303, D. F. GONZALEZ P, L., Comisión Fedvalde Electricidad, Ródano 14 • 6o. Piso LESSER J, H., Secretaría de Recursos Hidráulicos, Callejón de la Cita 21 GONZALEZ R, J., Comisión Federal de Electricidad, Ródano 14 • 6o. Piso LEVY H, J., U. N. A. M. y SOLUM, S. A.. Emerson No. 250 - 104, D. F. GONZALEZ V, F., Comision Federal de Electricidad, Ródano 14 - 5o. Piso LIEBERMAN L, L„ Universidad Nacional Autónoma de México, Kanias15- GORODESKY L, J., Apartado Postal 275, Naucalpan de Juárez, Estado de 301, D. F. México LOCE R, A., Compañía de Luz y Fuerza del Centro, S. A., Presa Palmito 119 GRAUE, R., Proyecto Te*coco, Av. Insurgentes Sur 1032 - 101, D. F. LOPEZ C, R., SOLUM, S. A., Patricio Sanz No. 1805 - 301, D. F. Sra. Mabel L. de Graue Sra. de López C. GUERRERO, J., Secretaría de Recursos Hidráulicos, J. F. Gutiérrez 347 LOPEZ C, J. L., Instituto Politécnico Nacional (E. S. I. A.) Av. Altillo GUTIERREZ B, L., Constructora GUT., S. A., Av. Revolución No. 1387 193, Tlalnepantla, Estado de México GUTIERREZ. R., SOLUM, S. A., Minería 145, D. F. LOPEZ C, A. R., Ingenieros Civiles Asociados, S. A., Concepción Beistegui Sra. Gutiérrez No. 1113,0. F. GUTIERREZ R, L., Cía. de Luz y Fuerza del Centro, S. A., Melchor LOPEZ G, J. M., Universidad de Nuevo León, Loma Blanca No. 2850, Ocampo No. 171- 517, D. F. Monterrey, N. L. GUZMAN C, L., Secretaría de Recursos Hidráulicos, Sierra Gorda 23 Sra. de López GUZMAN, G„ Estructuras y Cimentaciones, S. A., Minería No. 145 LOPEZ N, L. A., Petroleos Mexicanos, El Fortín, Andador 3, Casa 18, GUZMAN, R, R., San Luis No. 190, Naucalpan, Estado de México Villa Coapa, D. F. GUZMAN Z, P., DIRAC, S. C., Empresa 136 - 3er. Piso, D. F. LOPEZ P, R.. SOLUM, S. A., Luis Moya 75 • 1 , D. F. HANEL C, J. J., I.S.T.M.E., Baja California No. 262-1, D. F. LOPEZ R, D., ISTME, S. A., Cerro del Chapulín No. 9 , D. F.

21 LOPEZ R, J., Av. del Riego Andador 57, Casa 8, Villa Coapa , D. F. MORENO H, J., Laboratorios de Ingeniería y Construcción, 18 Sur 6132, LOPEZ R, R., SOLUM, S. A., San Francisco 1848 - 302, D. F. Jardines de San Manuel, Puebla, Pue. Sra. Consuelo B. de López MORENO P, G., U. N. A. M. y S. O. P., Caobas 22, Jardines de San Mateo LUER, C., Ingenieros y Arquitectos, S. A., Sullana 722 , D. F. Estado de México MACIAS U, I., Universidad Nacional Autónoma de México, Monterrey 87 MORENO, R., Comisión Federal de Electricidad, Augusto Rodin No. 265 -203, D. F. MOSQUEDA T, A., Secretaría de Recursos Hidráulicos, Sierra Gorda 23 Arq. Martha Macias Urrutia Sra. Ma. Soledad de Mosqueda MAGALLANES, R., Universidad Nacional Autónoma de México, Instituto MOSQUEDA T, R., Secretaría de Recursos Hidráulicos, Julio Verne 105 de Ingeniería, Saúco 150 , 0 . F. Col. Polanco, San Luis Pososí, S. L. P. MANRIQUE L, I., Comisión Federal de Electricidad, Planeación, Ródano 14 Sra. Bertha de Mosqueda MANTEY B, F., Instituto Mexicano del Petróleo, Alconedo 25, Mixcoac MUÑOZ F, D., Secretaría de Recursos Hidráulicos, Carolina No. 149 MARES G, R., Comisión Federal de Electricidad, Ródano 14, 10o. Piso MUÑOZ P, G., Comisión Federal de Electricidad, Ródano 14 • 3er Piso MARIN E, A., Comisión Federal de Electricidad, San Borja No. 412 MUÑOZ R, E., Secretaría de Obras Públicas, Gemelos 147, Col. Prado MARIN V, G., DIRAC., Boulevard Popocatepetl No. 31, Fraccionamiento Churubusco, D. F. Los Pirules, Tlalnepantla, Estado de México MUÑOZCANO O, E. A., Secretaría de Recursos Hidráulicos, Manuel M. MARQUEZ C, J. A., Comisión Fedo-al de Electricidad, Administración de Ponce No. 150 , D. F. Obras, Ródano 14, 0 . F. MARRON V, A., Comisión Federal de Electricidad, Ródano 14 • 6o. Piso MURAD S, C. A., Guanos y Fertilizantes de México, S. A., Insurgentes Sur MARSAL, R. J., Comisión Federal de Electricidad, Ródano 14 • 9o. Piso No. 1079 P. B. , D. F. MARTINEZ, E., ISTME, S. A., Risco No. 206 , D. F. MURO L, J. A., Centro Regional de Enseñanza Técnica Industrial, MARTINEZ G, J. V., Universidad Autónoma Potosina, Hermanos Infante Belén 391, Guadalajara, Jal. No. 220, San Luis Potosi, S. L. P. NESSI, J., Comisión Federal de Electricidad, Augusto Rodin No. 265 MARTINEZ M, A., Instituto Politécnico Nacional, E. S. I. A., Apartado NIETO, J. A., Universidad Nacional Autónoma de México, Oriente No. 172 Postal 75 - 148 , D. F. No. 1115, D. F. MARTINEZ M ,C., I.S.T.M.E., Llantén 22, D. F. NUÑEZ G, A., Comisión Federal de Electricidad, Augusto Rodin No. 265 Sra. Concepción de Nuñez MARTINEZ P, E., Ingeniería Experimental, S. A., Manuel E. Gorostiza 42 OCHOA E, R. E., Departamento del Distrito Federal, Plaza de la Constitución Ciudad Sátelite, Estado de México OLIVERA B, F„ Secretaría de Obras Públicas, Matanzas 1043, D. F. Sra. Josefina F. de Martínez ORNELAS P, F., Petróleos Mexicanos, Francisco Ibarra No. 2 4 ,"Circuito MARTINEZ V, R., Petróleos Mexicanos, Guecrero 395 B 108, Unidad Fundadores", Cd, Satélite, Estado de México Tlatelolco, D. F. Sra. Magdalena de Ornelas MARTINEZ V, R., Petróleos Mexicanos, SupO’intendencia Const. y OROZCO S, R. V., Compañía Orozco y Orozco, Insurgentes Sur 421, Mant. Coatzacoalcos, Veracruz Edificio B - Desp 712, D .F . MATEOS, C.,- GEOTEC, S. A., Pitagoras 911 - 1 , D. F. OROZCO O, C. J., Orozco y Orozco, Versalles 316, Villafontana, Mexicali, Sra. de Mateos B. C. MATEOS L, A., Ingenieros Civiles Asociados, Minería 145, Edificio "C" Sra. Guadalupe O. de Orozco 3er. Piso, D. F. MEDINA D, Z., Secretaría de Obras Públicas, Extremadura 54, Depto. 30 OROZCO O, J. M., Secretaría de Obras Públicas, Galveston 36, Depto. 22 Mixcoac , D. F. Sra. Ernestina Orozco y Orozco MEDINA R, R., Secretaría de Recursos Hidráulicos, Rebsamen 113* Bis ORTIN G, V., Universidad Nacional Autónoma de México, Instituto de Ingeniería, D .F . MEDINA R, S., Instituto Mexicano del Cemento y del Concreto, A. C., Insurgentes Sur No. 1846, D. F. ORTIZ G, J. L., Departamento del Distrito Federal, Plaza de la Constitución MELGOZA P, C. A., SOLUM, S. A., Tajín 124, D. F. OSUNA C, F., Construcciones, Conducciones y Pavimentos, S. A., Colina de MENA F, M., Comisión Federal de Electricidad, Augusto Rodin 165 la Gacela 3, Fraccionamiento Boulevares, Cd. Satélite, Edo. de México MENDEZ C, F., Petróleos Mexicanos, Cerro de Juvencia 82, D. F. Sra. Victoria E. M., de Osuna Sra. Teresa L. de Mendez PADILLA C, E., Secretaría de Obras Públicas, Nicolás San Juan 1742 - 5, MENDOZA E, C. J., Instituto Mexicano del Cemento y del Concreto, A. C., Col. del Valle, D. F. Insurgentes Sur No. 1846, D. F. PALACIOS N, M. A., Comisión Federal de Electricidad, Apartado Postal MERINO 0 , G., Comisión Federal de Electricidad, Puebla 398 - 702 20 - 428, D.F. MEYER C, J., Secretaría de Recursos Hidráulicos, fylanuel M. Ponce 322*1 PALAFOX R, S., Comisión Federal de Electricidad, Ródano 14 • 5o. Piso MINABURO C, J. L., Tonantzin No. 6, Col. Anáhuac, D. F. PALAZUELOS B, L., Constructora y Fraccionadora Continental, S. A., MOEBS, J., Cimentaciones Técnicas S. A. de C. V., Schiller 418 - 103 Calzada de Tacubaya No. 6 , D .F . MONCADA I, C., Comisión Federal* de Electricidad, Administración de PANIAGUA E, W., SOLUM, S. A., Av. Universidad No. 9-7, D. F. Obras, Ródano 14, D. F. Sra. de Paniagua MONCAYO V, J. J., Universidad de Guadalajara, Facultad de Ingeniería, PAZ S, J., Comisión Federal de Electricidad, Depto. de Construcción, Guadalajara, Jal. Ródano 14, D. F. MONOBE G, J. A., Secretaría de Recursos Hidráulicos, J. García Icazbalceta PENICHE E, A., Peniche Echánove, S. A., Xochicalco 471, D. F. No. 79 -1 , D. F. PEREZ M, J., Construcciones, Conducciones y Pavimentos, S. A., Calle 9, MONROY M, M., Secretaría de Recursos Hidráulicos, Texcoco No. 123 No. 118, Col. Independencia , D. F. MONTEMAYOR, E., Ingenieros Civiles Asociados, Minería 145, Edificio Sra. Socorro A. de Pérez Montaño *'C", 3er. Piso, D. F. PEREZ S, A., Comisión Federal de Electricidad, Ródano 14 - 6o. Piso MOOSER, F., Comisión Federal de Electricidad, Planeación, Ródano 14 PEREZ S, F., Varsovia 36 • 5o. Piso. Col. Juárez , D. F. MORA B, G., Ingenieros y Arquitectos, S. A., Baja California 114 -402 PEREZCASTRO V, J., Construcciones de México, S. A. de C. V., MORA, E., ISTME, S. A., Niño Perdido 532, Depto. 4, D. F. California 308, D .F . MORA V, R., Dirección General FF. CC., Operación S. C. T., Retorno 3de PERLASCA E, R., Comisión Federal de Electricidad, Planeación, Ródano 14 Epsilon 25, Int. 102 , D. F. PICOS, M., ISTME, S. A., Navarra No. 117 - Depto. 1 , D. F. MORALES M, H., Petróleos Mexicanos, Sur. 49 No. 149 -2, Col. Prado Ermita PILATOWSKY V, A., CORR,S.A., U.N.A.M., Cali No. 682 , d .F. MORAYTA M, M., Tauro 137, Col. Prado Churubusco, D. F. PLIEGO CH, L. G., Compañía de Luz y Fuerza del Centro, S. A., Melchor Sra. de Morayta Ocampo No. 171-517 ,D .F . MORENO DE LA HOYA, S., Comisión Federal de Electricidad, Ródano 14 POHLENZ S, W., Compañía de Luz y Fuerza del Centro, S. A., Esteros 94 5o. Piso, D. F. PRINCE, J., Universidad Nacional Autónoma de México, Instituto de MORENO F, A., SOLUM, S. A., Minería 145, Col. Escandón, D. F. Ingeniería, D . F. MORENO G, E., Comisión Federal de Electricidad, L. O. C., Augusto PROBERT V, E., Comisión Federal de Electricidad, Planeación, Ródano 14, Rodin No. 265 , D. F. QUEZADA M, R., Comisión Federal de Electricidad, Ródano 14 - 5o. Piso

22 QUINTANA A, B., Colegio No. 300, Jardines del Pedregal, D. F. SALDAÑA G, F.( Comisión Federal de Electricidad. Augusto Rodin 265 Sra. de Quintana SALDAÑA G, V., Comision Federal de Electricidad, Ródano 14 - 6o. Piso QUINTANA, B., Cerrada de Reforma 139 - 5 , D. F. SANCHEZ B, R., Compañía Mexicana Aerofoto, S. A., Antonio Caso 142 QUINTERO N, M. J., Secretaria de Obras Públicas, Recife No. 70, Sra. de Sánchez Bringas Fraccionamiento Las Américas, Naucalpan, Estado de México SANCHEZ L, J. L., SOLUM, S. A., Minería 145 , D. F. QUIROZ C, R., Comisión Federal de Electricidad, Ródano 14 - 7o. Piso Sra. Silvia de Sánchez Lazcano RAMIREZ DE ARELLANO, L , Universidad Nacional Autonoma de México, SANCHEZ M, J. L., CONDISTRI, S. A., Liverpool 74-A , D. F. Instituto de Ingeniería, D .F . SANCHEZ T, R., Consultec Ingenieros, S. A., Insurgentes Sur 1020 - 103 Sra. Martha de Ramírez de Arellano SAN MIGUEL R. G, J., Construcciones, Conducciones y Pavimentos, S. A., RAMIREZ G, M„ Comisión Federal de Electricidad, Planeación. Ródano 14 Risco 206, D. F. RAMIREZ H, G. L., Universidad Nacional Autónoma de México, Sra. Carmen M. de San Miguel Liverpool No. 74 - A ,D . F. SAN MIGUEL R, V., SOLUM, S. A. y AEROFOTO, S. A.. Minería 145 RAMIREZ L, G., Petróleos Mexicanos, Av. Suderman 225 Bis, D. F. Sra. Hilda G. de San Miguel RAMIREZ L, G., Joaquín Fernández de Lizardi 3 6 - 1 , Col. Periodista SANTILLAN, E., Ingenieros Civiles Asociados, Minería 145, Edificio C. RAMIRO L, F., I.S.T.M.E., Llantén No. 22 , D. F. 3er. Piso, D. F. RAMOS G, A., Comisión Federal de Electricidad, Insurgentes Sur 571 SANTOYO, E., Universidad Nacional Autónoma de México. Gelati 72 RANGEL C, M., Secretaría-de Obras Públicas, Ave. Las Garita Andador 7 Sra. de Santoyo Casa 5 - 1 , D. F. SCHMITTER, J. J., SOLUM, S. A., Av. México 1256, Casa 3 Manzana 3 RESENDIZ, D., Universidad Nacional Autónoma de México, Instituto de Sra. de Schmitter Ingeniería , D. F. SERENA D, C., Cimentaciones Técnicas, S. A. de C. V., Schiller 418-103 Sra. Josefina C. de Reséndiz SERRALDE C, A., Constructora y Urbdnizadora, CUDESSA, Cádiz Norte 38-5 - RICO R, A., S. O. P., y U. N. A. M., Fuente de Cervantes 31, Lomasde Sra. Hilda D .G . deSerralde Tecamachalco, D. F. SERRANO R, P., Instituto Politécnico Nacional (E.S.I.A.), Atenas 31 Sra. de Rico Col. Clavería, D. F. RIOS L, € ., Presa El Palmito No. 146, Col. lrri{pción.*D. F. SHERWELL, A., ISTME, S. A., Colina del Kan No. 45, Boulevares, RIVAS V, J. A., Painco Rust, S. A., Marina Nacional 365 - 312, D. F. Estado de México RIVERA M, J., Universidad del Estado de México, Elena Cárdenas 106, SILVA E, C., Universidad Nacional Autónoma de México, Instituto de Col. Morelos, Toluca, Mex. Ingeniería, Cerro de Coporo No. 14, Campestre Churubusco.D. F. ROBLES L, L., Secretaría de Recursos Hidráulicos, Reforma No. 69, Piso 11 Sra. de Silva RODRIGUEZ, L. B., I.S.T.M.E., Calle B, Manzana 4 No. 20, D, F. SILVA G. G. F., Compañía Bufete Industrial, Tolstoi 22, D. F. RODRIGUEZ G, J. M., SOLUM, S. A., Minería 145, Edif. 2, D. F. SIMPSER, B., Edgar A. Poe 54 , D. F. Sra. de Rodríguez SOBRINO B, L. M., Secretaría de Recursos Hidráulicos, Cerro de la RODRIGUEZ N, J. L , Universidad de Nuevo León, Facultad de Ingeniería Libertad 404, Col. Campestre Churubusco, D. F. Civil, Ciudad Universitaria, Monterrey, N. L., SOLANO G, M., Departamento del Distrito Federal, Plaza de la Constitución RODRIGUEZ R, A., Ingeniería de Suelos, S. A., Prosperidad 12 * 304, D.F. SOSA C, W. M., I.S.T.M.E., Torres Adalid 913 - 2, D. F. RODRIGUEZ S, J., Construcciones, Conducciones y Pavimentos, S. A., SOSA G. R., Secretaría de Obras Públicas, Heriberto Frías 1431-9, Patricio Sanz 1729, D .F . Col. del Valle, D. F . Sra. de Rodríguez Sánchez Sra. de Sosa ROLDAN, D., Secretaría de Recursos Hidráulicos, Sierra Gorda 23 SOTO P, S., Comisión Federal de Electricidad, Planeación, Ródano 14 ROMERO B. A., Secretaría de Recursos Hidráulicos, Baltimore No. 106 SOTO Y, E., Petróleos Mexicanos, Grama 122, Col. El Rosario, D. F. ROMERO F„ H., Compañía de Éuzy Fuerza del Centro, S. A., Louisiana 200 Sra. Guadalupe de Soto ROMO O, M. P., Universidad Nacional Autónoma de México, Instituto de SPRINGALL, G„ GEOTEC, S. A., Cerro del Cubilete No. 32, Campestre Ingeniería, Picacho 287, Pedregal de San Angel, D. F. Churubusco, D .F . ROSATI, E., Comisión Federal de Electricidad, Augusto Rodin No. 265 Sra. de Springall ROSELL C, R., Secretaría de Recursos Hidráulicos, Av. Dos 76 - A, SPRINGALL, J. A., GEOTEC, S. A., Pitágoras No. 911-2 , D. F. -San Pedro de los Pinos, D. F. Sra. de Springall ROSENBLUETH,E., Universidad Nacional Autonoma de México, Instituto de STREU C, W., STAG, S. A., Ejército Nacional 530-302, D .F . Ingeniería, Ciudad Universitaria, D. F. SUAREZ L, E., Secretaría de Recursos Hidráulicos, Sinaloa 1245 Sur, Sra. Alicia de Rosenblueth Gómez Palacio, Durango ROUSSELON F, M., Secretaría de Recursos Hidráulicos, Av. Musset No. 335 TAMEZ G, E„ Universidad Nacional Autónoma de México, Explanada 1615 RUBIO G, A„ Comisión Federal de Electricidad, Ródano 14 • 6o. Piso Sra. Yolanda de Tamez RUIZ A, E., Universidad de Guadalajara, Facultad de Ingeniería, Guadalaja* Srita. Mayela Tamez ra. Jalisco TAPIA G, F.( Secretaría de Recursos Hidráulicos, Insurgentes Sur 420-26 RUIZ O, L., Secretaría de Recursos Hidráulicos, Av. Unidad Modelo 10 TAVERA, E., Compañía Minera Autlan, S. A. de C. V., Viena 4 • 3er.Piso Sra. Josefina de Ruíz O campo TECOTL G, F., Secretaría de Obras Públicas, 5 de Febrero 224 altos 9 RUIZ R, V. M., Sistema de Transporte Colectivo (METRO), Darwin TENA A, J., SOLUM, S. A., Minería 145, D. F . No. 142 - 2o. Piso, D. F. Sra. de Tena Sra. de Ruíz TERCERO B, C., Comisión Federal de Electricidad, Programación, Ródano 14 RUIZ V, M., GEOCA, S. A., Universidad Nacional Autónoma de México, TERCERO E, C., Comisión Federal de Electricidad, Ródano 14 - 5o. Piso Ave. Insurgentes Sur 1020 - 101 , D. F. TERZI T, G., Calle Madrid 37, D.F. Sra. de Ruíz Sra. de Terzi RUIZ V, G., Comisión Federal de Electricidad, Programación, Ródano 14 TINAJERO S, J., I.S.T.M.E., 13ava. Cerrada Adolfo Prieto No. 14, SAAVEDRA N, E., Secretaría de Recursos Hidráulicos, Sierra Gorda 23 Col. del Valle , D. F. SABORIO U, J., I.A.S.Y.C., Av. Alemania 256, Guadalajara, Jalisco TORIBIO A, J., Secretaría de Obras Públicas, Norte 164 No. 502 SAHAB, H. E., Secretarla de Recursos Hidráulicos, Av. San Jerónimo 621, TORRES H, F., Secretaría de Recursos Hidráulicos y Universidad Nacional Col. Lomas Quebradas, San Jerónimo, D. F. Autónoma de México, Presa No. 13, San Jerónimo Lídice, D. F. SAINZ O, I., Secretaría de Recursos Hidráulicos, Abraharp González No. 3, TORROJA S, F. J., Compañía de Luz y Fuerza del Centro, S. A., 4o. Piso. D. F. Melchor Ocampo No. 171-420, D .F . SALAZAR A. S., S. O. P. y U. N. A. M., Uxmal 370, D. F. TOVAR A, R., Secretaría de Obras Públicas, Zarco 2630, Chihuahua, Chih. Sra. Carmen P. de Salazar Sra. Concepción G. de Tovar SALAZAR R, J., Comisión Federal de Electricidad, Ródano 14 - 10o. Piso TREJO, M., Secretaría de Recursos Hidráulicos, Sur 69 "B" No. 133 SALCIDO T, J. M„ Ingenio’os Civiles Asociados, S. A., Zarco No. 2630, TREJO M, A., Secretaría de Recursos Hidráulicos, Severo Lara No. 16-A, Chihuahua, Chih. Depto. 1, Querétaro, Qro. 23 UGALDE V, R., Cimentaciones y Edificaciones, S. A., Acapulco 43-20 • DE JONG,D. C., Nederhorst, Royal Netherlands Harbour Works, Amstel 216, Sra. de Ugalde Amsterdam ULLOA O, A., Comisión Federal de Electricidad, Iglesia No. 459 DE RUITER, J., FUGRO, Richard Wagnerlaan 8, Voorschoten VACA H, J. F., Comisión de Estudios del Territorio Nacional y Planeación, Mrs. de Ruiter Colina del Kan 62, Naucalpen, Estado de México HOFLAND, P., Dwars, Weederik & Verhey, 7 Van Oldenbameveltlarn 4, VALENCIA A, S., Secretarte de Obras Públicas, Calle 8 No. 184, Amersfoort Col. Vértiz Narvarte, D. F. HORVAT, E., Public Works, Veemarkt 2, Rotterdam VALVERDE A, S., Comisión Federal de Electricidad, Ródano 14 - 6o Piso LOOF, W. H., Delft Soil Mechanics Laboratory Stieltjesweg 2, P. 0 . Box 69, VARGAS G, F„ Secretaría de Obras Públicas, Zempoala 524, Delft VARGAS N, V., Comisión Federla de Electricidad, Ródano 14 - 6o. Piso ONDERDELINDEN, C. J., Public Works Department, Wibautstraat 3, VAZQUEZ F, J., Proyectos y Administraciones, S. A., Insurgentes Sur 1877, Amsterdam 3er. Piso, D. F. ROEST, P. W., Rykswaterstant, R.W.S. Koningdtade 25, Den Haag Sra.de Vázquez Flores VAN DEN BERG, J. V., Grabowdty, Poort & Van Den Berg, Aramislaan82, VAZQUEZ O, J., Constructora El Aguila, S. A. de C. V., Melchor Ocampo Maastrich, No. 463 - 2o. Piso, D. F. Mrs. Van Den Berg Sra. de Vázquez VAN DER VEEN, C., Technical University, Waterworks Amsterdam, VAZQUEZ R, J. L., Secretarte de Recursos Hidráulicos, Circuito Cronistas 54. Condensatorweg, Amsterdam • Sloterdijk No. 136, Naucatpan de Juárez, Estado de México VAN WEELE, A. F., N. V. tot Aanneming van Werken, Brugweg 78, VEGA, F., SOLUM, S. A., Mínete 145. D. F. Waddinxveen Sra. de Vega VELASCO P, J. L., División del Norte 1024, D. F. NEW ZEALAND/NOUVELLE-ZELANDE VERGARA G, J., Comisión Fedo-ai de Electricidad, Ródano 14 - 7o. Piso BRICKELL, R. G., Box 30-A99, Lownhutt VIEITEZ U, L., Ingenieros Civiles Asociados, Schiller No. 152 • 1 Mrs. Brickell Sra. de Vieitez Utesa NORTHEY, R. D., Dept, of Scientific & Industrial Research, Soil Bureau, VIESCA V, J., Comisión Federal de Electricidad, Programación, Ródano 14 Private Bag, Lower Hutt VIGNAUD, R., GEOFIMEX, S. A., Amé-ica 245, D. F. Mrs. Northey Sra. Marte del Rosario de Vignaud PICKENS, A., Tonkin and Taylor, 100 Anzac Avenue, Auckland VILALTA LL, O., Petróleos Mexicanos, Cerro de Chinaco 114, Col. Mrs. Pickens Campestre Churubusco, D. F. TAYLOR, P. W„ University of Auckland, Civil Engineering Department, VILLANUEVA M, H. M„ Universidad de Nuevo León, Ecuador 114, Auckland, Private Bag. Col. Vista Hermosa, Monterrey, N. L. Mrs. Beryl M. Taylor Sra. de Villanueve VILLAREAL G, A., Secretarte de Recursos Hidráulicos, J.J. Fdez. de Lizardi NORWAY/NORVEGE No. 152, Circuito Novelistas, Cd. Sótelite, Estado de México VILLEGAS A, G., Secretarte de Obras Públicas, Jericó No. 32 , L). F. ANDRESEN, A. A., GEONOR A/S, NGI Forskningsvn 1, Oslo 3 VITE S, L. H., Laboratorios de la Ingeniería, A. C., Rochester 49 BERRE, T„ Norwegian Geotechnical Institute, Forskningsveien 1, Oslo 3 WOLTMAN R, J. H., Cimentaciones y Edificaciones, S. A., Acapulco 43-201 BJERRUM, L., Norwegian Geotechnical Institute, Forskningsveien 1, Oslo 3 Sra. de Woltman Mrs. Gudrun Bjerrum YARZA B, J., Comisión Fedoal de Electricidad, Ródano 14 * 3er. Piso DIBIAGIO, E., Norwegian Geotechnical Institute, Forskningsvn 1, Oslo 3 ZAMORA M, F„ Universidad Nacional Autónoma de México, Escocia 32, EIDE, 0 ., Forskningsveien 1, Oslo 3 Col. del Valle , D. F. FINBORUD, B., Thv. Meyergst. 9, Norsk Tgknisk Byggekontroll A/S, Oslo 5 Sra. Rosa Ma. de Zamora Mrs. Aud Finborud ZARATE A, M., Universidad Nacional Autónoma de México y GE OSO L,S. A., HAFSKJOLD, P. S., F. SELMER A/S, P. O. Box 256, Oslo 1 Pitágoras 1245 - 402, D. F. HJELDNES, E. I., Technical University of Norway, Trondheim 7034 ZEEVAERT, A., Torre Latinoamericana Desp. 2506, D. F. JANBU, N., Geoteknikk N. T. H., 7000 Trondheim ZEEVAERT, L., Universidad Nacional Autónoma de México, Isabel la KJAERNSLI, B., Forskningsveien 1, Oslo 3 Católica No. 68 • 4o. Piso, D. F. KJOLSETH, O., O. KJOLSETH A/S, Markalleen 28, Stabekk Sra. Celia A. de Zeevaert Mrs. Kjolseth ZONANA, J., Universidad Nacional Autónoma de México, Instituto de KUMMENEJE, 0 ., Broddes Vet 14, Trondheim Ingeniería, Schiller No. 219, Depto. 1,D. F. Mrs. Randi Kummeneje ZURITA Sr J. M., Construcciones, Conducciones y Pavimentos, S. A., OPSAL, F. W., Oslo Kommune, Prosjekterings, Kontoret, Mailundvn. 21, Fresnos No. 280 , D. F. Oslo 5 Sra. Berta S. de Zurita RELLSVE, T., 0 . Kjolseth A/S, Kirkerudlia 7, Sandvika Mrs. Rellsve MOROCCO/MAROC SENNESET, K., The Technical University of Norway, Klaebuveien 153, BENSOUSSAN, 25, Rué d'Azilal, Casablanca 7000 Trondheim CHAOUI, A., Rué de Bayonne 10, Rabat DI NIA, N., Comité Marocain de la Mócanique des Sois et des Roches, PANAMA Circonscription du SurTravaux Publics, Boulevard Mouloy Abderrahmane DE BELLO, E., Apartado 7219, Panamá 5 Casablanca HAKIMI, A., 25, Rué d'Azilal, Casablanca PERU/PE ROU MARIOTTI, M., Laboratorio Public d'essais, 25 rué d'Azilal, Casablanca MOUSSAOUI, M., Rué d'Aunis No. 52, Rabat CARRILLO G, A., Universidad Nacional de Ingeniería, Capac Yupanqui 957 • 603, Lima 11 NETHERLANDS/PAYS-BAS CHING WONG, J. N., Juan Cuglievan 1208, Chiclayo HUMALA A ,G., Universidad Nacional de Ingeniería, León Velarde839, Lima BEGEMANN, H. K. S. Ph., Delft Soil Mechanícs Laboratory, Stieftjesweg 2, MAGGIOLO R, O., Universidad Nacional de Ingeniería, Cesáreo ChacaItana P. O. Box 69, Delft No. 367, Miraflores, Lima BOEMMER, J. W., Massachusetts Instituto of Technology, 40 Trinrty Place, Sra. Susana M. de Maggiolo Boston, Mass. 021161, U. S. A. MARTINEZ V, A., Universidad Nacional de Ingeniería, Depto. de Geología, Mrs. Sophie Boemmer Eduardo de Habich No. 173, Urbanización Ingeniería, San Martín, Lima BOUTSMA, K., Veemrkt 2, Rotterdam 1 MICHELENA, R., Comité Peruano de Mecánica de Suelos, Paseo de la BRONS, K. F., Gouda N. F. Nedarhorst, Berliozlaan 4, Voorschoten Reforma 973 of. 12, La Victoria, Lima

24 MONTERO P, M. E., Gobierno Peruano, A w . Javier fa d o 570 Este, SPAIN/ESPAGNE San Isidro, Lima ANGUITA B, F., Sa-vicio Geológico 0 . P., Fernández de la Hoz 80, Madrid 3 Sra. Maria B. de Montero COLL, M., Geotecnia y Cimientos, S. A., Padre Damián 41, Madrid 16 PRIALE J, A., Comité Peruano de Mecánica de Suelos, Pachacutec 933-11, D A L -R E , R., SNCPOR, Velázquez 147, Madrid 2 Jesús María, Lima Sra. Ma. Angeles pal-re TONG M, J., General Garzón 1699, Lima 11 Srita. Arcadia Dal-re UCCELLI, C. A., Gallegos, Rios, Casabonne, Uccelli, Icochea. Ingenieros Srita. Magdalena Dal*re Consultores, Av. Central 671 • 8o. Piso, San Isidro, Lima Sr. Rafael Dal-re PHILIPPINES DE LOS SANTOS J, L., Ministerio de Obras Publicas, Lucha na 28, Madrid Sra. Elvira F. de los Santos LIMJUCO, L . Bureau of Public Highways, P. O. Box 1163, 2nd Street, ESCARIO, V., Laboratorio del Transporte y Mecánica del Suelo, Orense Port Area, Manila No. 45, Madrid SANTOS, J. C., Bureau of Public Highways, 22 Masbate, West Ave. Homes, Sra. Mana Rosa Travesado de Escario Quezon City FERNANDEZ B, M., 106 Bv. Pereire, París (17) Francia FERNANDEZ-RENAU, L. F., Grupo Rodio, (ZURICH), General Yegue 8, Madrid - 20 PORTUGAL Sra. Adelina Fernández-Renau JIMENEZ S, J. A., Laboratorio del Transporte M. O. P., Alfonso XII NO. 3 CARVALHO X, A., Hidro Eléctrica do Zézere, Avenida Sidónio Pais24-2o„ Madrid Lisbonne LORENTE, C., Diego de León No. 58 - 7o., Madrid 6 FOLQUE, J., Laboratorio Nacional de Engenharia Civil, Av. Do Brasil Sra. de Lorente Lisboa - 5 MAYOR, G., SNCP y OR, Raimundo Fdez. Vi liaverde, 59 Madrid 3 Mrs. Laura S. Folque Sra. Huici D. de Mayor MINEIRO C, A. J., Universidad Técnica de Lisboa, Instituto Superior ROMANA R, M., INTECSA, c/o CHAT, Paseo de Gracia 11, Barcelona 7 Técnico, Av. Barbosa Du Bocage - I X - lo . Esq., Lid»oa SERRET M, A., Servicio Geologico O. P., Fernández de la Hoz 80, Madrid 3 Sra. Maria Helena Terenas Mineiro URIEL R, S., Plaza de Manolete No. 8, Madrid 20 NASCIMENTO, U., Laboratorio Nacional de Engenharia Civil, Av. Roma 14, Sra. Pilar A. de Uriel 5o. D., Lisboa VALDERRABANO L, J., Ministerio de Obras Públicas, Dirección General de Carreteras, Av. Generalísimo, Madrid 3 REPUBLIC OF SOUTH AF RICA/REPUBLIQUE DE L'AFRIQUE DU SUD ZAPATA T, F., Fernán González, 44 Madrid 9 COLLINS, L. E., Construction Design & Planning (Pty.) Ltd., Box 23146, Joubert Park, Johannesburg DONALDSON,'G. W., National Building Research Institute, P. 0 . Box 395, SWEDEN/SUEDE Pretoria ELGES, H.F.W.K., Dept, of Water Affairs, Private Bag 313, Pretoria BERNELL, L., Swedish State Powv Board, Vfillingby, Fack, Stockholm HUGO, F., Bruinette, Kruger, Stoffberg & Hugo, P. 0 . Box 3173, Pretoria BRINK, R. A., Scandinavian Engineving Corp. ArtMlerigatan 42, Box 5511, JENNINGS, J. E., Department of Civil Engineering, Univvsity of the S -11485 Stockholm, Witwatarsrand, Johannesburg BROMS, B. B., Swedish Geotechnical Institute, Edlundavagen 16, 16240, K ANTE Y, B. A., Kantey, Templer, Loteryman 8t de Kroon, P. 0 . Box 3132, Vallingby Cape Town BUSK, G., GrundKonsuh AB, Rönnvägen 11, 122 35 Enskede Mrs. Joan Kantey Mrs. Barbro Busk LOUDON, P. A., South African Council for Scientific & Industrial Research, FAGERSTROM, H., VBB Vattenbyggbadsbyrfn, Linnegatan 2, Stockholm N. I. Road Research, P. O. Box 395, Pretoria Mrs. Kerstin Fagerström MULLER, D. S., Boart Drilling & Contracting Ltd., Turf Road, Boksburg FELLENIUS, B. H„ Swedish Geotechnical Institute, BanArg. 16, 11526 North, Transvaal P. 0 . Box 5279 Stodcholm Mrs. Muller FLODIN, N., c/o Swedish Geotechnical Institute, Ban4rgatan 16, 11526, PARRY—DAVIES, R., Cementation Co., P. O. Box 1128, Johannesburg Stockholm Mrs. R. Parry-Davies Mrs. Dagmar Flodin POOLE, J., University of the Witwatersrand, P. 0 . Box 28848, Sandring Ham, FORSSBLAD, L , AV Vibro-Verken, Box 1103, 171 22 Solna 1 Johannesburg FROIER, U., Hyltebergsv. 2, 43300 Partille Mrs. Jean Poole ^ s . Marianne Froier SPARKS, A. D. W., University of Cape Town, Dept, of Civil Engineering, JONEK, H., HSB: s Riksförbund, Tallvagen 8, 12163 Johanneshov Rondebosch, Cape Town Mrs. Barbro Jonek VAN DER MARWE, D. H., Bruinette, Kruger, Stoffberg 8i Hugo, KLERING, A., Vasaloppsväg 102, Hagersten P. O. Box 3173, Pretoria L IU A, N., National Association of Tenants' Savings and Building Societies, Mrs. Bertha Margarrtha Van der Merwe Strak vagen 20 A, S - 183 40, Täby WEBB, D. L , D. L. Webb and Associates, 1903 Eagle Building, 355 West LUNDSTROM, R. B., Scandiaconsult Int, A. B., Scandiaconsult Postbox, Street, Durban Stockholm 4 Mrs. Margaret Webb MARVE,J., GaotekniskaByran Göteborg, Götabergsptan 1,411 34 Göteborg Mrs. Annette Marve WEBER, H., Frankipile, S. A. (PTY) Ltd. 14, Avon Road, Viewcrest, SAHLSTROM, P., Hagoonsufc AB, Bandergatan 37, 11522, Stockholm Johannesburg Mrs. Birgitta Sahlström Mrs. Webv SANDEGREN, E., Statens, Jämvagar, K riftvagen 11, 18131, Lidingö WILSON, L C., Ninham Shand & Partners, P. O. Box 1347, Cape Town SANDQVIST, G., Viak AB, Majvagen 9, 175 00 Jakobdwrg Mrs. Daphne M. Wilson Mrs. Gunlög Sandqvist SJOQUIST, L. E., Viak AB, Blomodlärvagen 11, 162 40 Vällin^y Mrs. Gurlie Sjöquist RUMANIA/ROUMANIE STAL, T., Orrje & Co. Scandiaconsult, Vikingatan 69-B, 217 74 Mai mo BOTEA, E., Alexandru Donici 30, Bucharest 13 STEEN, B. G., Tempelmddarvagen 21 II, S-12734, Skarholmen, Stockholm SCHALLY, R. V., Metalúrgica! Project. Institute, 11, Strada bn Mincu, TELLSTEDT, R., Rolf Tellstedt AB, Fridkullagatan 27,412 62, Gothenborg Sect. 1, Bucharest 24 ftfrs. Dorothea Schally Mrs. Martha Tellstedt

25 THUROW, V., Halsingvorg Randersg 2 BISHOP, A. W., Univeristy of London, Dept, of Civil Engineering, Mrs. Gertrude Thurow Imperial College, South Kensington, London SW. 7 BOURNE, M. S., Soil Instruments Limited, 19 Grange Court Road, SWITZERLAND/SUISSE Harpenden, Herts BUR LAND, J. B., Building Research Station, Garston, Watford, Herts BALDUZZI, F., Université (Ecole Polytechn), Vawe, 37/39 Gloríastr, CARTER, A. CH., Clockhouse Engineering & Instrument, Co., New Barnet, CH - 8006, Zurich Herts CRIVELLI. G., Könizstrasse 74, 3000 Berne COLE, K„ Ove Arup & Partners, 13 Fitzroy St., London W1, P 6BQ, DAL VESCO, E., Zürcherstr. 62a. CH-8102, Oberehgstringen, Zurich COOLING, L. F., 19 Talbot Avenue, Oxhey, Watford, Herts Mme. Helen Dal Vesco Mrs. Colling DESCOEUDRES, J., Swissboring Ltd., Theaterstrasse 20, Zurich CORMIE, W. M., Crouch & Hogg, 18 Woodside Crescent, Glasgow, DYSLI, M., Société Generale Pour l'industrie, 71 Av. Louis Casai C. 3, Scotland 1216 Cointrin, Genève Mrs. Dorothy Cormie HAEFELI, R., Susenbergstr. 193,8044 Zurich CORNFIELD, G. M., The British Steel Piling Co. Ltd., 10 Haymarket, HALTER, H., Motor Columbus, Parfcstr. 27 5401 Baden CH. London, S. W. 1 HUDER, J., Institut Universitaire, Gloríastr. 35/39, CH-8006 Zurich DAVIES, R., Royal Military College of Science, 28 Fairthorne Way Mme. Hud er Shrivenham, Swindon Wilts JAECKLIN, F. P., W. A. Wähler & Ass., 3406 Rambow Drive, Palo Alto, Mrs. S. A. Davies San Francisco, California 94306, U. S. A. DENTON, P. E., Equipment Limited, Woodcook Hill, Harefield Road, LEPORI, A., Stump Bohr AG, Mühlebachstrasse 20, Zürich Rickmansworth, Herts, WD 31PL OTT, J. C., L3 Chemin Rieu, Gèneve FOSTER, R. H., The City University, St. John St., London, E.C.I. OTT A, L., Stump Bohr AG Zürich, Sphwandelstr., 18, 8802 Thalwil FROST, H. G., Ministry of Transport, Southwark St. London S.E.1 PEDROZZI, P., Lab. Tee. Strada, Via Ceresio 8, 6963 Pregassona GIBSON, R. E., King's College, University of London, 14 Temple Fortune PETRINI M, S. M., Stump de Venezuela C. A., Edif. Guarimba, 5o. Piso Lane, London N. W. 11 Oficina 5 B 5, Avda. Fco de Miranda, Caracas, Venezuela Mrs. Gibson Sra. Ruth Lang de Petrini GLOSSOP, R., Soil Mechanics, Ltd., Brane, Sancreed, Nr., Penzance, RABINOVICI, A., Balzari Blaser Schudel, Kramburgstr. 14, 3006 Bern Cornwall RECORDON, E., Ecole Politechnique Fedérale de Lausanne, Chemin de la Mrs. Sheila Glossop Suettaz, 15, 1008 Prilly Miss. Emma Glossop Mme. Elvire Recordon GREEN, P. A., Scott, Wilson Kirkpatrick & Partners, 26 Colet Gardens, REICHERT, E., c/o Stump Bohr GmbH, Leopoldstr. 62, D-8 München 23, London W. 14 Mme. E. Reichert GRIFFITHS, F. N., Howard Humphreys & Sons, Kennet House, Kings Road, SINNIGER, R., Electro - Watt, Fachstr 78, 8942 Oberrieden, Reading, RG1 3 BT, Berks Mme. Sinniger HAN, M., Wilkins & Wheaton Engineering Co., 171 Portage Street, STUMP, H.,Geotecnica Stump,S. A., Zona Residencial El Bosque, Manzana 5, Kalamazoo, Michigan, U. S. A., 49006 No. 8, Madrid 16, España Mrs. Margaret Han Sra. Edith Stump HANNA, T. H., University of Sheffield, Dept, of Civil & Structural,Eng., WACKERNAGEL, A., Grüner Brothers, Sissacherstrasse 61, 4000 Basle, Mappin Street, Sheffield 1 Mrs. Wackernagel HART, A. W., Wykeham Farrance Engineering, Ltd., 10, Burnham Avenue, WEBER, E., Stump Bohr SA, Hornhaldenstr 31, 8802 Kilchberg Zürich Beaconsfield, Bucks HAYDON, R. E. V., Central Electricity Generating Board, 33 Lea Wood Road thail and /tha Tl ande Fleet, Hampshire HOLT, J. B., Maunsell fit Partners, Glen House, Stag Place, London SW 1 BRAND, E. W., Asian Institute of Technology, Henri Dunant St., Bangkok Mrs. Holt Mrs. J. M. Brand HUTCHINSON, J. N., Imperial College University of London, 29 Cottenham MAHMOOD, A., c/o Dr. P. Mahmood, Dept, of Surgery, V. A. Hospital, 1430 Drive, Wimbledon, London S. W. 20 Kingsbridge Rd. Bronx, N. Y. 10468 U. S. A. JAMES, R. G., Cambridge University, "Simoun" Lt. Eversden, Cambridge MOH, Z. C., Asian Institute of Technology, Henri Dunant St., Bankok JONES, R. H., Wm. Coulson Ltd., 11a. Church Hill, Penn. Wolverhampton Mrs. Diana M. Moh LEWIS, W. A., Road Research Laboratory, Crowthorne, Berks NELSON, J. D., Asian Institute of Technology, Bangkok LISTER, N. W„ Road Research Laboratory, Crowthorne, Berkshire, LITTLE, A ..L., Little, Alan Lawson), Binnie & Partners, 172 Campden Hill TURKEY/TURQUIE Road, London W. 8 Mrs. Alan Lawson Little DASBILDGE, K., Temel Arastirma Anonin Sirketi, Halaskarçazicad, 3418 Sisli, Istanbul LOW, E., Soil and Rock Engineering Limited, Mangla Bridle Lane Loudwater, PEYNIRCIOGLU, A. H.,Ortaklar Sok 10, Mecidiyeköy, Istanbul Rickmansworth Hertfordshire WD3 4 JB TOGROL, E., Technical University, P. K. 30 Kadikoy, Istanbul Mrs. Elizabeth Low MARGASON, G., Road Research Laboratory, Crowthorne, Berks MARWICK, R., Sir Alexander Gibb & Partners, Telford House, 14Tothlll, U.S. S. R./U. R.S.S. Street Westminster, London SW 1 BAKHOLDIN, B., Gosstroy U. S. S. R., Karl Marks 4, Moscow MEIGH, A. C., Soil Mechanics Limited, 36, The Green Ewell, Surrey, JURGENSON, L., Tallin Polytechnic Institute, Tallin 26, Estonian, SSR Mrs. J. Meigh MASLOV, N„ MADF, Moscow, E-37, Fzmailocsky, Proezd 2a. KN. 56 NARANJO, A., Soil Instruments Limited, 112, Cromwell Road, London, NICOLAEV, V., GOèSTROY USSR, Marx Prospect 12, Moscow K-9 S. W. 7 NITCHIPOROVITCH, A., GOSSTROY, Moscow Karl Marks 4 NASH, J.K.T.L., I.S.S.M.F.E., c/o Institution of Civil Engineers, Great TSYTOVICH, N., Moscow Liv. Eng. Ac. of Sc. U.S.S.R., Gosstyoy, George Street, London S. W. 1. Marx PR. 4., Moscow Mrs. Nash O'REILLY, M. P., Ministry of Transport, Road Research Laboratory, Crowthrone, Berks UNITED KINGDOM PAINTER, W. T., University of Wisconsin, Department of Mechanics, University Wisconsin, Milwaukee 53201 U. S. A. BASSETT, R; H., Cambridge Univs-sity, The Thatch Cottage Hill Road PARRY, R. H. G., Cambridge University, Engineering Department, HempsteBd. Nr. Saffron. Walden, Essex Trumpington, St. Cambridge BENNETT, D. H., University of Aston in Birmingham, 440, Warwick Road, PULLER, M. J., Foundation and Structural Services Ltd., 39 Claygate Ave., Solihull, Warwickshire Harpenden, Herts

26 RAYMOND, G. P., Queen's University Kingston Ontario, Canada BAKER, W. J., University of Detroit, 17166 Fairfield, Detroit, Michigan ROSCOE, K. H., Cambridge University, Engineeing Dept., Trumpington St. 48221 Cambridge CB2, 1PZ, United Kingdom Mrs. Carol A. Baker ROWE, P. W., University of Manchester, X Flat sand Road, Wilmslow BALL, D. G., Metcalf fit Eddy Inc. 35 Addison St., Arlington Mass., 02174, Cheshire Mrs. Ball SARGENT, J. H., Dredging Investigations Limited, Port Causeway. BAYLISS, J. R., Rust Engineering Company, P. O. Box 101, Birmingham Bromborough, Cheshire Ala. 35202 Mrs. Brenda P. Sargent Mrs. Beyliss SEROTA, S., Foundation Engineering Ltd., 111 Westminister Bridge Rd., Lambeth, London, S. E. 1. BECKRECK, L. N., Applied Geodata Systems, Me., 675 Mass. Ave., Mr. J. Petty Combridge, Mass. 02139 SHORT, A. G., Geotechnical & Congrete Services Ltd., Banner 0*088 Hall, BELL, J. R., 420 Ponderosa Ave. N. W. Corvallis, Oregon 97330 Sheffield S 11 8 PD BERK, M. B. III., Fruco & Associates, Inc., 4711 Parc Orleans Court, SKEMPTON, A. W., London University, Imperial College, London S. W. 7, Bridgeton, Missouri, 63042 Mrs. Mary Nancy Skempton BERRY, H, D. F., Cía. Mexicana Aerofoto, S. A., Antonio Caso 142. SLIWINSKI, Z., Cementation Piling and Foundation, 41-A Els/vorthy Road, Sra. Elizabeth Berry BIELAK, J., California Institute of Technology, Pasadena, CalH. 91102 London N W 3 BIGHAM, R. E„ Spencer J. Buchanan & Assoc., P. O. Box 672, Bryan, SOMERVILLE, S. H., G. Wimpey & Co. Ltd., 27 Wattleton Road, Texas 77301 Beeconsfield, Buckinghamshire SUTHERLAND, H. B., University of Gbsgow, Department of Civil Eng., BORNSTEIN, M. S.. P.B.Q. fit D., Inc., 227 Argonaut Avenue, San Francisco, California 94134 Glasgow, W. 2, Scotland Mrs. Sutherland BRENNER, R. P.. University of Michigan, 2322 G.G. Brown Lab. SYMONS, I. F., Road Research Laboratory, Crowthorne, Berks (Dept, of Civil Eng.), Ann Arbour, Mich. 48105 TAYLOR, R. K., University of Durham, Science Laboratories, South Rd., BROMWELL, L G., Massachusetts Institute of Technology, Room 1-378, Durham City Cambridge, Massachusetts, 02139 VAUGHAN, P. R., Imperial College, 41a. Eton Place, Eton College Rd., Mrs. Joan Bromwell London, N .. W. 3 BROWN, R. E., Law Engineering Testing Co., P. 0 . Box 1231, Birmingham, VICKERY, K. W., Cementation Fround Engineering Ltd., 32 Greenacres Ala. 35201 Avenue, Ickenham, Uxbridge, Middlesex Mrs. Barbara S. Brown WAKELING, T. R. M., Foundation Engineering Ltd., I l l Westminster BRUMUND, W. F., Georgia Institute of Technology, School of Civil Bridge Road, London S. E. 1 Engineving, Atlanta, Georgia 30332 Mrs. T . R. M. Wakeling BRUSEY, W. G., Ebasco Services Inc., 2, Rector St. New York City , WARD, W. H., Building Research Station, Garston, Watford, Herts. N. Y. 10006 WOOD, A. M. M., Sir William Halcrow & Partnvs, Newcombe Ho u m , BUCHANAN, S. J., Texas A & M University and Spencer J. Buchanan fit 45 Notting Hill Gate, London, W. 11 Assoc, P. 0 . Box 672, Bryan, Texas 77801 Mrs. Wood Mrs. Ellen Buchanan WROTH, C. P., Cambridge University, 1 Sherlock Road, Cambridge BUCKNAM, R. E., Haley fit Aldrich, Inc., 238 Main Street, Cambridge, WYKEHAM, G. B., Wykeham Farrance Eng., Ltd., Weston Road, Slough, Massachusetts, 02142 Bucks, CALHOON, M„ Westenhoff & Novick, 222 West Adams St.. Room 1100, Mrs. K., Wykeham Chicago, Illinois 60606 CALHOUN, D., University of New Mexico, 7201 Vista del Arroyo N.E., Albuquerque, New Mexico 87109 Mrs. Jane Calhoun UNITED STATES OF AMERICA/ETATS-UN1S D'AMERIQUE CAMPBELL, J. D., University of Illinois, 2212 Civil Engineeing Building, ABDUN-NUR, E. A., 3067 So., Dexter Way, Denver, Colorado, 80222 Urbana, Illinois 61801 ALDRICH, H. P., Haley & Aldrich, Inc., 238 Main Street, Cambridge , CAPOZZOLI, L. J., Louis J. Capozzoli fit Assoc., Inc., 10428 Cyprus Mass. 02142, Cedar Street Baton Rouge, Louisiana, 70816 Mrs. Louis G. Aldrich, Mrs. Laura B. Capozzoli Harl Aldrich Jr., CARDOSO, A., Lawengineering Testing Company, 15B8 Alderbrook Rd., Barbara Aldrich, Jean Aldrich, Decatur, Georgia, 30033 Kent Aldrich Mrs. Shelby de Cardoso CARRION CH, J., A.I.M.E., Guillermo Barroso No. 18F„ Fracc. Irvdl. ALIZADEH, M., Fruco and Associates St., 329 Country Club Drive, Ballwin, Missouri 63011 Las Armas, Tlalnepentla, México ANDERSLAND, 0 . 8., Michipn State University, Dept, of Civil Engineering, CASAGRANDE, A., Harvard University, Pierce Hall, Cambridge, Mass. 02138 East Lansing, Michigan 48823 Mrs. Erna M. Casagrande ANDERSON, C., 16027 West 5th Avenue, Wheatridge, Denver, Colorado CHAN, C. K„ University of California, 636 Fourth Ave. San Francisco, 80033 California, 94118 Mrs. Anderson Mrs. Diana M. Chan ARDAMAN, M. E., Ardaman & Associates, P. 0 . Box 13003, Orlando, CHANG, Y. C. E., 1208 Florence Ave., Evanstone, Illinois, 60202 Florida 32809 CHASE, A. P., A. A. M a th is , Inc., 41 West Santa Clara Street, Arcadia, ARMAN, A., Louisiana State University, 1148 Verdun Drive, Baton California, 91006 Rouge, La. 70810 Mrs. Chase ARULANANDAN, K., University of California, Dept, of Civil Engineering, CHENG, R. Y. K., Old Dominion University, 1115 Bedford Ave., Norfolk, 1015 Acacia Lane, Davis, California 96616 Virginia 23508 AVILES, D. E., Trinity Eng. Testing Corp., Apt A-223, 1500 E., Riverside CHILDRES, W. H.,Tennessee Valley Authority, Knoxville,Tennessee 37902, Austin, Texas Mrs.W. H.Childres BAKER, C. N., Jr., Soil Testing Services, Inc., I l l Pfingsten Road, CHRISTIAN, J. T., Maaachusetta Institute of Technology, Room 1-380, Northbrook, Illinois 60062 Cambridge, Mass. 02139 Mrs. Baker CHRYSSAFOPOULOS, H. S., Dames fit Moore, 5 Horiwon Road, Apt. 2002, BAKER, G., Woodward • Clyde fit Assoc. Inc., 1425 Broad Street Fort Lee, N. J. 07024 Clifton, New Jersey, 07012 CHRYSSAFOPOULOS, N„ Dames & Moore, 100 Church St., New York, Mrs. G. L Baker N. Y. 10007

27 CHU, T. Y., University of South Carolina. College of Engineering, FOCHT, J, A., McClelland Engineers, Inc., 6100 Hillcroft Houston, Texas, Columbia, S. C. 29208 77036 CLARENCE H. C, J., Howard University, 1703 East-West Highway, Mrs. Focht Apt. 622, Silver Spring, Maryland, 20910 FUENTES, G., 1505 Ashford Ave. Apt. 7-B, Santurce, Puerto Rico CLARK, D. E„ Looper, Clark y Associates, 940 E. Meadow Dr., Palo Alto, GEDNEY, D„ U. S. Bureau of Public Roads, Federal Highway Adm., Calif. 94040 9326 Boothe Street, Alexandria, Virginia 22309 COLLINS, J. P., M. I. T,, James P. Collins & Assoc., Applied Geodata GIBBS, H. J., Bureau of Reclamation Building 56, Denver Federal Center, Systems, Inc., 675 Mass. Ave. Cambridge, Mass. 02139 Denver Colorado 80225 CONWELL, F. R„ John A. Blume & Associates, 4780 Stratford Ave., Mrs. H. J.,Gibbs Fremont, California 94105 GLENN Ml, A. J., Law Engineering Testing Co., 3809 Carmel Forest Mrs. Eleanor Conwell Charlotte, N. C. 28211 COWHERD, D., Bowser-Morner Testing Laboratories, P. O. Box 51, Mrs. Glenn Dayton, Ohio 45419 GOLDEN, J. C., U. S. Army Corps of Engineers, 401 Grand Blvd., Mrs. Jeanne, Cowherd Huntington, West Virginia COX, W. R., Tera, Inc., 1409 Old Wagon Road, Austin, Texas 78746 Mrs. J. C. Golden Mrs. Betty D. Cox GOODING, P. H„ Law Engineering Testing Company, P. O. Box 5728, Mrs. Myrle Dudley Jadcsonville, Florida 32207 CRISP, R. L. Jr., U. S. Army Corps of Engineers, 30 Pryor Street Mrs. P. H. Gooding 510 Title Bldg., Atlanta, Georgia 30303 GORDON, B. B„ California Dept, of Water Resources, 4420 Stoney Way, D'APPOLONIA, D., Massachusetts Institute of Technology, 30 Centre St.. Carmichael, California, 95608 Watertown, Mass 02172 Mrs. Dorothy Gordon Mrs. Eileen J. D'Appolonia GRAY, D. H., University of Michigan, 1520 Longshore Dr., Ann Arbor, D'APPOLONIA, E., E. D'Appolonia Consulting Engineers, Inc., 1177 Michigan 48105 McCully Drive Pittsburgh, Penn. 15235 Mrs. Sally Ann Gray Mrs. E. D'Appolonia GREENLEE, C. W., Gribaldo, Jones, Assoc. 4004 Freed Avenue, San Jos4 , Linda D'Appolonia California, 95117 Mark D'Appolonia Mrs. Greenlee DAWSON, A. W., Universidad Nacional Autónoma de México, Instituto de GRONOWICZ, A., Argus Pressure Grouting Services, Inc., 22000 Ryan Rd., Ingeniería, Ciudad Universitaria, México, D. F. Warren , Michigan, 48091 Sra. Alejandra de Dawson GRUBBS, E. C., Grubbs Consulting Engineers, Inc., Post Office Box 2453, DAWSON, R. F„ University of Texas, 723 Park Blvd., Austin,Texas 78751, Little Rock, Arkansas 72203 Mrs. R. F. Dawson Mrs. Martha Grubbs DECKER, R. S., U. S. Department of Apiculture, Soil Conservation Service GUILD, CH. L., American Drilling fit Boring Co., Inc., 100 Water St., 810 No. Coddington, Lincoln, Nebraska 68528 East Providence, Rhode Island, 02914 Mrs. Ferne Decker GUINNEE, J. W., Highway Research Board, 1509 Flora Lane. Silver Spring, DEL CASTILLO V, R., A.I.M.E., Reforma 403 -1006, México, D. F. Maryland 20910 DENNIS, C. E., U. S. Department of Agriculture, Soil Conservation Service Mrs. Charlotte H. Guinnee 6700 South Street, Lincoln, Nebraska HALL, E. 0.. Geo-Testing, Inc.. 45 Mitchell Boulevard. San Ratael, DE SALVO, J. M., Joseph S. Ward fit Assoc., 91 Roseland Avenue, California 94903 Caldwell, New Jersey 07006 Mrs. Barbara Hall DIXON, D. A., Panams’ican Petroleum CORP, P. O. Box 591 Tulsa HALL, J. R., E. D’Appolonia Consulting Engrs., 3546 North Hills Rd„ Oklahoma 74102 Murrysville, Pennsylvania 15668 DONOVAN, N. C„ Dames fit Moore, 500 Sansome Street, San Francisco, HALPERT, H. N„ Hugo N. Halpert Assoc. 15103 West Eight Mile Road , California 94111 Detroit, Michigan, 48235 DOWDING, C. H., University of Illinois, 2212 Civil Engineering Building Mrs. Ruth S. Halpert Urbana, Illinois 61801 HAMPTON, D., Howard University, Dept, of Civil Engineering, Washington, Mrs. Dowding D. C. 20001 DRNEVICH, V. P., University of Kentucky, Dept, of Civil Engineering, HANCOCK, CH., Slope Indicator Co., 817 E Hamlin St., Seattle, Wash. 98102 Anderson Hall, Lexington, Kentucky, 40506 Mrs. Genevieve Hancock DUDLEY, J. H., California State College, 6901 E. 11th Street, Long Beach, HANDY, R. L , Iowa State University, 2813 Aurora Ave., Des Moines, California 90815 Iowa 50310 Mrs. Lilian Dudley HANSMIRE, W. H., University of Illinois, 1218 J Street, Fairbury, DUNCAN, J. M., 9 Franciscan Way, Kensington California 94707 Nebraska 68352 Mrs. Duncan HARDIN, B. O., University of Kentucky, 767 Bravington Way, Lexington DUNNIGAN, L. P., U. S. Department of Agriculture, Soil Conservation Kentucky 40503 Sevice, 727 West Avon Road, Lincoln, Nebraska 68505 Mrs. Anita Jane Hardin Mrs. Cecilia Dunnigan HARDING, R., Harding, Miller, Lawson fit Associates, 55 Mitchell B M . EMRICH, W. J., McClelland Engineers, Inc., 3000 General DeGaulle Dr., P. O. Box 3030, San Rafael, Calif. 94902 New Orleans, Louisiana 70114 HARPER, W. J., Southwestern Laboratories, 9702 Blankeship, Dr., Houston, Mrs. Emrich Texas 77055 ENGLE, R., Smithsonian Institution, 1111 University Blvd. W., Silver HARR, M. E., Purdue University, School of Civil Engineering, Lafayette, Spring, Maryland, 20902 Indiana, 47907 ESRIG, M. I., Dames fit Moore, 100 Church Street, New York, N. Y., 10007 Mrs. Florence Harr EVANS, K. H., University of Missouri 804 Edgewood, Columbia, HARTMANN, B. E„ Mile High Drilling Co., Inc., 16027 West 5th Avenue, Missouri Wheatridge. Denver. Colorado 80033 FEDERER, D. L , David L. Federer & Associates, 175 W Wieuca Rd. Ne., HEDGES, CH., Bechtel Corp. 9124 Edgewood Drive, Gaitherd)urg Md., Atlanta, Georgia 30305 20760 FELD, J., 114 E. 32 St., New York 10016 Mrs. Hedges Mrs. Ethel Feld HENKEL, D. J., Cornell University, Hollister Hall, Ithaca. N.Y. 14850, FENSKE, C. W., McClelland Engineers, Inc., 6100 Hillcroft. Houston, Mrs. Margaret Henkel Texas 77036 HEUER, R. E., A. A. Mathews, Inc., 41 West Santa Clara Street, - FILLIP, N. M., CALWELD, 9200 Sorensen, Santa FeSprinqs, Calif 90670 Arcadia, California 91006 FISCHER, J. A., Dames fit Moore, 1300 Rock Ave., J-2, No. Plainfield., Mrs. Heuer N. J., 07060 26 KINGHAM, R. I., The Asphalt Institute, 8904 Church Field Lane HILF, J. W., Bureau of Reclamation, U. S. Department of the Interior 6535 East Nevada Place. Denver, Colorado 80222 Laurel, Maryland 20810 Mrs. Edith Kingham Mn. Blanche B., Hitf HINDO, K., Michigan Drilling Company, 14555 Wyoming Avenue, Detroit, KNIGHT, J. K„ National Soil Services. Inc., 4087 Shilling Way. 75237 Dallas, Texas Mich. 48238 Mrs. Hindo KO, H. Y., University of Colorado, Department of Civil Engineetng, HIRSCHFELD, R. C., Massachusetts Institute of Technology, Room 1-330, Boulder, Colorado 80302 Cambridge, Mass. 02139 KOVACS, W. D., University of Missouri, Dept, of Civil Engineering, Rolla, Mo. 65401 HIRSCHMANN H, T., AA.P.G. • G.S.A., Calle 4 No. 6, Fraccionamiento KRAVETZ H, G., American Society of Civil Engineers, Apdo. Postal 1134, Alee Blanco, Naucalpan, Edo. de Mexico San Salvador, El Salvador HIRST, T. J., Lehif^i University, Fritz Engineving Laboratory, Bethlehem, KRIZEK, RJ., Northwestern University, 1201 Vernon Drive, Glenview, Pa. 18015 Illinois 60025 HOLLAND, C. N., Box 77101 Station C, Atlanta, Georgia 30309 Mrs. Claudia Krizek HOLTZ, W. G., Private Consulting Engineer, 3250 Moore St., Wheel Ridge KUESEL, T. R., Parsons, Brinckehoff, Quade & Douglas, 111 John Street, Colorado 80033 New York City, New York 10038 Mrs. Wesley G. Hottz LABASTIE, J. G., Law Engineering Testing Company, 412 Plasters Ave., HORN, H. M„ 77 Orange Road, Apt. 88 Montclair, New Jersey, 07042., P. 0 . Box 13815, Atlanta Ga. 30324 HOUGH, 0. K., 114 No. Tioga St., Ithaca, New York, 14850 Mrs. Labestie Mrs. Hough LACROIX, I., Woodward-Clyde & Assoc. Inc., Two Pennsylvania Plaza Rm, HOWE, R. H., Pennsylvania Department of Highways, 2911 Chestnut St., 1965, New York. N. Y. 10001 Camp Hill, Penn 17011 RUCK, RU Robert L. Huck & Associates, Inc., 844 Madline Court,, LADD, CH. C., Massachusetts Institute of Technology Room 1-348, Baton Rouge, Louisiana 70815 Cambridge, Mass. 02139 HUDSON, W. R., University of Texas, Dept, of Civil Engineering, 236 LA GATTA, D., Harvard University, Piece Hall, Dept, of Soil Mechanics, Engineeing Science BkJg., Austin, Texas 78712 Cambridge, Mass. Mrs. Hudson LAMB, G. E., George E. Lamb and Associates, Consulting Engineers, 3503- HUMPHRIES, W. K., University of South Carolina, College of Engineving. 47th Avenue NE. Seattle, Washington 98105 Columbia, S. C. 29208 LAMBE, T. W„ Massachusetts Institute of Technology, Russell St., HUNTER, A., Fruco and Associates, 1706 Olive St., St. Louis, Missouri Carlisle, Mass. 01741 Mrs. A. H. Hunter Mrs. Catharine Lambe IDRISS, I. M., Dames & Moore 500 Sansome Street, San Francisco, California LANE, K., Corps of Engineers, 621 Beverly DR., Omaha, Nebr, 681-14 94111 LARSON, W. E., University of Minnesota, 201 Soil Science Building , INGRAM, W. B., Shell Development Company, 8411 Breasdale, Houston St. Paul, Minnesota 55101 Texas 77071 Mrs. Larson JAMES, R. L , U. S. Army Engineers, 9543 Mossridge Dr., Dallas, Texas LEE, K., University of California, Dept, of Engineering, Los Angeles. 75238 California, 90024 JANES, H. W., Whitman Requedt & Associates, 1304 St. Paul Street, Mrs. Lee Baltimore, Maryland 21202 LEE, T. M., San Fernando Valley State College, Northridge, Calif. 91324 Mrs. Anna Janes LEFEVRE, E. W.. University of Arkansas, C. E. Dept., Fayetteville, Miss. Rebecca Janes Ark. 72701 JIMENEZ—QUINONES, P., University of Puerto Rico, Box 3253, Mayaguez, LENNERTZ, C. R., The H. C. Nutting Company, 4120 Airport Road, Puerto Rico Cincinnati, Ohio 45226 Mrs. Ana R. de Jimenez LEONARD, R. J., University of Kanas, Civil Engineering Dept., Lawrence. JOHNSON, J. B., U. S. Air Force, 218 Gray Plaza, Apt. 15, Scott AFB, Kansas, 66044 Illinois 62225 Mrs. Charlotte Leonard JOHNSON, S. J., Waterways Experiment Station, Corps of Engineers, LEONARDS, G. A., Purdue University. School Civil Engineering, Lafayette, 229 McAuley Dr. Vicksburg, Miss. 39180 Ind. 47907 JOHNSTON, M. M., U. S. Army Corps of Engineers, 1300 Army Navy Drive, Mrs. G. A. Leonards Arlington Virginia, Apt. 910 David Leonards JONAS, E. TAMS, 12 Timbe Top Trail Wilton, Conn 06897 Helen Leonards Mrs. Sarah Jonas LESLIE, D. D., 630 Sansome St., San Francisco. California, 94111 Mis. Anna Marie Jonas Mrs. Leslie JONES, R. A., Tennessee State Uniw sity. Meadowlawn Route 1, Brentwood LEWIN, D. V., 705 The Arcade, Cleveland, Ohio 44114 Tennessee, 37027 Mrs. Lewin Mrs. Patricia Jones LEWIS, K. H„ Univerrtty of PittriHirg, 113 Engineering Hall, Dept, of KAPP, M. S., Port of N. Y. Authority, 74 Gage Road, E. Brunswick, Civil Engineering, Pittsburg, Pa., 15213 N. J. 08816 Mrs. K. H. Lewis KAROL, R., Rutgers University, 261 S. Adelaide Ave. Highland Park LEWIS, S. P., CALWELD, 9200 Sorensen, Santa Fe Springs, Calif. 90670 N. J. 08904 LINELL, K. A., Department of the Army, U. S. Army Cold Regions Mrs. Gussie Karol Research & Engineering Laboratory, Hanover, New Hampshire 03755 KAUFMAN, R., U. S. Army Engineers, Lower Mississippi Valley Division, LIU, T. K., Haley & Aldrich, Inc., 238 Main St., Cambridge, Mass, 02142 P. 0 . Box 80, Vickd>urg Mississippi 39180 LOUGHNEY, R„ Wellpoint Dewaterlng Corp. 2407 Rockville Ctr. Pkwy., KELLY, R., Richard Jr. Kelly Co. Inc., 117 Liberty Street. New York, OCEANSIDE, New York. 11572 N. Y., 10006 Mrs. Mary Eileen Loughney Mrs. Eilleen Kelly LOWE, J. III., Tippetts-Abbett-McCarthy Stratton, 375 Park Ave., New KENNEDY, C. M., Law Engineering Testing, Co., 396 Plasters Avenue, York, N. Y., 10022 NE, P. 0 . Box 1 $ 0 8 , Atlanta, Georgia, 30324 Mrs. J. Lowe Mrs.'C. Kennedy M is. Barbara Lowe KILMAN. J., Brainard - Kilman Drill Co., P. 0 . Box 487, Tucker, M is. Lowe Georgia 30084 LOWNEY, J. V., John V. Lowney & Associates, 3507 Alma St., Palo Alto Mrs. Mary Helen Kilman Calif. 94306 KING, E.,Parsons, Brinckerhoff, Quade & Douglas, Inc., 1731 Lexington Av., LUKAS, R. G., Soil Testing Services, Inc., 111 Pfingsten Road, Northbrook, San Mateo. California 94402 Illinois, 60062 Mrs. Elwyn King Mrs. R. G. Lukas

29 \ LUM, W., Walter Lum Associates, Inc., 3030 Waiakae Avenue, Honolulu, NELSON, R. E., Soil Conservation Service USDA, 16 Stratford Road., Hawaii, 96816 Springfield, Pa. 19064 LUNDGREN, R., Woodward-Cyde & Assoc., 2730 Adeline Street, Oakland , NEWLIN, CH. W., Arizona State University, College of Engineering Sciences, California 94607 ASU, Tempe, Arizona 85281 LUSCHER, U., Woodward-Clyde & Assoc., 2730 Adeline Street, Oakland, NEWTON, C. T., Swindell-Dressier Company, 441 Smithfield Street, C. A., 94607 Pittsburg, Pa., 15222 LYSMER, J., University of California, Dept., of Civil Engineering, Berkeley Mrs. C. T. Newton California 94720 NEYER, J. C., Hugo N. Halpert Associates. 15103 West Eight Mile Road, MADUKE, B. I., Dames & Moore, 500 Sansome Street, San Fransicco, Detroit, Michigan, 48235 California 94111 Mrs. Judy Neyer Mrs. Orysia 0 . Maduke NIKOLAISEN, H., c/o Dames & Moore, 500 Sansome St., San Francisco, MANDE L, P. J., Dames & Moore, Consulting Engineers, 1360 Clay, Calif. 94111 San Francisco, Calif., 94109 NOORANY. I., San Diego State College. School of Engineering, San Diego MANN, G. D., American Testing & Engineering Corp., 8102 Bayberry Court California 92115 Indianapolis, Indiana NORUP, W., Geodex International Inc., P. O. Box 385 Glen Ellen, Mrs. Mann Calif. 95442 MARTIN, C. K., Bums & McDonnell Engineering Co., 8412 Locust Street, NOVICK, D., Westenhoffand Novick, Inc., 222 W. Adams Street - Room 1100 Kansas City, Missouri 64131 Chicago, Illinois 60606 Mrs. J. A. Martin Mrs. Minna Novick MARTIN, W. 0 „ Tippetts-Abbett McCarthy-Stratton, 333 East 30 Street, OCCHIPINTI, S. J., Federal Power Commission, 1111 Univ. Blvd W 1403, New York, New York 10016 20902 Silver Spring, Maryland Mrs. Martin OLSEN, H. W., U. S. Geological Survey, 345 Middlefield Road, Menlo Park, MCCLELLAND, B., McClelland Engineers, Inc., 6100 Hillcroft, Houston, California 94025 Texas 77036 OSTERBERG, J., Northwestern University, Dept, of Civil Engineering MCMASTER E. R., Metropolitan Engineers, 12550 4th N. W., 98177 Seattle, 4049 Bunker Lane, Wilmette, Illinois 60091 Washington Mrs. Ruth Osterberg Mrs. Marilyn McMaster OSTROW, J. D., James D. Ostrow Consulting Engineer, 6048 Russell Ave.So. Kathryn McMaster Minneapolis, Minnesota 55410 Robert McMaster Mrs. Ostrow MCNEILL, R. L , Woodward-Clyde and Associates, 758 N. Batavia Street, PAASWELL, R. E., State University of New York, 211 Summit Avenue, Orange, California 92667 Buffalo, New York, 14214 Mrs. Joan Ann McNeill PARCHER, J. V., Oklahoma State University, 1024 West Knapp Ave., Mr. Robert P. McNeill, Stillwater, Iklahoma, 74074 Miss. Joan Ann McNeill PARKER, K W., University of Illinois, 2230 Civil Engineering Bldg., MELZER, K. J., USAE Waterways Experiment Station, Vicksburg, Miss., Urbana, Illinois, 61801 39180 Mrs. Karen Parker Mrs. Anna M. Melzer PARSONS, J. D., Mueser, Rutledge, Wentworth & Johnston, 309 Elm. Rd MITCHELL, J. K., University of California, Department of Civil Engineering, Briarcliff Manor N. Y. 10510 Berkeley, Calif. 94720 Mrs. J. D. Parsons Mrs. Virginia Mitchell Mrs. James Parsons Jr., MOORE, CH. A., University of Illinois at Chicago Circle, Dept, of Matls.,, PARTOS, A„ Site Engineers, Inc., 453 S. Park Dr., Collingswood, Engrg., Chicago, III., 60680 New Jersey, 08108 MOORE, J. C., University of Illinois, 506 W. Monroe St., Springfield, PECK, R. B., University of Illinois, Civil Engineering Building, Urbana, Illinois, 62704 Illinois 61801 MOORE, R. F., Moore & Taber, 1473 Kensington Dr., Fullerton Calif. 92631 Mrs. Peck Mrs. Margaret Moore PEDERSON, L , University of Minnesota, 3437 Nancy Place, St. Paul, MOORE, W. M., Texas A .& M University, Texas Transportation Institute, Minnesota, 55112 College Station, Texas 77843 Mrs. Pederson Mrs. Randa L Moore PERKINS, R. L., MCCIelland Engineers, Inc., 6100 Hillcroft Houston, MOORHOUSE, D., Woodward-Clyde & Assoc. Inc., 1425 Bruad Street., Texas 77036 Clifton, New Jersey 07012 Mrs. Perkins Mrs. Donis Moorhouse PERLOFF, W. H., Purdue University, School of Civil Engineering, Purdue Miss. Janis Moorhouse University, Lafayette, Indiana 47907 MORIN, W. J., Lyon Associates, Inc., P. O. Box 3715, Kumasi, Ghana Mrs. Barbara Perloff MORRISON, R. A., Woodward-Clyde 8t Assoc., 12092 Adrian, Apt. 301 , PETER, R. M., Dames & Moore Consulting Engineers, in the Applied Earth Garden Grove, California Sciences, 1360 Clay, San Francisco, California 94109 MORSE, R. K., US 51 South, El Paso, Illinois 61738 PETRARCA, R.W., 35 Hancock St., Smithtown, N. Y. 11787 MOSLEY, E. T., Raymond Intvnational, Inc., Two Pennsylvania Plaza, Mrs. Carol J. Petrarca New York, N. Y., 10001 PFISTERER, H. A., Yale University, Pfisterer, Tor & Assoc. Cons. Eng., MUÑOZ, E. J., M. M. Sundt Constr. Co., 626 E. 16th St., Tucson, Arisona 424 Chapel St., New Haven Conn., 06511 MUÑOZ, E. J., M. M. Sundt Constr. Co., 626 E. 16th St., Tucson, Arisona , Mrs. Hortense M. Pfisterer 85711 PHILLIPS, R. B„ U.S.D.A., Soil Conservation Service, 3721 Gleumont Dr., Mrs. Estelle Muñoz, Ft. Worth, Texas, 76133 Miss Dolores Muñoz Mrs. Margaret Phillips M íe Cecilia Muñoz PIERCE, F. C., Charles A. Maguire & Associates, Inc., 156 Barney Street, MURATI, E., G.P.O. Box 2948, San Juan , P. R., 00936 Rumford, Rhode Island 02916 MURILLO, J. R., Murillo Engineers, Inc., 5721 Hartsdale Drive, Houston, PIGGOTT, D. E., Mile High Deilmann, Ltd., 6969 Upham Street, Arvada, Texas, 77036 Colorado 80002 MURPHY, V. J., Weston Geophysical Engineers Irrt'l., P. O. Box 306, POMBO, L E., Purdue Univeristy, Room 518, Graduate House, W. Lafayette, Weston, Mass. 02193 Indiana 47906 MURPHY, W. G., Marguette Umvesity, 1515 W. Wisconsin Ave., Milwaukee, POST, J. L., New Mexico State University, Dept, of Civil Engineering, Wisconsin 53233 Las Cruces, New Mexico, 88001 Mrs. Eunice M. Murphy 30 POULOS, S. J., Harvard University, Pierce Hall, Cambridge, Mass.02138, SCOTT, R. F., California Institute of Technology, Divison of Engineering, Mrs. Poulos Pasadena, Calif. 91109 POWERS,K. L , U. S. Bureau of Reclamation, 2220 East 4800 South Apt. Mrs. Pamela June Scott 228, Salt Lake City, Utah, 84118 SEED, H. B., University of California, 232 Trinity Avenue, Berkeley, PRAGER, S. R., Converse, Davis, & Associates, 295 South Oak Knoll Avenue. California Pasadena , California 91106 SELIG, E. T., State University of N w York, 209 Cottonwood Drive, Mrs. Paula A. Prager Buffalo, New York, 14221 PRASZKER, M., Lee & Prasker, 147 Natoma Street, San Francisco, SESSO. D. C., Kansas City Testing Laboratory. 700 Baltimore Avenue. California 94105 Kansas City. Missouri 64105. Jackson QUINONES. H. L , Depto. de Obras Publicas, 259 Mufoz Rivera Faiardo. Mrs. Donald C. Sesso Puerto Rico 00648 SEXSMITH, D. P., James F. MacLaren Limited, 321 Bloor Street East.. RAAMOT, T., Raymond International, Inc., 2 Penn. Plaza New York, Toronto 5. Canada N. Y. 10001 Mrs. Maret Raamot SHANDREW, H.C., Kaiser Engineers,20 Nace Ave.,Piedmont, Calif.. 94611 REDLINGER, J. F ., Dept, of the Army. 4949 Neosho Mission, Kansas SHANNON, W. L„ Shannon fit Wilson, Inc., 16538 Shore Dr. NE.t Seattle 66205 Washington, 98155 REESE, L. C., University of Texas, Dept, of Civil Engineering, 236 Mrs« Shannon Engineering Science Bldg., Austin, Texas 78712 SHEAHAN, J. M., Swindell-Dressier, 441 Smithfield Street, Pittsburgh, REESE, R. J., 1234 E. College Ave., State College, Penna. Pa., 15222 Mrs. Elnnor S. Reese SHERIF, M., University of Washington, 124 More Hall, Seattle, Washington REITZ, H. M., Reitz fit Jens, 6 Ridgeline Dr., Warson Woods, Missouri SHERMAN, W., USAE Waterways Experiment Station, 1829 Edna Dr., 63122 39180 Vicksburg, Miss. Mrs. Reitz SHOCKLEY, W. G„ Corps of Engineers, U. S. Army Waterways Experiment RETI, G. A., Dames & Moore, 445 South Figueroa, Los Angeles, California StBtion, Box 631, Vicksburg, Miss 39180 90017 SILVER, M. L . University of Illinois at Chicago Circle, 2444 Virginia Sl , Mrs, G. A. Reti Apt. 2. Berkeley. California 94709 RICHARDS, A. P., Lehigh University Center tor Marine Studies, Bethiehem, Mrs. Barbara Jean Silver Pa. 18015 SINGH. A.. University of California. Los Angeles, 3173 Engineering 1. Los Angeles, Calif. 90024 Mrs. Richards SNYDER, D. M., D.M. Snyder fit Associates, 269 Central Building, Fort RICHART, F. E. Jr., University of Michifpn, Dept, of Civil Engineering, Wayne, Indiana 46802 Ann Arbor, Michigan 48104 Mrs. David M. Snyder RIEWE, T. A., National Soil Services, Inc., 4087 Shilling Way, Dallas, SOWERS, G. B., 2914 Huntington Rd., Shaker Heights, Ohio 44120 Texas 75237 Mrs. G. Sowers Mrs. Sue Riewe SOWERS, G. F., Georgia Institute of Technology, Dept, of Civil Engineering, ROACH, J. W. Jr., Eustis Engineering Co., 805 Haring Road, Metairie. 3031 Westminster Circle NW, Atlanta, Georgia 30327 Louisiana 70001 Mrs. G. F. Sowers Mrs. Claire Roach ROLLINS. R. L , Brigham Young University. 4051 North 200 East, SPANOVICH, M.. Engineering Mechanics, Inc., 4636 Campbell; Run Road, Provo, Utah 64601 Pittsburgh, Pa 15205 ROLSTON, J., Foundation Engineering Company, 18911 Ringling Street, SQUIER, L. R., Shannon fit Wilson Inc., 1632 S. W. Morrison Street, Tarzana California, 91356 Portland, Oregon 97205 Mrs. Myra Rolston STEVENS, S. F., Charles A. Maguire fit Associates Inc., 337 Farm Lane ROSE, E., Bechtel Corporation, 4550 Seville Avenue, Vernon, California Westwood, Mass. 02090 90058 Mrs. C. Stevens ROSS. A. E., Sprague fit Henwood, Inc., 221 West Olive Street. Scranton, STEVENSON, J. C., USDA-Soil Conservation Service, 2934 SE 145th Ave., Penn. 18501 Portland, Oregon 97236 RUTH, B. E., West Virginia University, 282 Richland Avenue, Morgantown, ST. JOHN, B. J., Law Engineering Testing, Co., 2029 Hickory Road West Virginia, 26505 Birmingham, Alabama 35216 RUTLEDGE, P. C., Mueser, Rutledge, Wentworth fit Johnston, 75 Inwood Mrs. St. John Road, Darien, Conn. 06820 ST0K0E, K. H., University of Michigan, Room 2322 Brown Laboratory, Mrs. Rutledge North Campus, Ann Arbor, Mich. 48104 SAADA, A., Case-Western Resa've University, Cleveland, Ohio 44106 STORCH, H., Storch Engineers 44 Brick Church Plaza, East Orange., Mrs. Nancy Saada New Jersey 07018 SAYRE, R. D., P. O. Box 11102, Richmond, Virginia 23230 Mrs» Carmel Storch Mrs. Sayre M is Francine Storch SCHIFFMAN, R. L , University of Colorado, Computing Center, Boulder, STORCH, L., Storch Engineers, 44 Brick Church Plaza, East Orartge.New Colorado 80302 Jersey 07018 Mrs. Edith Schiffman SULLIVAN, R. A., McClelland Engineers, Inc., 6100 Hillcreft. Houston, SCHMERTMANN, J. H.. University of Florida, Department of Civil Eng., Texas, 77036 University of Florida. Gainesville, tla . 32601 SUNDBERG, D. M., U. S. Department of Agriculture, Soil Conservation, Mrs. Pauline Schmertmann Service 4335 C. Street, Lincoln, Nebraska 68510 SCHMID, W., Princeton University, 151 McCosh Circle, Princeton, N. SWIGER, W. F., Stone & Webster Engr. Corp., 225 Franklin St., Boston, J. 08540 Mas. 02107 SCHMIDT, B„ 804 N. Mathws, Urbana, Illinois, 61801 SCHMIDT, N., University of Missouri, Dept, of Civil Engineering, Rolla, Mrs. Mary.B. Swiger Mo. 65401 SZABO, Z., Pacific Architects and Engineers, 1760 State St. Apt. 25. SCHNABEL, J. J., Schnabel Engineering Associates, 4909 Cordell Ave., So. Pasadena, Calif. 91030 Bethesda, Maryland 20014 SZALAY, K., TAMS, 2621 Palisade Ave.. Apt. 16-D, New York, N. Y., 10463 Mrs. Joan M. Schnabel Mrs. Szalay SCHOUSTRA, J. J., Converse, Davii, fit Associate, 2104 North Craig Avenue, TALBOT, J. R., USDA, Soil Conservation Service, 2902 S. E. 160th Avenue, AKadena, California 91001 Portland, Oregon 97236 Mrs. Hermine E. C. Schoustra SCHUSTER, R. L , University of Idaho, Dept, of Civil Engineering, Moscow, TARSHANSKY, I.W ., Parsons Brirtckerhoff Quade 8t Douglas, 111 John St., Idaho 83843 New York, N. Y. 10038 3I TAYLOR. K. V., Bechtel Corporation, 844 Hillsdale Blvd. (West). San WOODWARD, R. J., Woodward-Clyde & Associates, 420 Montgomery Street, Mateo, California (94403) San Francisco, Calif. 48104 Mrs. Taylor Mrs. Irene C. Woodward THOMPSON, L. J., Texas A & M University, 1216 Haines, College Station., WORTH, E. G., Cornell, Howland, Hayes & Merryfield, 160 Westvn Blvd., Texas 77840 Corvallis, Oregon 97330 Mrs. Eva Thompson WRIGHT, S. G., University of Texas, 2671 Derby St., Apartment 5, THON, J. G., Bechtel Corporation 465 Barbara Way, Hiltoorough, Berkeley, California, 94705 California 94010 YEN, B. C., California State College Long Beach, 17342 Coronado Lane, Mrs. Dawn N. Thon Huntington Beach, California 92647 THORNBURN, T. H., University of Illinois, 2230 Civil Engineering Building, Mrs. Ann M. Yen Urbana, Illinois 61801 YOUD, T. L , U. S. Geological Survey, 345 Middlefield Rd., Menlo Park, Mrs.Thornburn California 94025 TINOCO, F. H., University of Misouri, P. O. Box 893, Rolla, Missouri 65401 ZEFF K., Kal Zeff & Associates. 136 Lipan Street, Denver, Colorado 80223, TRIANDAFILIDIS, G. E., University of N w Mexico, 4611 Glenwood Mrs. Kail Zeff Hills Dr. NE, 87111 Albuquerque, New Mexico ZEGARRA, E„ M. W. Kellogg Co., N. Y., 10 Everett Rd., Demarest Mrs. Triandafilidis N. Y. 07627 TSAI, K. W„ San Jose State College, Dames & Moore, 1727 Woodland Mrs. Lethe N. Zegarra Avenue, Apt. 2, Palo Alto, California 94303 Mrs. Leslie Tsai TSCHEBOTARIOFF, G. P., Associate of King & Gavaris, 26 George Street, Lawrenceville, N. J., 08648 Mrs. Florence Tschetootarioff VENEZUELA TUCKER, R. L , The University of Texas at Arlington, 1918 Westview Terrace, Arlington, Texas 76010 AFANASIEV, K. V., Instituto Agrario Nacional, Av. Montes de Oca No. TURNBULL, W. J., 5 Priarwood Place, Vicksburg, Mississippi 39180 106-82, Valencia Mrs. Mary Lea Turnbull BENAVIDES, R. F., Cementaciones y Pilotes, Avda. Francisco de Miranda, VALLERGA, B. A., Woodward-Clyde & As®c., 2730 Adeline Street, Edif. Roraima, Of. 1-B-Campo Alegre, Caracas Oakland, California 94607 Sra. María del Pilar de Benavides VAN ZELST, T. W., Soiltast, Inc., 2205 Lee Street, Evanston, Illinois 60202 BLANCO P, R. M., Ministerio de Obras Públicas, Centro Residencial la VASILESCU, M. S., Chas. T. Main Inc, of Boston, 24 Charles St., Belmont California, Edificio No. 2, Apt. 144, Caracas Mass 02178 CANAUX, P., SIF Entse, Bachy, Ap. 6721, Caracas VESIC, A. S., Duke University 1722 Duke University Road, Durham, CORDERO, R. A., M.O.P., Dirección de Vialidad, Calle B Urganización North Carolina 27706^ Residencial Boleita, Residencias Diana, Piso 11*Apto. 111, Los Rui- Mrs Milena Sedmak Vesic ces, Caracas VOLPE, R. L , W. A. Wahler & Associates, 1023 Corporation Way, DE FRIES, C. K., Ministerio de Obras Públicas, Ritec, Edif. Miranda of 45 Palo Alto, Calif. 94303 Esq. Padre Sierra, Caracas WAGNER, J. E., U. S. Army Cold Regions, Research & Engineering Lab. ENGLERT K, D„ Universidad Central de Venezuela, El Rosal Calle Carabobo, 6 Bridgman Rd., Hanover, New Hampshire 03755 Res. Carabobo Apto. 1F, Caracas WAHLS, H. E., North Carolina State University, CE Dept., N. C. State ESTRADA M, J., Ministerio de Obras Públicas, MOP, Edificios-Torre Sur, University, P. O. Box 5993, Raleigh, N. C., 27607 Piso 20, Centro Simón Bolívar-Caracas Mrs. Margaret W. Wahls GALAVIS M, L E., Edificio Mengal P, B. Av. La Salle, Los Caobos, WALDRON, H. H„ U. S. Geological Survey & U. S. Atomic Energy Caracas Commission, Engineering Geology Branch, U. S. Geol. Survey, Federal Sra. Olimpia N. de Galavis Center, Denver, Colorado 80225 Srta. Mariela Novel M., Mrs. Waldron GARCIA—ITURBE, L„ Apartado 50.759, Sabana Grande, Caracas WATSON, B. C., Applied GeodatB Systems, In c, 675 Massa. Avenue, Sra. Ma. Mercedes de García Cambridge, Mass. 02139 GONZALEZ H, R„ Sociedad Venezolana de Mecánica de Suelos, Ave. las WEISSMANN, G. F., Bell Telephone Labs. Rm 1A-105 A, Murray Hill., Acacias No. 47 Ota. Lupita, La Florida N. J. 07974 GRATEROL M, J., Ministry of Public Works, Las Mercedes, Ave. Madrid, WHITE, E. E., Spencer, White & Prentis Inc., 10 East 42nd, Street. Edificio Caroni, Apto. 4, Caracas 10016 New York, N. Y. GRISOLIA, A., MOP. Laboratorio, Ave. Libertador, Esq. Sta. Rosa, Mrs. White Caracas WHITMAN, R. V., Massachusetts Institute of Technology, 9 Demar Rd., HIEDRA L, J. C., Estudios Geotócnicos, C. A., Apartado del Este 60417, Lexington, Mass 02173 Caracas Mrs Elizabeth Whitman ISA, R., Ministerio de Obras Publicas, Ota. Sta. Ana, Calle la California, Miss Jill Whitman Urb. Las Mercedes , Caracas WILSON, R., P. O. Box 615, Sebring, Florida 33870 LEON, G., Ota. Nagui Av. Goniótez Rincones, Urb. la Trinidad, Caracas WILSON, S. D., Shannon & Wilson, Inc., 1105 N. 38th Street., Seattle MARTINELLO, I., Apartado de Chacao 61062, Caracas Washington 98103 Sra. Angela B. de Martinello Mrs. Margaret K. Wilson ME LA S, L., Ave. Leonardo Da Vina, Ed. Pigalle Of. 41 Colinas Bello Monte WINTER, E., Schnabel Engineering Associates, 4909 Cordell Ave., Bethesda Caracas Md. 20014 Sra. Ma. Luisa Relia de Mella Mrs. Marianne Winter NIETO, E., Nieto Gil Ingeniería Ca., Av. Libertador Edificio la Linea Of. WINTERKORN, H. F., University of Princeton, E 432 Engg. Quad., 7-B, Caracas Princeton, N. J. 08590 PEÑALOZA C, M., Calle 15 No. 59, Maturín WISSA, A. E. Z., Massachusetts Institute of Technology, Dept, of Civil PEREZ G, G., Ingeniería de Suelos, S. A., Apartado 60316, Caracas Engineering M. I. T., Cambridge, Mass 02139 Sra. Yolanda Pérez Guerra WOLFSKILL, L. A., Massachusetts Institute of Technology, 68 Whits end PEREZ M, J. L., Cía Cimientos y Estructuras (CIMESCA), Altamira, Road Concord, Massachusetts 01742 Tranv. 9a. Entre 2a. y 3a. Av. , Caracas Mrs. Marylin Wolfskin PERNIA P, J. A.. Carrera 7 No., 16-30, San Cristóbal WOODS, R. D., University of Michigan, Room 2330 Fluids Engineving, PESTI, A., U.C.V., I.M.M.E., Apartado 50. 361, Sabana Grande, Caracas Ann Arbor, Mich, 48104 Sra. Klara Pokoly de Pesti 32 PORCARELLI, G. F., Laboratorio de Suelos I.N.O.S., A«Ja. Pantín Chacao, TEPPA A, J. F., Instituto Nacional de Obras Sanitarias, Caite Los Díaz, Caracas Ota. Y iyiya , California Norte, Caracas Stb. Gladys Ostos Porcarelli Sra. Teppa RAMIREZ, L A., Colegio de Ingenieros, Apartado 51097, Caracas, 105 VALERO V, R. D., Sociedad Venezolana de Mecánica de Suelos, RAMIREZ, S., Edificio "EASO" 4o. Piso Of. I., Av. Mi randa .Chacao, Caracas Av. Universitaria Ed. Doria A p to. 3, Chaguaramos, Caracas

R EDEL, C., Parsons, B rindeerhoff, Quade 8l Douglas, Inc., Apartado 6421, VASQUEZ R, G., Av. Uslar Ota. Gisva Vista Alegre, Caracas Caracas YAKOVLIEV V, M., M.O.P., Av. Londres Qta. Marina Urb. la C alifornia, RIVERO M, H., Pilotácnica, Ave. Los Chorros No. 21, Sebucán, Caracas Caracas RODRIGUEZ A, P., Instituto Nacional de Obras Sanitarias, Caracas ROSARIO, R. A., Universidad Central de Venezuela, Mariperez, Av. Norte 23 - 1, Residencias Irene No. 2, Caracas SALAME, L , Ministerio de Obras Públicas, Laboratorio del M . O . P., YUGOSLAVIA/YOUGOSLAVIE Norte 19 No. 15, Santa Rosa. Caracas SALAZAR G. A., Av los Medaños No. 46, Coro. Edo. Falcón ANAGNOSTI, P., Energoprojerkt, Brankova 4, Belgrado SALCEDO R, D., Of.lnpia, "Valle Rodas", Apartado 60.105, Caracas KLEINER, I., "Geoexpert", Dobri Dol. No. 56, Zagreb TAPIA G, M„ Laboratorios de Ingeniería Civil, C. A., La Transversal 21-12 NONVEILLER, E., University of Zagreb, Grskoviéa 28, Zagreb U rb. M onte Cristo, Caracas SOVINC, I., Univers'rty of Ljubljana 11, Lepi pot, Ljubljana

33 PROGRAMME

Friday 22nd August Vendredi 22 Août

9:00-12:00 hours 9 h-12 h 1st meeting of the Executive Committee 1ere Réunion du Comité Directeur de la of the International Society. Auditor^ Société Internationale. Auditorium No. 3. um No. 3, Building "A", Unidad de Con­ Bâtiment "A" de la "Unidad de Congresos". gresos.

14:00-17:00 hours 14 h-17 h 2nd meeting of the Executive Committee. 2eme ¡ju comité Directeur. Audi­ Auditorium No. 3. torium No. 3

Saturday 23rd August Samedi 23 Août

9:00-12:00 hours 9 h-12 h 3rd meeting of the Executive Committee. 3eme Réunion du Comité Directeur. Audi­ Auditorium No. 3. torium No. 3 14:00-17:00 hours 4th meeting of the Executive Committee. 14 h-17 h Auditorium No. 3. 4eme Réunion du Comité Directeur. Audi­ torium No. 3 19:30 hours Dinner for members of the Executive Com 19 h 30 mittee and their vives. — Dîner pour les membres du Comité Directeur et leurs épouses.

Sunday 24th August Dimanche 24 Août

10 :00- 17:0 0 hours 10 h-1 7 h Delivery of documents and tickets to Remise des documents et des billets aux Conference members and registration, at Congressistes. Inscription a l'hôtel Maria Isabel and Del Prado hotels. Maria Isabel et à l'hotel Del Prado.

Monday 25th August Lundi 25 Août

9:00-17:00 hours 9 h-17 h Delivery of documents and tickets and Remise des documents et des billets. In£ registration at the entrance hall, Buil^ cription des Congressistes dans le hall- ding "A", Unidad de Congresos (except du Bâtiment "A" de la "Unidad de Congre­ during Inaugural Session). sos". ( Interruption durant la séance d'ou verture). 10:00-18:00 hours Exhibition of equipment. Ground floor, 10 h- 1 8 h Building "A" (closed during Inaugural Exposition d'équipement. Rez-de-chaussée Session) du Bâtiment "A"

10:30-12:00 hours 10 h 30-12 h Inaugural Session. Auditorium No. 1, Séance d'inauguration du Congrès. Audito Building "A" rium No. 1 du Bâtiment "A"

12:00-14:13 hours 12 h-14 h 15 Welcome reception and buffet. Gardens Réception et buffet dans les jardins de of the Unidad de Congresos la "Unidad de Congresos" 35 14:30-17:30 hours 14 h 30-17 h 30 Main Session No. 1 (Auditorium No. 1): Séance Pléniere No. 1. (Auditorium No. 1): Stress-Deformation and Strenght Charac­ Caractéristiques Contraintes Deformations teristics, Including Time Effects et Résistance, Compte Tenu De L'Influence Du Temps

Chairman: J.G.Zeitlen (Israel) Presidente: J.G.Zeitlen (Israël) General Reporter: Ronald F.Scott (USA) Rapporteur Général: Ronald F.Scott (U.S.a J Associate Reporter: Hon-Yim Ko (U.S.A.) Rapporteur Adjoint: Hon-Yim Ko (U.S.A.) Panel Members: J.Biarez (France) Comité de Discussion: R.E.Gibson (England) J.Biarez (France) T.Kenney (Canada) R.E.Gibson (Grande Bretagne) J.K.Mitchell (U.S.A.) J.Kenney (Canadá) T.Mogami (Japan) J.K.Mitchell (U.S.A.) T.Mogami (Japón) Topics proposed by the General Reporter Sujets proposés par le Rapporteur Géné rai : a) Considerations of continuum mechanics a) Considérations de mécanique des b) Statistical approaches;granular mo­ mileux continus dels b) Approches statistiques; modèles gra­ c) Plasticity, yield surfaces, strenght nulaires d) Rate processes c) Plasticité, surfaces limites; résis e) Testing procedures tance d) Processus de fluage (rate processes) e) Techniques d'essai.

Tuesday 26th August Mardi 26 Août

9:30-12:30 hours 9 h 30-12 h 30 Main Session No.2 (Auditorium No.1): Séance Pléniere No.2. (Auditorium No.1) Foundations of Buildings in Clay Fondations de Structures Sur Argiles

Chairman: N.A.Tsytovich (U.S.S.R.) Président: N.A.Tsytovich (U.R.S.S.) General Reporter: Victor F.B. de Mello Rapporteur Général: Victor F.B.de Mello (Brazil) (Brésil) Panel Members: H.Q.Golder (Canada) Comité de Discussion: A.Kézdi (Hungary) H.Q.Golder (Canadá) D.Mohan (India) A.Kézdi (Hongrie) G.Pérez Guerra(Venezue­ D.Mohan (Inde) la) G.Pérez Guerra (Venezuela) E.Rosenblueth (México) E.Rosenblueth (Mexique)

Topics proposed by the General Reporter: Sujets proposés par le Rapporteur Géné­ ral : a) Ultimate bearing capacities and allow able pressures on 0 clays a) Force portante à la rupture et pre­ b) Settlement computations compared vith ssions admissibles dans les argiles observations and damage records purement cohérentes c) Behavior of piers and piles in clayey b) Comparaisons entre tassements cal­ soils, including individual vs.group culés et observés, désordres provo­ response and execution effects qués, particulièrement dans des ar­ d) Negative skin friction giles préconsolidées ou spéciales e) The process of design¡confidence le­ c) Comportement des pieux et puits en vels in the evaluation of aoil prop­ terrains argileux, différences entre erties and their effect on design de pieux isolés et groupes de pieux et cisions. effets de l'exécution d) Frottement négatif e) Projets. Niveaux de confiabilité dans l'évaluation des propriétés des sols et leur incidence sur l'établissement des projets.

10:00— 18:00 hours 10 h- 1 8 h Exhibition of equipment. Exposition d'Equipement. Rez de Chaussée, Bâtiment "A" 14:30-17:30 hours Specialty Sessions Nos.2,3,7,14,16 and 1 8 14 h 30-17 h 30 Séances Spéciales Nos.2,3,7,14,16 et 18

36 Audito­ Session Title Séance Thème Audito­ rium rium 2 Soil Dynamics (1) A-5 2 Dynamique des Sols (1) A-5 3 Expansive Soils and Moi£ 3 Sols Expansifs et Mouvement ture Movements in Partly de l'humidité dans le Sols Saturated Soils B-7 Partiellement Saturés B-7 7 Structural and Physico- 7 Influence de la Physico- Chemical Effects on the Chimie des Argiles sur leurs Properties of Clays A-4 Propriétés A-4 14 Cast-in-Situ Diaphragm 14 Les Parois Moulées dans le Sol A-3 Walls A-3 16 Nouvelles Méthodes de Labora 16 Nev Laboratory Methods of Investigating Soil toire pour 1 'Analyse du Com­ Behaviour B-9 portement des Sols B-9 18 18 Roads and Runvays (1) A-2 Routes et Pistes d'Aéroport ( D A-2

14:30-17:30 hours 14 h 30-17 h 30 Technical Visits Nos.1,2,3 and 4 Visites techniques Nos.1,2,3 et 4

14:00 hours 14 h Exhibition of technical films. Auditorium Présentation de films techniques: Audi­ No. 1. torium No. 1

Wednesday 27th August Mercredi 27 Août

9:30-12:30 hours 9 h 30-12 h 30 x Main Session No.3. (Auditorium No.1): Séance Pléniere No.3. (Auditorium No.1) Earth and Rockfill Dams Barrages en Terre et en Enrochement

Chairman: A.Mayer (France) Président: A.Mayer (France) General Reporter: Stanley D. Wilson Rapporteur Général: Stanley D. Wilson (U.S.A.) (U.S.A.) Associate Reporter: R.Squier (U.S.A.) Rapporteur Adjoint: R. Squier (U.S.A.) Panel Members: A.Casagrande (U.S.A.) Comité de Discussion: R.J.Marsal (México) A.Casagrande (U.S.A.) A.A.Nitchiporovitch R.J. Marsal (Mexique) (U.S.S.R.) A.Nitchiporovitch (U.R.S.S.) I.L.Pinkerton (Australia) I.L.Pinkerton (Australie) P.Sembenelli (Italy) P.Sembenelli (Italie)

Topics proposed by the General Reporter: Sujets proposés par le Rapporteur Géné ral : — a) Interaction, including load transfer and strain, between component mate­ a) Interactions, y compris les transferts rials of a dam, including the foun­ de charges et deformations.entre les dation matériaux composant un barrage, fon­ b) Stability analyses - criteria, side dations comprises restraint, plane strain, meaning of b) Critères d'analyse de stabilité; dé­ factor of safety formation plane; restriction latérale; c) Performance of dams vith special pro signification du coefficient de sécu blems or of unique design rité d) Treatment of pervious foundations of c) Comportement de barrages présentant great depth des problèmes spéciaux ou de concep­ e) Specifications and control for pro­ tion nouvelle cessing and placement of materials. d) Traitement de fondations perméables a grande profondeur e) Spécifications et contrôle du traite ment et de la mise en place des maté­ riaux.

10:00-18:00 hours 10 h-18 h Exhibition of equipment. Ground Floor, Exposition d'Equipement. Rez de Chaussée, Building "A" Bâtiment "A"

14:30-17:30 hours 14 h 30-17 h 30 Specialty Sessions Nos. 2,4,13,15 and 18 Séances Spéciales Nos. 2,4,13,15 et 18 37 Sess Audito­ Séance Theme Audito­ ion Title rium rium 2 Soil Dynamics(2) A-5 2 Dynamique des Sols(2) A-5 4 Pore Pressure Measure­ 4 Mesure de la Pression In­ ments in the Pield and terstitielle In situ et in the Laboratoy b -7 en Laboratoire b -7

13 Mechanical Properties of 13 Propriétés Mécaniques des Rockfill and Gravel Mate Enrochements et Graviers a -4 rials (1) A-4 15 Anchorages.Especially in 15 Les Ancrages, Notamment en Soft Ground A-3 Terrains Meubles A-3 18 Roads and Runvays(2) A-2 18 Routes et Pistes d'Aéroport (2) A-2

14:30-17:30 hours 14 h 30-17 h 30 Technical Visits Nos.1,2,3 and 4 Visites techniques No.1,2,3 et 4

14:00 hours 14 h Exhibition of technical films. Audito­ Présentation de films techniques. Audi­ rium No. 1. torium No. 1

Thursday 28th August Jeudi 28 Août

9:30-12:30 hours 9 h 30-12 h 30 Main Session No.4 (Auditorium No.1): Séance Pléniere No.4. (Auditorium No. 1) Deep Excavations and Tunneling in Soft Excavations Profondes et Construction de Ground Tunnels en Terrains de Faible Résistance

Chairman: O.Moretto (Argentina) Président: 0 Moretto (Argentine) General Reporter: Ralph B.Peck (U.S.A.) Rapporteur Général: Ralph B.Peck(u.S.A.) Comité de Discussion: J.Alberro (Mexique) Panel Members: J.Alberro (México) M.Endo (Japôn) M.Endo (Japan) J.E.Jennings (Afrique du Sud) J.E.Jennings (South T.Kuesel (U.S.A.) Africa) W.H.Ward (Grande Bretagne) T.Kuesel (U.S.A.) W.H. Ward (England) Sujets proposés par le Rapporteur Géné— ral : Topics proposed by the General Reporter: a) Conditions de stabilité du fond des a) Stability conditions at bottom of deep cuts excavations profondes b) Pressions et déformations calculées b) Measured and calculated pressures et mesurées dans deâ excavations pro­ and deformations associated irith deep fondes en milieux c- cuts in c materials c) Conditions d'emploi de boucliers d'ex cavation pour la construction de tun­ c) Conditions for use of digger-shields in soft-ground tunnelling nels en terrains de faible résistance d) Mouvements observés et calculés autour d) Measured and calculated ground move­ des tunnels en terrains de faible ré­ ments around soft-ground tunnels and sistance et charges transmises aux loads in supports, as influenced by étais; influence des procédés de cons^ construction procedures. truction.

10:00-18:00 hours 10 h-18 h Exhibition of equipment. Ground Ploor, Exposition d 'Equipement. Rez de Chaussée, Building "A" Bâtiment "A"

14:30-17:30 hours 14 h 30-17 h 30 Specialty Sessions Nos.5,6,8,10,12 and Séances Spéciales Nos.5,6,8,10,12 et 13 13

Séance Theme Audito­ Audito­ rium Session Title rium 5 Propriétés Mécaniques 5 Engineering Properties et Physiques du Loess et of Loess aiid oth£r Autres Sols Susceptibles Collapsible Soils B-7 de Rupture Brusque B-7

38 6 Engineering Properties 6 Propriétés Mécaniques et Phy­ of Lateritic Soils(1) A-3 siques des Latérites (1) A-3 8 Negative Skin Friction 8 Frottement Négatif et Tasse­ and Settlements of Piled ment des Fondations sur Pieux A-2 Foundations A-2 10 Engineering Properties 10 Propriétés Mécaniques et Phy­ and Behavior of Clay- siques et Comportement des Shales A-5 Argiles Feuilletées A-5 12 Advances in Consolida 12 Progrès Récents des Theôries tion Theories for sur la Consolidation des Ar­ Clays A-6 giles A-6 13 Mechanical Properties 13 Propriétés Mécaniques des En of Rockfill and Qravel rochements et Graviers (2) A-4 Materials (2) A-4

14«30-17:30 hours 14 h 30-17 h Technical Visits Nos.1,2,3 and 4 Visites techniques Nos.1,2,3 et 4

14:00 hours 14 h Exhibition of technical films. Audito­ Présentation de films techniques. Audi­ rium No. 1 torium No. 1

20:00-22:30 hours 20 h Perforaance of the Ballet Folklórico de Représentation du Ballet Folklórico de México, Palacio de las Bellas Artes. México, "Palacio de las Bellas Artes".

Friday 29th August Vendredi 29 Août

9:30-12:30 hours 9 h 30-12 h 30 Main Session No.5. (Auditorium No.1): Séance Plénière No.5.(Auditorium No.1): Stability of Natural Slopes and Embank­ Stabilité des Talus Naturels et Des Fon ment Foundations dations de Remblais ~

Chairmani D.H.Trollope (Australia) Président: D.H.Trollope (Australie) General Reporter: A.V.Skempton (England) Rapporteur Général: A.V.Skempton Associate Reporter: J.Hutchinson (Grande Bretagne) (England) Rapporteur Adjoint: J.Hutchinson (Grande Bretagne) Panel Members: L.Bjerrum (Norvay) Comité de Discussion: _ H.Borovicka (Austria) L.Bjerrum (Norvege) B.Broms (Sweden) H.Borovicka^(Autriche) R.C.Hirschfeld (U.S.A.) B.Broms (suède) J.Kenney (Canada) J.Kenney (Canadá) Sujets proposés par le Rapporteur Géné­ Topics proposed by the General Reporter ral:

a) Classification of landslides a) Classification des glissements de te b) Time effects in failures of i) cut­ rrain tings ii) natural slopes. b) Effets du temps sur le glissement des c) Mechanics of progressive failure parois d'excavation et de talus d) Instrumentation of slopes. c) Mécanisme de la rupture progressive e ) Observations of creep movements d) Instruments et techniques de mesure f) Engineering significance of solifruc­ appliqués aux talus tion and other periglacial effects e) Observations des mouvements dus au g) Remedial measures fluage f) Importance de la solifluxion et au­ tres phénomènes periglaciaux en gé­ nie civil g) Mesures à prendre pour la solution des problèmes posés.

10:00-18:00 hours 10 h-18 h Exhibition of equipment. Ground Floor, Exposition d'Equipement. Rez de Chaussée Building "A" Bâtiment "A"

14:30-17:30 hours 14 h 30-17 h 30 Specialty Sessions Nos.1,6,9,11 and 17 Séances Spéciales Nos.1,6,9,11 et 17

39 Session Title Audito­ Audito­ rium Séance Thème rium 1 Soil Sampling A-5 1 Prélèvement d'Echanti- llons A-5 Engineering Properties 6 Propriétés Mécaniques of Lateritic Soils(2) A-3 et Physiques des Laté­ rites (2) A-3

9 Safety Factors in Soil 9 Coefficients de Sécurité Mechanics A-4 en Mécanique des Sols A-4 11 Terminology and Def ini^ 11 Terminologie et Défini­ tions in Soil Mechanics A-6 tions en Mécanique des Sols A-6 17 Field Measurements A-2 17 Mesures de Chantier A-2

14:30-17:30 hours 14 h 30-17 h 30 Technical Visits Nos.1,2,3 and 4 Visites techniques Nos.1,2,3 et 4

14:00 hours 14 h Exhibition of technical films. Audito­ Présentation de films techniques. Audi­ rium No. 1 torium No. 1

20:00 hours 20 h Closing Ceremony and Conference Banquet, Cérémonie de Clôture du Congrus et dîner Castillo de Chapultepec. d'adieu. "Castillo de Chapultepec”.

Saturday 30th August Samedi 30 Août

9:30-17:00 hours 9 h 30-17 h Visit to the archeological zone of San Visite de la zone archéologique de San Juan Teotihuac&n and lunch. Juan Teotihuacân et déjeuner sur place

Sunday 31 st August Dimanche 31 Août

9:30-12:30 hours 9 h 30-12 h 30 Technical Visits for vhich sufficient Visites techniques organisées en fonction requests be received des demandes reçues

10 :00- 17:0 0 hours 10 h-17 h Visit to Tepotzotl&n and lunch Visite de Tepotzotlân et déjeuner sur place

Departures for tours outside Mexico City Départ des Voyages organisés hors de México

LADIES PROGRAM PROGRAMME POUR LES DAMES

Monday 25th August Lundi 25 Août

10:30-12:00 hours 10 h 30-17 h Inaugural Session. Auditorium No. 1, Cérémonie d'ouverture du Congrès. Audi­ Building "A", Unidad de Congresos. torium No. 1 Edifice "A" de la Unidad de Congresos.

12:00-14:15 hours 12 h-14 h 15 Welcome reception in the gardens of the Réception dans les jardins de la "Uni­ Unidad de Congresos. Buffet lunch. dad de Congresos". Buffet

Afternoon Free. Après-midi Libre.

Tuesday 26th August Mardi 26 Août

Morning Free Matinée Libre

16:00-18:30 hours 16 h-18 h 30 Tea. Exhibition of regional costumes. Thé. Présentation de costumes typiques. Sal6n de Fiestas, Marla Isabel Hotel. Salón de Fiestas à 1 'Hôtel Maria Isabel

40 Wednesday 27th August Mercredi 27 Août

10 :30- 15:0 0 hours 10 h 30-15 h Group "A", visit to the Museo Nacional Groupe A*. Visite du "Museo Nacional de de Antropología. Lunch Antropología". Déjeuner. 10:00-15:00 hours 10 h- 1 5 h Group "B", visit to various points of Groupe B*. Visite de différents centres interest in the City. Lunch. d'intérêt de la ville

Afternoon Free or Technical Visit No. 3 (See Après-midi Libre, ou Visite Technique No.3 - "Technical Visits"). This visit started (Voir paragraphe: Visites Techniques). at the Unidad de Congresos. Départ de la "Unidad de Congresos".

Thursday 28th August Jeudi 28 Août

11:00-13:00 hours 11 h- 1 3 h Visit to the Bazar Sábado Visite du Bazar del Sábado

Afternoon Free Après-midi Libre

20:00-22:30 hours 20 h-22 h 30 Special performance of the Ballet Folkl6 Représentation spéciale du Ballet Folklô rico de México. Palacio de las Bellas -— rico de México. "Palacio de las Bellas - Artes. Artes".

Friday 29th August Vendredi 29 Août

10:30-15:00 hours 10 h 30-15 h Group B*, visit to the Museo Nacional Groupe B*. Visite du "Museo Nacional de de Antropologla. Lunch. Antropología". Déjeuner

10:00-15:00 hours 10 h-1 5 h Group A*, visit to various points of in Groupe A*. Visite des divers centres terest in the City. Lunch. d'intérêt de la ville

Afternoon Free Après-midi Libre

20:00 hours 20 h Closing Ceremony and Conference Banquet, Séance de Clôture et Dîner d'adieu."Cas­ Castillo de Chapultepec. tillo de Chapultepec".

Saturday 30th August Samedi 30 Août

9:30-13:00 hours 9 h 30-13 h Visit to the archeological zone of San Visite de la zone archéologique de Teo- Juan Teotihuac&n. tihuacân.

13:00-15:00 hours 13 h-1 5 h Lunch in Teotihuac&n Repas à Teotihuacán.

17:0 0 hours 17 h Return of buses to meeting places. Retour aux points de réunion.

Sunday 31 st August Dimanche 31 Août

10 :00-17:0 0 hours 10 h-1 7 h Visit to the Convent of TepotzotlSn (Mu Visite du Couvent de Tepotzotlân.(Museo seo del Virreinato). Lunch. del Virreinato). Déjeuner.

* To facilitate arrangements for two of the * Afin de faciliter le déroulement des visi­ visits, the ladies were divided into two tes, les dames ont été réparties en deux groups; Group "A" formed by those ladies groupesj le groupe "A" comprenant les dames staying at the Del Prado hotel and in logées a l'hôtel Del Prado et dans les envi other hotels close by, and Group "B^ by rons de ce dernier et le groupe "B" toutes those ladies staying at or in the vicinity les dames logées a l'hôtel Maria Isabel et of Marla Isabel hotel. dans ses environs.

4 I MINUTES OF THE EXECUTIVE COMMITTEE MEETINGS PROCES-VERBAL DES REUNIONS DU COMITE EXECUTIF

Membres présents et Pays Représentés Attendance end Countries Represented President/Président L. Bjerrum Past Presidents/Ancien Présidents A. Casagrande A. W. Skerapton

Vice Presidents/vice Présidents Africa/Afrique B. A. Kantey Asia/Asie J. G. Zeitlen Australasia/Australasie D. H. Trollope Europe J. Brinch Hansen (t) ■orth America/Amérique du Nord W. J. Turnbull South Aroerica/Amérique du Sud 0. Moretto

Argentina/Argentine F. L. Torres C. M. Arce Australia/Australie E. H. Davis M. Wood Austria/Autriche H. Borowicka Belgium/Belgique E. de Beer Brazil/Brésil M. Vargas V. de Mello Bulgaria/Bulgarie G. Stefanoff Canada C. B. Crawford S. R. Sinclair China/Chine Colombia/Colombie R. Caj iao T. Shuk Czechos1ovakia/Tchécos1ovaguie Z. Bazant Dennark/Daneraark J. Hessner N. Ovesen Ecuador/Equa teur L. Marin N. M. Sierra A. Finland/Finlande K. V. Helenelund France A. Mayer J. Kérisel Germany/Allemagne H. W. K0ening H. Kuehn Greece/Grèce A.Lolzos E. Sotiropoulos Hungary/Hongrie A. K4zdi India/Inde D. Mohan T. Natarajan Ireland/lrlande Israel/israël G.Wiseman E. Zolkov Italy/ltalie C. Niccolai G. Baldevin Japan/Japon S. Murayama H. Mor i Mexico/Mexique L. Flamand J. Gamboa Morocco/Maroc M.Moussaoui M. Mariotti Netherlands/Paye-Bas H. K. S. Begeman W. H.Loof New Zealand/Nouvelle Zélande P. W. Taylor Norway/Norvèg e N. Janbu B. Kjaernsli Peru/Pérou M. Montero P. G. Húmala A. Poland/Pologne Portugal U. Nascimento Rhodesia/Rhodésie Republic of South Africa/ République de l'Afrique du Sud J. E. Jennings Southeast Asia/Asie du Sud-Est Ching Fung Kee Spain/Espagne V.Escario J. A. Jiménez S< Sweden/Suède R. Lunds trOm B. Broms Switzerland/Suisse J.C. Ott E. Recordon Turquey/Turquie H. Peynircioglu E. Togrol United Kingdom/Royaume-Uni R. E. Gibson L. F. Cooling U. S. A./E. U. A. R. J. Woodward J. Hilf U. S. S. R./U. R. S. S. N. A. Tsytovich L. JUrgensen Venezuela/Vénézuela L. García I. Yugoslavia/Yougoslavie I. Sovinc I. Kleiner

45 In addition the following were invited to at. Ont été invités, en outre, a assister au meet^ tend the meeting as observers: ing, a titre d'observateurs:

The new Vice-Presidents, the Chairman of Les nouveaux Vice-Présidents, les Présidents the official Sub-Committees and the mem­ des Sous-Comités officiels ainsi que les mem bers of the Organizing Committee. bres du Comité Organisateur.

1. The President welcomed each member of the 1. Apres avoir souhaité la bienvenue a chacun Executive Committee. He then asked all pre­ des membres du Comité Exécutif, le Président sent to stand in memory of three outstanding a demandé aux assistants d'observer une minu­ colleagues who had died since we last met, te de silence en mémoire de trois collègues JOrgen Brinch Hansen, up to his death Vice- éminents, décédés depuis la dernière réunion, President for Europe, Nabor Carrillo who had à savoir: Jörgen Brinch Hansen, Vice-Prési­ initiated the Mexico Conference, and Robert dent pour l'Europe jusqu'\ sa mort, Nabor Ca- Peterson of Canada. rrillo qui est \ l'origine du Congres de Me­ xico et Robert Peterson, Canada. The President then explained how he had ap­ pointed Kevin Nash as Secretary to the Socig Le Président a expliqué ensuite comment il ty and expressed the hope that with an impro avait désigné Kevin Nash en tant que Secré­ ved secretariat; the Society would also be taire de la Société et manifesté l'espoir que made stronger. cette nouvelle nomination renforce cette der­ nière. Parmi les innovations effectuées dans Other innovations aimed at doing this were ce but, le Président a cité la réduction du the reductions in the number of conference nombre des communications, l'introduction de papers, the introduction of Specialty Ses­ séances spéciales, enfin la consolidation du sions and a strengthening of the Executive Comité Exécutif lui-meme, ceci grâce a une Committee itself by seeking greater continui­ plus grande continuité en ce qui concerne les ty in membership and by meeting more frequent membres de ce Comité et a des réunions plus i y . fréquentes.

2. The minutes of the last meeting held in 2. Le compte-rendu de la derniere réunion qui Montreal, 7-15 Sept., 1965 were signed as a a eu lieu a Montréal, du 7 au 15 septembre correct record of what took place. 1965 a été approuvé comme fidèle registre des actes de cette réunion. The Secretary stated that he planned to place draft minutes of the current meeting before Le Secrétaire a déclaré qu'il avait l'inten­ the Executive Committee for approval, if tion de présenter les minutes de cette réunion possible tomorrow afternoon, so that these au Comité Exécutif, pour approbation, si pos­ could be signed before the Committee disper­ sible demain après-midi, de façon à ce que sed. It was also planned that each member celles-ci puissent être signées avant que les should receive a copy in Mexico and that ad­ membres du Comité ne se dispersent. Il a ditional copies should be mailed from London également été prévu que chaque membre en re­ to each National Society. This procedure was cevrait un exemplaire a Mexico et que des approved. exemplaires supplémentaires seraient envoyés de Londres a chaque société nationale. Cette procédure a été approuvée. 3. The Secretary announced that the member­ ship of the Society amounted to 8776 on 1st Jan.1968 as shown in Appendix A. This is 1076 3. Le Secrétaire a annoncé que le nombre des more than that reported in Montreal. membres de la Société s'élevait à 8776 au 1er Janvier 1968, comme l'indique L'Appendice A. Since the last meeting two National Societies Ceci signifie une augmentation de 1076 par have been accepted into membership, Greece rapport au chiffre indiqué lors de la réunion and S.E. Asia, which includes members in de Montréal. Malaysia, Thailand, Hong-Kong, Singapore and the Philippines. Depuis la derniere réunion, deux Sociétés Na­ tionales ont été admises comme membres; il s'agit de la Grece et de l'Asie du Sud-Est qui groupe des membres de Malaisie, Thaïlande, 4. The statement of income and expenditure Hong-Kong, Singapour et des Philippines. for the years 1965-1969 given in Appendix B was approved. Concern was expressed at the high cost of the list of Members and the 4. L'exposé des entrées et des dépenses pour

46 Secretary agreed to see if he could find a les années 1965-1966, indiquées dans l'Appen way of saving money on this item possibly by dice B, a été approuvé. Comme il était ques. having it reproduced other than in England. tion du prix élevé de la Liste des Membres, le Secrétaire a déclaré qu'il allait essayer The Secretary stated that if all National de trouver un moyen plus économique ï ce su­ Societies paid their dues promptly each year jet, probablement en faisant reproduire cette he anticipated that the current subscription liste dans un autre pays que l'Angleterre. rate would be adequate until 1971, and it was agreed that this should remain at the present Le Secrétaire a déclaré que si toutes les So­ figure, $25 per National Society plus 75c per ciétés Nationales payaient leurs droits de member. souscription rapidement chaque année, le prix actuel de la souscription resterait le même jusqu'en 1971. Le tarif actuel de $25 par 5. In accordance with the procedure stated in Société Nationale et de 75 c par membre se­ the Statutes amended in Montreal, th% follow­ rait donc conservé. ing were nominated as Vice Presidents for the period 1969-1973 5. Conformément a la procédure établie dans les Statuts modifiés ï Montréal, les person­ AFRICA Mr.M.P.dos Santos (Portugal) nes suivantes ont été nommées Vice-Présidents ASIA Dr. T. Mogarai (Japan) pour la période 1969-1973. AUSTRALASIA Prof. E.H. Davis (Australia) EUROPE Prof. E. de Beer (Belgium) AFRIQUE M. M.P. dos Santos (Portugal) N.AMERICA Dr. D.H. MacDonald (Canada) ASIE Dr. T. Mogami (Japon) S.AMERICA Dr. G.Perez G. (Venezuela) AUSTRALASIEProf. E. H. Davis (Australie) EUROPE Prof. E. H. de Beer (Belgique) These were formally elected with acclamation. AMERIQUE DU It was pointed out that if the new Consti­ NORD Dr. D. H. MacDonald (Canada) tution and By-Laws are accepted, a Vice- Presi AMERIQUE DU dent would have to belong truly to the region SUD Dr. G. Perez G. (Venezuela) he represented, and that this would apply from 1973. L'élection de ces derniers a été chaleureuse­ ment applaudie. Il a été souligné que si la nouvelle Constitution et les statuts sont ap­ 6. The President announced that after consul prouvés, chaque Vice-Président devra apparte­ tation with the PaBt Presidents he had in­ nir ^ la région qu'il représente. Cette vited Prof. Ralph Peck to be the President mesure sera alors mise en vigueur à partir de for the period 1969-1973, and that Prof. Peck 1973. had consented. This was also greeted with acclamation. 6. Le Président a annoncé qu'après avoir con­ sulté a ce sujet les Présidents antérieurs, il avait décidé de proposer & M. le Prof. 7. The President outlined the duties of the Ralph Peck le poste de Président pour la pé­ new post of Secretary General and recom­ riode de 1969-1973. Le Prof. Peck a donné mended that Kevin Nash should be invited to son consentement. Cette initiative a égale­ serve in this capacity for the period 1969- ment été applaudie. 1973. He pointed out that am annual honorari. um of U.S. $ 4,000 had been paid to Prof. 7. Apres avoir insisté sur les devoirs et obli Nash for the services already rendered and gâtions qu'implique le nouveau poste de Secr£ it was agreed that this should be continued taire Général, le Président a proposé que M. and be paid out of the Society's funds. Kevin Nash soit invité à occuper celui-ci pour la période 1969-1973. Il a également indiqué que le montant annuel de 4.000 $ U.S. avait 8. The new Constitution and By-Laws which été versé au Prof. Nash pour les services qu' had previously been circulated to National il avait déjà prêtés. Il a été décidé que Societies were discussed at length, and after ces honoraires continueraient à être versés some amendment the versions shown in Appendix au Prof. Nash et seraient payés sur les fonds C were approved. de la Société.

8. La nouvelle constitution et les nouveaux 9. A lengthy discussion took place as to statuts dont le texte a été remis au préala­ whether English alone should be the official ble aux Sociétés Nationales ont été discutés language of the Society or whether it should en détail. Aprfes diverses modifications, les remain as at present with English and French. versions indiquées dans 1‘Appendice C ont été Apart from the French speaking countries approuvées.

47 many spoke in favour of retaining French and 9. Une longue discussion a eu lieu au sujet it was evident that this was the general wish de la langue officielle de la Société. L'an­ of the Society. No vote was taken. glais doit-il être la Beule langue officielle, ou doit-on conserver l'anglais et le français? Outre ceux de langue française, de nombreux 10. Proposals from the Indian National Socie pays se sont manifestés en faveur du maintien ty that the International Society should du français. Ceci a paru etre le voeu géné­ increase its activities by ral de la Société. Aucun vote n'a eu lieu.

(i) preparing and issuing reviews of 10.- La Société Nationale de l'Inde a proposé research in progress que la Société Internationale augmente ses activités en: (ii) publishing an International Journal (i) préparant et publiant des revues d'in (iii) fostering the exchange of research v^ptigation programmes, etc. (ii) publiant un Journal International were not accepted, but Prof. D. Mohan (India) and Mr. E. Zolkov (Israel) were asked to make (iii) stimulant l'échange de programmes de more specific proposals on these lines for recherche, etc... consideration at the next Executive Com­ Ces propositions n'ont pas été acceptées mais mittee with cost estimates included. The Secre^ le Prof. D. Mohan (Inde) et M. E. Zolkov (Is. tary General agreed to give what help he raël) ont été priés de préciser leurs idées could in formulating costs. à ce sujet afin que leurs projets puissent etre présentés lors de la prochaine réuniona- du Comité Exécutif, prix inclus. Le Secré­ 11. The President suggested that one method taire Général a accepté de preter son aide ne of achieving some of the aims of the Indian en ce qui concerne l'établissement des prix. proposal would be to ask existing soil me­ chanics journals to make available a small 11. Le Président a suggéré que l'un des moyens amount of space for International Society de réaliser certains des objectifs proposés news. This was accepted and each National par L'Inde, consisterait "a demander aux revues Society was asked to notify the Secretary spécialisées dans le domaine de la Mécanique General of des Sols de réserver un espace pour les nou­ velles de la Société Internationale. Cette (a) the names of soil mechanics journals initiative a été acceptée de sorte que chaque in their countries willing to accept Société Nationale a été priée de communiquer the suggestion, and au Secrétaire Général: (b) the names and addresses to which the (a) les noms des revues spécialisées en mé­ news items should be sent. canique des sols, qui seraient désireuses d'accepter cette suggestion. 12. The proposal from the Joint Australasian (b) le nom et l'adresse des personnes aux­ group for an International Research Centre quelles les documents devraient “être en­ to be run under the auspices of the Society voyés. was withdrawn from the agenda. 12. Proposition faite par le groupe d'Austra- lasie en faveur de l'établissement d'un centre 13. Prof. Zeitlen, Vice President for Asia, international de Recherche qui serait placé reported verbally on the activities during sous les auspices de la Société. Cette posi­ the last four years of the various confer­ tion a été retirée de l'agenda. ences and symposia held in India, Israel and Japan and a list of these is given in Appendix 13. Le Prof. Zeitlen, Vice-Président pour 1' D. Asie a fait ensuite un rapport verbal concer­ nant les activités des différentes Sociétés Nationales de sa zone, durant les quatre der­ 14. Prof. Trollope, Vice President for Austra nières années. Différents symposiums dont la lasia, reported on the activities in Australia liste figure dans l'appendice D ae sont dé­ and New Zealand and pointed out how even a roulés en Inde, en Israël et au Japon. plight increase in annual subscription was inmediately reflected in a temporary decline 14. Le Prof. Trollope, Vice-Président pour 1' in membership. A list of conferences and sym- Australasie a fait un rapport concernant les

48 poaia in this region is given in Appendix E. activités en Australie, et Nouvelle-Zélande. Il a déclaré qu'une augmentation, aussi légère The meeting adjourned at this point until soit-elle, du montant de la souscription an­ 23rd August. nuelle entrainait immédiatement une réduction du nombre des membres. La liste des symposi­ ums qui ont eu lieu dans cette région est four 15. Mr. Kantey, Vice President for Africa nie dans 1'Appendice E. reported on the activities within his zone and particulary of the major conference in 15. Le Prof. Kantey, Vice-Président pour 1' Cape Town referred to in Appendix F. Supple­ Afrique a fait un rapport sur ses activités mentary information was given by M. Moussaoui dans sa zone et particulièrement sur la con­ on the activities of the Morocco National férence du Cap mentionnée dans 1'Appendice F. Society where useful field meetings have been M. Maoussaoui a fourni des renseignements com held in cooperation with engineering geolo - plémentaires en ce qui concerne les activités gists. de la Société Nationale marocaine, qui a tenu des réunion très utiles en collaboration avec des géologues ingénieurs. 16. Dr. Turnbull, Vice President for North America gave an account of the activities 16. Le Dr. Turnbull, Vice-Président pour 1* within the region, culminating with the Mexico Amérique du Nord a fait un rapport sur les aç conference itself. A summary of some of the tivités de sa région jusqu'à la conférence de more important other happenings is given in Mexico. Un compte-rendu des plus importants Appendix G. événements de cette zone est donné dans 1'Ap­ pendice G.

17. Dr.Moretto, Vice-President for South Ame­ 17. Le Dr. Moretto, Vice-Président pour 1' rica, reported on the activity in this zone Amérique du Sud, a fait un rapport sur sa zone. as summarized in Appendix H. A drive has been Voir Appendice H. Des efforts ont été réali­ made to recruit new member countries in Cen­ sés afin de recruter de nouveaux membres parmi tral America and it is hoped that results will les pays d'Amérique Centrale et l'on espère soon be evident. que les résultats se manifesteront bientôt.

18. Etant donné le décès du Dr. Brinch Hansen, 18. Prof. de Beer gave the Vice President's décès qui a porté un grand coup à la région, report for Europe owing to the untimely death le Prof, de Beer a fourni le rapport du Vice- of Dr. Brinch Hansen which has been a great Président pour l'Europe. blow to the Region. The many activities of the various National Societies are summarized in Les activités des nombreuses Sociétés Natio­ Appendix I. nales de cette région sont résumées dans 1' Appendice I.

19. These Vice-Presidential reports are a new 19. Ces rapports des Vice-Présidents apportent feature of our Executive Committee meetings un élément nouveau dans les réunions de notre and it was evident that they are of great va Comité Exécutif. Il est évident que ces rag lue in giving a wide perspective of the Soci^ ports sont extrêmement utiles étant donné qu' ty's activities throughout the world. II was ils fournissent un vaste panorama des activi­ agreed that they should be a regular feature tés des Sociétés à travers le monde. Il a été of Executive Committee meetings in future and convenu que cette mesure serait poursuivie ré the Vice-Presidents were warmly thanked for gulièrement au cours des prochaines réunions them, and for the work they have done in the du Comité Exécutif. Les Vice-Présidents ont last four years. été chaleureusement remerciés pour cette ini- titiative ainsi que pour le travail qu'ils ont réalisé au cours des quatre dernières années. 20. In order to avoid undesirable duplication from lack of consultation National Societies 20. Afin d'éviter que le manque d'information are asked to keep the Secretary General in­ n'entraine des répétitions non souhaitables, formed of their future plans with regard to les Sociétés Nationales sont désormais prié­ conferences and symposia in their own es de mettre le Secrétaire Général au courant countries. Vice Presidents are asked to do de leurs projets en ce qui concerne les con­ the same with regard to Regional Conferences férences et les symposiums devant avoir lieu to be arranged within their zone. dans leurs propres pays. Les Vice-Présidents sont également priés d'agir de metne en ce qui concerne les Conférences Régionales devant 21. The presence of Prof. R. Peck in the se dérouler dans leur zone.

49 meetings was noted with acclamation. 21. La présence du Prof. R. Peck a la séance a été applaudie.

22. The Indian Delegate (Prof.Mohan) queried 22. Le délégué de l'Inde, (M. le Prof. Mohan) whether a rainimun number of members should a demandé si les statuts stipulaient un nom be specified in the By-Laws as being required bre minimum de membres, comme condition a in a National Society before it was accepta­ remplir pour qu'une Société soit acceptée corn ble for membership of the International Socie me membre de la Société Internationale. Il ty. It was agreed that no number should be a été convenu qu'aucun chiffre ne serait laid down. exigé.

23. Le Secrétaire Général a prié chaque Socié. 23. The Secretary General requested each té Nationale de lui expédier a Londres un ex National Society to send to him in London a emplaire (en anglais ou en Français) de ses copy (in English or French) of their own propres statuts. statutes. 24. Le rapport du Comité consultatif a été présenté par le Président. Voir Appendice J. 24. The report of the Advisory Committee was La procédure adoptée pour la Conférence de presented by the President and is given as Mexico a été discutée en détail et générale­ Appendix J. ment approuvée.

The arrangements adopted for the Mexico Confer^ 25. Le Comité Exécutif a approuvé l'établis­ ence were discussed in detail and were given sement d'un nouveau sous-comité dont les funç. general approval. tions seraient les suivantes: (i) suivre le Congrus de Mexico; ses réu­ nions, ses exposés et son organisation 25. The Executive Committee approved the setting up of a new sub-committee with the (ii) évaluer la qualité de ce dernier en ce following terms of reference: qui concerne les séances pléniïres, les séances spéciales et leurs activi­ (i) to follow the Mexico Conference, tés; présenter un rapport 3 ce sujet its meetings, papers and arragements au Comité Exécutif

(ii) to evaluate the 'quality' of the (iii) rapport susceptible de servir de base conference, its main sessions, pour l'élaboration de directives géné­ specialty sessions and their activi. rales en vue de prochaines conférences. ties, and to present the result in Ces directives devront être soumises, a report to the Executive Committee pour approbation, au Comité Exécutif et and pourront être éventuellement comprises dans les Statuts. (iii) based on their findings to draw up proposals for guidelines for the Les personnes désignées comme membres de ce coming conference which can be pre^ Sous-comité de Conférence sont les suivantes: sented to the Executive Committee to be accepted and eventually in­ Dr. D.H. MacDonald (Canada), Président cluded in the By-Laws. Prof. E.H. Davis (Australie) M. B. Kjaernsli (Norvège) The following were appointed as members of the Conference Procedure Committee: Avec le Secretiare Général

Dr. D.H. MacDonald (Canada), Chairman Professor E. H. Davis (Australia) 26. Le Président a récapitulé l'histoire des Mr. B. Kjaernsli (Norway) activités du Sous-comité en ce qui concerne with the Secretary General le Classement des documents et l'établissement des Résumés Internationaux; activités qui ont abouti à la publication par la Société Inter­ 26. The President outlined the history of the nationale du nouveau Précis Géotechnique, sub-committee on Literature Classification oeuvre du Dr. Koening, de M. Kuehn et de la and International Abstracts Service, leading Société Nationale Allemande. up to the spectacular achievement of Dr. Le rapport du Sous-comité a été présenté par Koenig and Mr. Kuehn and the German National le Dr. T.C» Kenney lequel a été cordialement Society in producing their new Geotechnical remercié pour son travail. Le compte-rendu Abstracts on behalf of the International Socie. de ce rapport figure dans l'appendice K. Les 50 The report of the sub*committee is given in efforts déployés pendant de nombreuses années Appendix K and was presented by Dr. T.C.Kenney par le Prof. Casagrande ont fait l'objet d ’un who was warmly thanked for their work. Pro­ éloge spécial. fessor Casagrande was particularly mentioned Le Dr. Koening a fait allusion au prix de la for his efforts over many years. Dr. Koenig publication des résumés et déclaré que cette referred to the cost of producing the ab­ publication ne pouvait être rentable que si stracts and states that it would become eco­ le nombre des adhérents atteignait le chiffre nomical only when the number of subscribers de 2,000. En attendant, le déficit a été corn reached 2,000. In the meantime, for three blé pendant trois ans seulement par un don years only, the deficit was being met by a généreux de la Fondation Volkswagen. generous grant from the Volkswagen Founda­ Le Dr. Koenig a décrit en détail le système tion. Dr. Kuéhn described the details of de 1'élaboration des résumés. the abstract system. The initiative in pro La publication de ces résumés a été chaleureu ducing these abstracts was warmly applauded sement applaudie et le Comité Exécutif a de­ and the Executive Committee agreed that thay mandé que l'action de la Société soit solide­ should be given the Society's full backing. ment appuyée dans ce sens. Il a été décidé que ce sous-comité serait re­ constitué en tant que Comité du Résumé, avec les menfores suivants: National Societies and Vice-Presidents are asked in particular to give wide publicity to them. Dr. T.C. Kenney (Canada), Président M. J. Florentin (France) It was agreed that this sub-committee should M. N. Flodin (Suède) be reconstituted as an Abstract Liaison Com­ Prof. I. Sovinc Yougoslavie) mittee, with the following membership: et ex officio: Dr. T.C. Kenney (Canada), Chairman Mr. J. Florentin (France) M. H. Kuehn (Allemagne) Prof. H. Petermann (Allemagne) Mr. N. Flodin (Sweden) et le répresentant de A.S.C.E. Prof. I. Sovinc (Yugoslavia) 27. Le rapport du Comité des Définitions, des and ex officio: Symboles, et de la Terminologie a été présen­ te par le Prof. Kerisel. Ce rapport fait 1' Mr. H. Kuehn (Germany) objet de l'Appendice L. Les discussions ul­ Prof. H. Petermann (Germany) térieures à ce sujet auront lieu au cours d' and a representative of A.S.C.E. une des séances spéciales. Le Comité a été remercié pour son travail. Le nouveau comité a été prié d'inclure dans son 27. The interim report of the Committee on rapport final une liste de recommandations. On Definitions, Symbols and Terminology is atta­ espère que ce rapport final sera prêt pour la ched as Appendix L and was presented by Prof. prochaine conférence qui comprendra les mem­ Kerisel. Further discussion on this subject bres suivants: is to take place at one of the current Special, ty Sessions. Dr. H. Golder (Canada) Président Dr. G. Ter-Stepanian (U.R.S.S.) The Committee was thanked for their work and Prof. S.B. Stearns (E.U.A.) a new committee was asked to include recom­ Prof. E. Schultze (Allemagne) mended units as part of their final report M. N.E. Sandegren (Suède) which it was hoped would be available for the Dr. L. JUçgensen (U.R.S.S.) next Conference with the following membershipi Prof. A.W. Bishop (Royaume-Uni) Prof. C. Shaerrer (Suisse)

Dr. H. Golder (Canada), Chairman 28. Le Dr. Aitchison dont le rapport fait 1' Dr. G. Ter-Stepanian (USSR) objet de l'Apprendice M a parlé du travail du Prof. S. B. Stearns (USA) Sous-Comité en ce qui concerne 1‘échantillon­ Prof. E. Shultze (Germany) nage des sols. Le Comité a été remercié pour Mr. E. Sandegren (Sweden) son travail. Une séance spéciale sur ce sujet Dr. L. JUrgensen (USSR) aura lieu lors de la prochaine conférence. Prof. A. W. Bishop (UK) Le Comité devra donc continuer son travail Mr. C. Shaerrer (Switzerland) jusqu'a la prochaine conférence qui compren­ dra les membres suivants:

28. Dr. Aitchison spoke on the work of the Dr. G.D. Aitchison (Australie) Président 51 sub-committee on Soil Sampling, whose interim Dr. V. Broms (Su&de) report is attached as Appendix M. M H. Mori (Japon) Prof. J. 0. Osterberg (E.U.A.) The Committee was thanked for their Vork. It Dr. M.J. Hvorslev (E.U.A.) conseiller was noted that there will be a Specialy Ses­ spécial sion on this topic at the forthcoming confer­ M. M. Wood (Australie) Secrétaire ence and the Committee was asked to continue their work until the next conference with the 29. Le Prof. Tsytovich (U.R.S.S.) a invité following membership: officiellement le Comité Exécutif a la Con­ férence Internationale qui doit avoir lieu a Dr. G. D. Aitchison (Australia), Chairman Moscou en 1973; M. Lundstrom (Suede) a for­ Dr. B. Broms (Sweden) mulé une invitation similaire pour le Congrès Mr. H. Mori (Japan) qui doit avoir lieu S Stockholm: L'invita­ Prof. J. 0. Osterberg (USA) tion formulée par l’Inde a été retirée par Dr. M.J. Hvorslev (USA), Special Adviser le Prof. Mohan. with Mr. M. Wood (Australia), Secretary Apres une vote secret, il a été décidé par 25 voix contre 19 que l'invitation de l'URSS serait acceptée. On a remercié également les 29. Prof. Tsytovich (USSR) gave a formal invi autres pays qui avaient formulé des invita­ tation to the Executive Committee for the tions . 1973 International Conference to be held in Moscow; and Mr. Lundstrom (Sweden) gave a simi 30. Il a été convenu qu'une réunion du Comi­ lar invitation for it to be held in Stockholm. té Exécutif devrait avoir lieu avant la pro­ The invitation which had been received from chaine Conférence. Un vote a été réalisé en India was withdrawn by Prof. Mohan. ce qui concerne les invitations suivantes : After a secret ballot it was decided by 25- Australie (Melbourne) (13) 19 that the invitation from USSR should be Asie du Sud-Est (Bangkok) ( 10) gratefully accepted and all the countries Hongrie (Budapest) ( 12) which had issued invitations were thanked for E. U. A. (Puerto Rico) ( 8) them. Les voix recueillies sont indiquées entre parenthèses. La réunion du Comité Exécutif 30. It was agreed that a meeting of the Ex­ aura donc lieu en Australie. De nouveau cha­ ecutive Committee should be held before the que Société Nationale a été remerciée pour next Conference and the following invitations son invitation. were voted upon without introduction or dis­ cussion: 31. Il a été convenu que nous devrions con­ tinuer notre souscription a la U.A.T.I. On Australia (Melbourne) (13) a remercié’ M. Mayer de nous avoir représen­ S.E. Asia (Bangkok) ( 10) té à Paris au cours d'un grand nombre de Hungary (Budapest) ( 12) réunions. U.S.A. (Puerto Rico) ( 0 ) 32. Le président a fait un bref rapport con­ cernant les réunions tenues avec le Président The votes recorded are given in parenthesis de la Société Internationale de Mécanique des above and the next Executive Committee will Roches, réunions au cours desquelles il a therefore be held in Australia. Again each été question de la coopération entre nos National Society was thanked for its invi­ deux institutions. Cette coopération sera tation. poursuivi« dans l'avenir.

33. La séance a été levée a I7h. 31. It was agreed that we should continue our U.A.T.I. subscription and Mr. Mayer was thanked for having represented us at many of their L. Bjerrum meetings in Paris. Président

Mexico, 23 Aotìt, 1969. 32. The President briefly reported on meetings with the President of the International Socie­ ty of Rock Mechanics where cooperation be­ tween our two societies was discussed. Such cooperation also continues with other bodies.

52 33. The meeting was closed at 17:45.

Signed in and on behalf of the Committee

L. Bjerrum, President

Mexico City, 23 August, 1969

APPENDIX A APPENDICE A

North South Àustra Europe Asia Africa America America la si a TOTAL Amerique Amerique Austra­ Asie Afrique du Nord du Sud lasia

Argentina/Argentine _ - _ 66 _ 66 Australia/Australie - - --- 323 323 Austri a/Autri che 31 - - --- 31 Belgium/Belgique 61 -- - - - 61 Brazil/Brésil --— - 107 - 107 Bulgaria/Bulgarie 92 ----- 92 Canada — _ 465 -_ 465 China/Chine - 100 - - - - 100 Colombia/Colombie ---- 12 - 12 Czechoslovakia/TchécoBlovaquie 37 ----- 37 Denmark/Danemark 56 - - --- 56 Ecuador ---- 36 - 36 Finland/Finlande 79 - -- - 79 France 202 - ---- 202 Germany/Allemagne 778 -- - -- 778 Greece/Grèce 37 ----- 37 Hungary/Hongri e 23 --- -- 23 India/Inde - 848 - --- 848 Ireland/Irlande 7 - - -- - 7 Ierael/l sraël - 95 - --- 95 ¡Dtaly/Italie 341 ----- 341 Japan/Japon - 168 --- - 160 Mexi co/taexi que --- 143 - - 143 Morocco/lllaroc -- 96 --- 96 Netherlands/Pays-Bas 70 ----- 70 New Zealand/Nouvelle Zélande -- -- - 127 127 Norway/Norvège 150 ----- 150 Peru/Pérou - -- - 45 - 45 Poland/Pologne 24 - - --- 24 Portugal/Portugal 150 ----- 150 RhodeBia/Rhodésie -- 147 --- 147 South Africa/Afrique du Sud -- 368 -- - 368 South-East Asia/Asie du Sud-Est - 196 -- - - 196 Spain/Espagne 414 - -- - - 414 Sweden/Suède 203 - - --- 203 Swi tzerland/Sui sse 770 - - - - - 770 Turkey/Turquie 42 --- -- 42 United Kingdom/Royaume-Uni 714 --- -- 714 U.S.A./E.U.A. - -- 820 -_ 820 U.S.S.R./U.R.S.S. 159 --- - - 159 Venezuela/Vénézuela - --- 120 - 120 Yugoslavia/Yougoslavie 54 - — —— 54

Countries: 23 5 3 3 6 2 42

Members: 4,494 1,407 611 1,428 386 450 8,776

53 33. The meeting was closed at 17:45.

Signed in and on behalf of the Committee

L. Bjerrum, President

Mexico City, 23 August, 1969

APPENDIX A APPENDICE A

North South Àustra Europe Asia Africa America America la si a TOTAL Amerique Amerique Austra­ Asie Afrique du Nord du Sud lasia

Argentina/Argentine _ - _ 66 _ 66 Australia/Australie - - --- 323 323 Austri a/Autri che 31 - - --- 31 Belgium/Belgique 61 -- - - - 61 Brazil/Brésil --— - 107 - 107 Bulgaria/Bulgarie 92 ----- 92 Canada — _ 465 -_ 465 China/Chine - 100 - - - - 100 Colombia/Colombie ---- 12 - 12 Czechoslovakia/Tchécoslovaquie 37 ----- 37 Denmark/Danemark 56 - - --- 56 Ecuador ---- 36 - 36 Finland/Finlande 79 - -- - 79 France 202 - ---- 202 Germany/Allemagne 778 -- - -- 778 Greece/Grèce 37 ----- 37 Hungary/Hongrie 23 --- -- 23 India/Inde - 848 - --- 848 Ireland/Irlande 7 - - -- - 7 Ierael/l sraël - 95 - --- 95 ¡Dtaly/Italie 341 ----- 341 Japan/Japon - 168 --- - 160 Mexi co/taexi que --- 143 - - 143 Morocco/lllaroc -- 96 --- 96 Netherlands/Pays-Bae 70 ----- 70 New Zealand/Nouvelle Zélande -- -- - 127 127 Norway/Norvège 150 ----- 150 Peru/Pérou - -- - 45 - 45 Poland/Pologne 24 - - --- 24 Portugal/Portugal 150 ----- 150 RhodeBia/Rhodéeie -- 147 --- 147 South Africa/Afrique du Sud -- 368 -- - 368 South-East Asia/Asie du Sud-Est - 196 -- - - 196 Spain/Espagne 414 - -- - - 414 Sweden/Suède 203 - - --- 203 Swi tzerland/Sui sse 770 - - - - - 770 Turkey/Turquie 42 --- -- 42 United Kingdom/Royaume-Uni 714 --- -- 714 U.S.A./E.U.A. - -- 820 -_ 820 U.S.S.R./U.R.S.S. 159 --- - - 159 Venezuela/Vénézuela - --- 120 - 120 Yugoelavia/Yougoslavie 54 - — —— 54

Countries: 23 5 3 3 6 2 42

Members: 4,494 1,407 611 1,428 386 450 8,776

53 Appendix B Appendice B

Income and Expenditure / Recettes et Dépenses 1966 - 1969

YEARS ENDED FEBRUARY 28th: PERIOD 28 FEBRUARY 19» TO JULY 1969 EXERCICE AU 28 FEVRIER PERIODE 28. 2. 68 A JUILLET 1969

1966 1967 1968 1969 £ £ £ £ £

RECEIPTS/RECUS:

Balance in hand/Bilan 1456 396 232 2317 3887 S

£ 2327 1115 2867 4075 5815

£ £ £ £ £

PAYMENTS/PAIEMENT:

Lilt of Members/Liste des Membres 1600 317 424 - 4725 U.A.T.I. Subscriptions/U.A.T.1. Souscriptions 43 43 57 67 - Postages end Sundries/Frais d'envoi et divers 1 144 69 121 23 Congress and Travelling Expenses/ Frail: CongrAs et Voyage 287 379 -- 663

£ 1931 883 550 188 5411

Balance forward/Sotde £ 396 232 2317 3887 £ 504

54 APPENDIX C (i) CONSTITUTION*

APPENDICE C (i) STATUTS*

* This Constitution should be read in conjunction with the accompanying By-Laws.

* Ce texte devrait être lu en même temps que le règlement intérieur ci-joint.

NAME LE NOM

1. The name of the Society is: International 1. Le nom de la Société est: International Society for Soil Mechanics and Foundation Society for Soil Mechanics anJ Founda­ Engineering; in French: Société Inter­ tion Engineering - an français: Société nationale de Mécanique des Sols et des Internationale de Mécanique des S0I3 et Travaux de Fondations. des Travaux de Fondations.

AIM LE BUT

2. The aim of the Society is the promotion 2. Le Ijut de la Société est de promouvoir of international cooperation among engi-i- une coopération internationale parmi neers and scientist for the advancement les Ingénieurs et les Chdrceurs pour of knowledge in the field of soil mecha­ faire progresser les connaissances dans nics and ita practical applications, and le domaine de la mécanique des sols et in the civil engineering applications of de ses applications pratiques et dans geology, and of rock, snow and ice celui des applications au Génie Civil mechanics. de la géologie et de la mécanique des roches; de la neige et de la glace.

3. The Society will accomplish its aim 3. La Société atteindra son objet:

a) by holding international conferences a. en tenant des conférences interna­ at approximately four-year intervals; tionales, environ tous les quatre b) by holding Executive Committee meetings ans-, at the time of the international con­ b. en tenant des réunions exécutives, ferences and, if required, at a suit­ environ tous les deux ans; able time between conferences; c. en provoquant des conférences régio c) by promoting regional conferences and nales et d’autres réunions sans - other meetings at intervals; périodicité définie; d) by cooperation with other organiza­ d. en coopérant avec d ’autres organisa tions, national and international, tions, nationales ou internationa­ whose aims are complementary to those les, dont l?s buts sont complémen­ of the Society; taires de ceux de la Société; e) by interchange of information among e. en diffusant des informations parmi its National Societies, including ses Sociétés nationales, y compris publication of lists of members and la publication des listes de mem­ other documents; bres ou d ’autres documents; f) by promoting the publication of lite­ f. en favorisant la publication d’ex­ rature abstracts. traits de publications.

LANGUAGES LANGUES

4. The official languages of the Society are 4. Les langues officielles de la Société Enrlish and French. sont l ’anglais et le français. i'Sr, B2R5HIP PARTICIPATIONS

5. The International Society is composed of 5. La Société internationale est composée National Societies elected into member­ de Sociétés nationales admises cora.ne ship by the Executive Committee. To membres par le Comité Exécutif. Pour 55 remain in membership a National Society rester membre, une Société nationale must pay its subscription each year. doit payer sa cotisation chaque année. The Executive Committee has the right Le Comité international a le droit de to terminate the membership of any mettre fin à la participation de toute National Society by a simple majority Société nationale par un vote à la ma­ vote. jorité simple.

6. Each individual or collective member of 6. Chaque membre individuel ou collectif a National Society is automatically a d'une Société nationale est automatique member of the International Society. ment membre de la Société internationale. In countries where no National Society exists, the resident shall apply for Les personnes résidant dans des pays où admission to a National Society of his il n'existe pas de Société nationale choice willing to accept his application. devront s'adresser, pour leur admission, à une Société nationale de leur choix prête & accepter leur demande.

NATIONAL SOCIETIES SOCIETES NATIONALES

7. A National Society may be affiliated to 7. Une Société nationale peut Stre affiliée other engineering societies, and it is à d'autres Sociétés d'ingénieurs et elle free to establish its articles of as­ est libre de rédiger ses clauses d'asso­ sociation and its organization in accord­ ciation et son organisation en accord ance with their requirements. avec leurs exigences.

8. A National Society shall at all times 8. Une Société nationale doit, à tout mom­ keep the Secretary General informed about ent, tenir le Secrétaire Général infor­ its address and the names of its officers. mé de son adresse et des noms des mem­ bres de son Bureau. 9. The Officers of the International Society 9. Les responsables de la Société interna­ are: tionale sont:

i) The President i) Le Président iiJ The Vice-Presidents ii) Les Vice-Présidents iii) The Secretary General iii) Le Secrétaire Général

President Président

10. The term of office of the President shall .10« Le mandat de Président est normalement normally occupy four years, in general de quatre ans; en général de la fin from the end of one International Confer­ d'une conférence internationale à la ence to the end of the next Conference. fin de la conférence suivante.

11. The President shall be nominated in ac­ 11. Le Président sera choisi conformément cordance with the rules stated in the aux règles fixées par le Règlement Inte By-Laws and elected by the Executive rieur et sa nomination devra Stre ap­ Committee. prouvée par le Conité Exécutif.

12. In the event of the resignation or death 12. Dans le cas de la démission ou du décès of the President, a new President shall du Président, un nouveau Président sera be appointed by the Vice-Presidents for nommé par les Vice-Présidents pour la the unexpired term of office. fin de la durée du mandat.

Should the President be unable to act an Si le Président se trouve indisponible International Conference he shall ask lors d'une Conférence internationale, one of the Vice-Presidents to act in his il devra désigner l'un des Vice-Prési­ place. dents pour le remplacer.

13. A President shall not be eligible for 13* A la fin de son mandat, le Président re-election on completion of his full ne sera pas rééligible. term of office.

14. The President shall represent the Inter­ 14. Le Président représentera la Société- national Society and shall perform the internationale et devra assurer les duties pertaining to such office,as well tâches relatives à ce mandat de :n8 ne as those entrusted to him by the Consti­ que celles qui lui seront confiées par tution and By-Laws or by the Executive les Statuts ou le Règlement Intérieur Committee. He cannot at an Executive ou par le Comité Exécutif. Il ne peut Committee Meeting at the same time be a voter en'tant que représentant de son voting representative of his country. pays lors des réunions du Comité Exécu He shall be responsible, in collabora­ ti’f. Il sera responsable avec le 3e-~ tion with the Secretary General, for crétaire Général, de la conduite des

56 the conduct of the affairs of the affaires de la Société. Society.

Vice-Presidents Vice-Président

15. One Vice-President shall represent each 15. Un Vice-Président devra représenter of the following geographical zones: chacunes des zones géographiques sui­ Africa vantes: Asia Afrique Australasia Amérique du Nord Europe Amérique du Sud North America South America Asie Australasie Europe The National Societies within each of these zones are given in Appendix A of Les Sociétés nationales comprises dans the By-Laws. New National Societies chacune de ces zones sont indiquées which may be formed in Central America dans l'annexe A du Règlement Inté­ shall be assigned to either North rieur. Les nouvelles Sociétés nationa America or South America according to les qui puissent se constituer en Amé­ the wish of the National Society itself rique Central seront affectées, selon and the Officers shall be informed of leur propre choix, soit à la zone d'Amé the decision. rique du Nord, soit à la zone d'Améri­ que du Sud. Leur décision devra Stre communiquée aux responsables.

16. The term of office for the Vice-Presi­ 16. La durée du mandat des Vice-Présidents dents shall normally occupy four years, devrait normalement Stre de quatre ans, i.e. from the end of one International c'est à dire de la fin d'une conférence Conference to the end of the next internationale à li fin de la conféren­ Conference. ce suivante.

17. The Vice-President shall be nominated 17. Les Vice-Présidents seront nommés par by the National Societies within the Iss Sociétés nationales à l'intérieur various geographical zones in accord­ des différentes zones géographiques ance with the rules stated ir. the By- conformément aux dispositions établies Laws, and formally elected by the par les règlements, et formellement Executive Committee at its next meeting. élus par le Comité Exécutif lors de sa prochaine réunion.

18. A Vice-President cannot at an Executive 18. Un Vice-Président ne peut voter comme Committee Meeting at the same time be a représentant de son pays lors d'une voting representative of his country, réunion du Comité Exécutif, sauf dans except as indicated in the By-Laws. les cas indiqués par le Règlement In­ térieur.

19. In the event of the death or retirement 19* Dans la cas du décès ou de la démis­ of a Vice-President his successor shall sion d'un Vice-Président; son succes­ be appointed by the President for the seur sera nommé par le Président pour unexpired term of office. Should a Vice- le reste de la durée de son mandat. Si President be unable to act at an Inter­ un Vice-Président ne peut pas assister national Conference, the President shall à une conférence, le Président invitera invite his successor to act in his place. son successeur à occuper son poste.

20. A Vice-President shall not be eligible 20. Un Vice-Président ne pourra pas 'être for re-election on completion of his réélu à la fin de son mandat. full term of office.

21. The Vice-President shall represent the 21. Un Vice-Président représentera la So­ International Society at the regional ciété internationale aux conférences conferences and other meetings to be régionales et aux autres réunions qui held under the auspices of the Inter­ seront tenues sous les auspices de la national Society within his geographical Société internationale à l'intérieur zone. de sa zone géographique.

Secretary General Secrétaire Général

22. The Secretary General shall be appointed 22. Le Secréraire Général est nommé p ir le at an Executive Committee meeting at Comité Exécutif, dans des conditions terms to be agreed. He shall be response qui feront l'objet d'un accord. Il ble under the general direction of the est resconsable, sous la direction gé­ President, for the conduct of all corres néral du Président, de toute la ccrres

57 pondence and current buaineaa of the pondance et du tr¿viil courant de la Society. He shall be responsible for the Société. Il est responsable de la pré preparation and distribution of the paration et de la diffusion de l ’ordre Agenda of the Executive Committee meet­ du jour des réunions du Comité Exécutif ings and for the preparation and main­ et de la préparation et de la mise au tenance of minutes of such meetings and point des procès-verbaux et des rapporte of reports thereon. At an Executive Com­ de ceB réunions. mittee Meeting he cannot represent his own country. Lors d'une réunion du Comité Exécutif, il ne peut représenter son propre pays.

23. The Secretary General shall send to each 23. Le Secrétaire Général devra s'assurer National Society an annual account of que toutes les cotisations et droits the dues owing, and shall ensure that all payés à la Société sont versés & un contributions and dues paid to the Society compte séparé et qu'un rélevé en est are placed in a separate account and that fait. Il est responsable de la tenue a record is kept. He is responsible for des comptes de la Société, de la pré­ keeping the accounts of the Society, for paration du budget annuel, des recettes the preparation of the annual budget of et des dépenses de la Société et des receipts and expenditures and for pay­ paiements dans la limite du budget ap­ ments for the Society up to the limit of prouvé. Il devra donner quittance pour the approved budget. He shall acknow­ toutes les somnes reçues et lui ou le ledge all-the money received and only he Président pourront seuls autoriser des or the President may authorize expendi­ dépenses. Le Secrétaire Général devra tures. The Secretary General shall préparer un résumé des comptes pour cha prepare a summary of the accounts for que réunion du Comité Exécutif et devra each meeting of the Executive Committee donner touteB explications demandées and shall give any explanation required concernant les dépenses exposées. of expenses incurred.

24. The Secretary General is responsible for 24. Le Secrétaire Général est responsable the reproduction and distribution of the de la reproduction et de la diffusion LiBt of Members in accordance with the des listes des membres, conformément instructions outlined by the Executive aux instructions du Comité Exécutif. Committee.

25. The location of the Secretariat shall be 25. Le siège du Secrétariat devra 8tre ap­ agreed by the Executive Committee. prouvé par le Comité Exécutive

EXECUTIVE COMMITTEE COMITE EXECUTIF

26. The Executive Committee for any meeting 26. Lors de chacune de ses réunions, le shall consist of the Officers of the Comité Exécutif sera constitué par le International Society and up to two Bureau de la Société internationale et representatives from each National par deux représentants de chaque Soci­ Society currently in membership, one of été nationale dont l'un devra ôtre dé­ whom shall be designated in advance to signé par avance comme le membre votant. act as the voting member. If the voting Si le membre votant est indisponible, member is unable to act, the other dele­ il sera remplacé par le second délégué gate may act for him.

27. Executive Committee meetings shall be held 27. Les réunions du Comité Exécutif, dev­ a) at the time of the International Con­ ront Stre tenues environ tous les deux ference and, if required; ans: b) at a suitable time between Conferences. a) à l'époque des Conférences inter­ nationales; b) à une date convenible entre les Conférences.

28. The conduct of an Executive Committee 28. La direction d'une réunion du Comité meeting by the President, the discussion Exécutif par le Président, la discus­ of matters on the Agenda or of any amend­ sion des questions portées k l'ordre ments put forward, shall be in accord­ du jour ou de toutes modifications ance with the rules set out in the By- proposées devront être faites confor­ Laws . mément aux dispositions établies par le Règlement Intérieur.

29. For the valid constitution of an Execu­ 29* La validité d'une réunion du Comité tive Committee meeting at least one- Exécutif nécessite la présence du third of the total numbers of National moins un tiers du nombre total des So Societies should have a representative ciétés nationales avec un pouvoir. ~

58 present with voting powers, except if Dans le cas où des modifications doi­ changes in the Constitution are to be vent être apportées aux Stituts et au made when the quorum must be as shown Règlement Intérieur voir paragraphe in paragraphs 35 and 36. 35 et 3o.

30. The Executive Committee may set up, by 30. Le Comité Exécutif peut créer à 1 i ma a plain majority of votes, standing and jorité simple des voix, des sous-Co- ad-hoc sub-committee and working mités permanents ou ad-hoc, et aes parties with whatever powers and terms groupes de travail dont il fixera les of reference it may decide. attributions et la durée.

CONFERENCES CONFERENCES

31. International Conferences shall be held 31. Des Conférences internationaies auront approximately every fourth year in a lieu environ tous les quatre ans dans country to be decided upon by the Exe­ un pays choisi par le Co.nité Exécutif. cutive Committee. The organization and Le pays invitant est responsable de 1' financing of an International Confer­ organisation et du financement de la ence are the responsability of the Conférence internationale. La Société National Society of the host country. nationale est tenue de se conformer The National Society is obliged to aux directives, règles et procédures follow the principles, rules and pro­ figurant dans le Règle.nent Intérieur cedures for the Conference set out in et décidés par le précédent Comité Ex£ the By-Laws and decided upon by the cutif. preceding Executive Committee or by the Officers of the Society.

32. The National Society responsible for 32. La Société n.itionile responsable de each conference shall determine the chaque conférence devra déterminer 1 r s individual registration fees for the droits d'inscription individuels, mais Conference, but these shall be approved ceux-ci devront être approuvés par le by the Secretary General in consulta­ Secrétaire Général, en accord avec le tion with the President. Président.

33* National Societies are encouraged to 33- Les Sociétés nationales sont invitées organise technical meetings and con­ à organiser des réunions techniques et ferences but these may be termed des conférences, mais celles-ci ne pou Regional Conferences of the Internation­ rront être considérées comme conféren­ al Society only if the time, place and ces régionales de la Société interna­ subject have been approved by the ap­ tionale que si l'époque, le lieu et le propriate Vice-President in consulta­ sujet ont été approuvés par le Vice-Pré tion with the Secretary General. sident intéressé, en accord avec le crétaire Général.

SUBSCRIPTIONS AND CONTRIBUTIONS COTISATIONS ET CONTRIBUTIONS

34. For the purposes of meeting the expenses 34. Dans le but de couvrir les dépenses ex incurred by the Society for its opera­ posées par la Société pour son activité tion, each National Society shall pay chaque Société nationale devra régler its subscription annually in advance. sa cotisation chaque année, par an­ ticipation.

AMENDMENTS TO CONSTITUTION AND BY-LAWS MODIFICATIONS AUX STATUTS ET REGLEMENTS

35. Amendments to this Constitution may be 35. Des modifications aux présent Sta­ proposed by any National Society. Such tuts peuvent être proposées par les amendments shall be submitted in writing Sociétés nationales. De telles mo­ to the Secretary General, early enough difications devront être adressées, to have the proposal submitted to all par écrit, au Secrétaire Général, as National Societies at least three monUis sez tôt pour que la proposition soit prior to the Executive Committee meet­ soumise à toutes les Sociétés natio­ ing, at which the amendment is to be nales au moins trois mois avant la placed on the Agenda. réunion du Comité Exécutif dont l'or dre du jour devra comporter les modi Adoption of an amendment will require fications proposées. L'adoption d' at least two-thirds of the total member une modification exigera au moins les countries to be represented at the meet­ ing and an affirmative vote of no less deux tiers du total des pays devant than two-thirds of those members who être représentés à la réunion et un vote positif d'un minimum de deux are present and entitled to vote. tiers des membres qui sont présents Any member country which will not be et habilités à voter. Tout pays qui represented at the meeting may submit its ne sera pas représenté à la réunion

59 views and vote in writing in accordance doit faire connaître son opinion et with the rules set out in the By-Laws. son vote par écrit, conformément à In this ev?nt that member country will be la procédure établie dans le Règle­ regarded as being present for the purpose ment Intérieur. Dana ce cas, ce paye of the quorum for the vote. sera considéré comme étant présent lors de la détermination du quorum pour le vote. Les modifications du Règlement Inté­ 36.Amendments to the By-Laws shall follow rieur doivent suivre la procédure the procedure set out in paragraph 35, établie au paragraphe 35, si ce n' except that a simple majority in favour est que dans ce cas seule une majoré of the amendments is required, instead té simple en faveur des modifications of two-thirds as above. est exigée au lieu des deux tiers in diqués plus haut.

A P P E N D IX C (N) BY-LAW S (Thaw By-La «» *ould b. read APPENDICE C (ii) REGLEMENT INTERIEUR ICa Rtgtanwm intfrtour in conjuction VMth the Society* ! Constitution) doit être lu en mime temps que le» Statut de le Société) MEMBERSHIP PARTICIPATION

1. When there exists in a country a 1. Lorsque dans un pays il existe une So National Society it may ask to become ciété nationale, celle-ci peut deman­ a member of the International Society. der a adherer à la Société Internati£ To do this, it should send a formal nale. application to the Secretary General signifying that it wishes to become a Pour cela, la Société nationale de ce pays devra envoyer une demande offi­ menber and is prepared to adhere to the cielle au Secrétaire Général indiquant Constitution and to collaborate fully qu'elle souhaite devenir membre et est with the Society. Included with the ap­ prSte à adhérer aux Statuts et à col­ plication should be a copy of the sta­ laborer pleinement avec la Société. tutes of the National Society (in Doit Stre jointe à la demande une copie English or French). If the Secretary de ses Statuts en anglais ou en fran­ General is satisfied that the appli­ çais. cation is in order he shall include it on the Agenda for the next Executive Si le Secrétaire Général reconnaît que Committee meeting, which has the right to accept or reject it. No entrance fee la demande est en bonne et due forme, il l'inscrira à l'ordre du jour de la is payable. réunion suivante du Comité Exécutif qui a la faculté de l'accepter ou de la re jeter. Il n'y a pas de droit d'entrée.

2. A country may not have more than one 2. Un pays ne peut avoir plus d'une Soci­ National Society, but a National été nationale, mais une Société Natio­ Society may comprise a group of coun­ nale peut comprendre un groupe de pays tries not otherwise in membership. qui ne font pas individuellement partie de la Société. 3. A National Society which has not paid 3. Une Société nationale qui n'a pas payé its annual subscription within six sa cotisation annuelle dans un délai months of the date it is due, without de 6 mois à compter de la date où elle offering a reasonable excuse, will auto­ est due, sans présenter d'excuse rai­ matically cease to belong to the Inter­ sonnable, cessera automatiquement de national Society but may rejoin without faire partie de la Société internatio­ penalty by paying all the back subscrip­ nale, mais pourra la réintégrer sans tions owing. pénalité en réglant toutes les cotisa­ tions arriérées.

4. A National Society which has resigned 4. Une Société nationale qui a résilié sa its membership may apply to rejoin the participation ou l'a laissé périmer Society. If accepted, the Executive pourra demander à réintégrer la Soci­ Committee shall decide what entrance été. Si ceci est accepte, le Comité fee, if any, shall be payable. Exécutif devra décider si un droit d' entrée doit lui être demandé, et le NATIONAL SOCIETIES cas échéant quel en sera le montant. SOCIETES NATIONALES 5. If the statutes of a National Society are modified, copies of the proposed 5. Toute modification des Statuts d'une new statutes (in English or French) Société nationale doit Stre envoyée, shall be forwarded to the Secretary en anglais ou en français, au Secréta­ General who will draw the Executive ire Général qui attirera l'attention Committee's attention to any funda­ du Comité Exécutif sur les modifica­ mental changes. tions importantes.

60 views and vote in writing in accordance doit faire connaître son opinion et with the rules set out in the By-Laws. son vote par écrit, conformément à In this ev?nt that member country will be la procédure établie dans le Règle­ regarded as being present for the purpose ment Intérieur. Dana ce cas, ce paye of the quorum for the vote. sera considéré comme étant présent lors de la détermination du quorum pour le vote. Les modifications du Règlement Inté­ 36.Amendments to the By-Laws shall follow rieur doivent suivre la procédure the procedure set out in paragraph 35, établie au paragraphe 35, si ce n' except that a simple majority in favour est que dans ce cas seule une majoré of the amendments is required, instead té simple en faveur des modifications of two-thirds as above. est exigée au lieu des deux tiers in diqués plus haut. A P P E N D IX C (N) BY-LAW S (Thaw By-La «» *ould b. read APPENDICE C (ii) REGLEMENT INTERIEUR ICa Rtgtanwm intfrtour in conjuction VMth the Society* ! Constitution) doit être lu en mime temps que le» Statut de la Société) MEMBERSHIP PARTICIPATION

1. When there exists in a country a 1. Lorsque dans un pays il existe une So National Society it may ask to become ciété nationale, celle-ci peut deman­ a member of the International Society. der a adherer à la Société Internati£ To do this, it should send a formal nale. application to the Secretary General signifying that it wishes to become a Pour cela, la Société nationale de ce pays devra envoyer une demande offi­ menber and is prepared to adhere to the cielle au Secrétaire Général indiquant Constitution and to collaborate fully qu'elle souhaite devenir membre et est with the Society. Included with the ap­ prSte à adhérer aux Statuts et à col­ plication should be a copy of the sta­ laborer pleinement avec la Société. tutes of the National Society (in Doit Stre jointe à la demande une copie English or French). If the Secretary de ses Statuts en anglais ou en fran­ General is satisfied that the appli­ çais. cation is in order he shall include it on the Agenda for the next Executive Si le Secrétaire Général reconnaît que Committee meeting, which has the right to accept or reject it. No entrance fee la demande est en bonne et due forme, il l'inscrira à l'ordre du jour de la is payable. réunion suivante du Comité Exécutif qui a la faculté de l'accepter ou de la re jeter. Il n'y a pas de droit d'entrée.

2. A country may not have more than one 2. Un pays ne peut avoir plus d'une Soci­ National Society, but a National été nationale, mais une Société Natio­ Society may comprise a group of coun­ nale peut comprendre un groupe de pays tries not otherwise in membership. qui ne font pas individuellement partie de la Société. 3. A National Society which has not paid 3. Une Société nationale qui n'a pas payé its annual subscription within six sa cotisation annuelle dans un délai months of the date it is due, without de 6 mois à compter de la date où elle offering a reasonable excuse, will auto­ est due, sans présenter d'excuse rai­ matically cease to belong to the Inter­ sonnable, cessera automatiquement de national Society but may rejoin without faire partie de la Société internatio­ penalty by paying all the back subscrip­ nale, mais pourra la réintégrer sans tions owing. pénalité en réglant toutes les cotisa­ tions arriérées.

4. A National Society which has resigned 4. Une Société nationale qui a résilié sa its membership may apply to rejoin the participation ou l'a laissé périmer Society. If accepted, the Executive pourra demander à réintégrer la Soci­ Committee shall decide what entrance été. Si ceci est accepte, le Comité fee, if any, shall be payable. Exécutif devra décider si un droit d' entrée doit lui être demandé, et le NATIONAL SOCIETIES cas échéant quel en sera le montant. SOCIETES NATIONALES 5. If the statutes of a National Society are modified, copies of the proposed 5. Toute modification des Statuts d'une new statutes (in English or French) Société nationale doit Stre envoyée, shall be forwarded to the Secretary en anglais ou en français, au Secréta­ General who will draw the Executive ire Général qui attirera l'attention Committee's attention to any funda­ du Comité Exécutif sur les modifica­ mental changes. tions importantes.

60 OFFICERS AND SECRETARIAT BUREAU ET SECRETARIAT 6. Président 6. President Environ un an avant l'expiration du About one year before the expiry of the mandat du Président de la Société in­ term of office of the President, the ternationale, le Secrétaire Général Secretary General shall invite each invitera chaque Société nationale à National Society to send him its choice lui faire connaître la personne qu' - of member for the next President.having elle propose pour le remplacer, après first ascertained that he is willing s'Stre assuré qu'elle est disposée à to serve if elected. The candidate needs remplir ces fonctions si elle est é- not necessarily be a member of that lue. Un résumé de ses qualifications National Society nor within its geogra­ à ce poste devra être joint. Le can­ phical zone. The Secretary General shall didat ne devra pas nécessaire.nent être then send to each National Society a membre de cette Société nationale ni list of all the candidates and the Exe-_ résider dans sa zone géographique. Le cutive Committee shall be asked to vote Secrétaire Général enverra ensuite à on these names at their next meeting. chaque Société nationale une liste de tous les candidats et le Comité Exécu 7. Vice-Presidents tif sera invité à voter sur ces noms lors de sa réunion suivante. About one year before the expiry of the term of office of the Vice-Presidents, 7. Vice-Présidents the Secretary General shall notify the various National Societies that an elec­ Environ un an avant l'expiration du tion is to take place and shall invite mandat des Vice-Présidents, le Secré­ them to return to him the names of up taire Général devra notifier aux di­ two persons within their geographical verses Sociétés nationales qu'une éleç zone who they have ascertained would be tion doit avoir lieu et les inviter à willing to serve if elected. The lui faire connaître le nom de deux per Secretary General shall then prepare a sonnes au maximum résidant dans leur ballot list and shall invite the various zone géographiquei et qui sont dispo­ National Societies to return their com­ sées a remplir le poste si elles sont pleted forms to him. The names of the élues. Le Secrétaire Général prépare successful candidates shall be reported ra ensuite une liste électorale et in to the next meeting of the Executive vitera les différentes Sociétés natio Committee. Should two candidates tie in nales à lui renvoyer leur bulletin ~ the election, the President, after complété. Les Noms des candidats élus consultation with the existing Vice- seront notifiés à la séance suivante President, shall decide which name to du Comité Executif. S'il y a ballot- put forward. age entre deux candidats, le Prési­ dent décidera en accord avec les Vice- 8. Secretariat Présidents lequel sera élu.

The Secretariat is at the Institution 8. Secrétariat of Civil Engineers, London, by agreement with that body. Le Secrétariat se tient à l'institu­ tion des Ingénieurs Civils à LONDRES EXECUTIVE COMMITTEE MEETINGS en accord avec cet Organisme.

9. Place REUNIONS DU COMITE EXECUTIF An invitation to act as host for the 9. Lieu Executive Committee meeting held between Tout pays proposant sa candidature International Conferences should be sent pour organiser la réunion du Comité to the Secretary General sufficiently Exécutif qui aura lieu entrj les Con­ early before an International Conference férences internationales devra envoyei so that it can be placed on the Agenda une invitation au Secrétaire Général of the Executive Committee meeting. suffisamment à l'avance pour que cel le-ci puisse être portée à l'ordre du jour de la réunion du Comité Exécutif. National Societies making arrangements Les Sociétés nationales organisant une for a Regional Conference should bear conférence régionale ne devront pas in mind that the time and place of their oublier que la date et le lieu de leur Conference might be appropriate for an conférence pourraient convenir égale­ Executive Committee meeting also. In ment pour une réunion du Comité Exécu general, two successive days are requir­ tif. En général, deux jours consécu­ ed for an Executive Committee meeting. tifs sont nécessaires pour une réu­ If an invitation is rtceived from more nion du Comité ¿xécutif. Si plusie­ than one National Society the final urs Sociétés nationales font parvenir selection will be made by billot. une invitation, le choix fera l'objet d'un vote.

61 «

10.Agenda 10. Ordre du jour National Societies must submit to the Les Sociétés nationales doivent sou­ Secretary General six months before an mettre au Secrétaire Généril, six mois Executive Committee meeting any item avant une réunion du Comité Exécutif, which they wish to have placed on the toutes les questions qu'elles souhai­ Agenda, and three months before the meet­ tent voir porter à l'ordre du jour; ing the Secretary General will send the quatre mois avant la réunion le Secr£ complete Agenda to each National Society. taire Général enverra l'ordre du jour The Agenda will generally include the complet à chaque Société nationale. following items: L'ordre du jour comportera générale­ ment les rubriques suivantes: a) Procès verbal de la réunion précé a) Minutes of the previous meeting: dente matters arising b) Admission de nouveaux pays mem­ b) Election of the new member countries bres c) Business raised by President c) Questions soulevées par le Prési­ d) Reports of Vice-Presidents dent e) Business raised by National Societies d) Rapports de Vice-Présidents f) Business from other sources e) Questions soulevées par les Soci­ g) Financial statement for preceding étés nationales period and draft budget for ensuing f) Questions émanant d'autres sources peri od g) Situation financière pour le pé­ h) Invitations for holding the next riode précédente, et projet de Conference or/Report and recommenda­ budget pour la période a venir tions of Conference Procedure Com- - h) Invitation a recevoir la Conféren mittee ce suivante ou rapport et recom­ i) Invitations for holding the next Exe­ mandation du Comité d'organisation cutive Committee meeting (if applica­ des Conférences ble) i) Invitations pour la prochaine réu j) Election of next President (if appli­ nion du Comité Exécutif (s'il y a cable ) lieu) k) Names of new Vice-Presidents (if ap­ j) Election du Président suivant (s' plicable ) il y a lieu) 1) Reports of other standing committees k ) Noms des nouveaux Vice-Présidents m) Items submitted after preparation of (S'il y a lieu) Agenda, subject to agreement of 1) Rapport des Comités permanents Chairman m) Rubriques soumises après la prépa­ n) Any other business. ration de l'ordre du jour soumis a l'accord du Président n) Questions diverses. 11.Rules of Conduct of Meetings 11. Organisation des réunions General Généralités i) The Chairman of meetings of the Ex­ ecutive Committee will normally be i) Le Président de séance du Co­ the President. In his absence, the mité Exécutif sera normalement Vice-President nominated by him, or le Président. En son absence, one of the other Vice-Presidents, le Vice-Président désigné par will act as Chairman lui, ou l'un des autres Vice- Présidents, assurera la prési­ ii) Members should address the Chair at dence all times ii) Les membres pourront s'adresser au Président à tout moment iii) The minutes of Executive Committee meetings will be recorded by the iii) Le procès verbal des réunions Secretary General. du Comité Exécutif sera dressé par le Secrétaire Général. IP. Voting 12. Vote i ) Each National Society shall have one vote only. i) Chaque Société nationale n'aura qu'une voix ii) Voting shall in general be by a ii) Le vote s ' effectuera à :na:n show of hands except for the e- levé excepté pour l'élection du lection of the President, the place Président, la place de la Jonfé for the next International Confer­ rence Internationale suivante ence or Executive Committee meet­ ou la réunion du Jo:nité ixécutif ing, or for other matters specified ou pour d'autres questions spé­ at the time by the Chairman. cifiées par le Fresiue.-it

62 iii) Resolutions may be made by a plain iii) Les résolutions peuvent 8tre majority of those voting, except prises à la majorité simple des for those altering the Constitution, vois, excepté pour celles qui for which the assent of two thirds modifieraient les Statuts ou le of those voting is required. In Règlement Intérieur, et pour the event of an equality of votes lesquels l'accord de deux tiers on any motion the Chairman shall des votants est requis. Dans have a casting vote. le cas d'égalité des voix sur une motion, la voix du Président iv) The Chairman is not entitled to sera prépondérante vote except as specified above. Vice-Presidents are not entitled to iv) Le Président ne prend pas part vote except as indicated in (v) b^ au vote, excepté dans le cas low. The Secretary General is not spécifiés ci-dessus. Les Vice- entitled to vote. Présidents et le Secrétaire Gé­ néral ne prennent pas part au v) A National Society which is unable vote, excepté dans les cas ind^ to send a representative may dele­ qués ci-dessous (v) gate its voting rights either to their Vice-President, or to the dele v) Les Sociétés nationales non pré gate of another country within sentes à la réunion peuvent au­ their region. toriser le Vice-Président de leur région à voter à leur place à condition qu'en soit averti à 13. Motins, Amendments and Resolutions l'avance le Secrétaire Général.

In order to facilitate the conduct of 13. Motions, Amendements et Résolutions business Afin de faciliter la conduite des tra i) Motions will be printed on the vaux: agenda and no other motions will be discussed except by prior agree i) Les points soumis au Comité se­ ment with the Chairman. Minor maT ront inscrits à l'ordre du jour ters may be raised under "Any other et aucune autre .question ne se business". ra discutée, sauf accord préal­ able du Président. Les ques­ i i ) A motion for which no seconder can tions mineurs peuvent Stre sou­ be found cannot be discussed or put levées sous la rubrique "ques­ to the vote. If falls to the ground tions diverses" and cannot be reconsidered during ii) Une motion qui n'a pas de "dé­ the meeting. Motions by the Chair fenseur" ne peut Stre discutée man require no seconder. ni soumise au vote, elle tombe et ne peut Stre reprise durant iii) In discussing a motion no member la seusion. Les motions émises may speak more than once, except par le Président n'ont pas be­ at the invitation of the Chairman. soin d'être présentées The mover, however, will be given the right of reply at the end of iii) Aucun membre ne peut prendre la the discussion. parole plus d'une foie sur une motlen, sauf invitation du Pré­ iv) After the discussion the Chairman sident. L'auteur de la motion will read the motion to ensure that aura cependant le droit de ré­ the meeting knows exactly what it pondre à la fin de la disoussion is voting for, and a vote will ba taken. iv) Après la discussion, le Prési­ dent lira la motion pour s'as­ surer que l'assemblée connaît v) If the motion is passed; it be­ exaotement ce sur quoi elle comes a resolution. Neither a vote, et il sera procédé au resolution nor a failed motion may vote be reopened during the current session of the Committee. v) Si la motion âst accepté, elle devient une résolution. Ni une vi) Amendment is an alteration made résolution ni une motion reje­ by adding, changing, substituting tées ne peuvent Stre remises en or omitting a word, phrase or sen question pendant la session du tence of a motion. It may partial Comité ly change the meaning of the motion, but must never contradict it. A- vi) Un amendement est une modifica­ mendmente should be passed to the tion effectuée par addition, Chairman in writing. changement, substitution ou 63 omission d'un mot, d'un membre vii) A member who has spoken on a mo­ de phrase ou d'une phrase d'une tion cannot move an amendment, but motion. Il peut changer pirtiel he may speak on an amendment moved lement la signification de la by another. motion nais ne doit jamais la contredire. Les amendements de viii) If there are several amendments to vront être soumis au Président- a motion, they will be considered par écrit in order, so that an amendment to alter the first par of the motion vii) Un membre qui a parlé sur une comes first, etc. motion ne peut proposer un amen dement, mais il peut parler sur un amendement proposé p.ir un ix) Each amendment must be moved, sec­ autre onded, discussed and voted on sepa rately. Only one amendment may be viii) S'il y a plusieurs amendements' discussed at a time. a une motion, ils seront étudiés dans l'ordre de façon qu'un amen x) When the amendments have been sepa dement destiné a modifier la- rately disposed of, the Chairman premiere partie de la motion .¿I will put the motion as amended vienne en premier, etc. clearly to the meeting. Further discussion may arise before the ix) Chaque amendement doit être pru vote is taken. pose, appuyé, discuté et faire- l'objet d'un vote séparé. Un xi) There is right of reply for the seul amendeaent peut être discu mover of an amendment. If, how­ té à la fois ever, his amendment has been carri^ ed and materially alters the sense x) Quand les amendements auront été of the motion, the amended motion traités séparément, le Président will become the substantive motion, soumettra clairement la motion à and the right of reply will devolve l'assenblée. Une discussion com from the mover of the original mo­ plémentaire peut prendre place tion to the mover of the amendment. avant le vote

xi) L'auteur d'un amendement n'a pas 14. The minutes of the Executive Committee droit de réponse. Si cependant shall be approved an signed at the time son amendeaent a été adopté et of the meeting and a copy shall be sent modifie sensiblement le sens de by the Secretary General to each National Society. la motion, la motion amendée de­ viendra une motion formelle et le droit de réponse passera de INTERNATIONAL CONFERENCES l'auteur de la motion originale a l'auteur de l'amendement. 15. Place 14. Les minutes du Comité Exécutif seront An invitation to act as host for an Inter approuvées et soussignées lors de la national Conference and the accompanying réunion et le Secrétaire Général en Executive Committee meeting must be enverra une copie à chaque Société Na received sufficiently long in advance tionale. so that it can be placed on the Agenda of the Executive Committee at the time CONFERENCES INTERNATIONALES of the previous Conference. Before ac­ cepting an invitation the Executive Com­ 15. Lieu mittee shall be satisfied that the host country has: Toute proposition d'organiser une Con férence internationale et la réunion correspondante du Conité Exécutif de­ i) a meeting place with appropriate vra être reçue suffisamment longtemps, facilities. de façon qu'elle puisse être portée à l'ordre du jour de la réunion du Oomi ii) Bui table hotel accommodation for té Exécutif au moment de la Conféren­ members and their wives. ce précédente.

iii) sufficient of interest in the Avant d'accepter une invitition, la country for technical and other Comité Exécutif devra s'assurer que le visits. pays invitant a:

iv) expressed a willingness to follow i) un lieu de réunion avec les fa­ the Conference rules laid down by cilités appropriées the Executive Committee or the ii) des installations hOtelièras Officers. convenables pour las ne.abres et

64 leurs épouses An invitation from a country which debars iii) une possibilité suffisante de visiting members solely on grounds of visites techniques et autres nationality, race, creed or political présentant un intérêt views will not be acceptable. If an invi­ iv) exprimé la volonté de se confor tation is received from more than one mer aux règles de la Conférence National Society the final selection établie par le Comité Exécutif. shall be made secret ballot. Une invitation émanant d'un pays qui imposerait des restrictions pour des 16. Programme raisons de nationalité, race, reli­ gion, ou politique, ne serait Daa con The general principles for the procedure sidérée comme acceptable. Si plu­ to be followed at an International Con­ sieurs Sociétés nationales se propo­ ference shall be decided upon by the sent le choix sera faite au scrutin Executive Committee or by the Officers secret. if the Executive Committee is not yet 16. Programme to meet, having received a report from Les directives générales relatives à the Conference Procedure Committee set l'organisation d'une Conférence inter up for this purpose and appointed at nationale seront arrêtées par le Comi the previous Conference. The detailed té Exécutif sur rapport du Comité sp¥ arrangements shall be the responsibility cial nommé à la Conférence précédente, of the Organising Committee of the host et établi dans ce but ou par les Res­ country, in consultation with the Presi­ ponsables, si le Comité Exécutif ne dent and Secretary General. doit pas se réunir. La responsabilité des dispositions de détails appartien dra au Comité d'organisation du pays invitant, en accord avec le Président 17. Membership et le Secrétaire Général. 17. Participation These conferences are intended for mem­ bers of the International Society and Ces conférences sont destinées aux their ladies only. Other persons wishing membres de la Société internationale to attend must obtain the permission of et a leurs épouses uniquement. Les the National Society in their country of autres personnes souhaitant a partie^ residence, or of the Secretary General. per devront obtenir la pemission de la Société nationale de leur pays de résidence ou du Secrétaire Général. SOUS-COMITES TECHNIQUES

TECHNICAL SUB-COMMITTEES 18 . Les Sous-comités Techniques nommés par le Comité Exécutif devront présen 18. Technical Sub-Conur.ittees appointed by ter leurs rapports au Comité Exécutif the Executive Committee shall report to lors de la Conférehce internationale the Executive Committee at the time of suivante. the next International Conference. COTISATIONS

SUBSCRIPTIONS 19. Chaque Société nationale versera à l'ordre de la Société sa cotisât ion an 19. Each National Society shall pay to the nuelle le 1er Janvier de chaque an­ order of the Society its subscription née. A compter du 1-1-1966, le mon­ annually in qdv?nce on 1st January each tant a été fixé par le Comité Exécutif year. From 1st January 1966 the amount (réunion de MONTREAL en 1965) à: was fixed by the Executive Committee % 25.00 (E. U. A. ) (meeting at Montreal in 1965) at par Comité National $25.00 (U.S.) per National Committee,plua majorés de: $ 0.75 (E. U. A.) 8 0.75 (U.S.) per individual member. Par membre individuel

At any time the basis of subscriptions A toute époque la cotisation sera cei^ shall be that agreed by the most recent le adoptée par la plus récente réunion meeting of the Executive Committee, the du Comité Exécutif, le nombre des mena number of members in the National Society br^B de la Société nationale étant ce lui de la date du paiement. being that at the time the payment is due. The Executive Committee shall Il sera présenté un rapport financier have a financial report at each meeting à chaque réunion du Comité Exécutif. and shall regularly review the amount of Le montant de la cotisation sera revu the subscription. h cette occasion.

65 LISTE DES MEMBRES LIST OF MEMBERS 20. About 18 months before an International 20. Environ dix huit mois avant une Con­ Conference, no later than a date speci­ férence Internationale, et au plus - fied by the Secretary General, each tard à une date spécifiée par le Se­ Rational Society ahall aend to him the crétaire Général, chaque Société na­ current list of its members, with their tionale devra lui envoyer la liste m^ addresses and occupations, and the se à jour de ses membres avec leurs permanent address of ita Secretary. The adresses et leurs professions, ainsi lists are to be typed in accordance que l'adresse permanente de son Secr£ with instructions issued at the time by taire. Les listes doivent être dact£ the Secretary General, the instructions lographiées, conformément aux instruç for the 1968 list being as given in tions établies en temps utils par le~ Appendix B. The Secretary General will Secrétaire Général, les instructions then distribute to each National Society pour la liste 1968 étant celles qui a sufficient number of bound copies of sont données dans l'annexe B. Le Se­ the complete list of members for each crétaire Général diffusera ensuite & individual to have one if he so chooses. ohaque Société nationale un nombre de A National Society which has allowed its jeux, de la liste complète des mem- - membership to lapse will not be included bres, correspondant au nombre d'adhé­ in the list. rents. Une Société nationale qui a laissé ae périmer sa participation ne The current Constitution and By-Laws figurera pas sur la liste. shall be included with the published list of members. Les Statuts en vigueur et le Règle- - ment Intérieur seront inclus dans la liste des membres publiée.

ANNEX A 4 5 2 l l I 4 List of National Societies within Liste des Sociétés nationales à l'intérieur the various geographical zones at des zones géographiqueB au 1er Janvier 1969

EUROPEASIE_ Europe Asia Autriche Chine Populaire Belgique Indes Auatria China (People's Bulgarie Israël Belgium Republic) Tchécoslovaquie Japon Bulgaria India Danemark Asie du Sud-Est Czechoslovakia Israel Finlande Denmark Japan France AMERIQUE DU NORD Finland S.E. Asia Allemagne de l'Ouest France North America Grèce Canada Germany (W) Hongrie Mexique Greece Canada Irlande E. U. A. Hungary Mexico Hollande Ireland U.S.A. Italie AMERIQÜE_DU SUD Italy South America Norvège Netherlanda Pologne Argentine Norway Argentine Portugal Brésil Poland Brazil Espagne Colombie Portugal Colombia Suède Equateur Spain Ecuador SuiSBO Pérou Sweden Peru Turquie Vénézuela Switzerland Venezuela Royaume-Uni Turkey AFRIQUE Africa U.R.S.S. United Kingdom Yougoslavie U.S.S.R. Morocco Maroc Yugoslavia Rhodesia Rhodésie South Africa Afrique du Sud

AUSTRALASIE Australasia Australia Australie New Zealand Nouvelle Zélande

66 ANNEXE B ANNEX B a c s z = = m Préparation de la lista des MEMBRES 1968. PREPARATION OP LIST OP MEMBERS ------T W ------Instructions aux Sociétés Nationales et aux dactylographes

INSTRUCTIONS TO NATIONAL SOCIETIES AND ------T7TT5T5------Votre texte doit être photographié et ré­ duit de 25$. C'est pourquoi il esi, essen­ tiel que les instructions suivantes soient Your manuscript will be photographed and suivies. reduced by 25^ It is therefore essential that the follow i) Utiliser de préférence (mais non ing instructions are followed: obligatoirement) une machine à écrire électrique "Elite" (c'est- à-dire celle utilisée dans i) Use preferably (but not essential ce texte) ly) an electric typewriter. Type face MUST BE 'Elite' (i.e., the ii) N'utilisez qu'une seule fois un - same size as this) ruban très noir

ii ) Use a one-only very black ribbon; iii) Assurez-vous que les caractères - sont propres iii) Make sure that the type-face is clean; iv) Fournir une copie carbone sur pe­ lure fine iv) Supply one carbon copy on flimsy paper; v) Dactylographier les noms de vos membres par ordre alphabétique ri^ v) Type the names of your members in goureux; les listes doivent etre strict alphabetical order; lists vérifiées soigneusement. Toute should be checked carefully. Any correction apparaîtra également corrections which show up on the quand les pages seront photogra­ manuscript will also show when the phiées. pages are photographed. Ne taper que sur un cflte du papier spécial MS qui vous sera fourni, et taper à interval Type on one side only of the special MS les simples sur trois colonnes en restant en paper provided: type in single spacing, in tre les lignes bleus extérieures comme sur three columns, keeping within the outside les spécimen ci-joint reproduit depuis votre blue lines, as on the enclosed sample, inscription sur la liste des membres en - copied from your entry in the 1964 list of 1964. members.

Appendix D Report on Activities of Asian Region 1966-1060 Appendice D Rapport sur lei Activités en Asie 1B6B-106B

1. COUNTRY 4. APPROXIMATE NUMBER OF MEMBERS Southeast Asia (Malaysia, Singapore, Thailand, 240)Hongkong, Philippines, Viet Nam, 2. NAME OF SOCIETY (Taiwan, Pakistan, Papua. Southeast Asian Society of Soil Engineer ing 5. MEETINGS OR CONFERENCES

a. Without published proceedings 3. OPPICERS OP THE SOCIETY b. With published proceedings

Dr. Za-Chieh Moh, President "Southeast Asian Regional Conference of Dr. John D. Nelson, Secretary-Treasurer Soil Engineering", 1967 at Bangkok, spon sored by Asian Institute of Technology,- Committee Members: Mr. Khaja Azeemuddin, ASCE, Inst, of C. E. (U.K.), Engineering Dr. Sirilak Chaudraugsu, Mr. Bun Don, Institute of Thailand. In English, Cost Prof. Sean Maclcey, Prof. Chin Fun Eee, $20.00, available from Dr. Za-Chieh Moh, Mr. Joel C. Santos, Mr. Chau CheeWah. Asian Institute of Technolo^.

67 ANNEX B ANNEXE B a c s z = = m Préparation de la liste des MEMBRES 1968. PREPARATION OP LIST OP MEMBERS ------T W ------Instructions aux Sociétés Nationales et aux dactylographes

INSTRUCTIONS TO NATIONAL SOCIETIES AND ------T7TT5T5------Votre texte doit être photographié et ré­ duit de 25$. C'est pourquoi il esi, essen­ tiel que les instructions suivantes soient Your manuscript will be photographed and suivies. reduced by 25^ It is therefore essential that the follow i) Utiliser de préférence (mais non ing instructions are followed: obligatoirement) une machine à écrire électrique "Elite" (c'est- à-dire celle utilisée dans i) Use preferably (but not essential ce texte) ly) an electric typewriter. Type face MUST BE 'Elite' (i.e., the ii) N'utilisez qu'une seule fois un - same size as this) ruban très noir

ii ) Use a one-only very black ribbon; iii) Assurez-vous que les caractères - sont propres iii) Make sure that the type-face is clean; iv) Fournir une copie carbone sur pe­ lure fine iv) Supply one carbon copy on flimsy paper; v) Dactylographier les noms de vos membres par ordre alphabétique ri^ v) Type the names of your members in goureux; les listes doivent etre strict alphabetical order; lists vérifiées soigneusement. Toute should be checked carefully. Any correction apparaîtra également corrections which show up on the quand les pages seront photogra­ manuscript will also show when the phiées. pages are photographed. Ne taper que sur un cflte du papier spécial MS qui vous sera fourni, et taper à interval Type on one side only of the special MS les simples sur trois colonnes en restant en paper provided: type in single spacing, in tre les lignes bleus extérieures comme sur three columns, keeping within the outside les spécimen ci-joint reproduit depuis votre blue lines, as on the enclosed sample, inscription sur la liste des membres en - copied from your entry in the 1964 list of 1964. members.

Appendix D Report on Activities of Asien Region 1966-1060 Appendice D Rapport sur les Activités en Asie 1066-1060

1. COUNTRY 4. APPROXIMATE NUMBER OF MEMBERS Southeast Asia (Malaysia, Singapore, Thailand, 240)Hongkong, Philippines, Viet Nam, 2. NAME OF SOCIETY (Taiwan, Pakistan, Papua. Southeast Asian Society of Soil Engineer ing 5. MEETINGS OR CONFERENCES

a. Without published proceedings 3. OPPICERS OP THE SOCIETY b. With published proceedings

Dr. Za-Chieh Moh, President "Southeast Asian Regional Conference of Dr. John D. Nelson, Secretary-Treasurer Soil Engineering", 1967 at Bangkok, spon sored by Asian Institute of Technology,- Committee Members: Mr. Khaja Azeemuddin, ASCE, Inst, of C. E. (U.K.), Engineering Dr. Sirilak Chaudreugsu, Mr. Bun Don, Institute of Thailand. In English, Cost Prof. Sean Maclcey, Prof. Chin Fun Eee, $20.00, available from Dr. Za-Chieh Moh, Mr. Joel C. Santoe, Mr. Chau CheeWah. Asian Institute of Technolo^.

67 "Specialty Session on Engineering Prop - ($15.00 for two volumes, from ertiee of Lateritic Soils", Mexico City, SARITA PRAKASHAN, NAUCHANDI 1969, sponsored by Asian Institute of GROUNDS, MEERUT (U.P.) India) Technology, International Society of SMFE, Coat 125.00 (two volumes), avail­ able from Dr. Za-Chieh Moh. 3)Symposium on Black Cotton Soils, held by College of Military Engineering, Poona, India, May 1969. 6. BULLETIN, NEW MAGAZINE, PROCEEDINGS OR 6. BULLETIN, NEWS MAGAZINE, PROCEEDINGS OR OTHER PUBLICATIONS OTHER PUBLICATIONS

"Journal of the Southeast Asian Society Journal of the National Society, 4 is­ of Soil Engineering" to be published sues per year; in English, to be ordered 1969 hy Asian Institute of Technology from National Society. and Southeast Asian Society of Soil Engi Subscription $4.00 per year. Order from neering. Two issues per year, English, Secretary, National Society, Curzon Road, #3 .00. Order from Secretary, Southeast Barracks, New Delhi, 1 Asian Society. 1. COUNTRY 7. SPECIAL ACTIVITIES AND REMARKS Israel

1. COUNTRY 2. NAME OF SOCIETY India Israel Society of Soil Mechanics and Foundation Engineering 2. NAME OP SOCIETY

Indian National Society of Soil Mechanics 3. OFFICERS OF THE SOCIETY and Foundation Engineering President, J. G. Zeitlen V. President, I. Alpan Honorary Secretary, E. Zolkov 3. OFFICERS OF THE SOCIETY Executive Committee Members: President, Professor Dinesh Mohan, G. Wiseman, A. Komornik, Prof. N. S. Gorinda Rao G. Kassif, B. Aisenstein, Dr. Jagdish Narain Y. Amir, M. Katzir, D. David Members, Dr. S. Prakash Prof. B. V. Rangnathan 4. APPROXIMATE NUMBER OF MEMBERS Dr. V. J. Patel 95 members Secretary, Shi S. N. Gupta 5. MEETINGS OR CONFERENCES

4. APPROXIMATE NUMBER OF MEMBERS a. Without published proceedings

848 Eight various specialty meetings, in members Hebrew, on building foundations, road problems, piles, etc.

5. MEETINGS OR CONFERENCES: b. With published proceedings Third Asian Regional Conference on Soil a. Without published proceedings Mechanics and Foundation Engineering, b. With published proceedings Haifa, 1967. Proceedings available from Dr. G. 1)Symposium on Pore Pressure and Kassif, Israel Institute of Technology. Shearing Strength of Soils, New $30.00 for two volumeB. Delhi, 1967. 6. BULLETIN, NEWS MAGAZINE, PROCEEDINGS OR 2)Symposium on Earth and Rockfill OTHER PUBLICATIONS Dams, Beas Dam Site, Tahoara, Sept. 1968 A Society Journal is in the course of preparation.

68 7. SPECIAL ACTIVITIES AMD REMARKS Cooperation with various bodies as the Association of Engineers and Architects 5. MEETINGS OR CONFERENCES: in Israel and Israel Standards Institute; helped prepare Code of Practice for Building Foundations. a. Without published proceedings b. With published proceedings

1. COUNTRY Still available "Proceedings of Second Asian Regional Conference Japan on Soil Mechanics and Foundation Engineering" $20.00, from Japanese Society 2. NAME OP SOCIETY Annual meetings, plus one or two specialty meetings each year, The Japanese Society of Soil Mechanics published in Japanese» and Foundation Engineering 6. BULLETIN, NEWS MAGAZINE, PROCEEDINGS OR OTHER PUBLICATIONS 3. OFFICERS OF THE SOCIETY "Soils and Foundations" by the Japanese President, Toshieada NAITO Society, 6 issues per year in English; V. President, Masami FUOKOKA 12 issues per year in Japanese. V. President, Hisao NAGAI $ 5.00 per year for English journal. Secretary, Hiroshi MORI 7. SPECIAL ACTIVITIES AND REMARKS

4. APPROXIMATE NUMBER OF MEMBERS Special publications: (in Japanese) J. I. S. (Japan Industrial Standard) Sampling Manual 8,000 local members Manual for Soil Testing 168 international members Manual for Site Investigation

Appendix E Vic»‘Presidentfs Report on Australasian Regional Activités Appendice E Rapport du Vice-Président sur les Activités en Australasia

1 9 6 6 -1 9 6 9 1965-1068

Mr. President, Gentlemen, 2. THE AUSTRALIAN GEOMECHANICS SOCIETY

It iB my pleasure and privilege to present The most pleasing development during my term to you a brief account of the activities of office has been the agreement reached to that have taken place in our National Socie­ establish an Australian GeomechaniCB Society ties of New Zealand and Australia since the from January 1st. 1970. last meeting of the Executive Committee in Montreal in 1965• This Society will be sponsored by the Insti­ tution of Engineers, Australia, and the 1. 5th AUSTRALIAN-NEW ZEALAND CONFERENCE Australasian Institute of Mining and Metal­ ON SOIL MECHANICS AND FOUNDATION ENGI­ lurgy and will coordinate the activities of NEERING 1967. the National Societies of Soil Mechanics and Foundation Engineering and of Rock Mechanics. ThiB, our fifth Regional Conference and It will also sponsor the publication of an undoubtedly the most significant activity Australian Geomechanics Journal, the first during the period under review, was held at isBue of which i B scheduled to appear inmid- Auckland during February 1967. The joint 1970. Together with members of the engineer­ hosts were the University of Auckland and ing geology profeB8ion it is anticipated the New Zealand Institution of Engineers who that active membership of the new society catered for over 200 delegates and associates. will total 400-450.

Professor P. W. Rowe was guest lecturer at 3. PROFESSIONAL ACTIVITIES the conference and addressed delegates on the role of anisotropic fluid flow in the In Australia and in New Zealand there has stability of soil structures. been increasing activity at a national level in the holding of specialiBt symposia and A full account of the conference is given in participation in the preparation of specifi­ the published proceedings which are available cations for methods of test and codes of en­ fro* the New Zealand Institution of Engineers gineering practice. or the Institution of Engineers, Australia. 69 7. SPECIAL ACTIVITIES AMD REMARKS Cooperation with various bodies aa the Association of Engineers and Architects 5. MEETINGS OR CONFERENCES: in Israel and Israel Standards Institute; helped prepare Code of Practice for Building Foundations. a. Without published proceedings b. With published proceedings

1. COUNTRY Still available "Proceedings of Second Asian Regional Conference Japan on Soil Mechanics and Foundation Engineering" $20.00, from Japanese Society 2. NAME OF SOCIETY Annual meetings, plus one or two specialty meetings each year, The Japanese Society of Soil Mechanics published in Japanese» and Foundation Engineering 6. BULLETIN, NEWS MAGAZINE, PROCEEDINGS OR OTHER PUBLICATIONS 3. OFFICERS OF THE SOCIETY "Soils and Foundations" by the Japanese President, Toshieada NAITO Society, 6 issues per year in English; V. President, Masami FUOKOKA 12 issues per year in Japanese. V. President, Hisao NAGAI $ 5.00 per year for English journal. Secretary, Hiroshi MORI 7. SPECIAL ACTIVITIES AND REMARKS

4. APPROXIMATE NUMBER OF MEMBERS Special publications: (in Japanese) J. I. S. (Japan Industrial Standard) Sampling Manual 8,000 local members Manual for Soil Testing 168 international members Manual for Site Investigation

Appendix E Vic»‘Presidentfs Report on Australasian Regional Activités Appendice E Rapport du Vice-Président sur les Activités en Australasia

1966-1969 1 9 6 5 *1 0 6 0

Mr. President, Gentlemen, 2. THE AUSTRALIAN GEOMECHANICS SOCIETY

It iB my pleasure and privilege to present The most pleasing development during my term to you a brief account of the activities of office has been the agreement reached to that have taken place in our National Socie­ establish an Australian GeomechaniCB Society ties of New Zealand and Australia since the from January 1st. 1970. last meeting of the Executive Committee in Montreal in 1965. This Society will be sponsored by the Insti­ tution of Engineers, Australia, and the 1. 5th AUSTRALIAN-NEW ZEALAND CONFERENCE Australasian Institute of Mining and Metal­ ON SOIL MECHANICS AND FOUNDATION ENGI­ lurgy and will coordinate the activities of NEERING 1967. the National Societies of Soil Mechanics and Foundation Engineering and of Rock Mechanics. ThiB, our fifth Regional Conference and It will also sponsor the publication of an undoubtedly the most significant activity Australian Geomechanics Journal, the first during the period under review, was held at isBue of which iB scheduled to appear inmid- Auckland during February 1967. The joint 1970. Together with members of the engineer­ hosts were the University of Auckland and ing geology profeB8ion it is anticipated the New Zealand Institution of Engineers who that active membership of the new society catered for over 200 delegates and associates. will total 400-450.

Professor P. W. Rowe was guest lecturer at 3. PROFESSIONAL ACTIVITIES the conference and addressed delegates on the role of anisotropic fluid flow in the In Australia and in New Zealand there has stability of soil structures. been increasing activity at a national level in the holding of specialiBt symposia and A full account of the conference is given in participation in the preparation of specifi­ the published proceedings which are available cations for methods of test and codes of en­ fro* the New Zealand Institution of Engineers gineering practice. or the Institution of Engineers, Australia.

69 It 1 b now apparent that annual specialist both countries have started from the British ■ympoeia supplemented by more frequent local Standard Specification 1377:1961 but have group meetings have become well established. found it necessary to modify the procedures The symposia generally take the form of two- to suit local conditions. It iB quite ap­ or three day meetings covering a single parent that local soil conditions and geolo& topic. Those held or scheduled in the period continue to play a very important part in en undiar review were: gineering works. ~ NEW ZEALAND The New Zealand National Committee has also been active in preparing a draft Code of "Roading Earthworks" Auckland, Practice for "Compaction of Land for Housing August 1965 and also in preparing a Site Building Regis­ ter. "Site Investijations" Christchurch, August 1965 The Australian National Committee, acting on behalf of the Standards Association of Aus­ tralia has prepared a draft Code of Practice AUSTRALIA for "Site Investigation".

"Site Investigations" Sydney, (Further details of these activities may be November 1966 obtained from the National Society of the country concerned). "Field Measurements" Melbourne, (in conjunction with August 1968 4. MEMBERSHIP Australian Road Research Board Conference). During the period under review the New Zealand Society membership increased from "Rock Mechanics" Sydney, 57 to 133. (in conjurction with the January 1969 Australasian The Australian membership decreased from 406 Institute of Mining and to 331. This decrease is primarily attributed Metallurgy). to the introduction in 1967 of a nominal an­ nual capitation fee when membership fell to below 300 but has since recovered to itB pre Both Nati)nal Societies have been actively sent level. As noted above it is expected the engaged ii preparation of specifications for number will rise with the addition of 100- methodB of test of soils for engineering 120 mining engineers and engineering geolo­ purposes. It is interesting to note that gists to the Australian Geomechanics Society.

Appendix F Report on A ttiviti» in African Region 1965-1969 Appendice F Rapport tur let Actrvrtéi en Afrique 1966-1969

Africa is a large region with only 3 National soils as opposed to the classical thick depo- Societies, South Africa and RhodeBia in the sitional clays of Europe and North America. South and Morocco in the North. In addition, Papers were presented under the five headings regional branches of the Portuguese National of: Society exist in the Provinces of Angola and Terrains Evaluation Mozambique. Communications between many Pedogenic Materials groups within the region is thue complicated ReBidual and Transported Soils by distance and it ie only through a perusal Highways of piibliBhtd literature that a fuller picture General Topics of the oveiall activities in the region can be gained. While therefore thiB report iB and attracted considerable attention, both concerned mainly with the Southern half of from within the region and overseas. Africa, it is evident from the papers accept ed for '.xie 7th ICOSOMEF that valuable research The key note addreBB was delivered by Dr. G. wor^ i.b being done in Ghana and Egypt, neither D. AitchiBon of Australia and an interesting which countries have National Societies. specialty lecture'delivered by E. D'Appolonia of the U.S.A. Overseas delegates came from During the period under review, many symposia and short courses on various aspects of Soil. the United Kingdom, Australia, the U.S.A., Mechanics and Foundation Engineering have been France, Brazil and Portugal while the region held, particulary in South Africa but the was well represented by delegatee from Angola, highlight of the period was undoubtedly the Botswana. Malawi, Mozambique. Rhodesia* South West Africa and the host country,South Africa.. Fourth Regional Conference for Africa, held in Cape Town in December, 1967. The theme of Volume I of the Proceedings contained the for the Conference m i "Soil Forming Processes and mal papers, Volume II the diecuaeione and re­ Aseociated Engineering Problems" a theme of ports of specialty sessions and Volume III, great importance in thie region where the bulk authors repliee to discussions. No formal of our problemB are associated with residual papers were read, morning sessions being de- 70 It 1 b now apparent that annual specialist both countries have started from the British ■ympoeia supplemented by more frequent local Standard Specification 1377:1961 but have group meetings have become well established. found it necessary to modify the procedures The symposia generally take the form of two- to suit local conditions. It is quite ap­ or three day meetings covering a single parent that local soil conditions and geolo& topic. Those held or scheduled in the period continue to play a very important part in en undiar review were: gineering works. ~ NEW ZEALAND The New Zealand National Committee has also been active in preparing a draft Code of "Roading Earthworks" Auckland, Practice for "Compaction of Land for Housing^ August 1965 and also in preparing a Site Building Regis­ ter. "Site Investijations" Christchurch, August 1965 The Australian National Committee, acting on behalf of the Standards Association of Aus­ tralia has prepared a draft Code of Practice AUSTRALIA for "Site Investigation".

"Site Investigations" Sydney, (Further details of these activities may be November 1966 obtained from the National Society of the country concerned). "Field Measurements" Melbourne, (in conjunction with Augpiet 1968 4. MEMBERSHIP Australian Road Research Board Conference). During the period under review the New Zealand Society membership increased from "Rock Mechanics" Sydney, 57 to 133. (in conjurction with the January 1969 Australasian The Australian membership decreased from 406 Institute of Mining and to 331. This decrease is primarily attributed Metallurgy). to the introduction in 1967 of a nominal an­ nual capitation fee when membership fell to below 300 but has since recovered to itB pre Both Nati)nal Societies have been actively sent level. As noted above it is expected the engaged ii preparation of specifications for number will rise with the addition of 100- methodB of test of soils for engineering 120 mining engineers and engineering geolo­ purposes. It is interesting to note that gists to the Australian Geomechanics Society.

Appendix F Report on A ttiviti» in African Region 1965-1969 Appendice F Rapport tur I« Activrtfe en Afriqua 1966-1969

Africa is a large region with only 3 National soils as opposed to the classical thick depo- Societies, South Africa and RhodeBia in the sitional clays of Europe and North America. South and Morocco in the North. In addition, Papers were presented under the five headings regional branches of the Portuguese National of: Society ex let in the Provinces of Angola and Terrains Evaluation Mozambique. Communications between many Pedogenic Materials groups within the region is thus complicated ReBidual and Transported Soils by distance and it is only through a perusal Highways of piibliBhtd literature that a fuller picture General Topics of the oveiall activities in the region can be gained. While therefore thiB report ie and attracted considerable attention, both concerned mainly with the Southern half of from within the region and overseas. Africa, it is evident from the papers accept ICOSOMEF ed for '.xie 7th that valuable research The key note addresB was delivered by Dr. G. wor^ i.s being done in Ghana and Egypt, neither D. Aitchieon of Australia and an interesting which countries have National Societies. specialty lecture'delivered by E. D'Appolonia of the U.S.A. Overseas delegates came from During the period under review, many symposia and short courses on various aspects of Soil. the United Kingdom, Australia, the U.S.A., Mechanics and Foundation Engineering have been France, Brazil and Portugal while the region held, particulary in South Africa but the was well represented by delegates from Angola, highlight of the period was undoubtedly the Botswana. Malawi, Mozambique. Rhodesia. South West Africa and the host country,South Africa.. Fourth Regional Conference for Africa, held in Cape Town in December, 1967. The theme of Volume I of the Proceedings contained the for the Conference m i "Soil Forming Processes and mal papers, Volume II the discussions and re­ Associated Engineering Problems" a theme of ports of specialty sessions and Volume III, great importance in this region where the bulk authors repliee to discussions. No formal of our problemB are associated with residual papers were read, morning sessions being de­ 70 voted to panel and floor discussions of each Bection of the conference while lively Spe­ At the conclusion of the Conference, the in­ cialty Session panels were held during the vitation to hold the 5th Regional Conference afternoons. Special efforts were made to in Luanda, Angola in 1971 was unanimously ac­ publish early and Volume I was available for cepted as was the election of Eng. Manuel P. distribution to delegates 5 months prior to Dos Santos, Minister of Public Works for Over the Conference. This helped considerably to eeae Provinces, or Portugal as the incoming the undoubted success of the Conference. Vice-President.

Appendix G Vice-President's Report on North Amvica Activities Appendice G Rapport du Vice-Président tur les Activités en Amérique 1 9 6 6 -1 9 6 9 du Nord 1965-1969

INTRODUCTION Conference and can report that the Conference was quite successful and instructive. In all Early in 1966 considerable correspondence be­ about 190 engineers were present from eleven gan with President Bjerrum, the Secretary (Jen different countries. Reports from the A ft M eral, the Mexican Organizing Committee, the Conference should insure the success of the National Committees of Canada, Mexico and the Specialty Session at Mexico City. United States and various individuals in North America interested in arrangements for the VII In November 1967 correspondence was initiated Congress. I shall mention only a few of the between Dr. Moretto and myself concerning the ■ore pertinent items of this correspondence. organization of National Committees in the several Central American Countries. While PERTINENT CORRESPONDENCE these countries are a part of North America there exists a language barrier. The Third Pan-American Conference was held in Caracas)Venezuela in July; 1967. Subsequent This barrier was no problem to Dr. Moretto to thiB Conference correspondence was initia_t and in addition he was much more familiar ed between Vice-President Moretto of South with engineering organizations in these coun America, the United States National Committee tries than I; in consequence, I suggested to Dr. Moretto that he proceed to help these and myself. The results were that San Juan, countries organize National Committees so Puerto Rico was selected as the site for the that if they deBired they could later become Fourth Pan American Conference to be held in 1971.The United States proceeded to issue an affiliated with the International Society. I invitation to the Secretary General for the told Dr. Moretto that the other North Ameri­ can National Committees and I would help in International Executive Committee to hold its two year interim meeting at San Juan, in 1971. any way that we could. It was tentatively agreed between Dr. Moretto and myself that I had considerable correspondence with numer a Central American National Committee, upon ous North American engineers concerning the being admitted a member of the International Society, could become affiliated with either invitational Conference on the Shear Strength of Natural Soils and Rocks held at Oslo, North or South America according to its de­ Norway in Sept. 1967. In ally 14 North Amer­ sires. Dr. Moretto has had a considerable icans attended this Conference. degree of success in his efforts and he will report upon this in greater detail. We agreed In late 1966 and early 1967^1 contacted the that the Central American problem should be National Committees concerning the organiza­ placed on the agenda of the Executive Commit tion of an International Research Center. tee meeting in Mexico City. Primarily because of coBt the North American In May 1968 the paper quotas between Canada, National CommitteeB were negative to such an Mexico and the United States were agreed upon organization. and this information was furnished to the Mexican Organizing Committee and the Secre­ Early in 1967 heavy correspondence began con­ tary General. cerning numerous proposed Specialty Confer­ ences to be held at the VII Congress in Mexi­ As Vice President I was asked to coordinate co City. I was able to assist in the coordi­ North American papers to be submitted to the nation of several of these. International Symposium on Land Subsidence to be held in Tokyo, Japan in Sept. 1969. I Some confusion developed in organizing the asked the North American National Commitees Second International Conference on Clay Soils to assist and in all 22 papers have been ac­ to be held at Texas AAM University, College cepted for the Conference. Undoubtedly a Station, Texas, during the week prior to the good representation from North America will VII Congress in Mexico City. It was agreed attend the Conference. that the Conference would be held at Texas A I M University, but that there would be one At the request of the Secretary General early Specialty SeaBion at Mexico City on the same in 1969, I checked into the matter of the subject matter. At the Specialty Session, next Vice President for North America. I found Prof. Zeitlen would report the results or the that a rotation system was being followed be Texas A i M Conference with Prof. Jennings tween the three countries of North America presiding. I was present at the Texas A 4 M and that Canada was entitled to the next Vice

71 voted to panel and floor discussions of each Bection of the conference while lively Spe­ At the conclusion of the Conference, the in­ cialty Session panels were held during the vitation to hold the 5th Regional Conference afternoons. Special efforts were made to in Luanda, Angola in 1971 was unanimously ac­ publish early and Volume I was available for cepted as was the election of Eng. Manuel P. distribution to delegates 5 months prior to Dos Santos, Minister of Public Works for Over the Conference. This helped considerably to eeae Provinces, or Portugal as the incoming the undoubted success of the Conference. Vice-President.

Appendix G Vics-President*! Report on North Amvica Activities Appendice G Rapport du Vice-Président tur les Activités en Amérique 1 9 6 6 -1 9 6 9 du Nord 1965-1969

INTRODUCTION Conference and can report that the Conference was quite successful and instructive. In all Early in 1966 considerable correspondence be­ about 190 engineers were present from eleven gan with President Bjerrum, the Secretary (Jen different countries. Reports from the A ft M eral, the Mexican Organizing Committee, the Conference should insure the success of the National Committees of Canada, Mexico and the Specialty Session at Mexico City. United States and various individuals in North America interested in arrangements for the VII In November 1967 correspondence was initiated Congress. I shall mention only a few of the between Dr. Moretto and myself concerning the ■ore pertinent items of this correspondence. organization of National Committees in the several Central American Countries. While PERTINENT CORRESPONDENCE these countries are a part of North America there exists a language barrier. The Third Pan-American Conference was held in Caracas)Venezuela in July; 1967. Subsequent This barrier was no problem to Dr. Moretto to thiB Conference correspondence was initia_t and in addition he was much more familiar ed between Vice-President Moretto of South with engineering organizations in these coun America, the United States National Committee tries than I; in consequence, I suggested to Dr. Moretto that he proceed to help these and myself. The results were that San Juan, countries organize National Committees so Puerto Rico was selected as the site for the that if they deBired they could later become Fourth Pan American Conference to be held in 1971.The United States proceeded to issue an affiliated with the International Society. I invitation to the Secretary General for the told Dr. Moretto that the other North Ameri­ can National Committees and I would help in International Executive Committee to hold its two year interim meeting at San Juan, in 1971. any way that we could. It was tentatively agreed between Dr. Moretto and myself that I had considerable correspondence with numer a Central American National Committee, upon ous North American engineers concerning the being admitted a member of the International Society, could become affiliated with either invitational Conference on the Shear Strength of Natural Soils and Rocks held at Oslo, North or South America according to its de­ Norway in Sept. 1967. In ally 14 North Amer­ sires. Dr. Moretto has had a considerable icans attended this Conference. degree of success in his efforts and he will report upon this in greater detail. We agreed In late 1966 and early 1967^1 contacted the that the Central American problem should be National Committees concerning the organiza­ placed on the agenda of the Executive Commit tion of an International Research Center. tee meeting in Mexico City. Primarily because of coBt the North American In May 1968 the paper quotas between Canada, National CommitteeB were negative to such an Mexico and the United States were agreed upon organization. and this information was furnished to the Mexican Organizing Committee and the Secre­ Early in 1967 heavy correspondence began con­ tary General. cerning numerous proposed Specialty Confer­ ences to be held at the VII Congress in Mexi­ As Vice President I was asked to coordinate co City. I was able to assist in the coordi­ North American papers to be submitted to the nation of several of these. International Symposium on Land Subsidence to be held in Tokyo, Japan in Sept. 1969. I Some confusion developed in organizing the asked the North American National Commitees Second International Conference on Clay Soils to assist and in all 22 papers have been ac­ to be held at Texas AAM University, College cepted for the Conference. Undoubtedly a Station, Texas, during the week prior to the good representation from North America will VII Congress in Mexico City. It was agreed attend the Conference. that the Conference would be held at Texas A 4 M University, but that there would be one At the request of the Secretary General early Specialty SeaBion at Mexico City on the same in 1969, I checked into the matter of the subject matter. At the Specialty Session, next Vice President for North America. I found Prof. Zeitlen would report the results or the that a rotation system was being followed be Texas A 4 M Conference with Prof. Jennings tween the three countries of North America presiding. I was present at the Texas A 4 M and that Canada was entitled to the next Vice

71 President. The Canadian National Committee waB contacted and asked to choose an engineer In the following paragraphs I shall briefly for Vice President and communicate this in­ describe the activities of the three National formation to the Secretary General. Dr. D. H. Commi ttees. MacDonald was choBen. CANADIAN NATIONAL COMMITTEE In the early Spring of 1969 the Secretary The table below illustrates the activities in General furnished me a copy of a proposed Constitution and By-laws for the Society and Canada since 1965. It will be noted that the asked that if I had any corrections they be three National Conferences in Soil Mechanics furnished him at an early date; this was done. have been published in the Canadian Geotech- nical Journal and the Proceedings of the other Conferences are issued as technical memoranda of the Associate Committee on Geo- NATIONAL COMMITTEE ACTIVITIES technical Research.

Conference Place Date Theme

Twelfth Muskeg Research Enviromental Analysis; Conference Calgary 19-20 May 1966 Access and Terradynam- ics; Exploitation

Nineteenth Canadian Soil Mechanics Conference Vancouver 6-8 October 1966 Earth Dams

Conference on Ice Pressures Action of Ice on Engi- Against Structures Quebec 10-11 November 1966 neering Structures

TwentiethCanadian Soil Shear Strength and Con Mechanics Conference Quebec 14-15 September 1967 solidation of Sensitive Clay

Twenty-First Canadian Soil Structure Performance Mechanics Conference Winnipeg 12-13 September 1968 Related to Soil Environ ment

Third Canadian Conference Permafrost Problems on Permafrost Calgary 14-15 January 1969 Related to Mining and Oil and Gas Production Industries

UNITED STATES NATIONAL COMMITTEE 6. Seminar on Hillside Development, Los An­ Conferences, seminars and symposia held in geles Section, ASCE, May 11, 1966. the United States Bince 1965 are listed below: .. 7. ASCE Water Resources Engineering Confe­ rence, Denver, May 16-20, 1966: sessions on 1. Lecture series: Foundations in Variable Earth and Rockfill Dams, Shale Pipe Instal­ Soils, University of Wisconsin, Oct. 13 » lation and Backfill Procedures, Rock Mechan­ 1965, Nov. 10, 1965, Jan. 12, 1966, Feb. 9, ics • 1966. 8. Program on Geological Engineering, 2. Lecture series on the Design and Construe University of California at Berkeley, August tion of Earth Structures, Chicago, Feb. 16, 15-20, 1966. Mar. 9, Mar. 30, April 20, May 11, 1966. 9. ASCE Specialty Conference on Stability 3. Seminar in Problems in the Evaluation of and Performance of Slopes and Embankments, Pile Foundations, Metropolitan (New York) Berkeley, August 22-26, 1966. Section, ASCE, April 12-13, May 10-11, 1966. 10. Conference on Earth Embankments and Back­ 4. Third Annual Symposium on Oil Shale, fill Adjacent to Structures, Montana State Denver, April 14-15, 1966. University and Montana Section, ASCE, Nov. 4-5, 1966. 5. First International Conference on Marine Geotechnique, University of Illinois, May 1-4 11. Second Annual American Water Resources 1966. Conference, Chicago, Nov. 20-22, 1966.

72 3 1 12. F . Session on Testing Soils at High Pressurn ourth Paving Conference, University of ASTM Annual Meeting, Atlanta, Liept. 23- Oct. New Mexico, Dec. 8-9, 1966. A, 1968. 13. Seminar Series, Pittsburgh Section, ASCE, 32. Symposium on Effects of Temperature ani 4 seminars, Feb., Mar., 1967: sessions on Heat on the Lngineering Behavior of Soil, Shallow Foundations, Foundations in Deep Ex­ Highway Research Board Meeting, Jan. I^bg. cavations, Deep Foundations, Geologic Aspects 33- ASCE National Meeting on Water Resources of Foundation Engineering. Engineering, New Orleans, Feb. 3-7, 191>9: Sessions on Grouting, Engineering Geology, 14. Fourth Annual Symposium on Oil Shale, Earth Dams, Soil Mechanics Research, and Deep Denver, April 6-7, 1967. P'oundations and Retaining Structures. 15. Seminar on Construction Dewatering and 34. Seventh Annual Symposium on Engineering Pressure-Relief Techniques, Metropolitan Geology and Soils Engineering, University of (New York) Section, ASCE, Apr. 11-12, and Idaho, April 9-11, 1969. May 9-10, 1967. 35. Course on Prediction and Measurement of 16. Eighteenth Annual Highway Geology Stresses and Deformations in Soils, M.I.T., sium, Purdue University and Indiana State August 18-22, 1969. Highway Commission, April 20-21, 1967. It will be noted that the American Society of 17. ASCE Structural Engineering Conference, Civil Engineers (ASCE), the Highway Research Seattle, May 8-12, 1967: Sessions on Founda­ Board (HRB), the American Society of Testing tions, Grouting, and Permafrost. Materials (ASTM), Universities and other groups have contributed in the soil mechanics 18. ASCE Seminar on Seismic Design, Seattle, field. All papers are documented in Proceed May 12-13, 1967. ings of the Society involved or in the publT 19 cation of individual symposia or papers. The . Symposium on Wave Propagation and Dynamic following is a tabular grouping of the con­ Properties of Earth Materials, ASCE and Uni­ ferences. versity of New Mexico, August 23-25» 1967. ORGANIZATION N? OF CONFERENCES 20. Course on Finite Element Methods in Soil Mechanics, M.I.T., August 28- Sept. 1, 1967. University Short Courses 15

21. Joint Soil Mechanics Colloquium, Chicago, Seminars and Symposia by ASCE and Oct. 4 and Nov. 8, 1967, Mar. 4, April 15 and other groups 12 24, and May 2 and 22, 1968. National Specialty Conferences, 22. Soil and Foundation Seminar, National Soil Mechanics & Foundation Capital Section, ASCE, Jan, 23, 1968, Feb. Division, ASCE 2 6-27, 1968. ASCE National Conferences with 3 23 . Symposium on Stress-Deformation-Pore Pres Soil Mechanics Sessions 6ure Behavior of Soils, Cornell University, ASTM Annual Meetings with Soil Jan. 25-26, 1968. Mechanics Sessions 3

24. State-of-the Art Symposium on Earthquake Attention is directed to items 9 and 30 in Engineering of Buildings, San Francisco, Feb. the tabulated list. These are three to four 5-6, 1968. day conferences devoted entirely to soil mechanics papers and discussions and are 25. Course on Recent Developments in the sponsored by the Soil Mechanics and Founda­ Design and Construction of Earth and Rockfill tion Division (SMFD) Executive Committee, Dams, University of California at Berkeley, ASCE. All the papers of these two ¡specialty Mar. 18-23, 1968. Conferences as well as all soil mechanics pa pers of the ASCE National Conferences are pub 26. Course on Vibrations of Soils and Founda lished in the Soil Mechanics and Foundations tions, University of Michigan, June 3-14, Division Journal, ASCE. This Journal is pub 1968. lished at two-month intervals. 27. Course on Recent Advances in Soil Meehan ics, UCLA, June 10-14, 1968. The following are some further activities of 'ie Soil Mechanics and Foundations Division 28. Symposium on Deep Foundations, ASTM An­ Executive Committee, which also serves as the nual Meeting, San Francisco, June 24, 1968. 'jnited States National Committee:

29. Symposium on Earthquake and Vibration 1. Established International Abstracts Effects on Soils, ASTM Annual Meeting, San Section in SMFD Journal. Francisco, June 25, 1968. 2. Cooperation with Germany in establishing International Geotechnical Abstracts. 30. ASCE Specialty Conference on Placement and Improvement of Soil to Support Structures, 3 . Established Research Council on Expansive Y. I. T., August 26-28, 1968. SoiIs.

73 4. Cooperation with Construction Division The Officers of the Society as of 1969 until ASCE in establishing Council on Rapid Tunnel­ 1970 are: ling. Dr. R. J. Marsal President The SMFD has the following active sub-commit­ Mr. C. L. Flamand Vice President tees: Mr. E. Soto Secretary Mr. M. Ruiz Treasurer 1. Awards 2. Continuing Education The approximate number of members: 189; an 3. Publications increase in membership of approximately 50$ 4. Definition of Standards related to the last period. 5. Research The meetings or conferences, with full or par 6. Sessions Program Planning tial sponsorship of the Society were: 7. Computer Applications 8. Deep Foundations 1. The Firt International Conference on Deep 9. Retaining Structures Foundations was held in November 1964. The 10. Embankment Dams and Slopes Mexican Society had in this case the collab£ 11. Engineering Geology ration of the A.S.C.E. and the Committee D- 12. Grouting 18 of the A.S.T.M. Proceedings are still 13. Information Retrieval available at $16.00 (two volumes), in English 14. Performance of Earth Supported Structures and Spanish. 15. Rock Mechanics 2. The VII International Conference on Soil 16. Soil Dynamics Mechanics and Foundation Engineering.- August 17. Soil Properties 1969. Proceedings are available at a cost of 18. Placement and Improvement of Soils. $40.00, including surface postage charges. The above committees are responsible for pr£ A bi-monthly bulletin in Spanish with the paring papers on the various subject matter. Society's activities is distributed among the Some special reports are published as illus­ members and is also sent to all the National trated by the following. Societies. This bulletin was first published 1. Special volume on Information Retrieval, in 1969. in September 1967 Journal. Special Activities consisted of a plan of Soil Mechanics' Lectures which has been de­ 2. Special report on Continuing Education veloped during the 1969 class period at the 3. Special report on Consulting Practice State Universities. At present, a review and up to date version A Terzaghi Lecture is presented annually by of the Society's Statutes is being developed. a distinguished member of the soil mechanics profession as a special highlight of the An­ In addition to the above the Mexican Society nual ASCE Meeting. The SMFD also cooperates has had the continuous burden of assisting with other groups in supporting special con­ ferences on soil mechanics. in organizing the VII Congress; in this they deserve all our congratulations. MEXICAN NATIONAL COMMITTEE The following is a report of the Mexican Society of Soil Mechanics.

Append ix H Vice-President's Report on South America Appondioe H Rapport du Vice-Président en Amérique du Sud

The Panamerican Congress which is now held DiviBion I Physical and Chemical Properties every four years in between International of the Soils, Field and Laboratory Investiga­ Conferences as a joint venture of the North tions. and South American zones is considered by South America as the most important event of Division II Shallow Foundations. Deep Foun­ its own region. dations without the Use of Pil°s. Pile Foun­ dations. Others. In 1967, the Third Panamerican Congress was held in Caracas, Venezuela, with the Socie­ dad Venezolana de Mecánica de Suelos e Inge­ Division III Earth and Rock-fill Dams. Earth niería de Fundaciones acting as organizer and Rocks Structures other than Çams, High­ and host. It was an extremely successful ways and Airports. Open Excavations. Applied Geology. conference and their Proceedings were publish ed in three volumes written in English and ~ Division IV Earth Pressure. Retaining Walls. Spanish. They are on sale at the Venezuelan Sheet Piling. Society of Soil Mechanics mentioned above and were advertised in various sources including Division V The Evaluation of Soil Mechanics the news sections of Geotechnique and the in America. Census of Research Centers and A.S.C.E. Soils Division. The CongreBB cover­ their Programs. The Teaching of Soil Mechan­ ed the following subjects: ics in America.

74 4. Cooperation with Construction Division The Officers of the Society as of 1969 until ASCE in establishing Council on Rapid Tunnel­ 1970 are: ling. Dr. R. J. Marsal President The SMFD has the following active sub-commit­ Mr. C. L. Flamand Vice President tees: Mr. E. Soto Secretary Mr. M. Ruiz Treasurer 1. Awards 2. Continuing Education The approximate number of members: 189; an 3. Publications increase in membership of approximately 50$ 4. Definition of Standards related to the last period. 5. Research The meetings or conferences, with full or par 6. Sessions Program Planning tial sponsorship of the Society were: 7. Computer Applications 8. Deep Foundations 1. The Firt International Conference on Deep 9. Retaining Structures Foundations was held in November 1964. The 10. Embankment Dams and Slopes Mexican Society had in this case the collab£ 11. Engineering Geology ration of the A.S.C.E. and the Committee D- 12. Grouting 18 of the A.S.T.M. Proceedings are still 13. Information Retrieval available at $16.00 (two volumes), in English 14. Performance of Earth Supported Structures and Spanish. 15. Rock Mechanics 2. The VII International Conference on Soil 16. Soil Dynamics Mechanics and Foundation Engineering.- August 17. Soil Properties 1969. Proceedings are available at a cost of 18. Placement and Improvement of Soils. $40.00, including surface postage charges. The above committees are responsible for pr£ A bi-monthly bulletin in Spanish with the paring papers on the various subject matter. Society's activities is distributed among the Some special reports are published as illus­ members and is also sent to all the National trated by the following. Societies. This bulletin was first published 1. Special volume on Information Retrieval, in 1969. in September 1967 Journal. Special Activities consisted of a plan of Soil Mechanics' Lectures which has been de­ 2. Special report on Continuing Education veloped during the 1969 class period at the 3. Special report on Consulting Practice State Universities. At present, a review and up to date version A Terzaghi Lecture is presented annually by of the Society's Statutes is being developed. a distinguished member of the soil mechanics profession as a special highlight of the An­ In addition to the above the Mexican Society nual ASCE Meeting. The SMFD also cooperates has had the continuous burden of assisting with other groups in supporting special con­ ferences on soil mechanics. in organizing the VII Congress; in this they deserve all our congratulations. MEXICAN NATIONAL COMMITTEE The following is a report of the Mexican Society of Soil Mechanics.

Append ix H Vice-President's Report on South America A p p e n d i« H Rapport du Vice-Président en Amérique du Sud

The Panamerican Congress which is now held DiviBion I Physical and Chemical Properties every four years in between International of the Soils, Field and Laboratory Investiga­ Conferences as a joint venture of the North tions. and South American zones is considered by South America as the most important event of Division II Shallow Foundations. Deep Foun­ its own region. dations without the Use of Pil°s. Pile Foun­ dations. Others. In 1967, the Third Panamerican Congress was held in Caracas, Venezuela, with the Socie­ dad Venezolana de Mecánica de Suelos e Inge­ Division III Earth and Rock-fill Dams. Earth niería de Fundaciones acting as organizer and Rocks Structures other than Çams, High­ and host. It was an extremely successful ways and Airports. Open Excavations. Applied Geology. conference and their Proceedings were publish ed in three volumes written in English and ~ Division IV Earth Pressure. Retaining Walls. Spanish. They are on sale at the Venezuelan Sheet Piling. Society of Soil Mechanics mentioned above and were advertised in various sources including Division V The Evaluation of Soil Mechanics the news sections of Geotechnique and the in America. Census of Research Centers and A.S.C.E. Soils Division. The CongreBB cover­ their Programs. The Teaching of Soil Mechan­ ed the following subjects: ics in America.

74 The next Panamerican Congress will be organ­ I _ Physical and mechanical properties of ized by the U. S. Soil Mechanics Committee soil under the auspices of the A.S.C.E. and will be held in San Juan, Puerto Rico in 1971. II- Experiences with local soils

Prior to the Conference a one-week Panameri­ III- Foundations can course on soil mechanics was held at the Universidad Católica Andrés Bello, during IV - Earth Dams which the following subjects were covered: After the meeting an accelerated course on "Behaviour of saturated clays","Engineering earth dam engineering was given at the Geology Applied to Dams", "Behaviour of Granu Engineering School of the University of lar soils", and "Criteria in the Design of Litoral in Rosario. This lecture course, Foundation". Notes were provided by the lec­ which was attended by over 100 people was turers and made available to all participants given by three specialists from Argentina to the Congress. and Brazil. Three of the National Societies in the region held conferences in their own countries with a few participants from neighboring nations. The Venezuelan Society on Soil Mechanics has continued to publish its quarterly bulletin. Brazil held its Third Congress on Soil Meehan This iB directed towards readers in all Span ics in Belo Horizonte in July 1966 during ish speaking countries and others are warmly which the following topics were considered: invited to subscribe to it. Publications in English and French are contemplated and papers 1. PROPERTIES OP SOILS.- Comparison between in these languages are also welcome. laboratory tests and observation of real structures By suggestion of the Mexican Committee in agreement with the Vice+President for North 2. TEACHING AND RESEARCH.- Post graduate America and with approval of the President courses in Brazil of the International Society, the Vice-r-Pre- sident for South America undertook a drive to 3. DIRECT FOUNDATIONS.- Allowable stresses promote the formation of new national commit through different correlations tees in Central America and in those coun­ tries of South America that are not members 4. DEEP FOUNDATIONS.- Problems in the exe­ of the International Society. For that pur­ cution of deep foundations pose a letter was Bent to fifteen national organizations belonging to the Panamerican 5. EARTH AND ROCKFILL DAMS AND THEIR FOUN­ Union of Engineers stating the purpose of our DATIONS.- Treatment of dam foundations Society, pointing out the benefits that can be derived from affiliation and inviting them 6. EARTH PRESSURE IN TEMPORARY AND PERMANENT to establish a local committee in keeping SUPPORTS.- Stability of slopes with the statutes of the International Society. 7. HIGHWAYS.- Pavement behaviour as function of design A copy of the statutes was enclosed and sug­ gestions were made about two possible types 8. ROCK MECHANICS.- Rock excavation with of committees: a national, attached to the explosives and its problems. local engineers organization, like the U.S. National Committee, or an independent socie­ Ecuador had its First Soil Mechanics Confe­ ty, like those of Argentina, Brazil, Mexico, rence held in Guayaquil in November 1967 etc. during which the following subjects were di£ cussed: At first, the response was not encouraging. However, some personal contacts showed that Division I Physical and mechanical proper­ it was not because of lack of interest. There ties of soils.- Laboratory and field inves­ were difficulties to get through all the for tigations malities necessary to set a permanent commiT tee. Therefore, a new circular letter was Division II Spread and deep foundations mailed suggesting that interested engineers be grouped in a temporary association set up Division III Highways and Airports with the purpose of joining the International Society. Division IV Earth Dams - Earth preBSuree- Retaining walls Three countries from South America have orga- Division V Evaluation of soil mechanics in ganized such groups. They are: Chile ( 9 mem Ecuador bers), Paraguay (5), 4 Uruguay (6). Four coun tries from Central America followed the same Argentina for its part had its first meeting procedure. They are: Costa Rica (8), Guatema­ in July, 1968>held at La Plata at the L.E.M. la (9), El Salvador (12) and República Doming I.T. laboratory. The following subjects were cana (26). discussed:

75 e ietB Th l of members of the interested groups Guatemala: were sent to the Organizing Committee of the Emilio Beltranena Matheu VII CIMSIC who included them in the mailing 20 Avenida "A" 0-06, Zona 15 list for information regarding the Mexican Guatemala, GUATEMALA, C. A. Conference. It is to be expected that most of these countries will soon formally join Paraguay: the International Society. Lorenzo Eugenio Codas Estados Unidos N° 785 The following are the names and addresses of Asunción, PARAGUAY the heading the above mentioned groups: Uruguay: Chile: Clara García Médici de Pérez Fernando Martinez Serrano Instituto de Estática Facultad de Ingeniería Fanor Velasco 13 y Agrim. Santiago de Chile, CHILE Herrera y Reissing 565 Montevideo, URUGUAY El Salvador: León Suncin Zelaya: Comité Nacional de Mecán¿ República Dominicana ca de Suelos. JesÚB María Aquino c/o Asociación Salvadoreña de Ingenieros y Calle 37 Este Ene. Luperon Arquitectos. Santo Domingo, REPUBLICA DOMINICANA Final 75a. Ave. Norte San Salvador, EL SALVADOR, C. A.

Coeta Rica: Manrique Laxa Tomas Apartado 2192 San José de Costa Rica, C. A.

Appendix I Report on the Activities of the European National Appendice I Rapport sur les Activités des Sociétés Nationales du Societies 1965-1969 Europe 1965-1969

In May 1969 the European Region lost its Vice- The British Society has continued with President, Prof. Brinch Hansen, and his pre­ its Rankine Lectures. During the last four mature death haB been a great loss to geotech years the distinguished lecturers were: nical science. As Vice-PreBident for Europe oi Professor A. W. Bishop, Dr. Launts Bjerrum, the International Society hie influence and R. Glossop and Professor R. B. Peck who res­ authority were very considerable. pectively treated the following problems: "The strength of soils as engineering mate­ The number of European National Societies has rials"; '■'•Engineering Geology of normally con­ increased by one with the admission of Greeca solidated marine clays as related to settle­ The number of members of the European Socie­ ments of buildings*; "The rise of geotechnolo ties has remained nearly constant, at about gy and its influence on engineering practic?) 4,500. However the membership of several coun "Advantages and limitations of the observa­ trieB substantially increased, while has fora tional method in applied soil mechanics". few it has rather considerably decreased. I have only little information concerning the During May, 1969, the British Geotechni- normal activities of the national societies, cal Society also organized a conference on although I know that most of them have regu­ "In-Situ Investigations in Soils and RockB". larly organized meetings in which particular subjects have been treated by national or or The Journal "Geotechnique", which arose foreign speakers. from the initiative of the British Society besides these normal activities several soci£ many years ago, has considerably grown in ties have taken special initiatives which are volume. In 1968 this publication contained worthwhile mentioning in this report. more than 515 pages against 415 in 1965. The firBt of these is the European Conference on the shear strength properties of natural The Hungarian Society contributed at the soils and rocks organized by the Norwegian organization of the Third Budapest Conference Society and held in Oslo in September T967. on Soil Mechanics and Foundation Engineering, The following topics were included: Shear which was held in October 1968. The topics Strength of Soft Clay; Shear Strength of Stiff of this conference were^'The physical chara£ Clay; Shear Strength of Soils other than Clay teristics of soils"; "Bracing and dewatering and Shear Strength of Rocks. The organization of foundation pits" and "Design of deep foun of this conference, which was attended by 330 dations". The reports have been published in persons, was remarkably fine and the Proce­ a volume of 686 pages. edings containing 609 pages, constitute a valuable document. As in the past the German Society "Deutsche Gesellschaft fUr Erd-und r’.rur:dbau" organized its "Baugrundtagungen" which were respectively held at Munich in 1966 and 76 The lietB of members of the interested groups Guatemala: were sent to the Organizing Committee of the Emilio Beltranena Matheu VII CIMSIC who included them in the mailing 20 Avenida "A" 0-06, Zona 15 list for information regarding the Mexican Guatemala, GUATEMALA, C. A. Conference. It is to be expected that most of these countries will soon formally join Paraguay: the International Society. Lorenzo Eugenio Codas Estados Unidos N° 785 The following are the names and addresses of Asunción, PARAGUAY the heading the above mentioned groups: Uruguay: Chile: Clara García Médici de Pérez Fernando Martinez Serrano Instituto de Estática Facultad de Ingeniería Fanor Velasco 13 y Agrim. Santiago de Chile, CHILE Herrera y Reissing 565 Montevideo, URUGUAY El Salvador: León Suncin Zelaya: Comité Nacional de Mecán¿ República Dominicana ca de Suelos. JesÚB María Aquino c/o Asociación Salvadoreña de Ingenieros y Calle 37 Este Ene. Luperon Arquitectos. Santo Domingo, REPUBLICA DOMINICANA Final 75a. Ave. Norte San Salvador, EL SALVADOR, C. A.

Coeta Rica: Manrique Lara Tomas Apartado 2192 San José de Costa Rica, C. A.

Appendix I Report on the Activities of the European National Appendice I Rapport sur les Activités des Sociétés Nationales du Societief 1965-1969 Europe 1965-1969

In May 1969 the European Region lost its Vice- The British Society has continued with President, Prof. Brinch Hansen, and his pre­ its Rankine Lectures. During the last four mature death haB been a great loss to geotech years the distinguished lecturers were: nical science. As Vice-PreBident for Europe oi Professor A. W. Bishop, Dr. Launts Bjerrum, the International Society hie influence and R. Gloseop and Professor R. B. Peck who res­ authority were very considerable. pectively treated the following problems: "The strength of soils as engineering mate­ The of European National Societies has number rials"; '■'•Engineering Geology of normally con­ increased by one with the admission of Greeca solidated marine clays as related to settle­ The number of members of the European Socie­ ments of buildings*; "The rise of geotechnolo ties has remained nearly constant, at about gy and its influence on engineering practic?) 4,500. However the membership of several coun "Advantages and limitations of the observa­ trieB has substantially increased, while fora tional method in applied soil mechanics". few it has rather considerably decreased. I have only little information concerning the During May, 1969, the British Geotechni- normal activities of the national societies, cal Society also organized a conference on although I know that most of them have regu­ "In-Situ Investigations in Soils and RockB". larly organized meetings in which particular subjects have been treated by national or or The Journal "Geotechnique", which arose foreign speakers. from the initiative of the British Society besides these normal activities several soci£ many years ago, has considerably grown in ties have taken special initiatives which are volume. In 1968 this publication contained worthwhile mentioning in this report. more than 515 pages against 415 in 1965. The firBt of these is the European Conference on the shear strength properties of natural The Hungarian Society contributed at the soils and rocks organized by the Norwegian organization of the Third Budapest Conference Society and held in Oslo in September T967. on Soil Mechanics and Foundation Engineering, The following topics were included: Shear which was held in October 1968. The topics Strength of Soft Clay; Shear Strength of Stiff of this conference were^'The physical chara£ Clay; Shear Strength of Soils other than Clay teristics of soils"; "Bracing and dewatering and Shear Strength of Rocks. The organization of foundation pits" and "Design of deep foun of this conference, which was attended by 330 dations". The reports have been published in persons, was remarkably fine and the Proce­ a volume of 686 pages. edings containing 609 pages, constitute a valuable document. As in the past the German Society "Deutsche Gesellschaft fUr Erd-und Grundbau" organized its "Baugrundtagungen" which were respectively held at Munich in 1966 and 76 Hamburg in 1968. The reports presented at "Pore pressures measurements", "Stability these meetings have also been published. They of slopes", "Stabilization of soils" and always contain very valuable information for "Investigation concerning frost damage". The the profession. reports have been published in a volume of 274 pages. At that occasion the honorary The German Society ia going on with its degree of the Technische Hochschule of Vienna splended initiative concerning the documenta was conferred on Prof. Casagrande, who dona^ tion abstracts (Dokumentation Uber Boden­ ed a bust of Prof. Terzaghi to the Institute. mechanik und Grundbau). In 1965 the Swedish Geotechnical Institute submitted a proposal In November of this year an internation­ to publish a geotechnical abstracts journal. al symposium on civil engineering structures In 1967 the Swedish Geotechnical Institute on soils and rocks will be organized by found it necessary to withdraw its offer to the Academy of Sciences at the University of publish this abstracts journal. An invitation Sarajevo in Yugoslavia. The themes are as has been extended to the German Society for follows: "Experimental and theoretical invest Soil Mechanics to investigate the possibility igations"; "Methods of calculation of pressure of providing this service and the German distributions"; "Practical applications". Society kindly accepted the invitation. A proposal will be presented by the German The Czechoslovak Institute will or­ Society for the publication of a journal cal­ ganize in October of this year a conference led Geotechnical Abstracts. A specimen issue on "New Advances in Soil Mechanics" on the has already been presented to the members of occasion of the ceremonial unveiling of a the Executive Committee. memorial tablet on the house where Professor K. Terzaghi was born. The French National Society organized in March 196Ö a colloquium on Giotechnique at The International Society on Rock Toulouse. The topics were: "Determination Mechanics was created in its present form at in the laboratory of physical and mechanical Lisbon in 1966. Although this society is properties of materials", "Determination in different from our international society, it the laboratory of the alteration of" materials"; must be mentioned because the domains of both "Formation of soils by alteration of rocks"; soil mechanics and rock mechanics overlap and "Application to concrete of the methods used many members of the International Society on in mechanical studies of rocks and influence Soil Mechanics are also members of the Inter­ of the properties of the aggregates on the national Society on Rock Mechanics. properties of concrete. This gives rise to the problem of how best A Scandinavian Geotechnical Conference to organize at a national level both interna­ was held in Gothenburg, in September 1968, tional societies. In several countries, for where 200 soils engineers from Denmark, instance Belgium, Spain, France, Portugal, Finland, Norway and Sweden gathered to dis­ and Yugoslavia independent national societies cuss problems of special interest in the on Rock Mechanics have been created. Other Scandinavian countries. countries are still discussing the matter in view of finding the most adequate solution: The Yugoslav National Society organized Germany decided to have an overall group in September 196Ö its Eleventh National Con­ made up of four sections: Soil Mechanics, ference on Soil Mechanics and Foundation Foundation Engineering, Rock Mechanics, and Engineering. Engineering Geology. It must also be mention ed that in the last four years an intemation Under the influence of Prof. Tsytovich, al society on Engineering Geology has been a bi-monthly journal "Bases, Foundations and created and that the first conference on eng^ Soil Mechanics" is now published in Moscow. neering geology was held in Moscow in June It is in Russian with an English translation 1968. of the list of contents. Besides the conferences arranged under the The Swiss Society organizes in the spring premises of affiliated societies^it is dif­ and fall of every year meetings at which the ficult to prevent external groups from orga­ members of the other European Societies are nizing conferences on subjects closely rela^ kindly invited. This Society published also ed to the discipline covered by our interna­ a Lexicon of the technical terms utilized in tional society. For example, the Institution Soil Mechanics and has brought out a new edi­ of Civil Engineers in England organized a tion of the Proceedings of the Third Interna Symposium on Large Bored Piles in 1966 and tional Conference at ZUrich in 1953- has arranged for a conference in London in 1970 on the behaviour of piles. The Spanish The Turkish National Committee organized National Society kindly proposed to organize a symposium on Soil Sampling and Field Tests the next European Conference on Soil Mechan­ in the spring 1969. ics in Madrid in 1971 and this proposal had the agreement of the International Society. The Austrian National Society organized But, (again agreement with the Vice President, in Vienna in May 1968, the "Donau Europäische Professor Brinch Hansen), the Spanish orga - Konferenz" devoted to the theme " Soil Mecha nizing Committee had also selected the prob­ m c s in Road Construction". The topics were lem of pile foundations for the theme of the "!■ oundations", "Settlement calculations", European Conference. This clearly shows how

77 external organizations can affect the activi­ railways. In many European towns large pro­ ties of our International Society. It may be grams of construction or extension of under­ worthwhile that the general aspect of this ground railways and for the building of tun­ problem should be examined by the Executive nels under large waterways are in progress. Committee, so that the attention of the na­ tional societies can be drawn on it.

In general the activities of the European E. de Beer National Societies during the last four years Acting Vice President. have been closely related to the problems of the construction of tunnels and underground

Appendix J Report on the Activities of the Advinry Committee Appendice J Rapport sur ta» activités du Comiti Consultatif

During the Vlth International Conference on In the summer of 1967 the Advisory Committee Soil Mechanics and Foundation Engineering in could make the final ^iproval of the Main Ses Montreal, September 7 - 15, 1965 it was de­ sions, the Specialty Sessions and the various cided that an Advisory Committee consisting details of the procedures; and the task of of the Past^-Presidents, the Vice Presidents the Advisory Committee was then completed. and the President be formed to advise the Organizing Committee for the next intemation The essential features of the Mexico City al conference, to be held in Mexico City in Conference representing a change in the pro­ 1969, on the procedure of the Conference. cedures are as follows:

Following the Montreal Conference the Adviso­ 1. Limitation of scope of Main Sessions to ry Committee received a number of letters a few selected topics of general inter­ from members of the ISSMFE with suggestions est. for improving our future conferences. Based on a study of this material and informal dis­ 2. Replace general report by "State-of-the- cussions with varous members of the Society Art Lectures" a first proposal was worked out for the organ 3- Reduction of number of papers to be in­ ization of the Mexico City Conference. This cluded in proceedings. proposal was circulated to the members of the committee in December 1965, and after the com 4. Introduction of Specialty Sessions. raents had been received, a "Recommendation 5. Elimination of introductory lectures. for Procedures of the Mexico City Conference" was prepared in July 1966. After circulation, 6. Elimination of Closing Session. this recommendation was in September 1966 presented to Professor Tamez of the Mexican In addition a number of changes and modifi­ Organizing Committee, at a meeting in Lisbon. cations in the procedures and conference Professor Tamez should then upon his return programmes have been proposed. to Mexico City arrange a meeting of the Organ izing Committee in which the proposal for the The Advisory Committee would like to express final programme could be established. However, its gratitude to the Organizing Committee of in February 1967 we received the sad news that the Vllth International Conference in Mexico Professor Carrillo, President of the Organizing City in 1969 for its willingness to accept Committee, died on February 19th, and the com and try out the new procedures and for the mittee had to be reorganized. As new president many valuable suggestions received during Professor Tamez was elected, with Dr. Ramirez the cooperation. de Arellano as Secretary- Members of the Advisory Committee: On April 19th and 20th a meeting was held at Harvard University where the procedures of A. W. Skempton the conference were discussed in great detail. A. Casagrande Present at this meeting were Dr. Ramirez de J. Brinch Hansen Arellano, Secretary of the Organizing Com­ J. G. Zeitlen mittee, and Dr. Arthur Casagrande and Dr. B. A. Kantey Laurits Bjerrum from the Advisory Committee.

Appendix K (i) Report of the Sub-committee on Literature Classification Appendice K (i) Rapport du Sous-Comité de Classification de and International Abstracts Service. June 1969 Publications et du Service International des Résumés. Juin 1969

INTRODUCTION nical literature classification system that At the 1965 Montreal Conference the Sub-com­ was the result of many years of work (the Sub­ mittee on Classification of Geotechnical Li­ committee was formally appointed in 1957 but terature submitted a proposal for a geotech- 78 external organizations can affect the activi­ railways. In many European towns large pro­ ties of our International Society. It may be grams of construction or extension of under­ worthwhile that the general aspect of this ground railways and for the building of tun­ problem should be examined by the Executive nels under large waterways are in progress. Committee, so that the attention of the na­ tional societies can be drawn on it.

In general the activities of the European E. de Beer National Societies during the last four years Acting Vice President. have been closely related to the problems of the construction of tunnels and underground

Appendix J Report on the Activities of the Advisory Committee Appendice J Rapport sur ta» activités du Comité Consultatif

During the Vlth International Conference on In the summer of 1967 the Advisory Committee Soil Mechanics and Foundation Engineering in could make the final ^iproval of the Main Ses Montreal, September 7 - 15, 1965 it was de­ sions, the Specialty Sessions and the various cided that an Advisory Committee consisting details of the procedures; and the task of of the Past^-Presidents, the Vice Presidents the Advisory Committee was then completed. and the President be formed to advise the Organizing Committee for the next intemation The essential features of the Mexico City al conference, to be held in Mexico City in Conference representing a change in the pro­ 1969, on the procedure of the Conference. cedures are as follows:

Following the Montreal Conference the Adviso­ 1. Limitation of scope of Main Sessions to ry Committee received a number of letters a few selected topics of general inter­ from members of the ISSMFE with suggestions est. for improving our future conferences. Based on a study of this material and informal dis­ 2. Replace general report by "State-of-the- cussions with varous members of the Society Art Lectures" a first proposal was worked out for the organ 3- Reduction of number of papers to be in­ ization of the Mexico City Conference. This cluded in proceedings. proposal was circulated to the members of the committee in December 1965, and after the com 4. Introduction of Specialty Sessions. raents had been received, a "Recommendation 5. Elimination of introductory lectures. for Procedures of the Mexico City Conference" was prepared in July 1966. After circulation, 6. Elimination of Closing Session. this recommendation was in September 1966 presented to Professor Tamez of the Mexican In addition a number of changes and modifi­ Organizing Committee, at a meeting in Lisbon. cations in the procedures and conference Professor Tamez should then upon his return programmes have been proposed. to Mexico City arrange a meeting of the Organ izing Committee in which the proposal for the The Advisory Committee would like to express final programme could be established. However, its gratitude to the Organizing Committee of in February 1967 we received the sad news that the Vllth International Conference in Mexico Professor Carrillo, President of the Organizing City in 1969 for its willingness to accept Committee, died on February 19th, and the com and try out the new procedures and for the mittee had to be reorganized. As new president many valuable suggestions received during Professor Tamez was elected, with Dr. Ramirez the cooperation. de Arellano as Secretary- Members of the Advisory Committee: On April 19th and 20th a meeting was held at Harvard University where the procedures of A. W. Skempton the conference were discussed in great detail. A. Casagrande Present at this meeting were Dr. Ramirez de J. Brinch Hansen Arellano, Secretary of the Organizing Com­ J. G. Zeitlen mittee, and Dr. Arthur Casagrande and Dr. B. A. Kantey Laurits Bjerrum from the Advisory Committee.

Appendix K (i) Report of the Sub-committee on Litereture Classification Appendice K (i) Rapport du Sous-Comfté de Classification de and International Abstracts Service. June 1969 Publications et du Service International des Résumés. Juin 1969

INTRODUCTION nical literature classification system that At the 1965 Montreal Conference the Sub-com­ was the result of many years of work (the Sub­ mittee on Classification of Geotechnical Li­ committee was formally appointed in 1957 but terature submitted a proposal for a geotech- 78 external organizations can affect the activi­ railways. In many European towns large pro­ ties of our International Society. It may be grams of construction or extension of under­ worthwhile that the general aspect of this ground railways and for the building of tun­ problem should be examined by the Executive nels under large waterways are in progress. Committee, so that the attention of the na­ tional societies can be drawn on it.

In general the activities of the European E. de Beer National Societies during the last four years Acting Vice President. have been closely related to the problems of the construction of tunnels and underground

Appendix J Report on the Activities of the Advinry Committee Appendice J Rapport sur ta» activités du Comité Consultatif

During the Vlth International Conference on In the summer of 1967 the Advisory Committee Soil Mechanics and Foundation Engineering in could make the final ^iproval of the Main Ses Montreal, September 7 - 15, 1965 it was de­ sions, the Specialty Sessions and the various cided that an Advisory Committee consisting details of the procedures; and the task of of the Past^-Presidents, the Vice Presidents the Advisory Committee was then completed. and the President be formed to advise the Organizing Committee for the next intemation The essential features of the Mexico City al conference, to be held in Mexico City in Conference representing a change in the pro­ 1969, on the procedure of the Conference. cedures are as follows:

Following the Montreal Conference the Adviso­ 1. Limitation of scope of Main Sessions to ry Committee received a number of letters a few selected topics of general inter­ from members of the ISSMFE with suggestions est. for improving our future conferences. Based on a study of this material and informal dis­ 2. Replace general report by "State-of-the- cussions with varous members of the Society Art Lectures" a first proposal was worked out for the organ 3- Reduction of number of papers to be in­ ization of the Mexico City Conference. This cluded in proceedings. proposal was circulated to the members of the committee in December 1965, and after the com 4. Introduction of Specialty Sessions. raents had been received, a "Recommendation 5. Elimination of introductory lectures. for Procedures of the Mexico City Conference" was prepared in July 1966. After circulation, 6. Elimination of Closing Session. this recommendation was in September 1966 presented to Professor Tamez of the Mexican In addition a number of changes and modifi­ Organizing Committee, at a meeting in Lisbon. cations in the procedures and conference Professor Tamez should then upon his return programmes have been proposed. to Mexico City arrange a meeting of the Organ izing Committee in which the proposal for the The Advisory Committee would like to express final programme could be established. However, its gratitude to the Organizing Committee of in February 1967 we received the sad news that the Vllth International Conference in Mexico Professor Carrillo, President of the Organizing City in 1969 for its willingness to accept Committee, died on February 19th, and the com and try out the new procedures and for the mittee had to be reorganized. As new president many valuable suggestions received during Professor Tamez was elected, with Dr. Ramirez the cooperation. de Arellano as Secretary- Members of the Advisory Committee: On April 19th and 20th a meeting was held at Harvard University where the procedures of A. W. Skempton the conference were discussed in great detail. A. Casagrande Present at this meeting were Dr. Ramirez de J. Brinch Hansen Arellano, Secretary of the Organizing Com­ J. G. Zeitlen mittee, and Dr. Arthur Casagrande and Dr. B. A. Kantey Laurits Bjerrum from the Advisory Committee.

Appendix K (i) Report of the Sub-committee on Literature Classification Appendice K (i) Rapport du Sous-Comité de Classification de and International Abstracts Service. June 1969 Publications et du Service International des Résumés. Juin 1969

INTRODUCTION nical literature classification system that At the 1965 Montreal Conference the Sub-com­ was the result of many years of work (the Sub­ mittee on Classification of Geotechnical Li­ committee was formally appointed in 1957 but terature submitted a proposal for a geotech- 78 work had actually started in Sweden before Divisions. The proposal for this classifi­ 1950). At the time the proposal was submitted cation system accompanies this report, and it was expected that the Sub-committee’s work it is intended to satisfy the needs of the would be completed in 1966. However, as the German Society for purposes of their abstracts result of further meetings immediately follow journal and to satisfy the needs of individuals ing the 1965 Conference.major changes in the and 9mall companies. Most individuals will classification system were suggested but, un­ require in-depth classification for only a fortunately, little further work was done by few Main Divisions and the Sub-committee took the Sub-committee until 1968. the view that at this time such in-depth classification could be most effectively done At the 1965 Montreal Conference the Swedish by each individual in consideration of his Geotechnical Institute submitted a proposal needs and interests. The proposed classifi­ to publish a geotechnical abstracts journal. cation system can also be used as a retrieval A new Sub-committee was appointed to investi^ system for private geotechnical libraries but gate this proposal. In 1967 the Swedish Ge£ for larger libraries it is inadequate in com­ technical Institute found it necessary to parison to excellent existing systems such as withdraw its offer to publish this abstracts the "Key-word Co-ordinate System" journal. An invitation was then extended to the German Society for Soil Mechanics to in­ The first three Principal Groups are the same vestigate the possibility of providing this as those proposed at Montreal (A General, service and the German Society kindly accepted B Engineering Geology, C Site Investigations). the invitation. The next group, D Soil Properties...... includes all matters concerning soil proper­ In 1968 the two sub-committees on literature ties and their determination in the laborato classification and on abstracts service were ry and the field. Group E Analysis ...... combined to form the Sub-committee on Litera deals with all aspects of analysis of soil ture Classification and International Ab­ engineering problems (as contrasted with de^ stracts Service. The tasks of this Sub-com- ign of engineering structures) and includes mittee we to co-ordinate the activities in all the analytical tools that are used in en these two areas and to bring to completion gineering design. Groups F and G are the the literature classification system because equivalents for rock of Groups D and E for it would be needed for the planned abstracts soils. Group H includes all the engineering journal. case records; that is, project design, cons­ truction and behaviour. Here are included all It should also be mentioned that the Soil Me­ literature presenting facts concerning the chanics Division of the ASCE has had a Com­ engineering of structures. Group K Improve­ mittee on Information Retrieval since 1963. ment of Soil and Rock Conditions includes sp£ This committee has remained very active and cial processes and equipment used to improve liaison has been maintained between this com soil and rock conditions (such as;compaction, mittee of the ASCE and the related sub-com­ dewatering, grouting, etc.). Group L Related mittees of the ISSMFE. Moae will be said Disciplines and Group S Snow and Ice Mechan­ about this liaison in a later section of this ics and Engineering are unchanged from the report. Montreal proposal. There are two groups in the Montreal proposal LITERATURE CLASSIFICATION that are not included or not included entir­ ely in the present proposal. The Montreal The basis on which the geotechnical litera­ Group M Materials-Construction is not included. ture classification system has always been It is partly included in Group II and it was constructed is the hierarchial system. This the concensus of the Sub—committee that many system consists of a series of lower-order materials are not peculiar to geotechnical divisions, and in the case of the present and engineering and that people requiring such a past proposals for geotechnical classification general category as Materials could simply systems there are (i) Principal Groups, that add it to their own classification system. are divided into (ii) Main Divisions, that The Montreal Group N Construction Methods(in are divided into (iii) Subdivisions, and so eluding equipment) is not a specific princi­ on. On looking back at the work of the sub­ pal group in the present proposal. It was committee it is clear that the most difficult thought that much of this literature would be problem that faced the Sub-committee was to classified under the new Group K which would decide on the individual Principal Groups. make unnecessary a separate group for cons­ Another observation that has been made several truction methods. times with respect to the Sub-committee's task is that the classification system should be To indicate what is intended to be classified simple and should be directed towards the needs under some of the Main Divisions, lists of of the small user; it should be so structured sub-divisions have been prepared and are in­ that it could be expanded to provide an in- cluded in the proposal. No attempt was made depth classification and or retrieval system to prepare lists of key words for the various if that was deemed necessary at a later date. Main Divisions or sub—divisions, as was done in the Montreal proposal. This type of in- The new Sub-committee therefore chose as itB depth classification is most effectively done immediate goal the formulation of a geotech­ by the individual. nical literature classification system that consisted only of Principal Groups and Main 79 ABSTRACTS SERVICE journal the abstracts will be grouped in the The German Society for Soil Mechanics, through subject order set out in the Literature Clas­ the person of Dr. H. Kuehn, has made a thorough sification System. study of the possibility of providing a geo- technical literature Bervice, and at the Exe­ cutive Committee meeting in Mexico City, a RECOMMENDATIONS proposal will be presented by the German So­ ciety for the publication of a journal called 1. It is anticipated that improvements in Geotechnical Abstracts. The main points of the proposed classification system will be the proposal are as follows. required. It is recommended that the system (1) A trial issue of Geotechnical Abstracts be used for a period of about one year by the will be printed and distributed to the nation German Society in their journal Geotechnical al committees before the Mexico Conference in Abstracts and that suggested improvements be August 1969. considered after this period of experience. National Societies would be encouraged to sub (2) If the Executive Committee finds the mit suggested changes for the system. journal acceptable, the journal will be under written for a trial period of three years by 2. In the past there has been communication the German Society. If the journal is not between the Sub-committee and the ASCE Com­ self-supporting after that time or if suffi­ mittee on Information Retrieval and Geodex In cient financial support cannot be obtanined temational. It is recommended that every — from other sources, the journal will be dis­ attempt should be made to work co-operatively continued. At the present time the expected with these groups with respect to literature yearly cost to each subscriber is about US classification systems and to literature ab­ $ 30, based on the number of 2000 subscribers stracts services. at the end of three years. (3) The abstract service will be truly in­ 3. To operate effectively and efficiently, ternational in scope. Throughout the world, a committee should be composed of persons in­ area representatives will be chosen and they terested and having first-hand experience in will select geotechnical literature that the matters of business of the committee. If they consider to be of value and will prepare the Executive Committee decides to retain the abstracts. These persons will be well-qua­ Sub-committee on Literature Classification lified engineers and will be paid for their and International Abstracts Service, it is services. Work has already proceeded towards recommended that the Sub-committee be re-ap- the establishment of this network of area re­ pointed and that its membership be reduced to presentatives. The journal will contain only say five persons and that these persons be abstracts of selected literature in the field representatives of literature abstracts ser­ of Soil Mechanics, Foundation Engineering, vices, of active geotechnical libraries and Rock Mechanics and Engineering Geology and it of professional and technical organizations will not contain everything that is published. active in literature classification and liter ature retrieval. — (4) The journal will be published regularly throughout the year (monthly or quarterly) and Respectfully submitted, the number of abstracts published per year E. E. De Beer will be from 1500 to 2000. B. Broms (5) Each abstract will be printed in the jour A. Casagrande nal in the format of a card, similar to the L. F. Cooling ASCE abstracts. The information included on A. Croce the card will be (i) subject classification, N. Flodin (Secretary) based on the literature classification system J. Florentin that is acceptable to the Executive Committee H. Petermann of ISSMFE,(ii) accession number, (iii) a com­ T. C. Kenney (Chairman) plete bibliographical reference, (iv) infor­ mative abstract of about 100 - 200 words, and Sub-committee on Literature Classification (v) list of key words. In each issue of the and International Abstracts Service.

Appendix K (ii) Proposal for International Geotechnical Classification Appendice K (ii> Proposition pour le Système de Classification International System (IGC) de Geotechnique (IGC)

PRINCIPAL GROUPS

A GENERAL C SITE INVESTIGATIONS Equipment and techniques of exploration, B ENGINEERING GEOLOGY sampling and field testing (excluding Including descriptions and case records determination of engineering properties) of natural phenomena. and pre-conBtruction field observations.

80 ABSTRACTS SERVICE journal the abstracts will be grouped in the The German Society for Soil Mechanics, through subject order set out in the Literature Clas­ the person of Dr. H. Kuehn, has made a thorough sification System. study of the possibility of providing a geo- technical literature Bervice, and at the Exe­ cutive Committee meeting in Mexico City, a RECOMMENDATIONS proposal will be presented by the German So­ ciety for the publication of a journal called 1. It is anticipated that improvements in Geotechnical Abstracts. The main points of the proposed classification system will be the proposal are as follows. required. It is recommended that the system (1) A trial issue of Geotechnical Abstracts be used for a period of about one year by the will be printed and distributed to the nation German Society in their journal Geotechnical al committees before the Mexico Conference in Abstracts and that suggested improvements be August 1969. considered after this period of experience. National Societies would be encouraged to sub (2) If the Executive Committee finds the mit suggested changes for the system. journal acceptable, the journal will be under written for a trial period of three years by 2. In the past there has been communication the German Society. If the journal is not between the Sub-committee and the ASCE Com­ self-supporting after that time or if suffi­ mittee on Information Retrieval and Geodex In cient financial support cannot be obtanined temational. It is recommended that every — from other sources, the journal will be dis­ attempt should be made to work co-operatively continued. At the present time the expected with these groups with respect to literature yearly cost to each subscriber is about US classification systems and to literature ab­ $ 30, based on the number of 2000 subscribers stracts services. at the end of three years. (3) The abstract service will be truly in­ 3. To operate effectively and efficiently, ternational in scope. Throughout the world, a committee should be composed of persons in­ area representatives will be chosen and they terested and having first-hand experience in will select geotechnical literature that the matters of business of the committee. If they consider to be of value and will prepare the Executive Committee decides to retain the abstracts. These persons will be well-qua­ Sub-committee on Literature Classification lified engineers and will be paid for their and International Abstracts Service, it is services. Work has already proceeded towards recommended that the Sub-committee be re-ap- the establishment of this network of area re­ pointed and that its membership be reduced to presentatives. The journal will contain only say five persons and that these persons be abstracts of selected literature in the field representatives of literature abstracts ser­ of Soil Mechanics, Foundation Engineering, vices, of active geotechnical libraries and Rock Mechanics and Engineering Geology and it of professional and technical organizations will not contain everything that is published. active in literature classification and liter ature retrieval. — (4) The journal will be published regularly throughout the year (monthly or quarterly) and Respectfully submitted, the number of abstracts published per year E. E. De Beer will be from 1500 to 2000. B. Broms (5) Each abstract will be printed in the jour A. Casagrande nal in the format of a card, similar to the L. F. Cooling ASCE abstracts. The information included on A. Croce the card will be (i) subject classification, N. Flodin (Secretary) based on the literature classification system J. Florentin that is acceptable to the Executive Committee H. Petermann of ISSMFE,(ii) accession number, (iii) a com­ T. C. Kenney (Chairman) plete bibliographical reference, (iv) infor­ mative abstract of about 100 - 200 words, and Sub-committee on Literature Classification (v) list of key words. In each issue of the and International Abstracts Service.

Appendix K (ii) Proposal for International Geotechnical Classification Appendice K (ii> Proposition pour le Système de Classification International System (IGC) de Geotechnique (IGC)

PRINCIPAL GROUPS

A GENERAL C SITE INVESTIGATIONS Equipment and techniques of exploration, B ENGINEERING GEOLOGY sampling and field testing (excluding Including descriptions and case records determination of engineering properties) of natural phenomena. and pre-conBtruction field observations.

80 D SOIL PROPERTIES; LABORATORY AND FIELD Possible Subdivisions DETERMINATIONS AO 2 Concepts, theories, methods of determina Awards Biographies tion, equipment and results. History Obi tuaries E ANALYSIS OF SOIL-ENGINEERING PROBLEMS AO 3 Theoretical, empirical and practical Bibliographies Literature classification methods of analysis. AO 4 F ROCK PROPERTIES; LABORATORY AND FIELD Handbooks Periodicals DETERMINATIONS Publication series Textbooks Concepts, theories, methods of determina tion, equipment and results. AO 5 Definitions Descriptors G ANALYSIS OF ROCK-ENGINEERING PROBLEMS Dictionaries Nomenclauture Theoretical, empirical and practical Symbols methods of analysis. A06 Consultants H DESIGN, CONSTRUCTION AND BEHAVIOUR OF EN­ Firms Institutes GINEERING WORKS. Laboratories Descriptions; case histories; syntheses of investigations, design, construction A07 Conferences (including equipment) and behaviour. Societies

A08 K IMPROVEMENT OF SOIL AND ROCK CONDITIONS. Accidents METHODS AND EQUIPMENT Building codes Calculated risks Codes of practice L RELATED DISCIPLINES Ethics Legal requirements Liability S SNOW AND ICE MECHANICS AND ENGINEERING

A______GENERAL

Main Divisions B ENGINEERING GEOLOGY Including Descriptions and Case Records A01 Foundation, Soil and Rock of Natural Phenomena. Engineering - Scope

A02 Historical Aspects Main Divisions

A03 Bibliographies and Litera­ BOO General ture Classification

A04 Textbooks, Handbooks and B01 Soil Formation Geotechnical Periodicals

A05 Nomenclature B02 Ground Water

A06 Companies, Institutes, and Laboratories B03 Mass Movements and Subsidence

A07 Societies and Meetings B04 Natural Catastrophes (including A08 Professional Ethics and earthquakes, floods) Legal Requirements

A09 Education B05 Permafrost and Frozen 3rounJ 8 1 B10 Clay minerals B06 Submarine Geology Crystallography Mineralogy Structural Geology DiagenesiB B07 Metamorphism Petrograpy B08 Extraterrestrial Geology C SITE INVESTIGATIONS B09 Geomoaphology Equipment and Techniques of Exploration, Sampling and Field Testing (excluding B10 Mineralogy and Petrography determination of engineering properties), and Pre-construction Field Observations.

Possible Subdivisions Main Divisions B01 Deposits - general features COO General (incl. planning of site Deposits - special features investigations) Residual deposits River deposits C01 Airphoto Surveys Lacustrine deposits Marine deposits C02 Geophysical Surveys Glacial deposits Wind deposits C03 ProbingB (Soundings) Volcanic deposits Organic terrain C04 Exploratory Excavations Accumulation and removal of C05 constituents Boring Technique and Equipment Geologic preloading and Recording of Results BO 2 Ground water origin and occurrence C06 * Ground water types Sampling, Handling of Samples Ground movements Quality of water C07 Measurement of Field Conditions B03 (incl. ground water, in situ stress) Slow soil flow Solifluction C08 Landslides Field Testing (excluding tests Land subsidence for engineering properties, see Groups D and F) B04 Earthquakes C09 FloodB Reports on Site Investigations Waves

BO 5 Possible Subdivisions Frost fundamentals Distribution of permafrost and C02 frozen soils Geophysical methods - general Types of permafrost Seismic survey Permafrost landforms, including Electrical methods surface features Gravity methods Magnetic methods B06 Sonic methods Submarine erosion Submarine sedimentation C03 Submarine topography Dynamic probing Static probing BO0 Wash probing Lunar geology Lunar soils C05 Boring technique - general B09 Boring methods and equipment Erosion, subaerial Drill rigs and auxiliary equipment Enogenetic processes Recording of boring results, Slope Development including down-hole techniques Submarine boring Sampling - general D02 Sample handling Soil-water relationship Physical properties C07 Chemical properties Deformation, settlement Ground water table D03 Ground flow Soil composition In situ stress Grain size and shape Pore-water pressures Soil structure, fabric Temperature Density, degree of saturation

C08 D04 Seepage tests, pumping tests Fundamental flow properties Plate bearing tests Determination of permeability Pile load tests and capillarity Rock drilling tests Filter properties Blasting tests D05 Fundamental properties D SOIL PROPERTIES: LABORATORY AND FIELD Compressibility and swelling Consolidation Secondary-time effects Concepts, Theories, Methods of Determina Repetitive loading tion, Equipment and Results. D06 Fundamental properties Main Divisions Stress-strain properties Elastic properties D00 Failure criteria General (including Liquifaction laboratory supplies) Compression testB, incl. triaxial Direct shear tests D01 Vane teste Classification and Identification Fall cone tests

D02 DOS Physico-chemical Properties (incl. Thermal properties corrosion, thixotropy) Freezing properties

DO 3 D09 Composition, Structure and Density Fundamental properties (including porosity) Compaction tests Compaction test equipment D04 Permeability and Capillarity DIO Additives D05 Soil mixtures Compressibility (including Stablized soils consolidation and swelling)

DO 6 E ANALYSIS OF SOIL-ENGINEERING PROBLEMS Shear-deformation and Strength Properties (incl. pore-water Theoretical, Empirical and Practical pressure) Methods of Analysis.

DO 7 Main Divisions Dynamic Properties E00 DO 8 General Thermal Properties (incl. freezing) E01 DO 9 In Situ Stresses caused by Gravity Compactibility Applied Loads and Excavations

D10 E02 Properties of Soi1-Additive mixtures Deformation and Settlement Problems (including piles) Possible Subdivisions E03 D01 Bearing Capacity of LIoils Soil classification Consistency limits, incl. water content E04 Bearing Capacity of Files 83 Earth pressure on tunnels and Earth Pressure Problems (incl. silos; shaf ts Earth pressure on conduits Silo pressure E06 Stability of Slopes, Cuts and E06 Excavations Basic theories Stability of natural slopes E07 Stability of cuts and excavations Seepage and other Hydraulic Stability of dam slopes Problems (incl. erosion) Stability problems - special

E08 E07 Dynamic Problems Basic theories Seepage to wells and drains E09 Seepage into excavations Frost Action and Heat-Transfer Seepage through and below dams Problems Piping, heave and internal erosion Surface water erosion E10 Behaviour of Base Courses and E08 Pavements Basic theories Ell Impact problems Soil-vehicle Interaction Machine foundations (trafficability) Earthquake effects Blast effects Possible Subdivisions Wave propagation Dynamic response E01 Basic Theories E09 Stresses caused by gravity Basic theories Stress distribution from Temperature distribution in soil vertical loads Thermodynamic conditions Stress distribution from Heat exchange at ground surface horizontal loads Frost penetration Contact pressures Frost problems related to structures

E02 F ROCK PROPERTIES: LABORATORY AND FIELD Basic theories DETERMINATIONS Settlement analysis Consolidation theories Concepts, Theories, Methods of Determina Secondary time effects tion, Equipment and Results. Preloading and unloading Regional settlements Main Divisions Settlements due to climatic conditions, vegetation, etc. F00 Settlements due to dynamic and General (incl. laboratory repetitive loadings supplies)

E03 F01 Basic theories Classification and Identification Bearing capacity of footings Foundation failure of embankments F02 Physico-chemical Properties (incl. E04 weathering resistance) Basic theories Bearing capacity of individual F03 piles Composition, Structure and Density Pulling resistance (including porosity) Pile driving formulae and problems F04 Bearing capacity of pile groups Permeability and Capillarity Piles and pile groups subjected to lateral forces F05 Compressibility and Swelling E05 Basic theories F06 Earth pressure on retaining walls Shear-Deformation and Strength Earth pressure on temporary supports Properties Earth pressure on free and anchored sheet piles F07 Stability of double wall and Dynamic Properties cellular cofferdams 64 F08 G06 Special Properties of Rock Dynamic Problems (incl. thermal, electric and magnetic properties) G07 Frost Action and Heat-Transfer Possible Subdivisions Problems F01 Rock classification H DESIGN. CONSTRUCTION AND BEHAVIOUR OF Rock identification ----ENSINEERINC WOKKiT------Rock hardness (drillability) Rock quality (incl. recovery, Descriptions; case histories; Syntheses velocity ratio, fracture frequency) of Investigations, Design, Construction (including equipment and materials) and F02 Behaviour. Geochemical properties of rock Weathering resistance Main Divisions F03 Density and porosity H00 Composition General (incl. general contracts Structure and specifications)

F04 HOI Permeability Capillarity Foundations of Structures (buildings, bridges, tanks, etc.)

F05 H02 Compressibility Retaining Structures and Cutoff Swelling Walls Time effects

F06 HO 3 Unsopported Excavations Elastic properties Plastic properties HO 4 Compression strength Earthworks, Embankments, Fills and Tensile strength DamB (for compaction see KOI) Residual strength

F08 H05 Thermal properties Underground Structures (incl. Electric properties tunnels, conduits and shafts) Magnetic properties H06 G ANALYSIS OF ROCK-ENGINEERING PROBLEMS Base Courses and Pavements of Roads Railroads and Airfields Theoretical, Empirical and Practical Methods of Analysis H07 Harbours, Canals and Coastal Main Divisions Protective Works

GOO General Possible Subdivisions

G01 H00 In Situ Stresses caused by Gravity, General contracts Tectonics, Applied Loads and General specifications Excavations HOI G02 Equipment Deformation Problems Materials Shallow foundations, incl. GO 3 underpinning Bearing Capacity of Rock Piled foundations Deep foundations, excluding G04 piles Stability of Slopes, Excavations and Openings H02 Equipment Materials GO 5 Seepage Problems (incl. drainage) Retaining walls Sheet-pile walls Cellular cofferdams 85 Cutoff walls Possible Subdivisions Sheeted excavations Tie-back walls KOI Surface compaction HO 3 Equipment Deep compaction Open cuts Open pits K02 Ground-water lowering Wells and pumps H04 Equipment Surface drainage Embankments Vertical drains Fills and dumps Earth-fill dams K03 Rock-fill dams Cement grouting Clay grouting HO 5 Chemical grouting Equipment Materials K04 Tunnels in soil Additives Tunnels in rock Mixing equipment Cavities in rock Shafts K07 Conduits and culverts Electrochemical methods Electro-osmosis H06 Equipment K08 Materials Rock bolts Airfields Rock anchors Railroads Rib supports Roads

HO 7 L RELATED DISCIPLINES Equipment Materials Main Divisions Harbours Canals L01 Coastal protective workB Pure Sciences River regulation works L02 Geological Sciences K IMPROVEMENT OF SOIL AND ROCK CONDITIONS. - - - METH0P5 AMD EQUIPMENT------L03 Main Divisions Agriculture and Pedology L04 K00 Meteorology and Climatology General L05 KOI Biosciences Compaction L06 K02 Civil Engineering Dewatering and Drainage L07 K03 Mining Engineering Grouting L08 K04 Mechanical Engineering Stabilization of Soils L09 K05 Electrical Engineering Preloading L10 K06 Ocean Engineering Thermal Processes (freezing and burning) Lll Military and Naval Engineering K07 Electrical Processes L12 K08 Instrumentation and Measuring Rock Reinforcement and Support Technique

86 S SNOW AND ICE MECHANICS AND ENGINEERING 1 1 3 Library Science Main Divisions

Possible Subdivisions 501 Snow and Ice Cover

L01 502 Cheatstry Mathematics Properties of Snow and Ice Physics Computer science 503 Snow and Ice Engineering L05 Botany Possible Subdivisions Zoology 501 L06 Snow occurrence and depth Building Industry Avalanches Coastal Engineering Glaciers Construction Ice cover on water bodies Highway and Railway Engineering Hydraulic Engineering 502 Irrigation and Drainage Engineering Physical properties of snow Pipelines Physical properties of ice Power Engineering Thermodynamics of ice-water systems Sanitary Engineering Structural Engineering 503 Surveying and Mapping Snow and ice as structural materials Town Planning Snow and ice removal Transport Engineering Protection methods and structures Waterways and Harbours against Bnow and ice

Appendix L Report of the Symbols and Definitions Sub-Committee Appendice L Rapport du Sous-Comrté des Symboles et Definitions

Nous rendons compte ci-après de l ’acti­ Les membres de notre Sous-Commission vité du Sous—Comité des Symboles et ayant constaté que ces réunions entraînent Définitions depuis le Congrès de Montréal. des frais importants de voyage et des pertes de temps, il a été proposé par Tout d ’abord, la liste des symboles et M. TER STEPANIAN de procéder par corres­ définitions adoptés au dernier congrès de pondance, et à cette occasion M. TER Montréal a été mise au point et insérée STEPANIAN et le Professeur SCHULTZE ont dans le Lexique Technique publié en 1967 proposé que soient normalisés quelques ppr la Société Internationale de Mécani­ symboles et définitions supplémentaires. que des Sols et des Travaux de Fonda­ tions sur l’initiative de M^Qh.SCHAERER, Tous mes collègues n'ont pas eu la pos­ Président de la Commission de Rédaction sibilité d'exprimer complètement leur du Lexique Multilingue. avis sur ces nouvelles propositions, et il leur a apparu, comme à moi-même,qu'il On sait q u ’il s'agit là d'une 3ème édi­ y avait lieu de s’accorder une période tion en 8 langues faisant suite à la de "digestion" à la suite de l'adoption 2ème édition en 6 langues parue en 1954, des 70 symboles déjà parus. •t qui était épuisée dès I960. Il y a à cet égard lieu de se féliciter L'UNESCO, par l'intermédiaire de l'U.A.T.I. de l'adoption de plus en plus généralisée (Union des Associations Techniques Inter­ de ces symboles et définitions, ce qui nationales) au cours de délibérations contribue constamment à apporter une auxquelles j'assistais personnellement, clarification dans les rapports entre avait accepté de subventionner cette tous les Ingénieurs de Mécanique des 2ème édition. Sols.

Je voudrais ici saisir l'occasion de la Je pense personnellement que l'adoption parution de cette 3ème édition du Lexique de nouveaux symboles se heurtera à de pour exprimer toute ma gratitude à nombreuses habitudes nationales, et que M. Ch.SCHAERER pour le travail considéra­ d ’autre part, l ’adoption de trop nom­ ble qu'il a accompli. Il faut en effet breux symboles ne s'impose pas; leur s'ïtre occupé de ces questions, souvent multiplicité risquerait d'affaiblir leur ingrates, pour savoir quelle somme de respect. travail elles demandent et quelle corres­ pondance elles appellent. Voici les conclusions auxquelles j'arriw 87 S SHOW AND ICE MECHANICS AJfD ENGINEERING 1 1 3 Library Science Main Divisions

Possible Subdivisions 501 Snow and Ice Cover

L01 502 Cheatstry Mathematics Properties of Snow and Ice Physics Computer science 503 Snow and Ice Engineering L05 Botany Possible Subdivisions Zoology 501 L06 Snow occurrence and depth Building Industry Avalanches Coastal Engineering Glaciers Construction Ice cover on water bodies Highway and Railway Engineering Hydraulic Engineering 502 Irrigation and Drainage Engineering Physical properties of snow Pipelines Physical properties of ice Power Engineering Thermodynamics of ice-water systems Sanitary Engineering Structural Engineering 503 Surveying and Mapping Snow and ice as structural materials Town Planning Snow and ice removal Transport Engineering Protection methods and structures Waterways and Harbours against Bnow and ice

Appendix L Report of the Symbols and Definitions Sub-Committee Appendice L Rapport du Sous-Comité des Symboles et Definitions

Nous rendons compte ci-après de l'acti­ Les membres de notre Sous-Commission vité du Sous—Comité des Symboles et ayant constaté que ces réunions entraînent Définitions depuis le Congrès de Montréal. des frais importants de voyage et des pertes de temps, il a été proposé par Tout d'abord, la liste des symboles et M. TER STEPANIAN de procéder par corres­ définitions adoptés au dernier congrès de pondance, et à cette occasion M. TER Montréal a été mise au point et insérée STEPANIAN et le Professeur SCHULTZE ont dans le Lexique Technique publié en 1967 proposé que soient normalisés quelques ppr la Société Internationale de Mécani­ symboles et définitions supplémentaires. que des Sols et des Travaux de Fonda­ tions sur l'initiative de M^Qh.SCHAERER, Tous mes collègues n'ont pas eu la pos­ Président de la Commission de Rédaction sibilité d'exprimer complètement leur du Lexique Multilingue. avis sur ces nouvelles propositions, et il leur a apparu, comme à moi-même,qu'il On sait qu'il s'agit là d'une 3ème édi­ y avait lieu de s'accorder une période tion en 8 langues faisant suite à la de "digestion" à la suite de l'adoption 2ème édition en 6 langues parue en 1954, des 70 symboles déjà parus. •t qui était épuisée dès I960. Il y a à cet égard lieu de se féliciter L'UNESCO, par l'intermédiaire de l'U.A.T.I. de l'adoption de plus en plus généralisée (Union des Associations Techniques Inter­ de ces symboles et définitions, ce qui nationales) au cours de délibérations contribue constamment à apporter une auxquelles j'assistais personnellement, clarification dans les rapports entre avait accepté de subventionner cette tous les Ingénieurs de Mécanique des 2ème édition. Sols.

Je voudrais ici saisir l'occasion de la Je pense personnellement que l'adoption parution de cette 3ème édition du Lexique de nouveaux symboles se heurtera à de pour exprimer toute ma gratitude à nombreuses habitudes nationales, et que M. Ch.SCHAERER pour le travail considéra­ d'autre part, l'adoption de trop nom­ ble qu'il a accompli. Il faut en effet breux symboles ne s'impose pas; leur s'ïtre occupé de ces questions, souvent multiplicité risquerait d'affaiblir leur ingrates, pour savoir quelle somme de respect. travail elles demandent et quelle corres­ pondance elles appellent. Voici les conclusions auxquelles j'arriw

87 et qui devraient être examinées dans le termes marqués d'un astérisque. Il est Congrès Spécial de Mécanique des Sols, évident à cet égard que, pour donner deux exemples: le terme 1576, "examen à Congres Spécial décidé par les organi­ vue" ne nécessite aucune définition;par sateurs du congrès avec le plein accord contre, le terme 437 : "distorsion", de notre Président International, et sur appelle sans aucun doute une définition les suggestions notamment de divers mem­ (en français, notamment, ce terme peut bres actifs de notre Société, tels que avoir deux significations). le Dr. GOLDER, et M. JURGENSON qui ont écrit sur la Terminologie en Mécanique 4°) Il apparaît que la Mécanique des Sols des Sols des articles fort pertinents utilise de plus en plus le langage de dans GEOTECHNIQUE. la Rhéologie; des travaux importants de définition des termes de Rhéologie ont 1°) Je pense que dans le Congrès Spécial été effectués récemment, en dehors de la de Mexico, pourrait être proposée l'adop­ Mécanique des Sols, et il y aurait lieu tion d'une dizaine de symboles et défi­ à mon sens d'introduire les termes et nitions nouveaux seulement, au premier définitions correspondantes dans le rang desquels je verrais les suivants: Lexique. Je fais allusion par exemple aux -Contraintes principales (f^ termes suivants: déviateur (dont la défi­ nition est différente suivant qu'il

Appendix M Report of Subcommittee on Soil Sampling Appendice M Rapport du Sou*-Comrt4 de P riia d'Echantillont

The following sub-committee was elected at This sub-committee was in fact the committee the VIth Conference to undertake studies in of the International Group on Soil Sampling soil sampling. and the subsequent activities of the sub-corn mittees of this International Society of SoTl Aitchison (convener) and Mori, Mechanics and Foundation Engineering have Broms, Osterber, with Hvorslev been fully integrated with I.G.O.S.S. matters. as adviser and Wood as secretary.

88 et qui devraient être examinées dans le termes marqués d'un astérisque. Il est Congrès Spécial de Mécanique des Sols, évident à cet égard que, pour donner deux exemples: le terme 1576, "examen à Congres Spécial décidé par les organi­ vue" ne nécessite aucune définition;par sateurs du congrès avec le plein accord contre, le terme 437 : "distorsion", de notre Président International, et sur appelle sans aucun doute une définition les suggestions notamment de divers mem­ (en français, notamment, ce terme peut bres actifs de notre Société, tels que avoir deux significations). le Dr. GOLDER, et M. JURGENSON qui ont écrit sur la Terminologie en Mécanique 4°) Il apparaît que la Mécanique des Sols des Sols des articles fort pertinents utilise de plus en plus le langage de dans GEOTECHNIQUE. la Rhéologie; des travaux importants de définition des termes de Rhéologie ont 1°) Je pense que dans le Congrès Spécial été effectués récemment, en dehors de la de Mexico, pourrait être proposée l'adop­ Mécanique des Sols, et il y aurait lieu tion d'une dizaine de symboles et défi­ à mon sens d'introduire les termes et nitions nouveaux seulement, au premier définitions correspondantes dans le rang desquels je verrais les suivants: Lexique. Je fais allusion par exemple aux -Contraintes principales (f^ termes suivants: déviateur (dont la défi­ nition est différente suivant qu'il

Appendix M Report of Subcommittee on Soil Sampling Appendice M Rapport du Sou*-Comrt4 de P riia d'Echantillont

The following sub-committee was elected at This sub-committee was in fact the committee the VIth Conference to undertake studies in of the International Group on Soil Sampling soil sampling. and the subsequent activities of the sub-com mittees of this International Society of SoTl Aitchison (convener) and Mori, Mechanics and Foundation Engineering have Broms, Osterber, with Hvorslev been fully integrated with I.G.O.S.S. matters. as adviser and Wood as secretary.

88 Ter— of Reference (1) The apparatus of soil sampling; (2) The procedures of soil sampling; No specific terms of reference were defined (3) The logic of soil sampling (from as the basis for the program of the committee. the soil mechanics point of view); It was clearly intended however that the prin and cipal objective should be that of continuing (4) The quality of soil sampling. the work undertaken previously by the I.G.O.S.S. group under the guidance and chairmanship of A great deal of attention has been given, Dr. T. Kallstenius. in recent years, to the apparatus of soil sampling. A multitude of sampling devices Nevertheless since it was a basically new com and a great number of items of equipment for mittee which was charged with this rather operating these devices have been described vague task, the first and principal activity in the literature. The volume of these types consisted of an attempt to define the most of publications does not appear to be diminishing important areas of the whole state-of-the-art and it did not seam to be an important func­ of soil sampling. tion of the committee to further pronote this line of activity - although there is no The appointment of the sub-committee at the suggestion that developments along these conclusion of the Vlth International Confer­ lines are not valuable. ence precluded any real opportunities for planning of activities during that Conference, The second topic - the procedures of and as matters have turned out also precluded soil sampling - has not received comparable any possibility for a full meeting of the com attention. In fact there is evidence that, mittee between the Vlth and the Vllth Confer— in many circumstances, the poor standard of ence. Accordingly, it became necessary to performance of well known procedures of soil arrange for separate talks between pairs of sampling has limited the program of soil en­ individual members whenever other interests gineering in a community. This widespread created an opportunity for a meeting. It has deficiency in sampling practice, within an been the good fortune of the convener to meet already described technology, is a matter of at least once with each member of the committee real’ concern and one that warrants a comment during the four-year period but a gap of three from this committee. It is felt that very years existed between the first and the last considerable effort should be devoted to the of these conversations. (This difficulty of establishment of a proper code of practice arranging in-person meetings represents a for soil sampling in each community but it major limitation to the potential effectiveness appears to be logical to regard these efforts of an international committee - but that to­ as being the responsibility of each community. pic is not a matter for discussion in this Consequently, while expressing concern at report). this deficiency, the committee did not regard this topic as appropriate, at this time, for Arising from these individual meetings and international action. general correspondence it became apparent that very little thought indeed was being The two remaining topics were selected directed towards the subject of soil sampling. for major attention. It became apparent that The process of soil sampling was being under the literature contained very few examples of taken - in almost every part of the world - careful thought of the interactions that must as a matter of habit. In those few areas occur between the successive stages of a which could boast of a high standard of soil logical site investigation coupled with labo­ engineering together with an active program ratory study and subsequent evaluation. These of basic soil research it appeared that the stages might be outlined as : habit of soil sampling was a good one. In Firstly : the definition of a problem all other areas soil sampling tended to be involving soil engineering ; merely a bad habit with much of the availa­ ble knowledge subjected, often deliverately, Secondly: the appreciation by the soil to the demands of commercialism. Underper- engineer of the (expected) formance on the part of soil engineers engaged properties of the (expected) in site investigation appeared to be common soils of the site with empha­ and in turn there were many suggestions of sis on those properties which underperformance on the part of soil engi- may be critical for the stat­ meers engaged in the design process. ed engineering purpose ; Thirdly : the awareness by the soil en­ No attempt was made to document any causes gineer of laboratory and com­ of this unsatisfactory degree of performance. putational procedures involved Dissatisfaction was stated widely and these in the quantification of the statements in general terms were accepted as soil properties ; sufficient to determine a policy for the com mittee's activities. Fourthly: (and not earlier) the decision by the soil engineer concern­ The Program ing the sampling method (including dimensions and type It was considered that the various aspects of apparatus and operating pro­ of the whole process of soil sampling could cedures) ; and be treated in several major parts. These Finally: the necessary checks in the included: field and the laboratory to 89 ensure that the soil engineer­ Certainly it does appear that a great ing process (including soil deal of effort will have to be expended on sampling) did in fact meet the the production of adequate demonstrations of demands of the stated engineer­ the soil mechanics reasoning behind decisions ing problems. to sample (or not to sample; according to a There is of course no doubt that many particular technique. The committee feels competent soil engineers have followed this very strongly that this effort is worthwhile pattern of thinking. In all probability much as a useful contribution to rational soil en­ of the equipment available today has emerged gineering. For thi9 reason it proposes that from this thought process but there are this work should continue. remarkably few documented cases in which the The fourth aspect of soil sampling in­ soil mechanics reasoning behind the use of a volves the definition of quality. Many of the specific sampling device for a specific pur­ simpler lines of soil mechanics reasoning in pose has been stated. the determination of sampling procedures for specific soils can now be stated but they There appeared to be a great deal of often tend to lack acceptance because of a value In the publicising of knowledge within lack of an appropriate language for the ex­ the general terms of reference of "the soil pression of both the purpose and the achie­ mechanics aspects of the process of soil vement of the sampling process. saapling". The purpose of the collation and presentation of this knowledge was thre.efold. The committee feels that urgent atten­ Firstly it was considered to be desirable to tion should be given to the task of defining show the place of soil engineering thought as - preferably on an international basis - a prerequisite to soil sampling in a logical three aspects of sample quality. There are : process of site investigation. Secondly it (1) The parameters of quality of a was intended to demonstrate the probable or soil sample and the rationaliza­ actual value (or, alternatively, inapplica­ tion of these parameters into bility) of any process of soil sampling in quality classes ; relation to characteristic problems on Im­ portant soil types, and, thirdly it was in­ (2) The procedures which may be tended to highlight the gaps in present know­ expected to achieve specified ledge with a view to the encouragement of sample qualities (defined in relevant research in these areas. terms of parameters or classes) in specified materials ; and On the basis of this line of reasoning and with considerable support in principle (3) Test procedures for the measu­ from a number of senior engineers it was rement of sample quality. arranged that papers should be invited to a A useful contribution on sample quality symposium on 'the soil mechanics aspects of will be presented by Dr. Muhs for discussion the process of soil sampling'. In the course in the latter part of Specialty Session No 1. of development this symposium came to be syno­ nymous with Specialty Session No 1 of this Continuation of program Conference as it was considered essential that papers should receive adequate discussion. This committee certainly has not achie­ ved all that it had hoped. Although its real It has come as a matter of some surprise progress cannot be judged until the end of to the committee to note the reluctance of en thiB Conference it is certain that the two glncora to write on this topic. Despite the main tasks - that of seeking to define the strangest protestations of interest by many, soil mechanics aspects of soil sampling and only a comparatively few authors have even that of seeking to specify the quality of a attempted to present a paper. If it iB accept ed that there is a real Interest in this sub­ soil sample - must both be pursued vigorous­ ly for a significantly longer period of time ject the question must be aeked whether the if whorthwhile results are to be attained. laek of willingness to prepare papers reflects a lack of ability to do so - or in other words Subject to the approval of the Executive reveals a lack of continuity in the soil en­ Committee it is hoped that a further Specially gineering thought process. Session on Soil Sampling might be organized This question cannot yet be answered for by this sub-committee at the forthcoming the material to be presented to Specialty Asian Regional Conference and possibly at Session Ho 1, in the form of papers and the other Regional Conferences. It is considered contributions of Discussion Leaders, haB not that a more or less continuous pressure must been subjected for consideration. However in be exerted on the soil engineering profession recognition of the lmportanoe of seeking fur­ in order to elucidate much of the known ther expressions of opinion on the state-of- potential of soil sampling. the art of the soil mechanics aspects of soil sampling several preliminary meetings were In every meeting which has been held to held In centers throughout Asia and in U.S.A. date, engineers have stressed the potential Meetings with soil engineers were held, as benefits to the profession which could arise I.G.O.S.S. activities, in Bangkok, Hongkong, from an upgrading of present practices - Osaka, Tokyo and Chicago, and the opinions which have often degenerated to a substandard expressed at these meetings will be further level merely because of a lack firstly of co­ debated during Specialty Session Ho 1. ordinated evidence of the desirability of high quality operations (in relation to the

90 t ask in hand); and secondly of a means of It iB expected that I.G.O.S.S. activities specifying the desired quality in sampling will continue as an essential part of the operations. process of the establishment of communication The sub-committee feels as a result of between soil engineers. these expressions of opinion that a conti­ nuation of its efforts Bight well be warrant­ Further report ed. The work of the sub-committee would be greatly facilitated by better opportunities This report is necessarily incomplete since for contact between members and with National the forthcoming Specialty Session No 1 and the and Regional Soil Groups. meetings of I.G.O.S.S. are essential parts of Other associated activities the present program. The International Group on Soil Sampling A report of these activities will be pre­ continues to operate as a forum for the inter­ seated in written form immediately after this change of ideas and information. Data obtai­ Conference. ned from questionnaires reveal a progressive increase in the level of sophistication of apparatus, in the awareness of a need for C.D. AITCHISON some standardisation of apparatus and in the CONVENER prodnotion of codes of practice.

91 OPENING SESSION IN HONOR OF NABOR CARRILLO

SEANCE INAUGURALE A LA MEMOIRE DE NABOR CARRILLO

Unidad de Congresos, Centro Médico Nacional, August/Aoüt 25, 1969

Participants tions have been suggested by The directors of our International Society in -constant commun­ ication with the Advisory Committee recently_ PROF. ENRIQUE TAMEZ G., President of the Organizing Committee created to assist, on the basis of its exper­ ience, the organizing committees of these me­ etings. Through various published bulletins MR. JOSE HERNANDEZ TERAN, Minister of Hydraulic Resources, you have been informed of the details of these procedural changes which woll, without in representation of the President of México, LIC. GUSTAVO DIAZ doubt, fundamentally reflect the general ORDAZ opinion that such changes were necessary in our International Conferences as a consequence of the increasing number of papers being prejj ented and the physical impossibility of per­ DR. LAURITS BJERRUM, President of the International Society for mitting adequate discussion for each of them. Soil Mechanics and Foundation Engineering It is the feeling of the Organizing Committee of this Conference that the procedure propos­ ed for the main sessions will allow for wider discussion of those items of greatest general DR. ARTHUR CASAGRANDE, Former President of the International interest at the time, without, however, pre Society for Soil Mechanics and Foundation Engineering tending to cover the entire field of soil me chanics. On the other hand, the specialty sessions will permit detailed discussion of specific subjects which are of interest to MRS. ELENA CARRILLO, Mexico City small groups. There is no doubt that the in­ troduction of these procedures will consti­ tute in itself and experiment whose aim it iB to find new means to make these meetings more fruitful for all those who attend them and for our profession as a whole.

And what better place to carry out this exper E. TAMEZ G. iment than here in thiB great soil mechanics laboratory, Mexico City. We hope that all of your contributions will make it a success. Mr. José Hernández Terán, representative of the President of México and Minister of The agenda for the main sessions was drawn up Hydraulic Resources; Mrs. Elena Carrillo, in such a manner as to be of both general in­ Dr. Bjerrum, President of the International terest to our profession and of local inter­ Society for Soil Mechanics and Foundation est to the host country of the Seventh Confer Engineering; distinguished Presidium; ladies; ence. Consequently, two of the items, that Colleagues. concerning Foundations in Clay and the one concerning Tunnels and Deep Excavations in In keeping with your wishes expressed in Mon­ Soft Soil, are of great interest for the sol treal, Canada four years ago, we are gathered ution of soil problems in Mexico City. here today in Mexico City to celebrate the Se venth Conference of our International Socie­ Foundation engineering practice in this city ty for Soil Mechanics and Foundation Engine­ constitutes a hard test for soil mechanics, ering. On this occasion our international both theoretical and experimental. To design meeting embodies a series of innovations, both and build good foundations here, implies to with regard to procedure as well as to the deal with soft, highly compressible, expansive content of the agenda itself. These innova­ colloidal and very thick clay deposits. But

95 if all these inconveniences were not enough neficial to all of us and will contribute to complicate the lives of the soil special­ firmly to the progress of soil mechanics and ists, we further add to our difficulties by foundation engineering. drinking the subsoil water and thus causing the general subsidence of the city. Today, as fate would have it, it befell me to address you on the occasion of the open­ ing of this Conference. I am doing so in I do not want to alarm you, but you should place of the man who was President of the Or know that next friday, when we close this con ganizing Committee of this Conference and ference, the building where we are now gather whose enthusiasm for the advancement of soil ed will be 2 millimeters closer to sea level. mechanics to a great degree encouraged the Fortunately enough, there are still other Mexican delegates to the Sixth Congress in 2300 meters, and our authorities have taken Canada to request so enthusiastically the ho all the necessary measures to control this nor of being your hosts on this occasion. A phenomenon and it will be completely elimin­ pioneer of soil mechanics in Mexico, a dis­ ated in the near future. I can assure you tinguished disciple of Casagrande and Terza- that when you will honor us again with your ghi and collaborator of the latter in the visit next time, our city will be in the same solving of serious problems such as that of place and it will still have the same climate. the subsidence of Long Beach, California; an outstanding engineer in our specialty, a brilliant teacher and extraordinary Rector Theory and experimentation, together with ob­ of our National University, a man whose servation of reality have helped us to under­ scientific curiosity impelled him to delve stand and solve our complex foundation pro­ into the field of nuclear energy, in conjun£ blems, and have created a basic expertise on tion with soil mechanics, produced an ambi­ which it is possible to undertake the subway tious and brilliant project of enormous na­ construction and the deep sewage collecting tional interest and importance which here has funnels, both works with no precedent in Mexi^ been named the Texcoco Project. He proposed can engineering, because of their magnitude the construction of a large, electric power plant which, combined with the desalting and and complexity, that are now being carried pumping of the ground water of Lake Texcoco, through by the government of Mexico City. would produce an intense subsidence of the lake bed and bring it to a lower level than Tn addition, the Government of our country, that of the present center of Mexico City through the Department of Water Resources and thus eliminating the danger of flooding of the Federal Commission of Electricity, has this part of the city. At the same time the been carrying out an intensive dam construc­ available water would be sufficient to dis­ tion program both for the purposes of irrig­ continue present pumping from the deep aqui­ ation as well as for electric energy. Most fers under the area and its subsidence would of these dams are of the earth or earth-and- thus be totally eliminated. rock type. In view of this we have given this item special attention. The electric plant would at the same time sa tisfy the need for increasing energy demands in order to keep up with the intense popula­ Of equal importance to us as the previous tion growth of our capital city. item, i8 Specialty Session No. 18, concerning soil mechanics and its application to the design and construction of roads and airport Many of you who knew him and enjoyed his runways, an activity into which our Depart­ pleasant and cheerful personality know that ment of Public Works has been putting great I am referring to Nabor Carrillo whose memo­ effort for many years. ry and works still live among us.

Basic research in our country, although on a Today, in the memory of Nabor Carrillo and modest scale, has developed in several fields in the name of the Mexican Soil Mechanics of general interest. One of the most outstan Society I am honored to extend to you our ding is that concerned with the study of most cordial welcome and to express to you stress-strain characteristics and shearing our sincerest wishes that your stay in our strength of rockfill masses. country will be both fruitful and pleasant.

On large size specimens subjected to pressures J. HERNANDEZ TERAN of up to 25kg/cm2. This research has been car ried out by the Federal ComiBSion of ElectrT Sr. Dr. Laurits Bjerrum, Presidente de la S£ city and the Engineering Institute of the Na ciedad Internacional de Mecánica de Suelos e tional UniverBity of Mexico and has stirred Ingeniería de Cimentaciones; Honorable Pres¿ up enough world intertost to merit a special dium; Señores Delegados al Congreso; Señoras session for the discussion of this item. y Señores.

Thus, we are certain that the exchange of ex A nombre del Presidente de Máxico, Lic. Gus­ periences between Mexican specialists and tavo Dfaz Ordaz, tengo el honor de dar a us­ those of other parts of the world will be be tedes, Delegados al VII Congreso de la Socios

96 dad Internacional de Mecánica de Suelos e in ros mexicanos, han desaparecido, pero otros geniería de Cimentaciones, una cordial bien­ muchos han continuado el estudio del suelo de venida, y trasmitirles los deseos del propio la ciudad, aportando nuevos y valiosos conoc¿ Primer Mandatario: que el Congreso que hoy mientos y experiencias, que han permitido re­ se inicia, sea de gran provecho para todos y solver problemas que parecían insalvables. que, los delegados extranjeros, durante su es tancia en nuestra patria, sientan la cordia­ La Secretaría de Recursos Hidráulicos, a par­ lidad con que nuestro pueblo recibe a todos tir de 1954, ha efectuado observaciones siste los visitantes, a quienes considera miembros máticas en estaciones piezométricas y nivela­ de una familia universal. ciones periódicas en el área de la ciudad de México, que han permitido registrar los hund¿ El hombre, desde épocas remotas, ha estudia­ mientos de la superficie. Con datos fragmen­ do los componenetes de la corteza terrestre, tarios, pero valiosos, se ha reconstruido la con fines muy diversos. Desde los que se en evolución anterior del Hundimiento hasta 1891 caminan al conocimiento del origen de la tie Ello nos permite afirmar que desde principios rra en relación a otros astros del universo del siglo.hasta 1938, el hundimiento de la an y su transformación a través de las edades tigua traza de la ciudad registró 4.5 centíme geológicas, hasta los de carácter eminente­ tros por año; después, a partir de 1938 fue mente utilitario, para localizar recursos ex aumentando, para llegar a un máximo de 46 cen plotables que, nuestro planeta, nos brinda tímetros en 1951 y, en los últimos 6 años, eT en múltiples formas. promedio anual se ha reducido a 7 centímetros.

Rocas y suelos componen la capa superficial A pesar de la amplia información disponible, de la corteza terrestre; de ellos, el hombre puede decirse que las predicciones sobre el toma lo necesario pará realizar obras mate­ futuro comportamiento del suelo de la ciudad riales, utilizándolos en su estado natural o de México, son simples especulaciones. Sólo sujetándolos, previamente, a procesos de puede afirmarse que, si se conserva o reduce transformación. la intensidad del bombeo de agua subterránea, el hundimiento disminuirá paulatinamente. El estudio de suelos y rocas, mediante la a- Por ello, nos esforzamos en aumentar el abas plicación de disciplinas técnicas, ha dado tecimiento de agua de la ciudad de México, — origen a especialidades científicas que hoy trayéndola desde fuera del área metropolita­ tienen aplicación universal, en muchos campos na, porque estamos conscientes de que dismi­ del desarrollo. nuir el problema del hundimiento, significa salvaguardar los cuantiosos intereses repre­ De esas especialidades, la Mecánica de Suelos sentados por la colosal obra que, a través con no más de medio siglo de antigüedad, ha del tiempo, ha integrado una ciudad con más logrado importantes avances y es herramienta de 7 millonea de habitantes. indispensable de la ingeniería, porque nos permite conocer cualitativa y cuantitativa­ Pero la expericiencia mexicana en Mecánica mente las propiedades de los suelos como de Suelos, no se ha limitado a la, ciudad y elementos de construcción, sea para susten­ Valle de México, porque, como he mencionado, tar estructuras o como parte integrante de esta ciencia interviene en todas las ramas ellas. de la ingeniería.

En México, la Mecánica de Suelos, data de Hacia el año de 1936, la antigua Comisión Na unos 40 años. Podemos afirmar que se inició cional de Irrigación, que más tarde se tran£ con uno de los problemas más apasionantes y formó en la Secretaría de Recursos Hidráuli­ de mayor interés, que puedan presentarse: el cos, dio un gran impulso a la Mecánica de suelo de la ciudad de México. Suelos, al aplicarla especialmente a la cons trucción de presas de tierra, en las cuales Nuestra capital está construida sobre relle­ se tiene una larga experiencia, por el gran nos lacustres, formados en su mayor parte número de estas obras construidas en México. por limos y arcillas, con elevada proporción Esta actividad ha propiciado el perfecciona­ de vacíos, que determinan muy alta compresi­ miento o desarrollo de equipos de laboratorio bilidad. Estos rellenos han sufrido hundi­ y procedimientos de construcción, propios de mientos de considerable magnitud, que, ahora nuestro país, que ustedes podrán observar du sabemoB, son ocasionados en gran medida, por rante su estancia en México. la extracción del agua subterránea, destina­ da al abastecimiento público y a los usos y En otras dependencias oficiales, encargadas aprovechamientos industriales. de realizar obras públicas, la Mecánica de Suelos también ha s^do objeto de particular En 1925, el ingeniero Roberto Gayol llamó la atención, e igualmente, han logrado signifi­ atención sobre este fenómeno y, más tarde, el cativos avances, aplicados a la cimentación ingeniero José A. Cuevas, precursor de los e^ de estructuras de muy diversos tipos y a la tudios de Mecánica de Suelos en nuestro país, construcción de terraplenes. señaló el camino para explicarlo. Correspon­ dió al doctor Nabor Carrillo, en 1948, demos­ En el sector privado, se han constituido em­ trar que la causa principal del fenómeno, era presas especializadas y los conocimientos y el abatimiento de niveles piezométricos pro­ la experiencia de los técnicos de estas em­ fundos, producidos por la extracción de aguas presas, han sido determinantes en la evolu­ subterráneas. Estos tres destacados ingenie­ ción que he mencionado.

97 Finalmente, nuestraa univerBidadeB e institu qualitative and quantitative knowledge of tos de enseñanza superior, también participan soil properties as construction elements ei­ en el desenvolvimiento de la Mecánica de Sue ther for the purpose of supporting structur­ los, que es materia obligatoria en programas es or as integral parts thereof. de ingeniería. Señoras y señores, me he permitido la liber­ In México Boil mechanics haB been in existen ce for some forty years. We may Bay that it tad de ocupar la atención de ustedes para ex ponerles en términos muy generales, el desa­ began with one of the most interesting pro­ rrollo en nuestro país de la ciencia que hoy blems, that of the subsoil of Mexico City. nos congrega. Pero f*l mayor interés de Méx¿ co, en este VII Congreso Internacional de Me Our capital is built on lake fillB formed cánica de Suelos e Ingeniería de Cimentacio­ principally by silts and clays with a high nes, es el de conocer los adelantos y expe­ void ratio which implies a high degree of riencias logradas en los países por ustedes compressibility. These fills have been, sub­ representados. Adelantos y experiencias que jected to subsidences of considerable magni­ podrán tener en México aplicación inmediata, tude which we know today are caused to a great extent by the extraction of ground wat­ porque felizmente, vivimos una etapa construc tiva de particular significación para nuestro er for public and industrial use. desarrollo económico, en el cual, pueblo y gobierno, estamos empeñados. Tenemos la con In 1925 Roberto Gayol called attention to vicción de que en reuniones como ésta, todos this phenomenon and later José A. Cuevas, a tenemos mucho que aprender y algo que ense­ predecessor of the study of soil mechanics in ñar. Muchas gracias. Mexico, suggested an explication of it. Doc­ tor Nabor Carrillo in 1948 demonstrated that the main cause of the phenomenon was the low­ ering of deep piezometric levels produced by Dr. Laurits Bjerrum, President of the Inter­ the extraction of underground water. TheBe national Society for Soil Mechanics and Found three outstanding Mexican engineerB are no ation engineering; Distinguished Presidium; longer with us, but many others have continued Conference Delegates, Ladies and Gentlemen. study of the city's'soil to contribute new and valuable knowledge for the solution of On behalf of the President of México, Gusta­ what seemed to be unsolvable problems. vo Díaz Ordaz, I am honored to extend to you, the Delegates to the Seventh Congress Since 1954 the Department of Water Resources of the International Society on Soil Mecha­ h&L carried out systematic observation in pi£ nics and Foundation Engineering, a cordial zometric Btations and periodic level measure­ welcome and to express to you the following ments in the Mexico City area, which have pr£ wishes of our Chief Executive: first, that vided us with surface subsidence measurements. this Conference which is opening today will -With fragmentary but valuable data a history be of great benefit to all of you, and se­ of this subsidence has been reconstructed to condly, that the foreign delegates during as far back as 1891. Thus we know that since their stay in our country will feel the cor­ the beginning of the century until 1938 the diality with which our people welcomes all center of the city subsided at a rate of 4.5 visitors as they consider them to be members centimeters per year. After 1938 it increased of a universal family. gradually, reaching a maximum of 46 centime­ 19 5 1 The Man, since remote times, has studied the ters in , and in the last six years the components of the earth's crust with various annual average has diminished to 7 centimeter^ aims-from those which lead to knowledge of In spite of the large amount of information we the origin of the earth with regard to other have at hand, it may be said that any predic­ heavenly bodies and its transformation tions regarding the future behavior of Mexico throughout the geological ages, to those of City's soil are purely speculative. We can a utilitarian nature, in order to find the only state that if the pumping rate is main­ exploitable resources with which our planet tained or reduced the subsidence will gradual provides us in multiple forms. ly diminish. For this reason we are making efforts to increase the city's water supply Rock and soil constitute the upper layer of by bringing it in from outside the metropoli­ the earth's crust, and from them man extracts tan area, because we know that by reducing the the necessary materials for his works by problem of subsidence we are safeguarding the using them in their natural state or subjec­ many interests involved in this enormouB pro­ ting them first to a transformation process. ject which has encouraged the growth of a city of 7 million inhabitants. The study of soil and rocks through different technical disciplines has given rise to scien However our experience in soil mechanics has tifie specialities which today enjoy univer­ not been limited only to Mexico City and the sal application in many fields of develop­ Valley of Mexico, because as I mentioned ment. earlier, this science is present in all fields of engineering. Of these specialties, soil mechanics, in ex­ istence for only half a century, has progre^ Towards the year 1936 the former National Irr¿ sed greatly and has become an indispensable gation Commision, which later became the. Dep­ tool in engineering since it provides us with artment of Water Resources, gave great impe-

98 tue to Boil mechanics by applying it specifi­ dès buts bien différents: buts qui mènent à cally to the construction of earth dams in l'étude de l'origine de la terre en relation which we have long experience because of the avec les autres astres de l'Univers et sa large number of such projects built in Mexico. transformation a travers les âges géologi­ ThiB activity has fostered the perfection or ques et buts de caractère notamment utilitai development of laboratory equipment and build re, pour situer les ressources naturelles - ing procedures apt for our country and which que notre planète nous offre sous des formes you will be able to observe during your stay multiples. in Mexico. Les roches et les sols forment la couche su­ In other official organizations entrusted perficielle de l'écorce terrestre; l'homme y with the construction of public works, parti­ puise ce qui lui semble nécessaire pour ac­ cular attention has been achieved in its ap­ complir des travaux matériels, en les utili­ plication to the laying of foundations of sant dans leur état naturel ou en les soumet structures of very varying nature and to the tant préalablement a des procédés de trans­ construction of embankments. formation. Par l'application de disciplinée techniques, In the private sector, specialized enterprises l'étude des Sols et des Roches a donné nais­ have been created and the knowledge and exper sance à des spécialités scientifiques qui ont ience of the technicians of these enterprises une application universelle dans les travaux have been very important in the evolution I de développement. have mentioned. De celles-ci, la Mécanique des Sols, jeune de Finally, our universities and institutes of 50 ans, a mené à bien des progrès importants higher learning are also taking part in the et c'est la l'instrument indispensable du development of Boil mechanics which has be­ Génie, car il nous permet de connaître, en come a compulsory subject in engineering qualité et en quantité, les propriétés des programs. sols comme éléments de la construction, pour supporter des structures ou comme une partie Ladies and gentlemen, I have attempted here intégrale d'elles. to Bpeak in very general terms of the devel- ppment in our country of the science which Au Mexique, la Mécanique des Sol6, date d' has brought us together today. However in environ 40 ans. Nous pouvons donc affirmer this Seventh International Congress on Soil qu'elle a commencé avec un des problèmes les Mechanics and Foundation Engineering, Mexico's plus passionnants et intéressants qui se soit main interst lies in knowing the most recent présenté; le sol de Mexico. developments and hearing of the experiences of the countries you represent, developments Notre capitale est construite sur des rem­ and experiences which could find immediate blais lacustreB, formés notamment de limons et application in Mexico since fortunately we d'argiles, avec une grande proportion de vides are living in a constructive stage of particu ce qui lui donne une compressibilite très lar importance to our economic development, élevée. Ces remblais ont subi des tassements in which both the Government and the people de magnitude considérable, dûs dans une gran­ are participating. We are convinced that de mesure - nous le savons aujourd'hui - au during meetings such as this we all have much pompage de l'eau souterraine, destinée à 1' to learn and something to teach. Thank you. usage et a la consommation publics et indus­ triels.

En 1925, l'ingénieur Roberto Gayol remarqua ce phénomène et plus tard l'ingénieur José A. M. Laurits Bjerrum, Président de la Société Cuevas, précurseur des étudeB de Mécanique - Internationale pour la Mécanique des Sols et des Sols dans notre pays, indiqua le chemin des Travaux de Fondations; Membres du Bu­ pour l'expliquer. En 1948, le Docteur Na- reau; Messieurs les Délégués au Congres; Mes bor Carrillo démonetra que ce phénomène était dames et Messieurs. dû au tassement de niveaux profonds et piézo- métrique9, produits par l'extraction des eaux Au nom du Président du Mexique, M. Gustavo spéculations. On ne peut qu'affirmer que, Diaz Ordaz, j'ai l'honneur, Messieurs les mexicains ne sont p±us parmi nous, mais beau Délégués au VIIe Congres de la Société Inter coup d'autres ont poursuivi l'étude du sol 3e nationale de Mécanique des Sols et des Tra­ la ville, en apportant des connaissances et vaux de Fondations, de vous souhaiter la des expériences nouvelles et précieuses, qui bienvenue et de vous transmettre ses voeux ont permis de résoudre des problèmes jusque pour que ce Congrus qui commence aujourd'hui, là obscure. soit de grand bénéfice pour tous et que, pen dant leur séjour dans notre pays, les délé­ Depuis 1954, le Ministère de Ressources Hy­ gués étrangers sentent la cordialité avec la drauliques a procédé & des observations systé quelle notre^peuple reçoit tous les visiteurs matiques dans des stations piézométriques et qu'il considère membres d'une famille univer a effectué des mesures périodiques du nivel­ selle. lement a Mexico, et qui ont permis d'enregis* trer des tassements de la surface. A l'aide L'homme, depuis les anciens temps, a étudié de données fragmentaires mais précieuses, on les composante de 1'écorce terrestre avec a reconstitué l'évolution du tassement jusqu'

99 en 1891. Ceci nou6 permet d'affirmer que de­ Congres International de Mécanique des Sols puis le début du siècle, jusqu'en 1938p le ta et des Travaux de Fondations, est celui de ssement de l'ancien aite de la Ville enregis­ connaître les progrès récents et les expé»- tra 4.5 centimètres par an; ensuite, a partir riences qui pourront avoir au Mexique une de 1938, il augmenta et atteignit un maximum application immédiate, car heureusement, nous de 46 centimètres en 1 9 5 1 , et dans les der­ assistons a une etape créatrice très impor­ nières six années, la moyenne annuelle s'est tante pour notre développement économique, réduite a 7 cms. dans lequel^le peuple et le gouvernement se sont consacrés. Nous sommes persuadés que Malgré la vaste information a notre portée, dans des réunions semblables a celle-ci, nous on peut dire que les prédictions pour le fu­ avons tous beaucoup à apprendre et quelque tur du sol de Mexico ne sont que de simples peu à enseigner. Merci beaucoup. souterraines. Ces trois éminents ingénieurs l'intensité du pompage de l'eau souterraine est maintenue ou réduite, le tassement dimi­ nuera lentement. C'est pour cela que nous réalisons un gran effort pour augmenter 1' L BJERRUM approvisionnement de l'eau de Mexico, en la faisant venir de l ’extérieur de la zone urba M r. Joae Hernandez Teran, Representative of the ine; nous sommes en effet conscients du faiT President of M exico and M inister of H ydraulic que diminuer le problème de tassement impli­ Resources,

que sauve-garder les nombreux intérêts repr£ M r. Enrico Tam ez, President of the O rganizing sentés par cette oeuvre colossale, qui, a C om m ittee, travers le temps, a contribué "à former une ville de plus de 7 millions d'habitants. Ladies and G entlem en :

Mais l'expérience du Méxique, en Mécanique On behalf of a ll those present I w ish to thank des Sols, ne s'est pas limitée a la ville et M r. Teran and M r. Tam ez for those inspiring a la Vallée de Mexico, car, comme je l'ai w ords of w elcom e. It is a great pleasure for our déjè dit plus haut, cette science intervient S ociety and for a ll the participants in this confer ence dans toutes les branches du Génie. to be able to assem ble in M exico C ity. I express our hearty thanks to M exico, to its governm ent, to Vers 1936, l'ancienne Commission Nationale d' the O rganizing C om m ittee and to all those collea ­ Irrigation, qui devint plus tard le Ministère gues who by their contributions have m ade this con­ de Ressources Hydrauliques, donna un grand ference possible. essor a la Mécanique des Sols, en l'appli­ quant essentiellement a la construction des M exico C ity and m y own city O slo in N orw ay, are, barrages en terre, que nous connaissons bien as far as I know, the two capitals in the w orld whi ch grâce à notre expérience et au nombre consi­ have the m ost difficu lt foundation conditions, and dérable des travaux de ce genre construits for som e tim e there has been a sort of com petition au Mexique. betw een them as to which deserves the position of number one. W hen at hom e and when speaking to an Cette activié a favorisé le perfectionnement audience w here no M exicans are present, m y et le développement d'équipement pour labora national pride m ay have tem pted m e to give Q slo the toires et de procédés de construction, -qui leadership. But to be very honest, I know the M exic o nous sont propres et que vous aurez 1'occa­ C ity clay su fficiently w ell to appreciate that M exi co sion de voir pendant votre séjour au Mexique. C ity, beyond any doubt, is the w orld-record holder for d ifficu lt soil conditions. Dans d'autres bureaux officiels, chargés de mener a bien des travaux publics, la Mécani­ One of the big attractions of this conference has b een que des Sols a repu une attention spéciale to com e to M exico C ity to see and learn about the et a accompli des progrès de grande portée foundation problem s of the exceptional M exico C ity dans son application a la fondation de struc clay. In addition, the beauty of the city and the tures de types très divers et è la construc­ colou rfu l population have increased our desire to tion de terrassements. have a m eeting here, and caused our ladies to accom pany us in such great num bers. Dans le secteur privé, des entreprises spé­ cialisées ont été crées, et, la connaissance I greet all participants and m em bers of the large et l'expérience des techniciens de celles-ci fam ily of soil m echanics. W e have all been look­ ont été importantes dans l'évolution dont ing forw ard to seeing old friends and m aking new j'ai déjU parlé. acquaintances. I hope we shall have a pleasant m eeting in the sam e spirit that dom inated our p re­ Finalement, nos universités et nos instituts vious conferences. d'enseignement supérieur prennent part égale ment au développement de la Mécanique des Fifty Years of Soil M echanics Sols qui est une matière obligatoire dans les programmes du Génie. E xactly 50 years ago the m odern science of soil m echanics was born. It was on a day in M arch 1919 Mesdaaae et messieurs, j'ai voulu vous expo­ in Istanbul that Terzagh i, w hile sitting on a rock and ser en termes très généraux le développement, looking out over the G olden H orn, suddenly visu aliz ed dans notre pays, de la science qui nous réu­ what was needed to obtain a rational approach to th e nit ifci aujourd'hui. Ce pendant, le plusg problem s involved in earthw ork and foundation engin ­ grand intérêt du Mexique, pendant le VII eering. He realized that progress depended entirely

100 on the developm ent of testing equipm ent and m ethods ional Society has grow n from a few hundred m em bers w hich could give a quantitative m easu re of the m ech a­ in 1936 to about 9,000 today. nical properties of the soils involved. On a sheet of paper he scribbled down a num ber of different tests The explanation of the explosive developm ent of soi l to be carried out, m ade som e sketches of the equip­ m echanics is clearly that it could offer assistance m ent and suggestions for the interpretation of the within a field w here there existed a desperate need test resu lts. Those events in M arch 1919 represent for help. Actu ally, this need was so great that the the birth of m odern soil m echanics, and thus we can results of Terzagh i’ s findings w ere applied alm ost as celebrate 50 years of soil m echanics. soon as they appeared, and w ell before design proce ­ dures had been developed and their relia b ility ade­ This anniversary gives m e the opportunity to look quately tested. W e can thus recognize a first gener at­ back over the past 50 years in an attem pt to find o u t ion of soil engineers who developed a true art in a pply­ to what degree Terzagh i’ s vision in 1919 has com e ing the new ly acquired know ledge to practical prob­ true, w ith the hope that review ing the experience o f lem s. The tools they had at their disposal w ere an the past m ay lead to conclusions that can guide us in im proved understanding of the properties of soils a nd

the studies w hich lie ahead of us. rocks, som e sim ple testing equipm ent, Terzagh i’s qu alitative analysis of the variou s phenom ena, and - B efore em barking on our review , perm it m e to try as tim e went by - the experience gained from m is - to express the m ain content of Terzagh i’ s w ish- takes m ade by them selves or by their colleagues. Th e dream when in 1919 he drew up the outline of the ne w early success and later progress of the science of science of soil m echanics. soil m echanics is due entirely to the achievem ent o f these pioneers headed by Terzagh i him self. A few years earlier Terzagh i had failed in his attem pt at correlatin g the behaviour of foundations As the years went by, the tools w ere gradually deve lope w ith the geological ch aracteristics of the soils in ­ which would perm it soil m echanics to proceed from volved. He now hoped to establish such a correlat­ the firs t to the second stage, and the intu itive ion replacing the visu al geological characteristics approach to be replaced by the m ore system atic theo ­ with their significant engineering properties as m e a­ retical approach. B y the end of the thirties the de vel­ sured in experim ents. He thus envisioned a first opm ent of the new science had proceeded so far that stage in the developm ent during which problem s woul d Terzagh i’ s dream of 1919 approached its realization ; be solved by an em pirical approach based on previou s and when the inferno of W orld W ar II finally cam e t o experien ce and on know ledge of the relevan t soil an end, the way was paved for a second generation o f properties. soil engineers, a generation which had at its dispo sal m ost of the tools requ ired to solve the problem s in C learly, Terzagh i also visu alized a second and earthw ork and foundation engineering by the use of u ltim ate stage in the developm ent, when the what w e m ight call " the approach of applied m echan ics" problem s would be solved by a m ore rigorous approach sim ilar to that which had already been Twentyfive years of rational approach su ccessfu lly applied by stru ctu ral engineers in the design of buildings and bridges. This approach Tw enty-five years have elapsed since then, and by would requ ire borings to be carried out to obtain a now a considerable amount of experience has been pictu re of the geological conditions and to perm it collected which perm its a com parison of theoretical sam ples to be taken from the variou s soil strata. forecast and actual behaviour of foundations. W e These sam ples would be tested in the laboratory to should th erefore be able to evaluate how w ell the t heo­ determ ine their m echanical properties. N um erical retica l approach has w orked in practice. answ ers to the problem s would be calculated theoret ­ ically by the m ethod of applied m echanics after int ro­ O bviously, we w ill not include in our evaluation an y ducing into the th eoretical equations the relevan t u n critical application of theories and test resu lts . In soil properties as found in the laboratory. By this dealing with a m aterial like soil, satisfactory res u lts approach Terzagh i envisioned that it would be of an analysis can be expected only if the analysis is possible to com pute settlem ents of buildings, safet y based on a carefu l interpretation of the geological factors of slopes, the amount of w ater flow ing be­ conditions, on equally carefu l testing of the sam pl es, neath dam s, and earth pressu res on retaining and finally on use of sound judgem ent to assess the stru ctures, and so on. effect of the variou s factors not d irectly included in the analysis, such as non-hom ogeneity of soil strat a , Th e first period of pioneering scattering and errors in test resu lts, represen tivi ty of sam ples and so on. Sim ilarly, we w ill exclude And now w e can start our jou rney into the past. It can cases in which the geological conditions preclu de t he im m ediately be said that the m ost im pressive con­ possibility of m aking an accurate perform ance fore­ clusion which em erges from this review is that the cast. past 50 years have been a convincing success for th e new science of soil m echanics. Terzagh i’ s first creative period of fundam ental studies and testing in W ith these lim itations the experience of the past l eads the early tw enties was quickly follow ed by what we to the conclusion that there are num erous exam ples m ight call ’ the firs t stage of application’ during w hich which dem onstrate our ability to analyze a num ber o f the new discoveries w ere su ccessfu lly used in prac­ essential problem s and predict in a logical and rat ion­ tice. W hen the first international conference on so M al m anner the engineering behaviour of soils in pra c­ m echanics and foundation engineering was held at tice. H arvard U niversity in 1936, soil m echanics becam e firm ly established as a new fundam ental science in th e In soft clays w e can, for instance, predict the b ea r­ field of civil engineering, and creation of our Int er­ ing capacity of footings, and the stab ility of brac ed national Society becam e possible. Since then soil excavations. W e can estim ate the m agnitude and rate m echanics has found its place in our com m unity in a of settlem ents of footings and em bankm ents on soft w ay which is fam iliar to a ll of you, and our Intern at­ clay, provided the load is not too sm all. In soils

101 such as sand and gravel, silt, glacial till, and al so im prove our procedures. in slightly overconsolidated clays, satisfactory resu lts are obtained trom calculations for the stab ili­ Settlem ents of buildings on clay ty of slopes and for earth pressu res on retaining The m ost interesting conclusions em erged from a structures. In m ost pervious m aterials we are able com parison between observed and predicted settle­ to predict the flow of w ater beneath dam s and towar ds m ents of buildings and em bankm ents built on the sof t excavations. Equally satisfactory are the forecast of m arine clays which are the m ost w idespread foundat­ the behaviour of earth and rock fill dam s and, gen e r­ ion soils in N orw ay. The com parison led to the sur­ ally speaking, on the basis of laboratory tests we can prising resu lt that the agreem ent betw een predictio n predict the com paction behaviour of soils. Our and observation was very good in all cases w here th e m ethods and procedures for design of pile foundat­ settlem ents w ere very large, i.e. , m ore than 20-30 ions w ork reasonably w ell. cm , and when this was the case the theory of consol ­ Thinking again of Terzagh i sitting outside R ob ert idation predicted the rate of settlem ents reasonabl y C ollege in Istanbul in 1919, we can now conclude w ell. H ow ever, in all cases w here the settlem ents that he was righ t when he envisaged that u ltim ately w ere sm aller than 15-20 cm , the predicted settle­ a stage of developm ent would be reached at which th e m ents w ere larger than the observed ones, the ob­ problem s in earthw ork and foundation engineering served rates of settlem ents w ere m uch faster than would be solved by the classical approach of applie d the theoretical forecast, and the sm aller the settl e­ m echanics. O bviously, over the years we have m ents, the greater the discrepancies. To illu strate learned to appreciate that m any of our problem s are the order of m agnitude of the discrepancies, it was so com plex that the possib ilities of using su ccess­ found that the predicted settlem ents w ere in gen era l fu lly a theoretical treatm ent are lim ited in practi ce. 4-8 tim es the observed values. In other w ords, the In such cases it has, th er«fore, proved necessary t o agreem ent was poor when the applied pressures w ere develop less rigorous sem i-em pirical procedures. sm all, but good when the pressu res w ere relatively N evertheless, we have today definitely grown out of large. the period in which problem s w ere solved by guess­ w ork and intuition. The procedures available in As this problem is of vital im portance to N orw ay, m y applied soil m echanics represent a logical and colleagues and I recently m ade a rather com prehen­ rational approach which can be described in text sive study to find the explanation for this discrep ancy. books, can be taught in u n iversities and can be The studies dem onstrated that there w ere no errors applied by a capable civil engineer after he has ob - m ade in the theoretical analysis : the m istakes w er e tained som e training in practice. m ade when assum ptions about the com pressibility of « the clay w ere introduced into the theory. In fact, the As soon as we have reached this conclusion, we m ust , m ajor m istake was m ade when it was assum ed that nevertheless, adm it that there is also available a the clays w ere norm ally consolidated, and that thei r relatively large number of carefu lly studied cases in com pressibilities could th erefore be adequately des ­ which the classical approach of soil m echanics prov ed cribed by a straight line in the conventional con so li­ to be a failu re. In these cases a com parison betwee n dation diagram showing void ratio against logarithm a carefu lly perform ed prediction and the actual b e­ of pressu re. haviour has shown discrepancies so large that they could not be explained by inhom ogeneities of the so il From a detailed study of the field behaviour of sof t strata, nor by the scattering of the test resu lts. clays w e have been able to prove that in term s of i ts engineering properties no m arine clay is tru ly For instance, there are numerous exam ples dem on­ ’ norm ally consolidated’ , even when it never w ere strating our inability to predict the am ount and ra te subjected to greater loads than the present overbur den. of settlem ent of structures on heavily overcon soli­ E xcept for very young sedim ents all clays have unde r­ dated clays. M oreover, in our soft norm ally con­ gone som e changes since they cam e to equilibrium solidated m arine clays in Scandinavia, the m ethods under their present overburden pressures. The con­ for predicting settlem ents and the rate at w hich th ey sequence of these changes is that the clays have de ­ occur, fail com pletely when the applied load is rel a­ veloped a * reserve resistance* against further com ­ tively sm all, as is usually the case for buildings. pression. The clays have becom e brittle and cannow carry an additional vertica l load without undergoin g

W ith respect to the slope stability problem , the any significant volum e change, provided the load do es classical approach seem s to fail in these sam e two not exceed the developed reserve resistance. It is m aterials. W e are unable to calculate the stability only for loads exceeding this critica l valu e that t he of natural slopes in h eavily over consolidated plas tic clay behaves as if it w ere truly norm ally consolida ted . clays and clay shales, and we are no better off whe n facing the problem of analyzing the stab ility of The special properties which these soft clays have natural slopes in soft, norm ally consolidated, m ari n e developed since their deposition, causes them to be ­ clays of Scandinavia. have as b rittle m aterials. D uring the process of sam pling, handling and testing the clays, these ess en­ In fact, the number of case records, which show a tial features m ay very easily be destroyed. For thi s discrepancy betw een forecast and actual behaviour, reason the special properties of norm ally consolida ted is so large that there is every reason for us to tr y to clays have m ostly been overlooked or m isinterpreted find out what is w rong, and then to im prove our pro ­ in the past. It was actually only after having obta ined cedures accordingly. a deeper understanding of the true properties of n o r­ m ally consolidated clays that it becam e possible to R ecen tly, I had an opportunity to study in detail design suitable sam pling and testing equipm ent and to several problem s which w ere not successfully carry out adequate tests to prove the existence of tackled by conventional procedures. The review of these special properties. these case records led to very d ea r conclusions which m ay be able to guide us in our attem pts to From these studies w e have thus learned that the pr o­

102 perties of norm ally consolidated clays are much m or e In the first place, these clays have a system of de ­ com plex and diverse than supposed hitherto. The fects and are not 'in tact' . Already in the m id ­ sim plified pictu re of the properties of a norm ally th irties it had been appreciated that som e overcon­ consolidated clay introduced into a conventional se ttle­ solidated clays are fissured and that they con­ m ent analysis proves thus to be a satisfactory tain joints, surfaces, or m ore-or-less fully develo p­ approxim ation only if the applied load is larger co m­ ed slip surfaces. O bviously, such defects represent pared w ith the reserve resistance that the clay m ay su rfaces of weakness which can reduce the strength have developed during its geological life, and in s uch of the d ay-m ass to much below that of the intact cl ay. cases the classical approach predicts the correct Thus, in m any civil engineering w orks the behaviour settlem ent. For sm all loads, norm ally consolidated of the clay is governed largely by the strength alo ng clay m ay behave very differently from each other in such discontinuities. U nfortunately, the effect of the accordance with such factors as their plasticity, t h eir fissu res does not appear in conventional laboratory geological age, and the physico-chem ical changes to tests on sm all sam ples. W e can m easure the strength which they have been subjected. These special pro­ of the intact clay, or we can m easu re the residu al s hear perties of the differen t types of norm ally consolid ated strength in a fu lly developed sliding su rface, but w e clays can be detected only from a study of their fi eld have no m eans of determ ining w here in between these behaviour. As soon as the properties are known and extrem e lim its the actual shear strength of the cla y adequately described, sam pling and testing procedur es lies . m ight be designed to m easu re them and theories can be developed to predict the field behaviour. Having In the second place, these clays are b rittle and st rain reached this stage, there should be no m ore discrep ­ sensitive. They fail at a very sm all strain, and wh en ancies betw een forecast and actual field perform anc e. they are strained beyond failu re the shear strength drops rapidly and ultim ately reaches a residu al val u e which in the plastic clays is very low . As pointed ou t So m uch for the norm ally consolidated clays. I by Skem pton in his Rankine Lectu re in 1964, clays m entioned earlier that com parisons of predicted and w ith this property are likely to fail p rogressively , actual settlem ents on overconsolidated clays indica te and Skem pton th erefore concluded that slides in ove r- that the settlem ent calcu lation is at least as inac cur­ consolidated clays are in m any cases preceded by th e ate in clays of this type as in norm ally consolidat ed progressive developm ent of a failu re surface along clays. The explanation of this discrepancy is still which the shear strength is reduced to values nearl y not know n; but it is not u nlikely that part of the in­ equal to the residu al shear strength. accuracy of our present concepts arises because we ignore the effect of the large horizontal stresses The third property is the one which probably in iti­ gen erally existing in overconsolidated clays as a ates the progressive failu re and which governs the resu lt of their geological stress history. As em pha ­ rate at which the progressive failu re develops. In sized by D r. N . Sim ons in a paper to this conferenc e, connection w ith the studies of a landslide which the effect of a large horizontal stress is to reduc e the occurred in 1963 in the w estern part of N orw ay, we vertical com pression of the clay. This reduction do es w ere forced to conclude that the progressive failu r e not appear in the resu lts of conventional consolida tion was initiated by stress concentrations at the toe o f tests which are carried out with sam ples that have the slope and that the stress concentrations w ere d ue been unloaded laterally b efore being placed in the to the high lateral stresses resu lting from the tre ­ equipm ent. m endous pressu res to which the clay was subjected at an earlier stage of its geological history. W e

Our present approach thus em ploys concepts about found also that the progressive developm ent of a co n­ the properties of overconsolidated clays which are too tinuous slip su rface was dependent on the ab ility o f sim plified and crude. Im proved settlem ent predict­ the clay to strain la tera lly when unloaded, i. e. , on ions becom e possible in overconsolidated clays only the recoverable strain energy. W e still have no when new equipm ent and procedures have been de­ m eans of m easuring this property and describe it signed to perm it m easu rem ents of the lateral adequately, but clearly it is strongly dependant on what the clay has experienced during its geological pressu res existing in the ground, and after new th eories have been developed to take into account t he life, including such factors as the degree of overc on­ solidation, the form ation of diagenetic bonds and t he effect of the in itial stresses on the settlem ent. degree of w eathering.

Stability of natural slopes in clay O bviously, the overconsolidated clays and clay shal es have properties which are very com plex and which ar e Fin ally, let us consider our ability to predict the th erefore difficu lt to m easu re and to express in su ch danger of slides in natural slopes and cuttings in term s that can be considered adequately in a th eore ti­ heavily overconsolidated plastic clays and clay cal approach. I am unable to predict whether we w il l shales. Com pared with the other problem s I have ever be able to produce an analysis of the stab ilit y of m entioned, it is this problem that in the past show s a slope in these intricate clays which rea listica ll y the largest discrepancies betw een predicted and takes into account all the essential factors, or wh ether actual behaviour. Fortunately, a qualitative explan ­ w e w ill have to be satisfied with a less rigorou s a nd ation can be given of why the procedu res which w ork m ore em pirical approach. H ow ever, one thing I do in other soils fa il com pletely in the overconsolida ted know for a fact, that further progress depends on o u r clays and clay shales. Again, the explanation prove s ab ility to m easu re and describe the true properties of to be that this fam ily of clays possess som e very the clays as they are m anifested in the ways in whi ch com plex properties that invalidate any conventional they behave in nature. th eoretical .analysis, and w hich in addition prove to be either im possible or, at best, very difficu lt to Conclusions detect and m easu re in a conventional laboratory tes t. The properties that distinguish the heavily overcon - So fa r my review has been som ewhat one-sided, as it solidated clays and clay shales from other clays ca n has dealt exclu sively with problem s in clay. I coul d be sum m arized by three points : equally w ell have illu strated m y points by problem s

103 involved in predicting the flow of w ater through fi ne­ try to explain to a geologist som e of the factors i n­ grained soils or by problem s of predicting the beha vi­ fluencing the m echanical properties of a clay, he our of m asses of hard fissu red rock. In each cate­ would only understand what w e w ere speaking about gory predictions based on a classical approach of if he had a com prehensive background in soil engin­ applied m echanics frequ ently fa il com pletely, and eerin g. It is quite obvious that w e cannot expect t he again it is not the theory which is w rong. The geologist to solve our problem s for us ; on the con ­ approach fails on account of lack of know ledge of t he trary, the field of research I am speaking about it so actual in-situ properties of the rock or soil in intim ately related to the m echanical properties of qu estion. soils that the success of any study of the engineer in g geological properties of a soil presum es an intim at e Let m e now end this address by sum m arizing in two understanding of the fundam entals of the m echanical points m y conclusions from this critical voyage bac k properties of soils com bined with a com prehensive through the 50 years of m odern soil m echanics. know ledge of their field behaviour when subjected t o stresses or strains. In the first place, w e can draw the unconditioned c on­ clusion that the developm ent of the science of soil If, at the end of m y period as president of our In t er­ m echanics has exceeded even the m ost optim istic national Society, I can convey a m essage to our expectations which Terzagh i m ay have m ade when, m em bers, it is to appeal to the younger generation 50 years ago in Istanbul, he tried to envision the to concentrate their efforts on a study of this ext rem e­ future of this new field of engineering. W ithin 25 ly im portant field of research. W e are, in soil years soil m echanics was w ell on its way to produc­ m echanics, dealing with soils and rocks which are ing rational m ethods and procedu res to replace the com plex products of nature and, tru ly speaking, the earlier period’ s m ore intuitive approach, based on concepts we have developed so far about their prope r­ partly uncorrelated experience. Today there are ties and behaviour are so prim itive and sim plified available to the soil engineer the tools requ ired t o that I dare to postulate that w e have b arely starte d solve a substantial part of the problem s he has to to understand the true properties of som e of the m o re face in his practice, and experience has dem onstrat ­ com plicated types of m aterials. It is research in t his ed that these tools can be used w ith confidence for direction that is requ ired to develop our science predicting the actual behaviou r of foundations. fu rther, so that we can gradually replace the rem ai n­ ing unreliable design procedures with m ore adequate In the second place, the review has also dem on­ and accurate approaches. strated that if the available approaches are applie d to certain types of problem s involving certain type s I m ay therefore com plete this address by expressing of soils, they fail com pletely. The available case the hope that this international conference m ay con ­ records illu strating this finding show discrepancie s tribu te to this u ltim ate goal. between theory and practice which in m any cases are very serious and, indeed, much greater than can be explained by inhom ogeneities or scattering of test A. CASAGRANDE resu lts.

The explanation of these discrepancies betw een p re­ Mr. José Hernández Terán, Minister of Hy­ dicted and actual behaviour has proved to be due no t draulic Resources and Representative of the to errors in the theories : in every case it has pr oved President of Mexico; President Laurits to be the resu lt of a lack of appreciation of the t ru e Bjerrum; President Enrique Tamez; Fellow properties of the soils. In m any cases the picture of Members of our Seventh International Confer the properties on which the conventional soil m echa n­ ence; Ladies and Gentlemen. ics approach was based had been far too sim plified and deviated so m uch from the actual pictu re that i t The Organizing Committee has asked me to ad precluded the possib ility of any rea listic predicti on . dress you in memory of Nabor Carrillo; to W hen w orking with these problem s, one obtains fhr. tell you about a book which his colleagues im pression that veTy m any natural soils w ithin thei r have just published in his honor, and then to geological life have developed a num ber of special present to Mrs. Carrillo a copy of this book properties of an alm ost unbelievable diversity, whi ch w ere so ingeniously concealed as to rem ain undetect ­ It is not easy for me to tell you in a few ed in conventional field and lab oratory testing. minutes about the accomplishments of this brilliant scientist, engineer, educator, ad O bviously, there exists a field of research to whic h ministrator, and humanitarian - about a very too little attention has been paid in the past, and remarkable man and my very dear friend. Let which is essential if soil m echanics is to be su cce ss­ me start by recalling that Nabor Carrillo fu lly applied to natural clays. This field concerns mentioned to me in Paris, in 1961 at the time the study of natural soils w ith the purpose of unde r­ of our Fifth Conference, that he would like standing, describing and m easu ring the properties to have this Seventh Conference meet in Mex¿ which are significant for the field of soil m echani cs. co City. Indeed, we owe it to his initiati­ To com e as close as possible to the true properties , ve and his friendship with the highest Cover these studies w ill have to concentrate on field rat h er nment officials of Mexico that we are privT than lab oratory behaviou r, and they w ill have to in ­ leged to enjoy now the hospitality of our clude the investigation of all geological factors t hat Mexican colleagues. If fate had not taken m ay have influenced the relevan t properties. him away from us so prematurely, Nabor Ca­ rrillo would see today his cherished dream W e can probably find no better name than E ngineer­ fulfilled. ing G eology for this field of research, in spite of the fact that it has no resem blance to E ngineering G eol o­ I met Carrillo for the first time in June gy as understood by a geologist. Actu ally, should w e 1936, just one-third of a century ago, when

I04 he was the youngest member of the Mexican Energy Commission, he continued to maintain Delegation to our First Conference which hie interest in soil mechanics. Finally, by then met at Harvard University. A few years cross-fertilization of such widely separate later, from 1940 to 1942, Carrillo studied areas of engineering science as nuclear energy at Harvard University where he quickly caught and soil mechanics, he envisioned the poseibi^ the attention and earned the enduring friend lity of curing simultaneously the two grave Bhip of the late Karl Terzaghi and the late illnesses of Mexico City, namely the lack of a Dean of our School Harold Westergaard, and sufficient water supply and the continuous of myself. In 1942 Carrillo was awarded his sinking of the city. When Carrillo first ex­ Doctor of Science degree from Harvard Univer plained to his colleagues his concept of what sity on the basis of a brilliant thesis. He is now called the Texcoco Project, even very returned to Mexico, and was immediately ap­ knowledgeable engineers doubted whether such pointed to a professorship at the National an ambitious project could be realized. How­ University of Mexico, and within a few years ever, all who have been connected with the he became Director of Scientific Research of comprehensive Texcoco investigations are now his University. Then followed eight long in agreement that the feasibility of this pro and arduous years during which he guided his ject ib proven. TheBe investigations are sum University as Rector through the period of marized in several very interesting papers in its most rapid growth. Finally, in the last this volume . The execution of this project, phase of his professional career, he served which I believe is now assured, will be a as member of the Mexican Nuclear Energy Com­ worthy monument to Carrillo's genius. mission, and on other special assignments as a scientific ambassador-at-large to his Gov­ Nabor Carrillo's remarkable combination of ernment. talents and human qualities explain hiB wide range of achievements in science, engineering, During his tenure as Director of Scientific education, and human affairs. He combined the Research, Carrillo was instrumental in prom­ qualities of a clear-thinking, mathematically oting comprehensive investigations on the un gifted scientist, the vision of a statesman, usual subsoil conditions of Mexico City, anil and an engineer's sound judgment of what is in initiating extensive observations of ^he humanly possible. His greatest achievements continuous subsidence of this city. By meane depended particularly on his vision, his of his own investigations Carrillo was able ability to foresee clearly far into the fut­ to prove beyond any doubt that this general ure the needs of his country and of his fel­ subsidence was caused primarily by the exten low men, and on his extraordinary talent to sive extraction of, groundwater. He publi­ convince those, whose support he needed, an shed his findings in his classical paper THE ability which in turn was based on a deep un INFLUENCE OF ARTESIAN WELLS IN THE SINKING derstanding of human nature and a genuine anS OF MEXICO CITY which is reproduced in this warm sympathy for the welfare of his fellow volume. This paper had a catalytic effect men. In his presence men with divergent, on the foundation engineers of Mexico and it even conflicting Bhort-term goals, suddenly led to the decision by the City Authorities became interested in cooperating on a long­ to prohibit the drilling of new well6 within term project for the welfare of all people. the city. Merely by his presence he seemed to create a cohesive bond between men who otherwise could A few years later, Carrillo investigated a not find a common basis for the solution of similar problem, namely, the causes of the difficult problems. ThiB magnetic spell sur subsidence of the City of Long Beach in Cali^ rounded him wherever he went. He was a human fomia. For this purpose he developed a catalyst par excellence. novel solution of the theory of elasticity which he termed the "tension center theory", This volume (which will be available in the and with which, he was able to prove that the book store on the ground floor) contains in settlements were caused by the pumping of oil Part I a selection of Carrillo's important from three separate zones located at depths contributions in soil mechanics, and in Parts of many thousands of feet. Carrillo's reports II and III a number of contributions by six on these investigations including his tension other well-known Mexican engineers on the eub center theory are now published for the first sidence of Mexico City, which was the topic time in this volume. of Nabor' b first major scientific work, and on the Texcoco Project, which was Nabor's Carrillo has inspired many promising Mexican last and most important achievement as an students to specialize in soil mechanics and engineer. he was successful in obtaining sufficient financial support for reBearch in foundation It gives me great pleasure to present to you, and earthwork engineering. It is largely due dear Elena, and to your children, this book to his efforts that Mexico has achieved its which was made possible by the Texcoco Project eminent position in theoretical and applied under the auspices of the Ministry of Finan­ soil mechanics. ce, or to use itB correct name -La Secreta­ ría de Hacienda y Crédito Pdblico. After his demanding administrative duties at the University forced him to discontinue hiB ( Then Dr. Casagrande proceeded to surrender private consulting practice, and later after to Mrs. Elena Carrillo and her oldest son, he accepted the key position with the Nuclear copies of the book.)

I05 CLOSING SESSION SEANCE DE CLOTURE

Castillo de Cha putt epee August/Août 29, 1969

Participe nts de Arellano, who carried on his shoulders the heaviest load and responsibility of the orga­ PROF. ENRIQUE TAMEZ G., Präsident of the Organizing Committee nization work. Also outstanding was the par­ ticipation of Daniel Reséndiz in the Papers Subcommittee Luis Vieitez and Alfonso Rico in the Main Sessions and Specialty Sessions D R. L A U R IT S B JE R R U M , President of the International Society for Subcommittees. Dr. Ratil Marsal, President of Soil Mechanics end Foundation Engineering our Mexican Society on Soil Mechanics, who maintained alive the interest of all the mem­ bers of this Society during the organization and development of our Conference. D R. R A L P H B. PECK, elected President of the International Society for Soil Mechanics and Foundation Engineering Very important was, indeed, the economic support given to us by various governamental authorities through their different branch offices, besides the desinterested participa­ PROF. JEAN KERISEL, in the name of French-speaking Conference tion of many private Concerns, as well as the Members Companies participating in the exhibition that took place at the U m d a d de Congresos del Centro Medico Nacional.

MR. GILBERTO VALENZUELA, Minister of Piiillc Works To all of them, I want to express the sin­ cere gratitude of the Organizing Committee.

M RS. L U C IA G U R I, in the name of Latinamerican ladies Very soon all of you will be in your way back home, taking along many souvenirs from México. On behalf of my Mexican collègues too I would like to aBk you to take with you M RS. M A N A N , in the name of American ladies the most valuable of our souvenirs, our friendship.

To all of you " Bon Voyage

E. TAMEZ G.

L. B J E R R U M Dr. Bjerrum, Dr. Peck, Ladies and Gentlemen:

M r. G ilberto Valenzuela, M inister of Public W orks, Today we have successfully reached the end of our Conference jouraey. I believe all of D ear M r. Tam £z, President oi the Organizing you will agree with me, that if we take all Com m ittee, the positives aspects of the Conference deve­ Ladies and G entlem en: lopment and substract all those little nega­ tive details, the balance is favorable and This Conference has been a large-scale experim ent we all can be proud of the outcome, of on how a conference ought to be run - and one of th e this Conference. This result is the conse­ boldest experim ents has been to sandwich between th e quence of the active and enthusiastic pârtici cheese and the coffee the Presiden t's official repo rt pation of all of you, and the ample colabora- on the state of affairs of our Society. tion of the Organizing Committee members as well as many members of the Mexican Society Thirty-three years have elapsed since a sm all group on Soil Mechanics. of pioneers m et together at H arvard. The organizat­ ion which they created gathered m om entum at such a To mention all the names of those who cola- rate that even the M exican O rganizing C om m ittee was borated with us, would mean to read a long unable to know with any exactitude whether we would list, but I consider it is of elemental jus­ have 1800 at our opening session or m aybe 2400! tice to stand out Borne of them: LuiB Ramirez W e are so much indebted to these early pioneers tha t

107 I feel you would like m e on your behalf to greet in di­ to ob serve that in m y opinion you went slightly too far vidually those of them who are with us to-night. I w ill in your experim entation when, in order to study how a call on them one by one, and on behalf of the O rgan iz­ conference can adjust to the lack of technical appl ian­ ing C om m ittee I have the pleasure to present to the m ces, you cut out the pow er-su pply to the C ity of a token of our gratitude M exico.

Spencer Buchanan To be the daily Secretary of the O rganizing C om m itt ee Arthur Casagrande m eans to shoulder problem s which would kill any Leonard Cooling norm al man - or least would make his hair fall out. Jacob Feld H ere M r. Ram irez de Arellano, our beloved Secre­ Francisco G tfm ez-Pirez tary started at a distinct advantage - in fact, he looks B enj. Hough every bit as w ell in this respect as he did in M ont real. Jerry Jennings But I can assu re you that he has personally had the JOrgen O sterberg load of three or four on his shoulders. I would lik e Danna Leslie Professor Tam £z and M r. Ram irez de Arellano to James Parsons stand so that we can all express our warm appreciat ­ Ph ilip Rutledge ion to both of them . G regory Tschebotarioff Edward W hite It is said, I am told, that Professor M arsal has on ly once in 20 years rem oved his pipe from his mouth, There are two great secretB which are norm ally and that was when the great earthquake of 1957 stru ck revealed by the President at this stage. The first is M exico City. As President of the M exican National the m eeting-place for the next C onference, but Society he carries the responsibility for our prese nce splashed over this m orning’ s papers you w ill have here. How adm irable that such a man, in addition to been happy to read that it is to be in M oscow. M ay I his conference duties, should personally have taken ask Professor Tsytovich, who was largely responsibl e responsibility for the running of two specialty ses sions, for this, to stand so that we can congratulate him in and in addition w riting between tim es a book on the person. subsoil of M exico C ity.

Perhaps four years from now we shall be having our A t the end of m y talk I have the pleasure only of thank­ final banquet in Krem lin, having feasted the previo us ing a ll the O fficers of the International S ociety f or evening on a perform ance of Swan Lake by the Bolsho i. their valuable help over the past four years : our Past- Presidents, V ice-Presidents and the representatives Next, I want to greet our ladies. One of the m ain p ur­ of the National Societies. Let m e also thank those who poses of our large international m eetings is to bin d to­ contributed to the success of the conference by act ing gether soils engineers the w orld over into one big as G eneral Reporters, Panel M em bers, organizers fam ily. Adm ittedly we accom plish something of this and chairm en of Specialty Sessions. You did a good at our technical m eetings - but the results are bar ely job . worth m entioning com pared with what is achieved due to the presence of our lady-folk. I believe that th ey Then I should introduce to you our new S ecretary reduce the friction among us to zero w hile at the s am e G eneral, Kevin Nash. On retiring from the position tim e the cementing bonds increase to a maxim um . W e of Presiden t I can feel that I did at least one goo d job can express it by the new soil m echanics concept: which was to establish the post of S ecretary G enera l f' - 0, c’ - «o and to persuade Kevin Nash to take it on.

At the sam e tim e I want to thank on their behalf th e And finally, the second great su rprise which I shou ld Ladies Com m ittee who under M rs. Yolanda de Tam iz be springing on you : that is the name of our new organized such splendid and interesting visits for them . President which ( as you all know) is D r. Ralph Pec k.

To-night m y right arm should really be in a sling - so Ralph Peck was born in 1912, which conincided rough ­ many people have congratulated m e on the success of ly with the tim e when the G eotechnical C om m ission the conference. Everything went beautifully and I k now of the Swedish Railw ays started to investigate the you w ill all be behind m e when I turn m y thanks to many landslides which accom panied the construction those who rea lly deserve the credit. of railwayb on soft clay. He entered prim ary school at about the tim e when Terzagh i carried out his fir s t Let m e first thank the G overnm ent of M exico soils experim ents in Istanbul. He graduated from represented here by the M inister, and all those Renseelaer Polytechnic Institute in 1937, probably sponsors who econom ically made this Conference happily ignorant about the existence of soil m echan ics. possible. He had already embarked on a m ost prom ising career Dear M r. Tam iz ; on behalf of every participant I as a bridge engineer when he ran into D r. Terzaghi express a w arm and deeply felt thanks for the m agni­ and D r. Casagrande at H arvard U niversity, and his ficent organization of this conference, for the hos pi­ confrontation with these two personalities m ade him tality we have m et, and for the feeling of w arm a pioneer in the field of soil m echanics and founda t­ friendship we have sensed around us since we ion engineering. arrived. The story reads like a fairy-tale by m y countryman I know that the organization of such an affair is a Hans Andersen. It started when the great father of m ost demanding job - and this tim e it becam e no Soil M echanics, K arl Terzaghi, caught sight of the easier due to the fact that new procedures w ere tri ed young student Peck and decided to m ake him his per­ out. These have proved a success and I owe you a sonal resident assistant on the construction of the personal debt of thanks for your w illingness to exp eri­ Chicago Subway. This job over, Terzaghi chose m ent. But perhaps as a foot-note I m ay be perm itted him as his co-author of ’Soil M echanics and Eng in -

108 eering Practice’ . Je suis certain que nous emporterons de Mexico un souvenir agréable de son architecture, He started his b rilliant career as teacher at the de ses travaux, de son métro, et de l'audace U n iversity of Illin ois rn 1942, and it is m y guess that de ses travaux surtout dans le domaine des he m ust have taught soil m echanics to m ore students fondations. than any pther person, and w herever he goes in this w orld he finds sm all societies of old students who Finalement je voudrais remercier particulier feature him as their 'fa n ' . ement M. Tamez.

His honours are numerous ; let m e just m ention that he was among the first civil engineers to be electe d G. VALENZUELA into the new US Academ y of Engineering. He was the first Terzagh i lectu rer and this spring many Señor Presidente del Séptimo Congreso Inter­ listened to his facinating Rankine Lectu re at the nacional de Mecánica de Suelos e Ingeniería Institution of C ivil E ngineers in London. de Cimentaciones; Distinguidos Congresistas; Señoras y Señores. To say it sim ply: Our Society could not possibly ha ve found a better Presiden t and in his good hands I kn ow Me complace, profundamente, asistir a este our Society w ill go from strength to strength. ágape de despedida del VII Congreso Interna­ cional de Mecánica de Suelos e Ingeniería de Cimentaciones, pues he tenido oportunidad de R. E. PEC K enterarme de la magnífica organización de este evento, de las valiosas ponencias que Mr. Secretary} Mr. President; Ladies and se presentaron durante el mismo, así como del Gentlemen: elevado nivel técnico en que sus trabajos se desenvolvieron, razón por la cual les expreso It is an honor and a challenge to have been mi sincera y calurosa felicitación. elected President of our Society, and I wish to thank all of you for the confidence you Si el suelo, como elemento primordial de núes have shown me. tro planeta, es el sustento fundamental del ser humano, y el mayor escenario en que se But I have some personal misgivings at being proyecta y se integra en la vida, lógico es elected President after Dr. Bjerrura's Presi­ que aspire a conocerla, a dominarla, a aprove dency. charse de b u s frutos, y a edificar sobre ella. En el futuro, quizás no transcurra mucho tiem As you all know, President Bjerrum has been po, el hombre estaré en posibilidad de cons­ an efficient president and a ceaseless worker. truir sobre el suelo de otros mundos que for­ His multiple activities have without doubt, man, como el que habitamos, átomos pequeñísi­ led to the progress of our Society and I wish mos del universo. ¡ Preparemos a las nuevas that we all acknowledge his tremendous suc- generaciones para evento singular! ¡Leguémo¿ ces as president. He has been an excellent les los conocimientos científicos aue han he­ president and we should all thank him most cho posible el triunfo del hombre sobre los warmly for this. obstáculos que presentan los suelos en que ee sustentan las presas, puentes, aeropuertos, carreteras, ferrocarriles, habitaciones, etc. J. KERISEL que promueven el bienestar y la felicidad hu­ manas! M. le Ministre; Mesdames; Messieurs: En nuestra época, en que parece que el hombre Je voudrais m'associer aux paroles prononcées ha conquistado el poder de la ubicuidad, mer­ par M. Le Président Bjerrum et remercier au ced a los maravillosos medios de transporte nom de l o u s les congressistes d'expression que ha ingeniado, revisten singular importan­ française les organisateurs de cette confer­ cia los Congresos Internacionales que feliz­ ence. mente se realizan con frecuencia en todos los países, especialmente por el valioso fructífe En tant que Président du Comité de Defini­ ro intercambio de experiencias que coadyuvan tions et Symboles je me trouve dans une si­ decisivamente al progreso científico y técni­ tuation delicate car je ne trouve pas la fa­ co de nuestra época. Pero estimamos que no çon adéquate de remercier tous ce qui ont solo debe computarse este aspecto, Bino que contribué a la bonne marche des travaux. debe destacarse, muy señaladamente, que estas m interesantes reuniones prohijan el estrecha­ Nous nous trouvons dans ce lieu historique miento de las relaciones humanas, el conoci­ qui est le dernier point de reunion de notre miento personal de los científicos y técnicos, Congres. Ce congrès a été harmonieux et cou y, esencialmente, la amistad entre los hombres ronné de succès. que, a fin de cuentas, es el móvil que auspi­ cia las acciones más valiosas que confluyen al progreso de los pueblos. Je voudrais remercier tout d'abord les dames mexicaines qui ont été des hôtesses aimables. Como ingeniero, a la vez responsable de una función pública, y como mexicano, constituye La conférece a été un succès autant dans les para mí una honda satisfacción expresarles mi séances plénieres que dans les Béances spé­ cordial saludo a los distinguidos congresistas ciales. extranjeros que han escogido a México, para

109 dialogar sobre loe problemas que atañen a la well address, but my sincere invitation to dieciDlina que es objeto principal de sus afa come back to this country that you have nes científicos. honored with your presence and that, as al- ways, will receive everyone with open arms. Finalment, señoras y señores, me es muy grato Thank you. expresarles, no palabras de despedida, sino mi invitación sincera para que todos ustedes visiten con frecuencia a este país, que han Monsieur 1-e Président du Septième Congrès In honrado con su amable presencia, y que, como ternationale de Mécanique des Sole et des Tra siempre, habrrf de recibirlos con los brazos vaux de Fondations; Mesdames et Messieurs: abiertos. Muchas gracias. C'est avec une ,;c:e nrofonde que l'assiste a cette agape de clôture du Vllfeme Congrès In­ Mr. President of the Seventh International ternationale de Mécanique des Sols et des Tra Congress on Soil Mechanics and Foundation vaux de Fondations où j'ai eu l'ocassion de me Engineering; Distinguished Congressmen; rendre compte de la magnifique organisation Ladies and Gentlemen: de cet événement, de la qualité incomparable des travaux scientifiques présentés par Mes­ It gives me great pleasure to attend this sieurs les Congressistes de tous les pays farewell dinner of the VII International Con ainsi que du haut niveau scientifique dans gress on Soil Mechanics and Foundations Eng­ lequel se sont déroulés ces travaux. Pour ineering, for I have been informed of the toutes ces raisons permettez - moi de vous magnificent organization of this event, of adresser mee plus sincères et chaleureuses the valuable papers presented, as well as of félicitations. the high technical level in which its activ­ ities were carried out, for which I wish to Si le eol, comme élément primordial de notre extend to you my warmest congratulations. planète, est le soutien fondamental de l'ftre humain et la grande scène ou il se projette If soil, as a primary element of our planet, et s'intégre dans la vie, il eet logique qu' is the fundamental basis of the human being, il aspire à la connaître, à la dominer, ^ and the principal scenery on which he devel­ la dominer, à profiter de ses fruits, "à bâi- ops himself, it is logical for him to wish to tir sur elle. Probablement, dans un avenir understand it, dominate it, benefit on its très proche, l'homme sera en état de constru products, and build upon it. In the future ire sur le sol des autres mondes qui consti­ - perhaps not too distant - man may be able tuent comme le notre, des atomes infinitésim to build on the soil of other worlds that aux de l'univers. Préparons donc les nouveT constitute, like the one we live in, small les générations à cet événement singulier! atoms of the universe. Let us prepare the Léguons - leur les connaissances scientifiques new generations for such an outstanding qui ont fait possible le triomphe de l'homme event! Let us leave them, as a heritage, the sur les obstacles que présentent les sols qui scientific knowledge that has made possible supportent nos barrages, nos ponts, nos aér£ man's triumph over the obstacles presented ports, nos routes, nos cheminis-de-fer, nos by soil supporting dams, bridges, airports, maisons, etc, et qui sont à la baBe du bien- highways, railroads, buildings, etc., that être et du bonheur humains. promote human welfare and happiness! A notre époque, oïi l'homme paraît avoir con­ In our era, where man seems to have gained quis le pouvoir d'ubiquité grâce aux mervei¿ the power of ubiquity, due to the marvellous leux m o y e m s de transport qu'il a génialement transport media he has devised, International inventés, les Congrès Internationaux qui se Congresses, that fortunately are held in dif réalisent avec fréquence dans tous le pays ferent countries, have a unique importance, du monde, revêtent une importance singulière especially due to the valuable interchange a cause, spécialement, des échanges précieux of experienceis that contribute to the scien­ et fructueux qui contribuent, d'une manière tific and technical progress of our age. décisive, au progrès scientifique et techni­ But we feel that not only this aspect should que de notre époque. Cependant, nous esti­ be considered, but the fact should be emphas mons qu'on ne doit pas prendre en considéra­ inzed that these interesting gatherings also tion uniquement cet aspect mais qu'on doit promote closer human bonds among scientists surtout mettre en évidence combien ces intér and technicians, and essentially, friendship essantes réunions contribuent 'k rendre plus between men that, in ultimate analysis, is étroites les relations humaines, à mettre en the motivation that sparks the most valuable contact personnel les hommes de science et actions for the progress of peoples. les techniciens de tous les pays et surtout, essentiellement, ces réunions rendent possi­ As an engineer, as public administrates and ble l'amitié entre les hommes,ce qui, en fin as a Mexican, I am deeply honored to express de compte, est le mobile et le moteur des a£ a cordial greeting to the distinguished for­ tions les plus enrichissantes des hommes, in eign congressmen that have chosen Mexico to dispensables au progrès des peuples. exchange experiences and ideas about the pro blem6 related with the field that is the En tant qu'ingénieur et responsable d'une main object of your scientific toils. fonction publique et aussi en ma qualité de Mexicain, j'éprouve une profonde satisfaction Finally, ladies and gentlemen, it gives me en adressant mon salut la pJût: condial aux great pleasure to extend to you, not a fare- distingués congressistes étrangers qui ont choisi Mexico pour dialoguer sur les problè­ with us. mes qui concernent les disciplines qui font l'objet principal de nos intérêts scientifi­ Remain all of you, Mexicans, in the certain­ ques. ty that as the song goes:

En arrivant a la fin de mon discours, Mes­ "There is nothing else like Mexico, not in dames et Messieurs je désire, non pas vous the whole wide world..... " dire adieu, mais vous prier d'accepter mon invitation la plus sincère pour que vous M RS. M A N A N reveniez, le plus souvent possible, visiter ce pays que vous venez d'honorer de votre présence et où vous serez toujours reçus les On behalf of all the ladies from the United bras ouverts. Merci. States 1 would like to thank all the mexican ladies who have acted as our guides and hos­ tesses during this congress and who have M RS. I_ GURI shown us so much history and so much beauty in such a limited time. They have done this On behalf of all Spanish-speaking ladies, I always with a smile. would like to compliment and thank all the attentions we have received from our Mexican I have thanked all the ladies but I wish to sisters. thank also their husbands who together have opened the doors of their homes to us. Their watchfulness after us has topped any­ thing we could imagine and, to our guardian angels, we want to tell that we look forward You can be certain that if you ever come to for the day in which we will be able to open Indianapolis, Indiana we shall also receive wide our homes and our hearts as they made you with open arm6. Thank .you. Errata

Reference Comments

2 Par. 1.1 (2) Change horse back to horseback 3 line 21 Change mugh to much 3 par. 1.4(3 Change or to of line 18) 4 Right Col, Change Walalua to Wahlawa line 16 6 par. 2.2 line 7 Change stero-palrs to stereo-palrs 6 par. l,line 6 Change (Wat. Exp. Sta, 1947) to (Progress Report, 1947) 9 par. 1, line 12 Add a comma after required, 10 right col, Change inadequacy to inadequacies line 8 11 last par. , Change (Corps of Engineers, 1966) to (Inspection Manual, 1966) right col 13 par. 3.3, Change reserach to research line 5 14 par. 2 Change to (Zeller and Wullimann, 1957) 15 line 1 Change date from 1964_to 196.3 16 par. 2, line 6 Change to read ------internal friction^ and (2) a care- 18 par. 4.2 line 1 Change set forth by the to customarily used by the par. 4.2 Delete entire reference in parenthesis, add period, line 4 and 5 19 Right Col. , Add period after materials^ Delete entire reference lines 4 and 5 from end 20 Right Col., Delete aproach to analyze the tlme-historv line 2 26 Table VI Terzaghi Dam, change reference from 1968 to 1967 " Change 4th project to read Notre -Da me de etc. 2 6 Right Col. Change firm to firms Une 5 28 Table VII Change 2nd project to read Manicougan 2 Dam 29 Right Col. Change Tortoles to Tortolas last par., line 1 30 Figs. 26 & 27 Change spelling in captions to read Tortolas

221 Reference Comments 3 1 Right Col, Chanae reference to read (Golder and Bazett, 1967) 2nd par. 34 Right Col. Spelling should be Netzhualcoyotl 2nd par. , line 2 3 4 Right Col. Scellinq should be phenomenon 3 rd par. , line 7 3 4 Right Col. Spelling should be presumably last line 3 4 Fig. 31 Reference should be to (After Marsal and Ramirez de Arellano, 1967) 3G Par. 4.5.2 Chanqe date from (1961)to (1962) line 22 36 Par. 4 .5 .2 Chanae date from (1961) to (1965) line 27 37 2nd line from Change spelling to (Olivier, 1967) bottom 44 Right Col, Chanqe Cherry Dam to Chenev Dam line 14 4 6 Par. 3 , line 9 Change reference to read (Binnie et.al. , 1967) 48 Par. 6.3.1, Add apostrophe, contractor's 2nd par. , line 11 52 Right Col. Refer to Marsal and Ramirez de Arellano line 1 55 Right Col. Refer to Marsal and Ramirez de Arellano line 3 60 Fig. 58 Refer to Marsal and Ramirez de Arellano 61 Fig. 66 Refer to Marsal and Ramirez de Arellano 68 Par. 10 (a) Spelling undesirable line 4 69 3rd par. , line 3 Chanae built as sites to built at sites 69 3 rd par. , Chanae that occurrence to those occurrences line 10 7B Add the following reference:

Hall, E.B. , and Gordon, B.B., "Triaxial Testing With Large Scale High Pressure Equipment," Laboratory Shear Testing of Soils. American Society for Testing and Materials, Philadelphia, Pa., STP 361, 1963, pp. 315-328 . 79 Add the following reference:

Jones, J.C ., "Deep Cut-offs in Impervious Alluvium Combining Slurry Trenches and Grouting", Transactions. 9th International Congress on Large Dams, Istanbul, 1967, Vol. 1, pp. 509-524.

222 Reference Comments 80 Add the following reference:

Lowe, J. , "Stability Analysis of Embankments", Tournal of the Soil Mechanics and Foundations Division. American Society of Civil Engineers, Vol. 93, No. SM4, Proc. Paper 5305, July, 1967 . pp. 1-33. SI Add the following reference: Newmark, N.M ., "Earthquake Effects on Dams and Embankments," presented at the Structural Engineering Conference, American Society of Civil Engineers, San Francisco, Calif., O c t., 1963 .

82 Reference to O'Neill Change date of STP 351 from 1964_to 1963 Add the following referen ces:

Peck, R. B. , “Statements of Conclusions by the General Reporters, Division G ," Proceedings. 6th International Conference on Soil Mechanics and Foundation Engineering, Montreal, Vol. 3, 1965, p. 596

Ripley, C.F. , "Portage Mountain Dam, I: An Outline of the Project," Canadian Geotechnical Tournal. Vol. 4, No. 2, May, 1967, pp. 125-141

83 Reference to Ripley, line 4 Delete first 1964 after Edinburgh

223 CORRIGENDA AND ERRATA CORRIGENDA ET ERRATA

V O L U M E I Page 302, left-hand column: equation (21) should read . o * Page 122, Pig. 1: 6 full circles should be ff . j. cos -t+£- changed into open ones, according to Figs. 2 and 3* Page 302, right-hand column

Page 135, left-hand column: equation (3) line 2 should read "As the mobilization". should read* 2 < 7 Oy- O’z Tyx Tzx * line 2 from the bottom should read "mobili^ ----- 3------zation of particles, d a y particles are'.'

Page 136, left-hand column: equation (10) Page 304, right-hand column: lines 9 to 11 should read i , , „ . omit "Comparing this relation------well e oct * y ( €i + 2€3> agreement”. Page 143, Synopsis» line 3 should read"(l969) Page 379, Heading should read Page 143, right-hand column: last line should "POTENTIAL AND CREEP RUPTURE OF SOILS" read "zi = vertical stress".

Page 144, left-hand column: line 17 should Page 403, right-hand column: line 30 add "pore pressure" after "the change in". (_) , _ (S)” E2 a Page 406, Fig. 7: strese-Btrain loops. Num bers shown on the axis of Shear Stress should be divided by two. Page 145, right-hand column: line 4 should read . E, 1w(a<2»i^<5> (_)’

Page 150, left-hand column: first reference should read "Gerrard, C.M. (1969) - --- V O L U M E II — traffic loadings. Special Report No. 3 Aust. Rd Res. Bd, Melbourne." Page 11, Pig. 4b: should read Cy. 10~J cm2/seo. Page 160, left column: line 13 should read "escalating step function- the envelope.." Paga 14, left-hand column: equation should read Page 185, Pig* 5: should read"Uniaxial Consolidation? B ' “ " 13$ 5*3° " 4-62 cm Page 27, right-hand column Page 186, Pig. 6: should read “Uniaxial Consolidation.* line 13 should read "In two papers (Jo- hannessen and Bjerrum, 1965,".

Page 187, Pig. 7: should read 'Uniaxial Consolidation? line 26 "table" should read ground pile cn cm Page 297, Heading: should read "STHESS-STRAIN-TIME BEHAVIOR" Page 32, left-hand column: line 15 should read „260 tonB«#

Page 36, Pig. 3: ajouter Nota - pour les Page 298, right-hand column: line 16 should 3 remblais, la nappe se trouve sensible­ read "applied by a stress ratio z" ment au niveau inital du terrain naturel.

557 Page 41, colonne de droite Page 431, colonne de droite: remplacer les lignes 10 a 15 par "simple, ce sont donc ligne 13, au lieu de "Bien que les valeurs surtou les conditions d ’exécution qui ------a Narbonne 5,20m)". rencontrant de grandes difficultés. En

lire "Lee valeurs a comparer sont es6ez supposant le problème résolu, la stabilité

différentes et certains résultats pa - définitive des ouvrages parait facile a raissent aberrants (valeurs trouvées à assurer, sans qu’il soit nécessaire de Palavas 2ème phase 7m et à Narbonne 5,20m). recourir a des formes de cavité ou des épaisseurs de béton exceptionnelles. Mais tableau IV lire " a en place" l ’abandon du projet n ’a pas permis de 1,85 résoudre complètement les problèmes pra - 1,73 tiques ". 1,54 - 0,16 Page 435, left-hand column: équation (5) 0,37 should read ^ ) ± 0 = ± 0,77 - 1,22 Page 441, right-hand column: line 47 should 0,71 read "N° 3". - 0,75

avant dernière ligne lire "xial, ces premiere résultats laissent espérer une Page 533, left-hand column: line 14 should read "can exceed 90m." solution possible"

Page 43, Fig. 12a: ajouter sous l ’axe des Page 533, right-hand column: line 4 should abscisses "distance en m du piézomètre à read "Bjerrum (1954 b)." l ’axe du drain". Page 536, left-hand column: line 25 should

Page 54, Fig. 1. it is reversed. read "clay or precipitate as nearly insoluble compounds". Page 55, left-hand column: line 7 should read " with a layer of wax to prevent pos­ Page 537, Fig. 7b: should read "elevatiOD sible loss of moisture by evaporation." above Bea level 120, 140, 160 180".

Page 117, Fig. 2a: last line should read Page 538, left-hand column: line 51 should read "cutting of the order of 3m can be Page 296, Table 1: 6th line from the bottom, expected when". should be deleted "12.3 for water content (w)* and *117 dry density (yd)'.' S T A T E -OF-THE-ART REPORT

Page 385, right-hand column: lines 33-45 refer V. F. B. De Mello ences should read in this order (1), (4), — (5), (6), (3) and (2). Page 53, right-hand column: line 40 should read Page 397, Healing (40 + 5.0) y D to (40 + 5.0fp) title in french should read Page 54, left-hand column; line 17 should "BLOCS DE SABLE CIMENT EN..." read "increase with depth". after authors names should read "Koninklijke Nederlandsche Heidemaatschap- Page 54, rigth-hand column: line 10 should pij, Arnhem, Netherlands". read "»herein".

Page 55, right-hand column: line 5 should Page 427, Fig. 5ic: remplacer par la figure read "Sc = 1 + 0.2 N

Page 65, right-hand column: line 19 should read "of failure conditions, appropriate

Page 71, left-hand column line 31 should read "to soils under the assumption of the Linear" line 47 should read " s ♦ c +

Page 71, right-hand column: line 1 should read "may be three different values at

558 play". Page 86, right-hand column: line 5 from bottom should read "coincidence of the Page 73. right-hand column: line 9 should minimund d f/dz to d T f/dz". read "Mayer and Habib (1951), Habib and Suklje". Page 87, right-hand column: line 21 should read "of the soil: Through appropriate for Page 75, right-hand column: line 4 6 should mulas,". read "to the product of the lateral surface a ** 88 «8 • Page , right-hand column: line 12 should read "under item 2.5.2. to the better docu Page 76, left-hand column: line 4 from bottom mented". should read "p =0.5 in sensitive clays short ly after ". Page 89, left-hand column: line 33 ehould read "the ultimate load />90= 0.04 B, B Page 79» right-hand column: line 2 should being". read "predicted by theories of elasticity". 89 Page 80, left-hand column Page , right-hand column: line 9 should 4 read "item 2.5.2. may be qualified through line should read "the mechanical proper­ interpretations". ties of soils and, to pile surrounding soil" line 12 from bottom should read "sions for Page 90, right-hand column: line 19 should the load-deflection characteristics". read "cussed under item 2.6.1".

Page 80, right-hand column: line 13 from the Page 91, left-hand column: line 6 from bottom bottom should read "teraction is implicitly should read "may be subjected to misuse, accepted to have". despite the log". Page 82, right-hand column: line 7 should Page 92, right-hand column: line 2 from < , read "that a soil allowed to consolidate bottom should read Delete parenthesis)at partly". the end of line . Page 83, left-hand column: line 36 should read "indications, from which it will be justi­ Page 95, right-hand column: line 42 should fied". read "capacity factors N'c N'q and N*/were established". ’ Page 84, Fig. 16: superpose the three lines mentioned at end of first paragraph, left Page 96, left-hand column: line 7 from bottom of page 85. should read "straight line vs J t ~and follow ing at some".

SHEAR STRENGTH lb»/a' Page 98, left-hand column: line 6 from bottom

0 2000 4000 6000 8000 10000 should read "Since the direct determination of E and p. ".

Page 99, left-hand column: line 12 close bracket J after equation.

Page 100, left-hand column: line 16 should read "ficulties in choosing few "represen­ tative"?

Page 105, left-hand column: line 24 from bottom should read "in part as an exponen­ tial function of time:".

Page 107, left-hand column: line 26 should read "and B coefficients were postulated make".

Page 112, right-hand column: line 23 should read "12d, I8d, 24d, 30d, foi a single 2 array to 32 "•

Page 113, right-hand column: line 2 from bottom should read "subsoil profile com­ prising and upper clay".

Page 114, right-hand column: line 7 should read "fine silty sand, two sets of tests on four".

559 Page 115, left-hand column item 3, change Av. Sett. Vol. from 0.2 to 2.0#. line 18 should read "tions R = right pile; EP = elastic" Page 241, Table V

line 11 from bottom should read "plicable also to endbearing conditions”. item 2, change Av. Sett. Vol. from 4.3 to 1.9# Page 115, right-hand column: line 7 from item 7, replace values 0.6, 0.09, 0.05, by bottom should read "the use of overall ad 1.7, 0.23, 0.16 heBion factors and ". — item 7, replace values 0.4**, 0.17d, 0.12d , Page 116, left-hand column: line 10 should b.v 1.3, 0.33, 0.25 . read "to have the responsability of permit ting a more rational". Page 242, Fig. 9: change point 4 in accord­ ance with change in item 4, Table VI. Page 119, right-hand column: line 6 from bottom should read ” below it the net mov£ Page 243, Table VI ment of the pile is of". item 4, change i/R from 1.0 to 2.0 Page 120, right-hand column: line 15 from item 9, change 0.075, 3, 0.75 to 0.16, 7, bottom should read "great number of inge­ 1.7 nious ideaB have been de-". item 10, change R form 52 to 26 ft.

Page 123, right-hand column: line 34 should Page 245, right-hand column: line 41 change read "which ?) would adequately reflect Fig. 10 to Fig. 10a. the". Page 249, Fig. 11a: Bhould read Page 125, left-hand column: line 23 should read "felt that only a systematic reanaly- "A = iyz( 1+K0 )R = p0R sis of ". Page 249, right-hand column: line 12 from Page 125, right-hand column: line 17 should bottom replace heavy dash-dot by curved read "nir plus de données concernant le cas nearly vertical . gene'ral ". Page 250, Fig. 12a: horiz. axis should read R. B. Pack "Time days (log scale)". Page 229, Table I: item 7 reference should read "Matich and Carling 1968". Page 251, Fig. 12b: horiz. axis should read "Time, days (log scale)". Tage 232, Fig. 2, should read " z = 28' " Page 254, Fig. 13, horiz. axis should read Page 233, Table Ii " Time, days (log scale)". item 3, depth should read "z=28* " Page 262, left-hand column: line 7 replace add the following for second tunnel, "soldier piles and lagging" by "closely 26 ft. distant on centers: Av. Sett. spaced soldier piles without lagging". Vol. 2.5*; 8 fi„ = 0.63 ft; 8 = 0.32 ft. Page 264, Fig. 2: last word in caption should Page 235, Table III be Strut. item 2, add Av. Sett. Vol. 0.9# Page 270, left-hand column: line 26 item 3, add Av. Sett. Vol. 3.7# the permanent wall was cast against the steel sheetpiling. There was no backfill. Fig. 3, should read " z — 36' ". Page 285, last line: add W.T. Jackson. Page 237, Table IV item 1, add Av. Sett. Vol.— 0.9# Page 288, last line: add pp. 60-74.

560 SESSION ONE: SEKTION EINS: STRESS-DEFORMATION AND STRENGTH SPANNUNGSVERFORMUNG UND FESTIGKEITSVERHALTEN CHARACTERISTICS, INCLUDING TIME EFFECTS UNTER BERÜCKSICHTIGUNG DER ZEIT

PREMIERE SEANCE: SESION UNO: CARACTERISTIQUES CONTRAINTES—DEFORMATIONS CARACTERISTICAS ESFUERZO-DEFORMACION Y ET RESISTANCE, COMPTE TENU DE L'INFLUENCE DU RESISTENCIA, INCLUYENDO LOS EFECTOS DEL TIEMPO TEMPS

R. J. BALLY. ON STRESS-STRAIN IN HIGHLY COMPRESSIBLE TRIPHASIC SOILS I. P. AWTONESCU and SUR LA RELATION CONTRAINTE-DEFORMATION DANS LES SOLS TRIPHASES V. D. PER LEA FORTEMENT COMPRESSIBLES Rumania ÜBER DAS SPANNUNGS-DEHNUNGS—VERHALTNIS IN STARK ZUSAMMENDRUCKBAREN DREIPHASICEN BODEN SOBRE LA RELACION ESFUERZO-DEFORMACION DE SUELOS TRIFASICOS DE ALTA COMPRESIBILIDAD

V. G. BEREZANTZEV, ON THE STRENGTH OF SOME SOI LS II A. A. MUSTAFAYEV, LA RESISTANCE DE CERTAINS SOLS N. N. SIDOROV. ÜBER DIE STANDFESTIGKEIT EINIGER BÖDEN I. V. KOVALYOV and SOBRE LA RESISTENOA DE ALGUNOS SUELOS D. K. ALIEV U. S. S. R.

J. BIAREZ, MECHANICAL PROPERTIES OF SOILS UNDER VARIOUS STRESS CONDITIONS 21 J. BELLIER, PROPRIETES MECANIQUES DES SOLS SOUS DIVERSES SOLLICITATIONS J. L. BORDES, MECHANISCHE EIGENSCHAFTEN VON BÖDEN UNTER VERSCHIEDENEN B. BOUCEK, SPANNUNGSBEDINGUNGEN L. LONG. PROPIEDADES MECANICAS DE SUELOS BAJO DIVERSAS SOLICITACIONES M. ORLIAC at C. REMY Franca

A. W. BISHOP and CREEP CHARACTERISTICS OF TWO UNDISTURBED CLAYS 29 H. T. LOVENBURY CARACTERISTIQUES RHEOLOGIOUES DE DEUX ARGILES NON REMANIEES England KRIECHEIGENSCHAFTEN VON ZWEI UNGESTÖRTEN TONEN CARACTERISTICAS REOLOCICAS DE DOS ARCILLAS INALTERADAS

G. E. BLIGHT WASTE GYPSUM AS AN EMBANKMENT MATERIAL 39 South Airíca GYPSE DE REBUT COMME REMBLAYAGE AUSGELAUGTER CIPS ALS DAMM-SCHUTT -MATERIAL DESECHOS DE YESO COMO MATERIAL PARA TERRAPLENES

561 J. BRINCH HANSEN and TESTS AND FORMULAS CONCERNING SECONDARY CONSOLIDATION 45 S. INAN EXPERIENCES ET FORMULES CONCERNANT LA CONSOLIDATION SECONDAIRE Dtnmarfc VERSUCHE UND FORMELN ÜDER NACHTRÄGLICHES KONSOLIDIEREN ENSA YES Ï FORMULAS DE CONSOUDACION SECUNDARIA

J. B. BURLANO DEFORMATION OF SOFT CLAY BENEATH LOAD AREAS 55 England DEFORMATION D'UNE ARGILE MOLLE SOUS CHARGE UNIFORMEMENT REPARTIE ZUSAMMENDRÜCKUNG VON WEICHEM TON UNTER BELASTETEN FLÄCHEN DEFORMACION DE ARCILLAS BLANDAS BAJO AREAS CARGADAS

D. E. CALHOUN and DYNAMIC OEDOMETER STUDY OF LATERAL YIELD EFFECTS 65 G. E. TRIANDAFILIDIS ETUDE OEDOMETRIQUE DYNAMIQUE DES EFFETS D'EXPANSION LATERALE U. S. A. DYNAMISCHER OEDOMETERVERSUCH ÜBER DIE AUSWIRKUNG DER SEITENVERFORMUNG ESTUDIO DE LOS EFECTOS DE LA DEFORMACION LATERAL EN UN EDOMETRO DINAM1CO

T. K. CHAPLIN INNER AND OUTER PLASTIC YIELD SURFACES IN CLAYS 73 England SURFACES INTERIEURES ET EXTERIEURES DE PLASTIFICATION DES ARGILES INNERE UND ÄUßERE FLACHEN DER VERFORMUNG VON TONEN SUPERFICIES DE FLUENCIA INTERIORES Y EXTERIORES EN ARCILLAS

A. CROCE, COMPRESSIBILITY AND STRENGTH OF STIFF INTACT CLAYS 81 R. JAPELLI, COMPRESSIBILITE ET RESISTANCE AU CISAILLEMENT D'ARGILES RAIDES NON A. PELLEGRINO and FISSURES C. VIGGIANI VERDICHTUNGSFXHIGKEIT UND FESTIGKEIT VON STEIFEN UNGESTÖRTEN TONEN Italy COMPRESIBILIDAD Y RESISTENCIA DE ARCILLAS RIGIDAS NO FISURADAS

P. CRUZ ENGINEERING PROPERTIES OF SOME RESIDUAL COMPACTED SOILS 91 Brazil PROPRIETES MECANIQUES DE SOLS RESIDUELS COMPACTES TECHNISCHE EIGENSCHAFTEN EINIGER VERDICHTETER VERWITTERUNGSBÖDEN PROPIEDADES MECANICAS DE ALGUNOS SUELOS RESIDUALES COMPACTADOS

J. M. DUNCAN and BEHAVIOUR OF SOILS IN SIMPLE SHEAR TESTS 101 P. DUNLOP COMPORTEMENT DES SOLS EN CISAILLEMENT SIMPLE U. S. A. VERHALTEN EINIGER BÖDEN IN EINFACHEN SCHERVERSUCHEN COMPORTAMIENTO DE SUELOS EN ENSAYES DE CORTE SIMPLE

M. A. EL-SHOBY DEFORMATION OF SANDS UNDER CONSTANT STRESS RATIOS I 1 1 Egypl DEFORMATION DES SABLES SOUS RAPPORT DE CONTRAINTES CONSTANT VERFORMUNG VON SANDEN UNTER KONSTANTEN SPANNUNCSVERIIALTNISSUN DEFORMACION DE ARENAS BAJO REI.ACION Df ESFUER/.OS PRINCIPALES CONSTANTE

J. FEDA EFFECT OF STRUCTURE ON THE SHEARING RESISTANCE OF SAND I 2 I Ciechofclovakia L'INFLUENCE DE LA STRUCTURE SUR LA RESISTANCE AU CISAILLEMENT DU SABLE H M ll,J ü l R SI K l K I IR ALI 1)1 S SCÏIl KWIDl KSI AND VUS SAM) I 1 I CIO 1)1 1A IS IK U II K \ IN LA Kl SISII M I \ A l (O KU 1)1 AKINAS

562 J. FOLQUE and INFLUENCE OF THE MEAN STRESS ON THE STRENGTH CHARACTERISTIC F. J. CABRAL PINTO EVALUATED BY ONE-SPECIMEN TESTS

Portugal INFLUENCE DE LA CONTRAINTE MOYENNE DANS LA DEFORM ABI LITE EVALUEE AU MOYEN D'ESSAIS SUR UN SEUL ECHANTILLON EINFLUß DER HAUPTSPANNUNGEN AUF DIE FESTIGKEITSEIGENSCHAFTEN ERMITTELT AN EINER EINZIGEN PROBE INFLUENCIA DEI. ESFUERZO NORMAL OCTAHERICO EN LAS CARACTERISTICAS DE RESISTENCIA EN PRUEBAS CON UN SOLO ESPECIMEN

A. A. FUNGAROLI and UNIT WEIGHTS OF A NORMALLY CONSOLIDATED SOIL S. R. PRAGER POIDS SPECIFIQUE D ’UN SOL CONSOLIDE NORMALEMENT

U. S. A. SPEZIFISCHES GEWICHT EINES NORMAL KONSOLIDIERTEN BODENS PESOS ESPECIFICOS DE UN SUELO NORMALMENTE CONSOUDADO

S. FRYDMAN and SOME PSEUDO-ELASTIC PROPERTIES OF GRANULAR MEDIA J. G. ZEITLEN QUELQUES PROPRIETES PSEUDO-ELASTIQUES DES MILIEUX GRANULEUX

I vie l EINIGE PSEUDO-ELASTISCHE EIGENSCHAFTEN ROLUGER MEDIF.N ALGUNAS PROPIEDADES SEUDOELASTICAS DE MEDIOS GRANULARES

C. M. GERRARD and APPLICATION OF LAYERED ELASTIC THEORY TO PRACTICAL PROBLEMS J. R. MORGAN APPLICATION DE LA THEORIE ELASTIQUE DES COUCHES AUX PROBLEMES PRATIQUES

Auflralia ANWENDUNG DER THEORIE DER ELASTISCHEN SCHICHTEN AUF PRAKTISCHE PROBLEME APLICACION DE LA TEORIA DE CAPAS ELASTICAS A PROBLEMAS PRACTICOS

H. J. GIBBS and TECHNIQUES FOR PORE PRESSURE MEASUREMENTS AND SHEAR TESTING OF SOIL C. T. COFFEY MESURE DES PRESSIONS INTERSTITIELLES ET ESSAIS DE CISAILLEMENT

U. S. A. VERFAHREN FÜR PORENDRUCKMESSUNGEN UND SCHERUNTERSUCHUNGEN AN BÖDEN TECNICAS PARA MEDICION DE PRESION DF. PORO Y ENSA YES DE CORTANTE DE SUELOS

T. E. GLYNN and A STRESS-STRAIN RELATIONSHIP FOR CLAYS SUBJECTED TO REPEATED LOAOING R. W. KIRWAN RELATION CONTRAINTE-DEFORMATION POUR DES ARGILES SOUMISES A DES CHARGES

Ireland REPETEES EINE SPANNUNGS-DEHNUNGSBEZIEHUNG FUR TONE BEI WIEDERHOLTER BELASTUNG UNA RELACION ESFUERZO-DEFORMACION PARA ARCILLAS SUJETAS A CARGA REPETIDA

J. W. S. DE G R A F T - THE STRENGTH CHARACTERISTICS OF RESIDUAL MICACEOUS SOILS AND THEIR JOHNSON, APPLICATION TO STABILITY PROBLEMS H. S. BHATIA and CARACTERISTIQUES MECANIQUES DES SOLS RESIDUELS MICACES, APPLICATION A 0 . M. GIDIGASU L'ETUDE DE LA STABILITE DES TALUS Ghana DIE FESTIGKEITSEIGENSCHAFTEN GLIMMERHALTIGER VERWITTERUNGSBÖDEN UND IHRE ANWENDUNG BEI STABILITÄTSPROBLEMEN LAS CARACTERISTICAS DE RESISTENCIA DE SUELOS MICACEOS RESIDUALES Y SU APLICACION A PROBLEMAS DE ESTABILIDAD

E. C. HAMBLV and OBSERVATIONS AND PREDICTIONS OF STRESSES AND STRAINS DURING PLANE K. H. ROSCOE STRAIN OF "WET” CLAYS England PREVISION ET OBSERVATION DES CONTRAINTES ET DEFORMATIONS DES ARGILES LEGEREMENT SURCONSOLIDEES SOUMISES A DEFORMA TION PLANE BEOBACHTUNG UND VORHERSAGE VON SPANNUNGEN UND DEHNUNGEN BEI tINAC'HSIGLR VERFORMUNG VON FEUCHTEN TONEN OBSERVACIONES Y PREDICCIONES DE ESFUERZOS Y DEFORMACIONES DE ARCILLAS UVERAMENTE SOBRECONSOUDADAS SUJETAS A DEFORMACION PLANA E. T. HANRAHAN arel THE IMPORTANCE OF SHEAR IN CONSOLIDATION 183 J. A. MITCHEL L'IMPORTANCE DU CISAILLEMENT DANS LA CONSOLIDATION

Irebnd Dll. HEDELTUNG DES AHSCIIKKbNS UHI DHR KONSOI.IDIERl NG LA IMIVRTAXCIA DLL ESIVER/.O CORTANTF. EN IA CONSOLIDA CION

N. JANBU THE RESISTANCE CONCEPT APPLIED TO DEFORMATION OF SOILS l» | Norway APPLICATION DU CONCEPT DE RESISTANCE A LA DEFORMATION DES SOLS ANWtNDUNG DES WIDERSTANDSBEGRIFFES AUF DIE VERFORMUNG VON BÖDEN EL CONCEPTO DE RESISTENCIA APLICADO A LA DEFORMACION DE SUELOS

M. M. JOHNSTON LABORATORY COMPARISON TESTS USING COMPACTED FINE-GRAINED SOILS 197 u. s. t. ESSAIS COMPARATIFS DE LABORATOIRE UTILISANT DES SOLS A GRAIN FIN COMPACTES VERGLEICHENDE LABORVERSUCHE UNTER BENUTZUNG VERDICHTETER FEINKÖRNIGEN BÖDEN ENSAYES COMPARATIVOS DE LA BORA TORIO EN SUELOS FINOS COMPACTADOS

E. JUAREZ BADILLO FAILURE THEORY FOR CLAYS 203 M«i¡» THEORIE DE RESISTANCE POUR LES ARGILES BRUCHTHEORIE FÜR TONE UNA TEORJA DE FALLA PARA ARCILLAS

G. KASSIFF and SWELL PRESSURE MEASURED BY UNI-AND TRIAXIAL TECHNIQUES 215 R. BAKER PRESSION DE GONFLEMENT MESUREE DE MANIERE UNI ET TRIAXIALE IrMl QUELLDRUCK GEMESSEN MIT EIN- UND DREIACHSIALEN VERFAHREN PRESION DE EXPANSION MEDIDA CON TECNICAS UNIAXIALES Y TRIAXIALES

V. KUMBASAR and PENETRATION RESISTANCE OF COMPACTED COHESIVE SOILS 219 E. TOGROL RESISTANCE A LA PENETRATION DES SOLS COHERENTS COMPACTS Turkey EINDRINGWIDERSTAND VERDICHTETER BIND1GER BÖDEN RESISTENOA A LA PENETRA CION DE SUELOS COHESIVOS COMPACTADOS

B. LADANYI and USE OF THE DEEP PENETRATION TEST IN SENSITIVE CLAYS 225 W. J. EDEN UTILISATION DE L'ESSAI DE PENETRATION EN PROFONDEUR DANS LES ARGILES Cenad« SENSIBLES ANWENDUNG DES TIEFEN EINDRINGVERSUCHES IN SENSITIVEN TONEN USO DEL ENSA YE DE PENETRACION PROFUNDA EN ARCILLAS SENSITIVAS

K. L. LEE. A NOTE ON THE PORE PRESSURE PARAMETER B 231 R. A. MORRISON and NOTE SUR LE PARAMETRE B DE PRESSION INTERSTITIELLE S. C. HALEY EINE BEMERKUNG ÜBER DEN PORENDRUCKPARAMETER B u. S. A. UNA NOTA SOBRE EL PARAMETRO B DE PRESION DE PORO

K. L. LEE, EFFECT OF TRANSIENT LOADING ON THE STRENGTH OF SAND 239 H. B. SEED and EFFETS DES SURCHARGES MOMENTANEES SUR LA RESISTANCE DES SABLES P. DUNLOP WIRKUNG EINER VORÜBERGEHENDEN BELASTUNG AUF DIE FESTIGKEIT VON SAND U. S. A. EFECTOS DE CARCAS TRANSITORIAS EN LA RESISTENCIA DE LAS ARENAS

K. Y. LO. THE SHEAR BEHAVIOUR OF STIFF FISSURED CLAY 249 J. H. ADAMS and LE COMPORTEMENT AU CISAILLEMENT D'UNE ARGILE RAIDE FISSUREE J. L. SEYCHUK IMS SI III KVI H IU L II \ I INI b SI I.II1 S RISSICEN TONES Cenad* COMIIWIAMIIMO DE l.XA ARCII.I.A K 1C IDA IISL'KAOA SLJETA A EShVERZOS CURTANTES

564 G. M. LOMIZE. STUDY ON DEFORMATION AND STRENGTH OF SOIL UNDER THR EE DIMENSIONAL 257 A. L KRYZHANOVSKY STATE OF STRESS E. I. V O R O N T SO V and ETUDE SUR LA DEFORMATION ET LA RESISTANCE DES SOLS SOUS ETAT DE A . L. G O L D IN CONTRAINTE TRIDIMENSIONNEL U. S. S. R. STUDIE ÜBER DIE VERFORMUNG UND FESTIGKEIT VON BÖDEN UNTER DREIDIMEN­ SIONALEM SPANNUNGSZUSTAND ESTUDIO DE LA DEFORMA dON Y LA RESISTENCIA DE LOS SUELOS BAJO UN ESTADO TR1DIMENSIONAL DE ESFUERZOS

H. L O R E N Z and CHANGES OF DENSITY IN SANDS DUE TO LOADING 267 W. F. H E IN Z CHANGEMENT DE DENSITE DES SOLS GRANULEUX SOUS CHARGE G ffim ny ÄNDERUNG DER DICHTE IN SANDEN ENTSPRECHEND DER BELASTUNG CAMBIOS DE DENSIDAD DE LAS ARENAS DEBIDOS A CARGA

A. J. C. M IN E IR O PORE WATER PRESSURE PREDICTION UNDER PLANE STRAIN 275 Portugal PREDICTION DES PRESSIONS INTERSTITIELLES EN DEFORMATION PLANE VORAUSSAGE DES PORENWASSERDRUCKS BEI EBENER DEHNUNG PRED1CCION DE LA PRESION DE PORO EN DEFORMACION PLANA

T. M O G A M I M E C H A N IC S OF GRANULAR MATERIAL AS A PARTICULATED MASS 281 Japan MECANIQUE DES MASSIFS PULVERULENTS EN TANT QUE MILIEUX GRANULAIRES MECHANIK KORNIGEN MATERIALS ALS EINHEITUCHE MASSE MECANICA DE MATERIALES GRANULARES CONSIDERADOS COMO MEDIOS DISCRETOS

Z. C. MOH, STRENGTH AND DEFORMATION BEHAVIOUR OF BANGKOK CLAY 287 J. D. NELSON and RESISTANCE ET DEFORMABILITE DE L’ARGILE DE BANGKOK E. W. B R A N D FESTIGKEIT UND VERFORMUNGSVERHALTEN VON BANGKOK-TON Thailand RESISTENCIA Y DEFORMACION DE LA ARCILLA DE BANGKOK

S. MURAYAMA STRESS-6TRAIN—TIME BEHAVIOR OF SOILS SUBJECTED TO DE VIATORIC STRESS 297 Japan COMPORTEMENT CONTRAINTE—DEFORMATION—TEMPS DES SOLS SOUMIS A UN DEVIATEUR DE CONTRAINTE SPANNUNGS-DEHNUNGS-ZEITVERHALTEN VON BODEN, DIE SPANNUNGSANDERUNGEN UNTERWORFEN SIND CARACTERISTICAS ESFUERZO-DEFORMACION-TIEMPO DE SUELOS SUJETOS A ESFUERZOS DESVIADORES

A. MYSLIVEC EXPERIMENTAL STUDY OF UNIAXIAL SWELLING OF CLAY IN TIME 307 C n d m lM lib ETUDE EXPERIMENTALE DU GONFLEMENT UNIAXIAL DE L’ARGILE AVEC LE TEMPS VERSUCHSBERICHT ÜBER EINACHSIALES SCHWELLEN VON TON MIT DER ZEIT ESTUDIO EXPERIMENTAL DE LA EXPANSION UNIDIMENSIONAL DE ARCILLAS

J. N A R A IN , QUASI—PRECONSOLIDATION EFFECTS AND PORE PRESSURE DISSIPATION DURING 311 B.SINGH, CONSOLIDATION N. V. IY E R and LES EFFETS DE QUASI-PRECONSOLIDATION ET LA DISSIPATION DE LA PRESSION S. R.DEOSKAR INTERSTITIELLE PENDANT LA CONSOLIDA TION India QUASI-VORKONSOLIDIERUNGSWIRKUNG UND PORENDRUCKVERTEILUNG WÄHREND DER KONSOLIDIERUNG EFECTOS DE CUASI-PRECONSOUDAOON Y DISIPAdON DE PRESION DE PORO DURANTE CONSOUDAdON

565 H . NOVAIS-FERRÉIRA CLAY CONTENT ANO CONSOLIDATION 317

Pon up I TENEUR ENARGILE ET CONSOLIDA TION TONGEHALT UND KONSOLIDIERUNG El CONTENIDO DE ARCHA A Y IA CONSOLIDACION

W. H. PERLOFF and END RESTRAINT EFFECTS IN THE TRIAXIAL TEST 327 L. E.POMBO EFFETS DES RESTRICTIONS AUX EXTREMITES DES EPROUVETTES DANS L'ESSAI TRIAXIAL

U.S.A. DIE WIRKUNG DER VERBLEIBENDEN RESTSPANNUNG IM DREIACHSIALEN DRUCKVERSUCH EFECTOS DE LAS RESTRICCIONES EN LOS EXTREMOS EN EL ENSA YE TRIA XIA L

E. RECOROON et SURFACE DEFORMATION OF SOILS BY PLATE LOADING TEST 335 F.DESCOEUDRES DEFORMATION DE SURFACE DES SOLS CHARGES PAR PLAQUE

SuilM OBERFLXCHENVERFORMUNG VON BÖDEN BEIM LASTPLATTENVERSUCH DEFORMACION DE LA SUPERFICIE DEL TERRENO EN PRUEBAS DE PLACA

P. W. ROWE PROGRESSIVE FAI LURE AND STRENGTH OF A SAND MASS 341

England RUPTURE PROGRESSIVE ET RESISTANCE D'UNE MASSE DE SABLE PROGRESSIVER BRUCH UND STANDFESTIGKEIT VON SAND FALLA PROCRESIVA Y RESISTENCIA DE UNA MASA DE ARENA

A. S. SAADA and THE MECHANICAL BEHAVIOR OF CROSS ANISOTROPIC CLAYS 351 K. K. ZA MANI LE COMPORTEMENT MECANIQUE DES ARGILES ANISOTROPES U.S.A. DAS MECHANISCHE VERHALTEN VON ANISOTROPEN TONEN COMPORTAMIENTO MECANICO DE ARCILLAS ANISOTROPICAS

T. SHIBATA and CRECP RATE AND CREEP STRENGTH OF CLAYS 361 K. KARUBE RESISTANCE ET VITESSE DE FLUAGE DES ARGILES Japan KRIECHGESCHWINDIGKEIT UND KRIECHFESTIGKEIT VON TONEN VELOCIDAD DE FLUENCIA Y RESISTENCIA DE LAS ARCILLAS

N. E. SIMONS and THE INFLUENCE OF LATERAL STRESSES ON THE STRESS DEFORMATION CHARACTERISTICS 369 N. N. SOM OF LONDON CLAY

England L’INFLUENCE DES CONTRAINTES LATERALES SUR LES CARACTERISTIQUES DE DEFORMATION DE L’ARGILE DE LONDRES DER EINFLUß SEITLICHER SPANNUNGEN AUF DAS SPANNUNGS-DEHNUNGSVERHALTEN DES LONDONER TONES LA INFLUENCIA DE LOS ESFUERZOS LATERALES EN LAS CARACTERISTICAS ESFUERZO- DEFORMACION DE LA ARCILLA DE LONDRES

A. SINGH and CREEP POTENTIAL AND CREEP RUPTURE OF SOILS 379 J. K. MITCHELL POTENTIEL DE FLUAGE ET RUPTURE PAR FLUAGE DANS LES SOLS U. S. A. KRIECHVERMOGEN UND KRIECHBRUCH VON BODEN POTENCIAL DE FLUENCIA Y RUPTURA POR FLUENCIA DE LOS SUELOS

I. SOVINC DISPLACEMENTS AND INCLINATIONS OF RIGID FOOTINGS RESTING ON A LIMITED 385

Yugoslavia ELASTIC LAYER ON UNIFORM THICKNESS DESPLACEMENTS ET INCLINAISONS DE FONDATIONS RIGIDES SUR UNE COUCHE D ’EPAISSEUR FINIE ET UNIFORME VERSCHIEBUNGEN UND NEIGUNGEN VON STEIFEN FUNDAMENTEN, DIE AUF EINER BEGRENZTEN ELASTISCHEN SCHICHT VON GLEICHMÄSSIGER DICKE LIEGEN DESPLAZAMIENTOS E INCLINACIONES DE ZAPATAS RIGIDAS APOYADAS SOBRE UNA CAPA ELASTICA DE ESPESOR LIMITADO Y UNIFORME

566 H. B. SUTHERLAND THE INFLUENCE OF THE INTERMEDIATE PRINCIPAL STRESS ON THE STRENGTH 391 M. S. MESDARY OF SAND

So d i land LA CONTRAINTE PRINCIPALE INTERMEDIAIRE ET LA RESISTANCE DU SABLE OtR EINFLU0 ZWISCHENGESCIIALTETEK 1IAUPTSPANNUNUEN AUF Dlli STANDFtSTIGKElT VON SAND INFLUENCIA DEL ESFUERZO PRINCIPAL INTERMEDIO EN 1A RESISTENCIA DE IAS ARENAS

P. W. TAYLOR and DYNAMIC CYCLIC STRAIN TESTS ON A CLAY 401 D. R. BACCHUS ESSAIS DYNAMIOUES SUR UNE ARGILE A VITESSE DE DEFORMATION CONTROLEE N mv Znland DYNAMISCHE ZYKLISCHE VERFORMUNGSVERSUCHE BEI EINEM TON ENSAYES DINAMICOS DE DEFORMACION CICLICA EN UNA ARCILLA

D. U TOWNSEND, THE BRITTLE BEHAVIOUR OF NATURALLY CEMENTED SOILS 411 D. A. SANGREY and COMPORTEMENT CASSANT DES SOLS NATURELLEMENT CIMENTES U K. WALKER DAS SPRÖDIGKEITSVERHALTEN NATÜRLICH VERKITTERTEN BÖDEN Canada COMPORTAMIENTO FRAGIL DE SUELOS CEMENTADOS NATURALES

V. VENKOV EXPERIMENTAL EVALUATION OF YIELD SURFACES 419 Bulgaria DETERMINATION EXPERIMENTALE DES SURFACES DE GLISSEMENT EXPERIMENTELLE BESTIMMUNG VON FLIEßOBERFLÄCHEN EVALUACION EXPERIMENTAL DE SUPERFICIES DE FLUENCIA

S. S. VYALOV and CREEP AND LONG-TERM STRENGTH OF SOILS SUBJECTED TO VARIABLE LOAD 423 S. R. MESCHYAN FLUAGE ET RESISTANCE A LONG TERME DES SOLS SOUS CHARGE VARIABLE u. S. S. R. KRIECHEN UND LANGZEITFESTIGKEIT VON BODEN UNTER SICH ÄNDERNDER BELASTUNG FLUENCIA Y RESISTENCIA A LARGO PLAZO DE SUELOS SUJETOS A CARGAS VARIABLES

D. L WEBB RESIDUAL STRENGTH IN CONVENTIONAL TRIAXIAL TESTS 433 South Africa ESTIMATION DE LA RESISTANCE RESIDUELLE AU CISAILLEMENT DANS LES ESSAIS TRIAXIAUX CONVENTIONNELS RESTFESTIGKEIT BEI KONVENTIONELLEN DREIACHSIALVERSUCHEN RESISTENCIA REMANENTE EN ENSAYES TRIAXIALES CONVENCIONALES

K. WU TSAI and PENETROMETER METHOD FOR DETERMINING SOIL PARAMETERS 443 W. SCHMID DETERMINATION DES PARAMETRES DU SOL PAR LA METHODE DU PENETROMETRE U. S. A. PliNhTROMETERMETHODE KUR DIE BESTIMMUNG VON BODENKbNNWLRTEN DETERMINA CION DE LOS PARAMETROS DEL SUELO FOR EL METUDO DEL PENETROMETRO

A. ZUR and PORE PRESSURE DURING SHEAR FOR AN ANISOTROPIC SOIL 44‘) G. WISEMAN PRESSION INTERSTITIELLE PENDANT LE CISAILLEMENT D'UN SOL ANISOTROPE Iwael POKI N D KK K wXlIKl ND DI S ABSCIII Kl NS LIM S AM SO IKOIM N 1101)1 NS PRESIOSES DE PORO UESERADAS HÖR ESI VER/OS CURTAMIS E\ IN SL'EI.O ASISOTRUPICU

567 SESSION TWO: SEKTION ZWEI: FOUNDATIONS OF BUILDINGS IN CLAY GRUNDUNGEN VON BAUWERKEN IN TON

DEUXIEME SEANCE: SESION DOS: FONDATIONS DE STRUCTURES SUR ARGILES CIMENTACIONES DE ESTRUCTURAS EN ARCILLAS

G. D. AITCHISON and SOIL SUCTION IN FOUNDATION DESIGN J. A. WOODBURN LA SUCCION DANS LES SOLS ET LE CARCUL DES FONDATIONS Auar.ii. DER UNTERDRUCK IM BODEN BEIM ENTWERFEN VON GRÜNDUNGEN LA SUCCION DEL SUELO EN EL DISEÑO DE CIMENTACIONES

M. APPENDINO and FOUNDATION FOR A 200 m HIGH CHIMNEY ON A CLAYEY SILT 9 M. JAMIOLKOWSKY FONDATION D'UNE CHEMINEE DE 200 m SUR LIMON ARGILEUX ii.lv GRÜNDUNG EINES 200 m HOHEN SCHORNSTEINS AUF TONIGEN SCHLUFF LA CIMENTACtON PARA UNA CHIMENEA DE 200 m DE ALTURA SOBRE LIMO ARCILLOSO

A. A. BELES, PREWETTING OF LOESS-SOIL FOUNDATION FOR HYDRAULIC STRUCTURES 17 I. I. STANCULESCU and HUMIDIFICATION PREALABLE DU LOESS POUR LES FONDATIONS DES V. R. SCHALLY CONSTRUCTIONS HYDRAULIQUES Rumana ANFEUCHTEN VON LÖSS-BODEN FÜR DIE GRÜNDUNG HYDRAULISCHER KONSTRUKTIONEN INUNDACION PREVIA DE LOESS EN LA CIMENTACION DE ESTRUCTURAS HIDRAULICAS

L. BJERRUM, REDUCTION OF NEGATIVE SKIN FRICTION ON STEEL PILES TO ROCK 27 I. J. JOHANNESSEN and REDUCTION DU FROTTEMENT LATERAL NEGATIF DES PIEUX EN ACIER D. EIDE SUR ROCHE

Norway VERRINGERUNG DER NEGATIVEN MANTELREIBUNG AN STAHLPFÄHLEN AUF FELS REDUCCION DE LA FRICCION NEGATIVA EN PILOTES DE ACERO APOYADOS EN ROCA

F. BOURGES. ETUDE DU TASSEMENT DES VASES SUPPORTANT DES REMBLAIS 35 M. CARISSAN, SETTLEMENT OF ORGANIC SOFT CLAYS UNDER EMBANKMENTS J. CHIAPPA, SETZUNGEN ORGANISCHER WEICHER TONE UNTER DXMMEN J LEGRAND et ASENTAMIENTO DE ARCILLAS ORGANICAS BLANDAS BAJO TERRAPLENES J. L. PAUTE F fan ce J. D BROWN and EXPERIMENTAL STUDY OF BEARING CAPACITY IN LAYERED CLAYS 45 G G MEYERHOF UNE ETUDE EXPERIMENTALE DE LA FORCE PORTANTE DES COUCHES D'ARGILE Cjnjita VtKSUniSUKRICIIT UBER DIE TRAGFX'HIGKEIT VON TONSCHICHTEN ESTUDIO EXPERIMENTAL DE CAPACIDAD DE CARGA EN ARCII.IAS ESTRATIFICADAS

F. K. CHIN SIZE AND LOAD EFFECT ON SETTLEMENT OF FOOTINGS IN CLAY 53 M<.ia»»» EFFET DES DIMENSIONS ET DE LA CHARGE SUR LE TASSEMENT DES SEMELLES SUR ARGILE l.KOiil l'N I) UI I.ASI L'NGSLI I LKT AUI; OU: SI.TZLNU VON I I.AU 11 Nl.Kl NIH Nl.l N IN ION UlC ItlS DEL 7,1 l / l XL) Y I.A CARGA E \ LOS A S IX IA M II.Y IU S DE /.A I’M A S I X ARC /LIA

568 A. G. D A S T ID A R , APPLICATION OF SAND WICK IN A HOUSING PROJECT S. G U PTA and EMPLOI D'UN NOUVEAU TYPE DE DRAIN EN SABLE T. K. GHOSH ANWENDUNG VON SANDDRANS BEI EINEM LAGERPROJEKT

Indta EMPLEO DE UN NUEVO TIPO DE DREN DE ARENA EN UN PROYECTO HABTTACIONAL

E. H. D A V IS and ONE-OIMENSIONAL CONSOLIDARON OF LAYERED SOILS I. K. LEE CONSOLIDA TION UNIDIMENSIONNFLLE DES SOLS STRA TIFIES AuflnUa EINDIMENSIONALE KONSOLIDIERUNG VON BODENSCHICHTEN CONSOLIDACION UNIDIMENSIONAL DE SUELOS ESTRATIFICADOS

A. D V O R A K SETTLEMENT OF A MULTI-STOREY BUILDING ON HETEROGENE OUS CLAYEY SOIL C—chpb^h TASSEMENT DVN HAUT EDIFICE SUR UN SOL ARGILEUX HETEROGENE SETZUNGEN EINES VIELSTOCKIGEN GEBÄUDES AUFHETEROGENEN TON-BODEN ASENTAMIENTOS DE UN EDIFICIO DE VARIOS PISOS APOYADO EN ARCILLAS HETEROGENEAS.

K. E. E G O R O V and CALCULATION OF FOOTINGS ON COMPRESSIBLE FOUNDATION B E D S I. A. SIMVULIDI CALCULATION DES FONDATIONS SUR COUCHES COMPRESSIBLES U. S. S. R. BERECHNUNG VON FLXCHENGRUNDUNGEN AUF ZUSAMMENDRUCKBAREM GRUNDUNGSKISSEN CALCULO DE ZAPATAS SOBRE CIMENTACIONES COMPRESIBLES

M. ENDO, NEGATIVE SKIN FRICTION ACTING ON STEEL PIPE PILE IN CLAY A. MINOU, LE FROTTEMENT NEGATIF SUR PIEUX-TUYAUX EN ACIER DANS L'ARGILE T. KAWASAKI and NEGATIVE MANTELREIBUNG AN STAHLROHRPFAHLEN IN TON T. S H IB A T A FRICCION NEGATIVA SOBRE PILOTES DE ACERO EN ARCILLA

B. H. F E L L E N IU S and NEGATIVE SKIN FRICTION FOR LONG PILES DRIVEN IN CLA Y B. B. B R O M S LE FROTTEMENT NEGATIF POUR LE LONGS PIEUX BATTUS DANS L'ARGILE Swdan NEGATIVE MANTELREIBUNG FUR LANGE PFAHLE EINGETRIEBEN IN TON FRICCION NEGATIVA SOBRE PILOTES LARGOS HINCADOS EN ARCILLAS

I. FO SS SECONDARY SETTLEMENTS OF BUILDINGS IN DRAMMEN. NORW A Y Norway TASSEMENTS SECONDAIRES DE BATIMENTS A DRAMMEN , NORVEGE NACHTRÄGLICHE SETZUNGEN VON BAUWERKEN IN DRAMMEN/NORWEGEN ASENTAMIENTOS SECUNDARIOS DE EDIFICIOS EN DRAMMEN. NORUEGA

B. H A N SE N BEARING CAPACITY OF SHALLOW STRIP FOOTINGS IN CLAY Otnmrk CAPACITE PORTANTE DE SEMELLES SUR ARGILE TRAGFÄHIGKEIT VON FLACHEN STEIFENFUNDAM ENTEN IN TON CAPAODAD DE CARGA DE ZAPATAS CORRIDAS SUPERFICIALES EN ARCILLAS

H. H E IL STUDIES ON THE STRUCUTRAL RIGIDITY OF REINFORCED CO NCRETE BUILDING Gwmany FRAMES ON CLAY ETUDE DE LA RIGIDITE DES OSSATURES EN BETON ARME REPOSANT SUR ARGILE BERICHTE ÜBER DIE BAUWERKSSTEIFIGKEIT VON STAHLBETONRAHMEN AUF TON ESTUDIOS SOBRE LA RIGIDEZ ESTRUCTURAL DE MARCOS DE CONCRETO REFORZADO APOYADOS EN ARCILLAS P. J. HOADLEY, LOAD TESTING OF SLENDER STEEL PILES IN SOFT CLAYS A. J. FRANCIS and ESSAIS DE CHARGE SUR PIEUX EN ACIER DANS DES ARGUES MOLLES L. K. STEVENS BELASTUNGSVERSUCH MIT SCHLANKEN STAHLPFÄHLEN IN WEICHEN TONEN

Aunralta PRUEBAS DE CARGA DE PILOTES ESBELTOS DE ACERO EN ARCILLAS BLANDAS

J. KERISEL et ULTIMATE LOADS FOR A PILE IN CLAYEY AND SILTY SOILS M. ADAM CHARGES LIMITES D'UN PIEU EN MILIEUX ARGILEUX ET LIMONEAUX Franca GRENZLASTEN FÜR EINEN PFAHL IN TONIGEN UND SCHLUFFIGEN BÖDEN CARGAS DE FALLA DE UN PILOTE EN SUELOS ARCILLOSOS Y LIMOSOS

A. KOMORNIK and DAMAGE TO STRUCTURES ON PRECONSOLIDATED CLAY J. G. ZEITLEN DEGATS CAUSES AUX BATIMENTS SUR ARGILES PRECONSOLIDEES Inal SCHADEN AN BAUWERKEN AUF VORKONSOLIDIERTEM TON DANOS A ESTR UCTURAS SOBRE ARCILLAS PRECONSOLIDADAS

H. LEUSSINK and STORAGE YARD FOUNDATION ON SOFT COHESIVE SOILS K. P. WENZ AMENAGEMENT D'AIRES DE STOCKAGE SUR DES SOLS MOUS COHERENTS Gvmany GRÜNDUNG VON LAGERHALDEN AUF WEICHBINDIGEN BÖDEN CIMENTACION DE UN PATIO DE ALMACENAMIENTO SOBRE SUELOS COHESIVOS BLANDOS

J. MANDEL et THE BEARING CAPACITY OF SOILS ON A ROCK FOUNDATION J. SELENCON FORCE PORTANTE D'UN SOL SUR UNE ASSISE RIGIDE Franca TRAGFÄHIGKEIT VON BÖDEN AUF EINER FELSGRUNDUNG CAPACIDAD DE CARGA DE SUELOS APOYADOS EN UNA BASE RIGIDA

M. MARIOTTI at BEHAVIOUR OF PILES IN OVERCONSOLIDATED EXPANSIVE SOILS R. KHALID COMPORTEMENT DE PIEUX DANS DES SOLS SURCONSOLIDES EXPANSIFS Maroc VERHALTEN VON PFÄHLEN IN ÜBERKONSOLIDIERTEN QUELLBÖDEN COMPORTAMIENTO DE PILOTES EN SUELOS EXPANSIVOS SOBRECONSOLIDADOS

J. MATH IAN et FOUNDATION SWELLS AND DIPS OF A PLANT AND LOCK ON THE RHONE RIVER R. PAUBEL MOUVEMENTS VERTICAUX D'UNE USINE-ECLUSE DU RHONE Franca GRÜNDUNGSHEBUNGEN UND-SENKUNGEN EINER SCHLEUSE AN DER RHONE MOVIMIENTOS VERTICALES DE UNA PLANTA-COMPUERTA EN EL RIO RHONE

D. MOHAN. DESIGN AND CONSTRUCTION OF MULTI-UNDER REAMED PILES V. N. S. MURTHY an] CONCEPTION ET CONSTRUCTION DE PIEUX MULTI-ELARGIS G. S. JAIN ENTWURF UND KONSTRUKTION VON MEHRFACH ERWEITERTEN PFÄHLEN Inda DISEÑO Y CONSTRUCCION DE PILOTES CON ENSANCHAMIENTOS MULTIPLES

H. MUHS and THE INFLUENCE OF THE LOAD INCLINATION ON THE BEARING CAPACITY OF K. WE IB SHALLOW FOOTINGS Gvmany L’INFLUENCE DES EFFORTS INCLINES SUR LA FORCE PORTANTE DES SEMELLES DER EINFLUß DER NEIGUNG DER BELASTUNG AUF DIE TRAGFÄHIGKEIT FLACHER GRÜNDUNGEN INGLUENCIA DE LA 1NCLINACION DE LA CARGA EN LA CAPACIDAD DE CARGA DE ZAPATAS SUPERIFICALES E. NONVEILLER and CALCULATED AND OBSERVED SETTLEMENT OF A SILO GROUP 195 I. KLEINER TASSEMENT CALCULE ET OBSERVE D'UN GROUPE DE SILOS

Yugodavia BERECHNETE UND BEOBACHTETE SETZUNG EINER SILOGRUPPE ASENTAMIENTOS CALCULADOS Y OBSERVADOS DE UN GRUPO DE SILOS

H. G. POULOS and THE ANALYSIS OF DOWNDRAG IN END BEARING PILES 203 N. S. MATTES FROTTEMENT NEGATIF SUR DES PIEUX A POINTE PORTANTE Ataosla DIE UNTERSUCHUNG DER NEGATIVEN MANTELREIBUNG BEI SPITZEN-PFÄHLEN ANALISIS DE LA FR1CC10N NEGATIVA EN PILOTES DE PUNTA

L. C. REESE. AN INVESTIGATION OF THE INTERACTION BETWEEN BORED PILES AND SOIL 21 I W. R. HUDSON and RECHERCHES SUR L’ACTION RECIPROQUE PIEUX FORES-SOL V. N. VUAYVERGIYA EINE UNTERSUCHUNG DER WECHSELWIRKUNG ZWISCHEN BOHRPFAHLEN UND BODEN u. s. A. UNA INVESTIGACION DE LA INTERACCION PILOTE-SUELO EN PILOTES HINCADOS CON PERFORACION PREVIA

D. RESENDIZ and A PROBABILISTIC FORMULATION OF SETTLEMENT -CONTROLLED DESIGN 217 I. HERRERA PROBABILITES DES TASSEMENTS ET CRITERES DE PROJET Maxieo EIN MÖGLICHES PROGRAMM FUR DAS ENTWERFEN MITTELS SETZUNGSKONTROLLE UNA FORMULACION PROBABIUSTICA DEL DISEÑO GOBERNADO POR ASENTAMIENTOS

W. C. SHERMAN INSTRUMENTED PILE TESTS IN A STIFF CLAY 227 U. S. A. ESSAIS DE PIEUX INSTRUMENTES DANS UNE ARGILE RAIDE VERSUCHE AN MIT MEßEINRICHTUNGEN AUSGESTATTETEN PFÄHLEN IN EINEM STEIFEN TON ENSAYES DE PILOTES INSTRUMENTADOS EN UNA ARCILLA RIGIDA

T. SHUK OPTIMIZATION OF FOOTINGS IN COMPRESSIBLE SOILS 233 Coloraba DIMENSIONNEMENT OPTIMUN DES SEMELLES EN TERRAINS COMPRESSIBLES OPTIMALE BEMESSUNG VON GRUNDUNGEN IN ZUSAMMENDRUCKBAREN BÖDEN OPTIMIZACION DE ZAPATAS EN SUELOS COMPRESIBLES

A. G. STERMAC. BEHAVIOUR OF VARIOUS TYPES OF PILES IN STIFF CLAY 239 K. G. SELB Y and COMPROTEMENT DE DIFFERENTS TYPES DE PIEUX DANS UNE ARGILE RAIDE M. DEVATA VERHALTEN VERSCHIEDENER PFAHLTYPEN IN STEIFEM TON Canada COMPORTAMIENTO DE VARIOS TIPOS DE PILOTE EN ARCILLAS RIGIDAS

C. SZECHY SOME EXPERIMENTAL OBSERVATIONS RELATIVE TO THE MAGNITUDE AND 247 Hungary DISTRIBUTION OF SETTLEMENTS OBSERVATIONS EXPERIMENTALES DE L'IMPORTANCE ET DE LA REPARTITION DE TASSEMENTS EINIGE EXPERIMENTELLE BEOBACHTUNGEN UBER GROßE UND VERTEILUNG VON SETZUNGEN ALGUNAS OBSERVACIONES EXPERIMENTALES RELATIVAS A LA MAGNITUD Y DISTRIBUCION DE ASENTAMIENTOS

571 N. A. TSYTOVICH and ON THE ENGINEERING METHOD OF PREDICTING FOUNDATION SETTLEMENT 253 B. B. DALMATOV AND ITS APPLICATION

U. S. S. R. SUR LE DEVELOPPEMENT D’UNE METHODE POUR LA PREDICTION DES TASSEMENTS DES FONDATIONS ET SON APPLICATION UBER DIE TECHNISCHE METHODE DER VORHERSAGE VON SETZUNGEN VON FUNDAMENTEN UND IHRE ANWENDUNG SOBRE LA PREDICCION DE ASENTAMIENTOS DE CIMENTACIONES Y SU APLICACION

Y. K. ZAR ET SK Y CERTAIN PROBLEMS IN THE NONLINEAR CONSOLIDATED THEORY 261 L V. GORELIK and QUELQUES ASPECTS DE LA THEORIE DE LA CONSOLIDATION NON LINEAIRE B. M. NULLER GEWISSE PROBLEME IN DER THEORIE DES NICHTLINEAREN KONSOLIDIERUNG U. S. S. R. ALGUNOS PROBLEMAS EN LA TEORIA DE CONSOUDACION NO UNEAL

SESSION THREE: SEKTION DREI: EARTH AND ROCKFILL DAMS ERD-UND FELS-SCHUTTDAMME

TROISIEME SEANCE: SESION TRES: BARRAGES EN TERRE ET EN ENROCHEMENT PRESAS DE TIERRA Y ENROCAMIENTO

P. ANAGNOSTI THREE-DIMENSIONAL STABILITY OF FILL DAMS 275 YivMbvia STAB!LITE A TROIS DIMENSIONS DES BARRAGES EN TERRE DREIDIMENSIONALE STABILITÄT VON SCHUTTDAMMEN ESTABILIDAD TRIDIMENSIONAL DE PRESAS

H. K. S. Ph BEGEMANN AN OPEN PIT STORAGE FOR 1 MILLION m? OF FUEL OIL 281

Holknd UNE CITERNE ¡NON—META L LIQÜEI A CIEL OUVERT POUR LE STOCKAGE D ’UN MILLIO N DE METRES CUBES DE MAZOUT EINE OFFENE GRUBE ZUR SPEICHERUNG VON 1 MILL. mJ DIESELOLW UNA EXCAVACION PARA ALMACENAMIENTO DE UN MILLON DE METROS CUBICOS DE PETROLEO

L BERNELL and NUCLEAR RADIATION IN CONSTRUCTION CONTROL OF EARTH AND ROCKFILL DAMS 285 K. A. SHERMAN RADIATIONS NUCLEAIRES DANS LE CONTROLE DE LA CONSTRUCTION DES BARRAGES SMdm NUKLEARE STRAHLUNG BEI DER ÜBERWACHUNG VON ERD-UND FELSD'a MMEN RADIACIONES NUCLEARES EN EL CONTROL DE LA CONSIRUCCION DE PRESAS DE T1ERRA Y ENROCAMIENTO

C. M. GUILFORD and SOME SOILS ASPECTS OF THE PLOVER COVE MARINE DAM 291 H. C. CHAN QUELQUES ASPECTS DES MATERIAUX DU BARRAGE EN MER DE PLOVER COVE Hong • Kong BODENMECHANISCHE GESICHTSPUNKTE DES MATERIALS FUR DEN SEEDEICH VON PLOVER-COVE ALGUNOS ASPECTOS DE MECANICA DE SUELOS DE LA PRESA MARINA DE PLOVER COVE

572 A. L. LITTLE GEOTECHNICAL INVESTIGATIONS FOR EMBANKMENT DAMS 301 England EXPLORATIONS GEOTECHNIQUES PREALABLES A LA CONSTRUCTION DE DIGUES GEOTtniMSnil I'NTEKSU'lll'NC.LN HUR DEICIIE INVESTIGACIO.X'ES GEOTECXICAS PARA PRESAS DE TIERRA

G. MARGASON and USE OF PORE-PRESSURE MEASUREMENTS TO CONTROL EMBANKMENT CONSTRUCTION 307 I. F. SYMONS EMPLOI DES MESURES DE PRESSIONS INTERSTITIELLES POUR CONTROLER LA England CONSTRUCTION DES REMBLAIS ANWENDUNG VON TORENDRUCKMESSUNGEN ZUR KONTROLLE VON SCHUTTOAMM - KONSTRUKTIONEN USO DE MEDICIONES DE PRESION DE PORO PARA CONTROL DE CONSTRUCCION DE TERRAPLENES

A. C. MEIGH and GROVERHURST DOCK DAM, FOUNDED ON RECENT ALLUVIUM 317 E. T. HAWS BARRAGE DU BASSIN DE GROVERHURST FONDE SUR DES ALLUVIONS RECENTES England GRÜNDUNG DES GROVERHURST DOCK DAMMES AUF JUNGEM ALLUVIUM LA PRESA DEL EMBARCADERO DE GROVERHURST, CIMENTADA SOBRE DEPOSITOS ALUVIALES RECIENTES

M. MIKASA, CENTRIFUGAL MODEL TEST OF A ROCKFILL DAM 325 N. TAKADA and ESSAIS CENTRIFUGES SUR MODELE DE BARRAGE EN ENROCHEMENT K. YAMADA VERSUCHE MIT EINEM DREHBAREN MODELL EINES FELSSCHUTTDAMMES Japan MODELO CENTRIFUGADO DE UNA PRESA DE ENROCAM1ENTO

A. A. NITCHJPOROVITCH and STRAINS AND STRESSES IN EARTH AND ROCKFILL DAMS 335 A. P. SINITSYN CONTRAINTES DANS LES BARRAGES EN TERRE ET ENROCHEMENT U. S. S. R. DEHNUNGEN UND SPANNUNGEN IN ERD- UND STEINSCHÜTTUNGEN DEFORMACIONES Y ESFUERZOS EN PRESAS DE TIERRA Y ENROCA MIENTO

H. N. F. PEL LS REINFORCEMENT OF ROCKFILL DAMS IN SOUTH AFRICA 345 South Africa REINFORCEMENT DE BARRAGES EN ENROCHEMENT EN AFRIQUE DU SUD BERECHNUNG VON STEINSCHUTTDÄMMEN IN SÜDAFRIKA REFUERZO DE PRESAS DE ENROCAMIENTO EN SUDAFR1CA

H. B. POOROOSHASB and EMBANKMENT DRAINAGE AFTER INSTANTANEOUS DRAWDOWN 349 J. FORATI DRAINAGE D'UN REMBLAI APRES UN AFFAISSEMENT INSTANTANE Iran DRANAGE EINES DAMES NACH PLÖTZLICHER ABSENKUNG DRENAJE DE TERRAPLENES DESPUES DE VACIADO INSTANTANEO

B. G. RICHARDS and PREDICTION OF PORE PRESSURES IN EARTH DAMS 355 C. Y. CHAN PREDICTION DES PRESSIONS INTERSTITIELLES DANS LES BARRAGES EN TERRE Austialia VORHERSAGE DES PORENDRUCKS IN ERDDX'MMEN PREDICCION DE PRESIONES DE PORO EN PRESAS DE TIERRA

R. SINNIGER THE EARTH DAM OF PINIO S-ILIAS, GREECE. DESIGN, CONSTRUCTION AND CONTROL 363 Suisse DIGUE DE PINIOS-ILIAS, GRECE. PROJET. EXECUTION ET CONTROLE DLR IKDDAMM VON PISIOS ! LIAS/OK lit111 NLAND. LNIW IKl. ERRICHTUNG UND KO N I ROLLE !A PRESA DE TIERRA DE PISIOS II I IS. GRECIA. DISEXO. COXSTRLCCIO.X Y COXTRUI.

573 G. STEFANOFF and A DAM ON A THIN SOFT LAYER 371 Z. ZLATEREV BARRAGE SUR UNE COUCHE MINCE D'ARGILE MOLLE BuKpri. EIN DAMM AUF EINER DÜNNEN WEICHEN SCHICHT UNA PRESA SOBRE UN ESTRATO BLANDO DELGADO

H. TAYLOR PERFORMANCE OF TERZAGHI DAM, 1960 TO 1968 377 C«iada COMPORTEMENT DU BARRAGE TERZAGHI, 1960 A 1969 VORGÄNGE AM TERZAGHI-DAMM VON 1960 BIS 1969 COMPORTAMIENTO DE LA PRESA TERZAGHI, I960 A 1969

S. URIEL ROMERO DESIGN OF LOOSE FILL DAM SLOPES BY THE METHOD OF CHARACTERISTICS 387 Spam CALCUL DE TALUS DE BARRAGES EN TERRE ET ENROCHEMENT ENTWURF VON BÖSCHUNGEN UNV ERDICHT ETER SCHÜTTDX'MME MIT HILFE DER KENNWERT-METHODE DISEÑO DE TALUDES DE PRESAS DE RELLENO SUELTO POR EL METODO DE CARACTERISTICAS

B. VAN ZWOL and SOIL CEMENT DUMPING STONE IN CLOSING TIDAL INLETS 397 F. A. VAN DER SLUIS BLOCS DE SABLE CIMENT EN TANT QUE PIERRES DE DEVERSEMENT POUR FERMER

Holland LES BRAS DE MER BODEN-ZEMENT-SCHÜTTSTEINE BEIM SCHUESSEN VON TIDEOFFNUNGEN BLOQUES DE SUELO-CEMENTO A VOLTEO PARA ROMPEOLAS

SESSION FOUR: SEKTION VIER: DEEP EXCAVATIONS AND TUNNELLING IN TIEFER AUSHUB UND TUNNELBAU IN SOFT GROUND WEICHEM UNTERGRUND

QUATRIEME SEANCE: SESION CUATRO: EXCAVATIONS PROFONDES ET CONSTRUCTION DE EXCAVACIONES PROFUNDAS Y CONSTRUCCION DE TUNNELS EN TERRAINS DE FAIBLE RESISTANCE TUNELES EN TERRENO BLANDO

J. P. BAILLY, FIELD STUDY OF A CELLULAR BULKHEAD FOR AN EXCAVATION 407 J. L BASSAL, EXPERIMENTATION SUR LE BATARDEAU D ’UNE EXCAVATION G. PILOT A FELDVERSUCH ÜBER EINER ZELLENFANGEDAMM EINER BAUGRUBE F. SCHLOSSER ESTUDIO EXPERIMENTAL DE LA TABLESTACA DE UNA EXCAVACION Franca

K. BOUTSMA and SOIL MECHANICAL ASPECTS OF THE METRO CONSTRUCTION IN ROTTERDAM 417 E. HORVAT QUELQUES ASPECTS GEOTECHNIQUES DE LA CONSTRUCTION DU METRO DE Holland ROTTERDAM BODENMECHANISCHE ASPEKTE BE1M BAU DER U-BAHN IN ROTTERDAMM ASPECTOS DE MECANICA DE SUELOS DE LA CONSTRUCCION DEL METRO DE ROTTERDAM

J. L. DESSENNE, CHALK, AT THE LABORATORY AND IN A DEEP TUNNEL 423 G. COMES, LA CRAIE. AU LABORATOIRE ET DANS UN TUNNEL PROFOND P. DUFFAUT « KREIDE IM LABORATORIUM UND IN EINEM TIEFEN TUNNEL P. GERARD LA TIZA EN EL LABORATORIO Y EN UN TUNEL PROFUNDO Franca 574 M. I.GORBUNOV-POSSADOV. ANALYSIS OF SOIL EMBEDDED STRUCTURES 433 S. S. DAVYDOV, CALCULATION DES CONSTRUCTIONS ENFONCEES DANS LE SOL A. B. ORGRANOVICH and BERECHNUNG IM BODEN EINGESCHLOSSENER BAUWERKE L N. REPNIKOV ANALISIS DE ESTRUCTURAS ENTERRADAS u. S. S. B.

J. HUDER DEEP BRACED EXCAVATION WITH HIGH GROUND WATER LEVEL 443 Switzerland ETAIEMENT D'UNE EXCAVATION PROFONDE DANS LA NAPPE TIEF ABGESTEIFTER AUSHUB MIT HOHEM GRUNDWASSERSPIEGEL EXCAVACION PROFUNDA APUNTALADA CON NIVEL FREATICO ALTO

I. PFISTER, GROUND FREEZING FOR CROSSING A SIXTY METER TRIASSIC CRUSHED ZONE 449 J. NORBERT, TRAVERSEE SOUS CONGELATION DE SO m. DE TRIAS ECRASE R. BARBEDETTE et BODENGEFR1ERUNG FUR DIE DURCHTEUFUNG EINER 60 m. DICKEN GESTÖRTEN G. POTEVIN TRIASZONE Su Im CRU CE DE UNA ZONA TR1ASICA TRJTURADA DE 60 m. MEDIANTE CONGELA OON

J. M. RODRIGUEZ B. and STRUT LOADS RECORDED IN A DEEP EXCAVATION IN CLAY 459 C. L. FLAMAND MESURE DES EFFORTS DANS LES ETRESILLONS D'UNE EXCAVATION PROFONDE

Mexico EN ARGILE STREBENBELASTUNGEN GEMESSEN IN EINER TIEFEN BAUGRUBE IN TON REGISTRO DE CARGAS EN LOS PUNTALES EN UNA EXCA VACION PROFUNDA EN ARCILLA

J. ROSSMAN D. DIFFICULTIES OF TUNNELLING IN PLIOCENE CLAYS 469 Poland DIFFICULTES DE PERCEMENT DE TUNNELS DANS DES ARGILES DU PLIOCENE SCHWIERIGKEITEN DER DURCHTUNNELUNG PUOZÄNER TONE PROBLEMAS DE EXCA VACION DE TUNELES EN AROLLAS DEL PUOCENO

U. SMOLTCZYNK and EARTH PRESSURE REDUCTION IN FRONT OF A TUNNEL SHIELD 473 P. HOLZMANN REDUCTION DE LA POUSSEE DES TERRES AU FRONT D'UN BOUCLIER DE TUNNEL Gar many ERDDRUCKMINDERUNG VOR EINEM TUNNELSCHILD REDUCCION DE LA PRESION DE TIERRA EN EL FRENTE DEL ESCUDO EN UN TUNEL

CH. VEDER O. and BEHAVIOUR OF CONCRETE POURED UNDER BENTONITE SUSPENSIONS 483 H. KEINBERGER COMPORTEMENT DU BETON COULE SOUS SUSPENSION DE BENTONITE Aunria VERHALTEN VON GUßBETON UNTERHALB -VON BENTONITSUSPENSIONEN COMPORTAMIENTO DE CONCRETO VACIADO BAJO SUSPENSIONES BENTONITICAS

Cl. VINNEL et SHIELD TUNNELLING IN BRUSSELS'SAND 487 A. HERMAN TUNNEL DANS LE SABLE DE BRUXELLES PAR LA METHODE DU BOUCLIER Belgique SCHILDVORTRIEB BEIM TUNNELBAU IN BRÜSSELER SAND TUNELES EN LA ARENA DE BRUSELAS POR EL METODO DEL ESCUDO

SESSION FIVE: SEKTION FÜNF: STABILITY OF NATURAL SLOPES AND EMBANKMENT STANDFESTIGKEIT NATÜRLICHER BÖSCHUNGEN FOUNDATIONS UND DAMMGRUNDUNGEN

CINQUIEME SEANCE: SESION CINCO: STABILITE DES TALUS NATURELS ET DES ESTABILIDAD DE TALUDES NATURALES Y DE FONDATIONS DE REMBLAIS CIMENTACIONES DE TERRAPLENES

575 P. J. A V G H ER IM O S and DRAWDOWN FAILURES OF CENTRIFUGED MODELS 497 A. N. SC H O F IE LD RUPTURES PAR VIDANGE RAPIDE DANS LES MODELES CENTRIFUGES

England VERSAGEN BEI PLÖTZLICHER ABSENKUNG IN ZENTRIFUGALMODELLEN FALLAS FOR VACIADO RAPIDO EN MODELOS CENTRIFUGADOS

F. E M M A N U E L B A R A T A LANDSLIDES IN THE TROPICAL REGION OF RIO DE JANEIRO 507

Bradi GLISSEMENTS DE TERRES DANS LA REGION TROPICALE DE RIO DE JANEIRO ERDRUTSCHUNGEN IN DER TROPISCHEN ZONE VON RIO DE JANEIRO DESLIZAMIENTOS EN LA REGION TROPICAL DE RIO DE JANEIRO

E. E. D E B E E R EXPERIMENTAL DATA CONCERNING CLAY SLOPES 517 Belgium DONNEES EXPERIMENTALES CONCERNANT DES TALUS DANS DES ARGILES VERSUCHSERGEBNISSE AN TONBOSCHUNGEN DATOS EXPERIMENTALES SOBRE TALUDES EN ARCILLAS

K. BIERNATOWSKI STABILITY OF SLOPES IN PROBABILISTIC SOLUTION 527 Poland SOLUTION PAR LES PROBABILITES DU PROBLEME DE LA STABILITE DES PENTES EIN FELDVERSUCH UBER DIE URSACHEN SCHNELLER RUTSCHUNGEN IN TON SOLUCION PROBABILISTIC* DE ESTABILIDAD DE TALUDES

I- BJERRUM, A FIELD STUDY OF FACTORS RESPONSIBLE FOR QUICK CLAY S L ID E S 531 T. LO KEN , ETUDE SUR PLACE DES FACTEURS RESPONSABLES DES GLISSEMENTS EN S. H E IB E R G and ARGILES TRES SENSITIVES R. FO STER EIN FELDVERSUCH UBER DIE URSACHEN SCHNELLER RUTSCHUNGEN IN TON

Nonw y UN ESTUDIO DE CAMPO SOBRE LOS FACTORES RESPONSABLES DE DESLIZAMIENTOS EN ARCILLAS SUPERSENSITIVAS

J. T. C H R IST IA N and A ONE-DIMENSIONAL MODEL FOR PROGRESSIVE FAILURE 541 R. V. W H IT M A N UN MODELE UNIDIMENSIONNEL POUR LA RUPTURE PROGRESSIVE

U. S. A. EINDIMENSIONALES MODELL FUR FORTSCHREITENDEN BRUCH MODELO UNIDIMENSIONAL DE FALLA PROGRESIVA

A. J. D A C O ST A N U N E S LANSLIDES IN SOILS OF DECOMPOSED ROCK DUE TO INTENSE RAINSTORMS 547 Brazil GLISSEMENTS DE TERRE DANS LES FORMATIONS DE ROCHER DECOMPOSE RUTSCHUNGEN IN BODEN AUS VERWITTERTEM FELS INFOLGE INTENSIVER REGENSTURME DESUZAMIENTOS EN SUELOS DE ROCA INTEMEPERIZADA DEBIDOS A PRECIPTTAaON INTENSA

F. ESU and SLOPE STABILITY IN AN OVERCONSOLIQATED CLAY 555 G. C A L A B R E S I STABILITE DES TALUS DANS UNE ARGILE SURCONSOLIDEE Italy BOSCHUNGSSTABIUTAT IN EINEM UBERKONSOUDIERTEN TON ESTABILIDAD DE TALUDES EN UNA ARCILLA SOBRECONSOUDADA

W. D. F IN N Jr. and SEISMIC RESPONSE OF SLOPES 565 R. A. S U L L IV A N REACTION SISMIQUE DES PENTES U. S. A. SEISMISCHES VERHALTEN VON BÖSCHUNGEN RESPUESTA DE TALUDES A SOLICITACIONES SISMICAS

576 TW O SUDES IN OVERCONSO LI DATED PLEISTOCENE CLAYS 571 DEUX GLISSEMENTS DE PENTES DANS DES ARGILES DU PLEISTOCENE SURCONSOLIDEES ZWEI RUTSCHUNGEN IN UBERKONSOLIDIERTEN PLEISTOZANEN TONEN DOS DESUZAMIENTOS EN AROLLAS SOBRECONSOUDADAS DEL PLEISTOCENO

THE DJATILUHUR DAM. PROBLEMS POSED BY ITS FOUNDATIO N S 577 BARRAGE DE DJATILUHUR. PROBLEUES POSES PAR SA FONDATION DIE PROBLEME DES DJATILUHUR DAMMES DARGESTELLT AN SEINER GRÜNDUNG LA PRESA DE DJATILUHUR. PROBLEMAS PRESENTADOS POR SU CIMENTACION

THE STABILITY OF SLOPES CUT INTO NATU RAL ROCK 585 STABILITE DES PENTES EN ROCHE NATURELLE DIE STANDFESTIGKEIT VON FELSEINSCHNITTEN ESTABILIDAD DE TALUDES EXCAVADOS EN ROCA NATURAL

SLICKENSIDES IN RESIDUAL SOILS AND THEIR ENGINEERIN G SIGNIFICANCE 591 LES MIROIRS DE FAILLE DANS LES SOLS RESIDUELS ET LEUR SIGNIFICATION POUR LE GENIE CIVIL HARNISCHFLACHEN IN VERWITTERUNGSBODEN UND IHRE TECHNISCHE BEDEUTUNG "SUCXENSIDES" EN SUELOS RESIDUALES Y SU IMPORT AN CIA INGENIERIL

INSTRUMENTATION OF A NEW CHANNEL IN SOFT GROUND 599 INSTRUMENTS DE MESURE DANS UN CANAL EN TERRAIN OF FAIBLE RESISTANCE MEßEINRICHTUNG EINES NEUEN KANALS IN WEICHEM BODEN INSTRUMENTACION DE UN CANAL EN SUELO BLANDO

FAILURES AT KIMOLA FLOATING CANAL IN SOUTHERN FINLA N D 609 GLISSEMENTS OBSERVES AU CANAL DE FLOTTAGE DE KIMOLA DANS LE SUD DE LA FINLANDE RUTSCHUNGEN AM KIMOLA FLUßKANAL IN SUDFINNLAND FALLAS EN EL CANAL DE KIMOLA EN EL SUR DE FINLANDIA

LANDSLIDE IN LOESS ALONG THE BANK OF THE DANUBE 617 GLISSEMENT DANS UN LOESS AU BORD DU DANUBE RETSCHUNGEN IM LOSS ENTLANG DES DONAU-UFERS DESLIZAM1ENTO EN LOESS EN LAS MARGENES DEL DANUBIO

EMBANKMENT FAILURE ON ORGANIC CLAY 627 RUPTURE D'UN REMBLAI SUR ARGILE ORGANIQUE DAMMBRUCHE AUF ORGANISCHEM TON FALLA DE UN TERRAPLEN SOBRE ARCILLA ORGANICA

STABILITY OF SLOPES WITH CURVATURE IN PLANE VIEW 635 STABILITE DES PENTES A TRACE COURSE Ehl PLAN STANDFESTIGKEIT VON BÖSCHUNGEN MIT GEKRÜMMTEN GRUNDRIß ESTAB1UDAD DE TALUDES CON CURVATURA EN PLANTA

577 U. NASCIMENTO A METHOD OF STRESS ANALYSIS IN EXCAVATION SLOPES Portu^l METHODE DE CALCUL DES CONTRAINTES DANS LES TALUS DE DEBLAIS EINE METHODE DER SPANNUNGSVERECHNUNG VON AUSHUBBOSCHUNGEN UN METODO DE ANALISIS DE ESFUERZOS EN TALUDES DE EXCA VACION ES

A. H. PEYNIRCIOGLU INVESTIGATION OF LANDSLIDES ON A NATURAL SLOPE AND RECOMMENDED

Turkey MEASURES ETUDES DE LA STABILITY D'UN TALUS NATUREL ET LES MESURES RECOMMANDEES RUTSCHUNGSUNTERSUCHUNGEN AN EINER NATÜRLICHEN BÖSCHUNG UND EMPFOHLENE MAßNAHMEN INVESTIGACION DE DESLIZAMIENTOS EN UN TALUD NATURAL Y LAS MEDIDAS RECOMENDADAS

S. PRAKASH, SEISMIC ANALYSIS OF STABILITY OF SLOPES S. SARAN and ANALYSE SISMIQUE DE LA STABILITE DES PENTES P. PURUSHOTHAMARAJ SEISMISCHE UNTERSUCHUNGEN DER STABIUTAT VON BÖSCHUNGEN Indb ANALISIS SISMICO DE ESTABILIDAD DE TALUDES

B. V. RANGANATHAM, STRENGTH ANISOTROPY ON SLOPE STABILITY AND BEARING CAPACITY OF CLAYS A. C. SANI and EFFETS DE L'ANISOTROPIE DE LA RESISTANCE SUR LA STABILITE DES PENTES ET V. SREENIVASULU LA FORCE PORTANTE DES ARGILES

Indie ANISOTROPIE DER FESTIGKEIT BEI STANDSICHERCHEIT VON BÖSCHUNGEN UND BEI DER TRAGFÄHIGKEIT VON TONEN EFECTOS DE LA RESISTENCIA ANISOTROPICA DE LAS ARCILLAS EN LA ESTABIUDAD DE TALUDES Y LA CAPACIDAD DE C4RGA

A. RICO, TEST EMBANKMENTS ON TEXCOCO LAKE G. MORENO and REMBLAIS D'ESSAI DANS LE LAC DE TEXCOCO G. GARCIA VERSUCHSDAMME IM TEXCOCO-SEE Mexluo TERRAPLENES DE PRUEBA EN EL LA GO DE TEXCOCO

M. SAITO FORECASTING TIME OF SLOPE FAILURE BY TERTIARY CREEP J^an PREDICTION DU MOMENT DE RUPTURE D'UN TALUS PAR FLUAGE TERTIAIRE VORAUSSAGE DES ZEITPUNKTS EINES BOSCHUNGSBRUCHES DURCH TERTIÄRES KRIECHEN PREDICCION DEL TIEMPO A LA FALLA DE TALUDES EN ESTADO DE FLUENCIA

Y. TCHENG et LARGE SCALE EARTH PRESSURE EXPERIMENTS E. ABSI POUSSEE ET BUTEE EN VRAIE GRANDEUR France GRO0MA0STABLICHE ERDDRUCKVERSUCHE ESTUDIO DE EMPUJES ACTIVO Y PASIVO A ESCALA NATURAL

G. I. TER-STEPANIAN and MULTI-STORIED LANDSLIDES AND STRENGTH OF SOFT CLAYS M. N. GOLDSTEIN GLISSEMENTS DE TERRE ETAGES ET RESISTANCE DES ARGILES MOLLES u. s. S. R. KETTENRUTSCHUNGEN UND FESTIGKEIT WEICHER TONE DESLIZAMIENTOS MULTIPLES Y RESISTENCIA DE ARCILLAS BLANDAS REPORT FROM THE ORGANIZING COMMITTEE

COMPTE RENDU DU COMITE D'ORGANISATION

1. HISTORY AND ORGANIZATION OF THE CONFER­ 1. HISTOIRE ET ORGANISATION Dû CONGRES ENCE Au cours du Congrès de Montréal, le Comité The Executive Comnittee during its meetings Directeur a élu la ville de Mexico comme in the Montreal Conference, chose by vote Sidge du prochain Congrès International. A Mexico City as the place for the next Inter Montréal également, le Comité Directeur a national Conference. Also in Montreal, the nommé un Comité Consultatif chargé de con­ Executive Committee appointed an Advisory seiller le Comité d'organisation pour toutes Comnittee, with the purpose of adivising the les questions relatives aux préparatifs de la Organizing Committee in laying out plans for réunion. Le Comité Consultatif comprenait the Conference. The Advisory was integra­ le Président, les ex-Présidents, et les Vice- ted by the President, Past-Presidents and Présidents de la Société Internationale. Vice-Presidents of the International Socie­ ty. En octobre 1965, la Société Nationale Mexi­ caine a nommé un Comité d'organisation prési^ The Mexican National Society appointed the dé par M. Nabor Carrillo. Le 28 octobre 1965, Organizing Comnittee in October, 1965, under une lettre a été envoyée à toutes les Sociétés the chairmanship of Dr. Nabor Carrillo. In nationales a fin de solliciter leurs sugges­ October 28, 1965, a letter was sent to all tions au sujet de la date du Congrès. La National Comnittees, requesting suggestions majorité d'entre eux ayant opté pour la der­ for the date to hold the Conference. The ma nière semaine d'aoQt, cette période fut re­ jority of replies favoured the last week of tenue. Le Comité d'organisation s'est réuni August, and accordingly, this was selected. à plusieurs reprises avant la fin de l'année Before the end of 1965, the Organizing Com­ 1965, afin de commencer à discuter de la pré mittee met several tiroes to start discussing paration du Congrès, sans négliger à cet plans for the Conference. To this effect, égard, les suggestions repues de Montréal. suggestions received in Montreal were con­ Il fut bientôt décidé que le Congrès aurait sidered. It was soon decided that the Con­ lieu à la Unidad de Congresos del Centro Mé- ference was to take place in the Unidad de dico Nacional, étant donné les facilités of­ Congresos del Centro Medico Nacional, on ac­ fertes par ce Centre pour les réunions techni. count of its excellent facilities for techni ques. cal meetings. Pendant toute la période de préparation, le During the time when plans for the Confer­ Comité d'organisation est resté en contact ence were being laid out, the Organizing Com étroit avec le Comité Consultatif dont il a mittee maintained in close contact and re­ repu d'excellentes recommandations, de même ceived valuable recommendations from the Ad­ qu'avec divers membres éminents de la Socié­ visory Comnittee and individually from Bever té Internationale, en particulier avec M. al prominent members of the International So Laurits Bjerrum, Président, et le Prof. Ar­ ciety. In particular. Dr. Laurits Bjerrum, thur Casagrande, ex-Président, qui lui ont President, and Prof. Arthur Casagrande, for­ fourni, à plusieurs reprises, de précieux mer President, provided invaluable advise on conseils. several occasions. A la suite des échanges mentionnés ci-dessus, As a result of the above consultations, the le Comité d'organisation décida d'introduire Organizing Committee decided to introduce différents changements par rapport au déroule the following changes with respect to the ment des congrès antérieurs. Ces change­ format of previous conferences: ments étaient les suivants:

581 a. To hold technical meetings during five a. Les réunions techniques auraient lieu en consecutive days in a single week une seule semaine pendant cinq journées consécutives b. To abandon covering the whole field of soil mechanics with the subjects of the b. On renonçait à couvrir l'ensemble de la Main Sessions, and limit these to five, Mécanique des Sols et les thèmes des one for each day of technical activi­ Séances Principales seraient limités à ties cinq, soit un par jour

c. To provide facilities so that interested c. Les groupes intéressés auraient toutes groups could meet in Specialty Sessions, les facilités voulues pour se rencontrer several of which could be held simul­ au cours de Séances Spéciales, dont plu­ taneously during four afternoons. These sieurs pourraient avoir lieu simultané­ meetings were to be of experimental na­ ment pendant quatre après-midi entiers. ture and designed so as to promote in­ Ces réunions auraient un caractère expé­ formal discussion of specialized topics rimental et seraient destinées à encoura by interested groups. The responsibili­ ger un libre échange d'idées sur des ty for these meetings was to be left en­ sujets spéciaux. L'initiative de ces tirely in the hands of their organizers réunions serait entièrement laissée aux organisateurs d. To decrease as much as possible the time d. On s'efforcerait de réduire l'intervalle elapsed between the deadline for sub­ entre la date limite pour la remise des mission of papers and the Conference. Ac travaux et le Congrès. Dans ce but, le cordingly, the Committee planned to pro­ Comité décida d'établir les Comptes-Ren duce both preprints in advance of the dus en respectant le format habituel Conference, and subsequently the Proceed mais à. partir d'imprimés réalisés avant ings, the latter with the format ac­ le Congrès customed in previous conferences e. Le Rapporteur Général de chaque Séance e. To entrust the General Reporter of each Principale serait chargé de préparer un Main Session, with the preparation of a Résumé des Connaissances sur le Thème State-of-the-Art paper, on the subject correspondant. of his Session. Le 19 février 1967, le Dr. Nabor Carrillo est On February 19, 1967, Dr. Nabor Carrillo décédé. Sa disparition représenta une perte passed away. His death meant a tremendous incalculable pour le Comité d'organisation loss to the Organizing Committee, since he had dont il avait été, dès l'origine, l'inspira­ been the original inspirer, promoter, and teur, le promoteur et le guide. La Prési­ leader of the organizers. Afterwards, Mr. En dence fut confiée à M. Enrique Tamez, tandis rique Tamez was appointed Chairman of the que M. Luis Ramlrez de Arellano continuait à Committee. Mr. Luis Ramirez de Arellano occuper le poste de Secrétaire Exécutif. served as Executive Secretary since the ap­ pointment of the Organizing Committee.

2. LANGUES ET INTERPRETATION 2. LANGUAGES AND INTERPRETATION Conformément aux Statuts de la Société Inter­ According to the Statutes of the Internation­ nationale, les langues officielles étaient le al Society, the official languages were franpais et l'anglais. Durant le Congrès et English and French. During the Conference, dans tdute la correspondance avec les pays and in correspondence with Spanish-speaking de langue hispanique, l'espagnol fut égale­ Countries, Spanish was also used. Bulletins ment utilisé. Bulletins et communiqués fu - and issues of News were printed in the three rent imprimés dans les trois langues. Le Co­ languages. mité d'organisation avait également prévu un service d'interprétation simultanée en fran­ The Organizing Committee thus provided simul­ pais, anglais et espagnol; les six inter­ taneous interpretation during the Main Ses­ prètes engagés ont suivi des séances d'en­ sions, among the three languages. Six in­ traînement afin de se familiariser avec la terpreters were engaged, who received in ad­ terminologie de -la Mécanique des Sols. En vance training in soil mechanics terminology, outre, le Comité d'organisation a offert aux through several briefing sessions. In addi­ Sociétés nationales d'Allemagne et d'U.R.S.S., tion, the Organizing Committee offered to the un service de traduction en russe et en alle­ National Committes of Germany and the U.S.S.R. mand mais ces derniers ont décliné cette the technical facilities for translation from offre.

582 the three above languages into German and L'interprétation simultanée n'avait pas été Russian respectively; these committees de­ prévue pour les Séances Spéciales. Néanmoins, clined the offer. les organisateurs des séances Nos. 14 et 15 avaient engagé des interprètes à leurs pro­ The Organizing Committee did not provide in­ pres frais. terpretation for the Specialty Sessions. However, the Organizers of Sessions Nos. 14 and 15 had interpretation services at their 3. BULLETINS expense. Le Bulletin N° 1 contenant le programme pré­ liminaire du Congrès a été publié en octobre 3. BULLETINS 1967. Dix mille exemplaires de cette bro­ chure ont été envoyés aux Sociétés nationales Bulletin N° 1, containing the preliminary pour être distribués à leurs membres. A cha^ program for the Conference, was distributed que bulletin était joint un formulaire d'ins. on October, 1967. Ten-thousand copies were cription. printed and sent to the National Committees for distribution among their members. A pre­ registration form was attached to each bulle On décida en outre d'imprimer un Bulletin tin. Spécial contenant des instructions détaillés au sujet de la présentation des travaux pour It was decided to print a Special Bulletin, les Séances Principales ainsi que des ren­ containing detailed instructions for the pre­ seignements sur les Séances Spéciales de créa sentation of papers to the Main Sessions and tion nouvelle; cinq mille exemplaires de ce information about the recently instituted Bulletin furent imprimés en novembre 1968 et Specialty Sessions; on November, 1968, 5,000 distribués aux participants, à raison d'un exemplaire par congressiste déjà inscrit tari copies of this bulletin were printed. A copy dis que les Sociétés nationales en recevaient was sent to each pre-registered member of the également un certain nombre. It était sti­ Conference and additional ones to all Nation pulé dans ce Bulletin que les travaux devaient al Committees. It was established in this être rédigés sur des formulaires spéciaux, bulletin that papers had to be submitted in ceci dans le but d'uniformiser la présenta­ special forms, designed to standardize pre­ tion et de permettre ainsi la reproduction sentation, thus enabling the printing of the des originaux par photo-gravure (offset) et preprints by direct photo-offset reproduc­ leur publication avant le Congrès. Ces for­ tion of the originals, as prepared by the mulaires furent envoyés à toutes les Sociétés authors. Enough copies of these forms were nationales en nombre suffisant, aux fins de sent to all National Committees, for distri­ distribution à tous les auteurs de communica bution among the authors of papers. tions.

Bulletin N# 2, whose contents were similar to those of previous conferences, was mailed Le Bulletin N° 2, de type courant, a été tiré on April, 1969, to pre-registered members and à cinq mille exemplaires et expédié en avril to the National Committees; 5,000 copies of 1969 aux membres déjà inscrits ainsi qu'aux it were printed. This bulletin contained a Sociétés nationales; ce Bulletin contenait un final registration form, a form for requesjt formulaire d'inscription définitive, un for­ ing accommodation, and one for preliminary mulaire de demande de logement ainsi qu'une registration to tours outside Mexico City. fiche d'inscription préliminaire pour les ex cursions hors de Mexico. There was also a Bulletin on Technical Visits and Tours outside Mexico City, of which 4,000 On imprima également en quatre mille exem­ copies were printed and was mailed out on plaires un Bulletin pour les Visites Techni­ July, 1969. ques et les Excursions hors de Mexico, le­ quel fut envoyé en juill-et 1969. Finally, 4,000 copies were printed of the Bulletin on Specialty Sessions. It was mail Enfin, le Bulletin concernant les Séances ed out on July, 1969. Spéciales fut tiré à quatre mille exemplaires et expédié en juillet 1969. Tous les bulLo- All bulletins were sent by air mail. tins ont été envoyés par avion.

In Mexico City, Conference members were pro­ A Mexico, les concjrossistes repurent des i>ro vided with pamphlets in the three languages, chures concernant les visites techniques, é- describing the various technical visits. ditées dans les trois la:niues ufficioLles.

583 4. NEWS 4. NOUVELLES

In order to call the attention of members of Afin d'attirer l'attention des membres de la the International Society on the coming Con­ Société Internationale sur le prochain Con­ ference and provide miscellaneous informa­ grès et de fournir aux participants des in­ tion of interest to Conference participants, formations diverses, le Comité d'organisation the Organizing Committee entrusted to Dr. chargea M. R. J. Marsal et M. D. Reséndiz de R. J. Marsal and Dr. D. Resendiz, the publi­ publier un bulletin d'actualités. Six numé­ cation of a News bulletin. Six issues of it ros, correspondant aux mois de mars, juin, et appeared before the Conference on the follow novembre 1968 et à mars, juin et juillet 1969 ing dates: March, June, and November, 1968, ont été publiés avant le Congrès et expédiés and March, June, and July, 1969, which were par avion aux membres inscrits ainsi qu'aux airmailed to pre-registered members of the Sociétés nationales. Conference and to the National Committees. Dès l'ouverture du Congrès, le lundi 25 aoât, Starting at the opening of the Conference, on un bulletin d'information quotidien a été dis. Monday, August 25, a daily News bulletin was tribué à la Unidad de Congresos à tous les prepared in English, French, and Spanish and participants. Six numéros de ce Bulletin ont distributed to all Conference Members at the paru pendant la durée du Congrès. Unidad de Congresos. Six issues were thus produced during the Conference. 5. COMPTES-RENDUS 5. PROCEEDINGS Comme il a été signalé au paragraphe 1 de ce As mentioned in point 1 of this report, the rapport, le Comité d'organisation a décidé de Organizing Committee decided early to shorten réduire au maximum le temps écoulé entre la as much as possible the time elapsed between date limite de remise des travaux et le Con­ the deadline for presentation of papers and grès. En fait, la date limite était fixée au the Conference. In fact, the deadline was es. 1er février 1969, c'est à dire moins de sept tablished on the 1st of February, 1969, less mois avant l'ouverture du Congrès. Il a été than seven months before the opening of the également décidé d'imprimer les Résumés des Conference. It was also decided to print the Connaissances préparés par les Rapporteurs State-of-the-Art papers prepared by the Gene­ Généraux dans un volume à part. Un millier ral Reporters in a separate volume. One thou­ d'exemplaires de cette brochure a été mis à la sand paper-bound extra copies of this volume disposition des étudiants et du public avant were printed and made available to students le Congrès. before the Conference and subsequently to everyone. Le Comité Consultatif proposa de limiter à 125 le nombre total des communications corres, The Advisory Committee proposed that the to­ pondant aux Séances Principales qui seraient tal number of papers pertaining the Main Ses^ publiées. Cette recommandation était fondée sions, to be printed, be limited to 125. This essentiellement sur deux considérations: en recommendation was based mainly on two facts: premier lieu, les thèmes des cinq séances First, that the topics of the five Main Ses­ principales ne recouvraient pas l'ensemble de sions did not cover the entire field of soil la Mécanique des Sols et, en second lieu, cer. mechanics, and second, that the Specialty taines contributions pouvaient être présentées Sessions provided an adequate outlet for some lors des Séances Spéciales. Le Comité d'orga of the potential contributions. The Organ­ nisation s'efforça de publier le maximum de izing Committee tried to comply as much as travaux. Finalement, 146 communications paru possible. Finally, 146 papers were printed in rent dans les deux premiers volumes des the first two volumes of the Proceedings. Comptes-Rendus. The original publication plans included the preparation of preprints, by direct photo-aff_ Le programme de publication initial compre­ set reproduction of the manuscripts, as sent nait la préparation d'imprimés, par reproduc­ by the National Committees, and after the tion directe (photo-offset) des manuscrits Conference, the production of the Proceedings envoyés par les Sociétés nationales puis, après in the accustomed format and by conventional le Congrès, la publication des Comptes-Rendus, type-setting procedures. In order to standard selon le format et la mise en pages habituels. ize the presentation of the manuscripts to en Afin d'uniformiser la présentation des manus­ able the production of the preprints, special crits et permettre ainsi la réalisation des forms were sent to all National Committees, imprimés, des formulaires spéciaux furent en­ for distribution to the authors of papers. In voyés à toutes les Sociétés nationales, aio< fins addition, the Special Bulletin contained very de distribution aux auteurs de communications. detailed instructions regarding the prepa­ Par ailleurs, le Bulletin Spécial contenait ration of text, tables, and figures. des instructions très détaillées concernant la 584 The reaction of the authors of papers to the présentation du texte, des tables et des fi­ above requirements was so enthusiastic that gures. the majority of papers, not only complied with the specifications, but had an excel­ Non seulement les auteurs de travaux suivi­ lent presentation. This unexpected and favor rent fidèlement les indications qui leur able situation made the Organizing Ccxnmittee étaient fournies mais ils s'appliquèrent même feel that a major change in its original à donner à leurs exposés une excellente pré­ publication plans was warranted, in view of sentation. Dans ces conditions, le Comité the many advantages involved in such change, d'organisation put envisager de modifier son in spite of the proximity of the Conference. projet initial et ce, malgré la proximité du The following decisions were thus taken: Congrès. On décida par conséquent de procé­ der de la manière suivante: a. To print the Proceedings by direct photo, offset reproduction of the manuscripts a. Imprimer directement les Comptes-Rendus as received from the National Committees en reproduisant par photo-gravure (off­ (actually, some improvements were made set) les manuscrits envoyés par les to several papers, specially in figures). Sociétés nationales, tout en conservant The quality of the binding was to be la même reliure que celle adoptée lors kept as for previous conferences des Congrâs antérieurs. (De légers chan­ gements furent apportés à certains tra­ b. To maintain for the two papers volumes vaux, principalement en ce qui concerne and the State-of-the-Art volume, the les figures) publication date originally set for the preprint^that is, July 1st and send them b. Maintenir la date du 1er juillet, fixée by air to overseas countries (in fact, à l'origine pour la publication des im­ the distribution to members already re­ primés, pour les deux volumes des gistered atttiat time, was started a week Comptes-Rendus et le volume contenant before) les Résumés des Connaissances et envoyer ces ouvrages par avion aux pays d'outre­ c. To reduce the price of the Proceedings mer. (En fait, la distribution de ces and State-of-the-Art volume from $600 documents aux membres déjà inscrits com­ Mex. Cy. (48 U.S.) to $300 Mex. Cy. (24 menta une semaine avant cette date) U.S.) until the closure of the Confer­ ence (the price after the Conference was c. Fixer le prix de vente des Comptes-Ren­ afterwards set at $500 Mex. Cy., that i& dus et du volume des Résumés des Con­ 40 U.S.) naissances î 300 pesos- mexicains (24 do.1 lars) au lieu de 600 pesos (48 dollars) d. To reduce the registration fees to the jusqu'à la clôture du Congrès. (Après Conference by $475 Mex. Cy. (38 U.S.). celui-ci, le prix de vente serait fixé This appreciable reduction was possible à 500 pesos soit 40 dollars). due to the radical decrease in the cost of the Proceedings and to the suppres­ sion of the new unnecessary preprints. d. Fixer le prix de l'inscription au Con­ Members who sent the previously estab­ grès à 475 pesos mexicains (38 dollars). lished fees were refunded in Mexico City Cette réduction appréciable devenait poss. by application; otherwise, refunds were ible grâce à la diminution radicale du mailed to the remaining participants, prix de revient de la publication des after the Conference. Comptes-Rendus par suite de la suppress­ ion des imprimés devenus inutiles. Les The above decisions caused some controversy membres ayant réglé à l'avance les mon­ at the beginning, but were subsequently gener tants établis à l'origine ont été rem­ ally endorsed by the Membership. The Organi­ boursés sur demande à Mexico même. Dans zing Committee feels that the reduction in les autres cas, les remboursements ont the price of the Proceedings will facilitate été expédiés aux participants après le a wider distribution of the technical mate­ Congrès. rial produced by the International Society. Après avoir fait l'objet de quelques discus­ Volumes I and II contain 146 papers presented sions, les décisions mentionnées ci-dessus to the Main Sessions. The distribution of ont été généralement admises par la suite, par papers among the National Societies, as well l'ensemble des membres. Le Comité d'organisa as the previously established quotas, are tion pense que la réduction du prix de revient shown in Table I. des Comptes-Rendus facilitera une plus large distribution des publications de la Société The present volume has been produced by the Internationale. 585 photo-offset procedure, reproducing material Les volumes I et II contiennent 146 travaux presented by the General Reporters, the au­ présentés aux Séances Principales. La distri­ thors of discussions, the Secretariat of the bution des travaux aux Sociétés nationales International Society, the organizers of the ainsi que les tarifs originaux sont indiqués Specialty Sessions, and the Organizing Com­ à la Table I. mittee itself. An effort has been made to speed up its publication. Le présent volume réalisé selon le procédé de photo-gravure, contient les exposés présentés Three thousand five hundred copies of the par les Rapporteurs Généraux, les auteurs de Proceedings were printed and bound. Of these, rapports, le Secrétariat de la Société Inter­ 1,980 were distributed before the end of the nationale, les organisateurs de Séances Spé­ Conference. Subsequently, the Proceedings ciales, et le Comité d'organisation lui-même. are being sold by: On s'est efforcé d'en accélérer la publica­ tion. SOCIEDAD MEXICANA DE MECANICA DE SUELOS,A JC. Apartado Postal 8200 Trois mille cinq cents exemplaires des Compte^ México 1, D.F. MEXICO Rendus ont été imprimés et reliés. Sur ce nombre, 1980 ont été distribués avant le Con­ Booksellers' orders will be handled by: grès. Actuellement, les Comptes-Rendus sont rais en vente par: DISTRIBUIDORA DE LIBROS UNIVERSITARIOS Insurgentes Sur 299 SOCIEDAD MEXICANA DE MECANICA DE SUELOS, A£. México 11, D.F. MEXICO Apartado Postal 8200 México 1, D.F. MEXICO In accordance with a decision taken by the • Les libraires devront adresser leurs commandes Executive Committee in Montreal, two copies à: of a paper-bound volume containing the ab­ stracts of all papers accepted for the Main DISTRIBUIDORA DE LIBROS UNIVERSITARIOS Sessions, were airmailed to all National Com Insurgentes Sur 299 mittees at the beginning of May, 1969. México 11, D. F. MEXICO

6 . CONFERENCE PARTICIPATION Conformément à la décision prise à Montréal par le Comité Directeur, un volume broché con Table II gives the detailed distribution of tenant les résumés de tous les travaux accep­ participants in the Conference. tés pour les Séances Principales a été envoyé par avion en deux exemplaires à toutes les So­ ciétés nationales, au début du mois de mai 1969. 7. EXECUTIVE COMMITTEE

The Executive Committee of the International 6 . PARTICIPATION AU CONGRES Society met on the 22 and 23 of August, in Auditorium N° 3 of the Unidad de Congresos, La Table II contient des références détaillées under the chairmanship of Dr. Laurits Bjerrum. concernant les participants. Each Member Country was represented by two delegates. The list of delegates and the mi­ 7. COMITE DIRECTEUR nutes of the meetings are printed in this volume, pages 13 to 33. The Organizing Com­ Le Comité Directeur de la Société Internatio­ mittee provided simultaneous interpretation nale s'est réuni les 22 et 23 août, à 1'Audi­ and secretarial services. The draft of the torium N°3 du Centre des Congrès, sous la pré minutes of each meeting was distributed to sidence de M. Laurits Bjerrum. Chaque pays delegates on the following day, and the final membre était représenté par deux délégués. La version, in English and French, was ready be­ liste des délégués et les actes des réunions fore the end of the Conference. figurent dans ce volume, pages 13 à 33 . Le Comité d'organisation avait prévu un service de secrétariat et d'interprétation simultanée. 8 . MAIN SESSIONS Les minutes de chaque réunion furent distri­ buées aux délégués le jour suivant et la ver­ The General Reporters were appointed on July sion finale, en français et en anglais, fut 26, 1967; the Panelists on November 25, 1968, publiée avant la fin du Congrès. and Session Chairmen on November 29, 1968. There was a good deal of correspondence bet­ ween the Organizing Committee and participants 8 . SEANCES PRINCIPALES in the sessions, prior to the Conference. In addition the Chairman and later on the Execu- Les Rapporteurs Généraux ont été désignés le

586 tive Secretary of the Organizing Committee, 26 juillet 1967; les membres du Comité de Dis traveled to exchange ideas with the General cussion, le 25 novembre 1968 et les Présidents Reporters and several other prominent members de Séance, le 29 novembre 1968. Une abondante of the International Society. Both paid a correspondance a été échangée avant le Con­ visit to the President of the International grès entre le Comité d'organisation et les Society, to firm up plans for the Conference. participants. En outre, le Président, puis On Sunday, August 24, a briefing session was le Secrétaire Exécutif, ont effectué plu­ attended by all participants in the Main Ses­ sieurs voyages afin d'échanger des idées avec sions. Afterwards, on the same and following les Rapporteurs Généraux et plusieurs mem­ days, the Chairman, General Reporter, Pane­ bres éminents de la Société Internationale. lists, and Secretary of each Session met to L'un et l'autre ont rendu visite au Présider!: arrange the necessary final details. For each de la Société Internationale, afin de mettre Session, the Chairman and General Reporter au point ensemble la prógramme du Congrès. were given freedom to decide the layout of the Session. Le dimanche 24 août, eut lieu une séance d'in formation à laquelle assistèrent tous les There were five Main Sessions. Only one Ses­ participants aux Séances Principales. Les sion took place each day, from Monday to Fri­ jours suivants, le Président, le Rapporteur day. All Main Sessions were held in Audito­ Général, les membres du Comité de Discussion rium N° 1 of the Unidad de Congresos. Each et le Secrétaire se sont réunis afin de met­ session started with a "State-of-the-Art" lec tre au point les détails de leur Séance res­ ture by the General Reporter, followed by a pective. L'organisation des Séances était panel discussion by specialists. Subsequent­ laissée à l'initiative du Président et du ly, there were in some cases questions posed Rapporteur Général. by members of the audience and also discus­ sions from the floor. Discussers were asked Il y eut cinq Séances Principales, à raison to register during the recess. All morning d'une par jour, du lundi au vendredi. Toutes sessions started at 9:30 hours and adjourned les Séances Principales ont eu lieu a 1'Audi­ between 12:30 and 13:00 hours. The audience torium N° 1 du Centre des Congrès. Au début always exceeded 1,000 persons. de chaque Séance, le Rapporteur Général pro­ cédait à la lecture d'un Résumé des Connais­ 9. SPECIALTY SESSIONS sances sur le thème, aprâs quoi les spécia­ listes du Comité de Discussion entamaient Eighteen Specialty Sessions (thirteen pro­ les débats. Dans certains cas, des questions posed by the Advisory Committee and five re­ étaient posées par des membres de l'auditoire quested by the interested groups) took place ou bien la parole était donnée aux orateurs. in the afternoons from Tuesday to Friday. Two Pour avoir le droit de prendre la parole, il days, six such sessions were carried out si­ était nécessaire de s'inscrire entre les séarj. multaneously and the other two days, there ces. Toutes les séances du matin commencè­ were five simultaneous sessions. Since one rent Il 9h.30 et se terminèrent entre 12h.30 of the purposes of these sessions was to find et 13h.OO. Le nombre d'auditeurs dépassa tou by experiment, what type of sessions will be jours le chiffre de 1,000. more desirable for future conferences, only broad guidelines were established, and each session organizer gave his a particular 9. SEANCE SPECIALES character. As a result, these sessions varied from informal discussions with very little Dix-huit Séances Spéciales, dont treize pro­ advance preparation, to rather formal meet­ posées par le Comité Consultatif et cinq or­ ings, in the way of simposia, for which pa­ ganisées à la demande des groupes intéressés pers were solicited, panel discussions took ont eu lieu l'après-midi, du mardi au vendre place and proceedings were to be published. di. Les séances se sont déroulées simultané, Some of the sessions met on two consecutive ment à raison de six pendant deux jours, et afternoons. de cinq pendant les jours suivants. Comme il s'agissait de réaliser une sorte d'expérience The facilities at the Unidad de Congresos afin d'établir, en vue des futurs congrès, la turned out quite adequate for this type of formule qui convient le mieux pour des séan­ meeting since there were seven lecture halls ces de ce genre, chaque organisateur fut en­ available within the Unidad de Congresos with tièrement libre d'organiser sa séance comme capacities ranging from 85 to 350 persons. il l'entendait. C'est pourquoi ces réunions Members could easily go from one auditorium furent très différentes les unes des autres, to another if they so desired. certaines ayant un caractère d'improvisation tandis que d'autres furent de véritables sym­ posiums, avec communications, comités de dis­ The responsibility for these sessions was in cussion, et publication de Comptes-Rendus. 587 the hands of the respective organizers to Certaines eurent lieu pendant deux aprds-midi whom all requests for information should be consécutifs. addressed. They were only requested to sub­ mit a summary report, for publication in this Les installations du Centre des Congrès se pr£ volume (see pages 417 to 554 ). It is hoped tèrent parfaitement à ce type de réunion. Il that the varied outcome of these numerous y avait en effet cinq salles de conférence meetings will help in deciding how should disponibles, d'une capacité de 85 à 350 per­ sessions be carried out in future conferences. sonnes. Les Congressistes pouvaient se ren­ The Organizing Committee also put at the dis­ dre facilement d'un auditorium à l'autre. posal of several groups interested in holding discussions, some of the committee rooms a- L'initiative de ces séances était laissée aux vailable at the Unidad de Congresos. organisateurs, auxquels toute les demandes d'information devaient être adressées, ces derniers étant seulement priés de remettre un 10. TECHNICAL FILMS rapport sommaire destiné à paraître dans ce volume (Voir pages 417 à 554 ). Les résultats In the afternoons, from Tuesday August 26 to divers de ces nombreuses réunions devraient Friday 29, technical films were projected in permettre de déterminer la meilleure formule Auditorium N° 1 of the Unidad de Congresos. à suivre lors des prochains congrès. Le Co­ The highlight of this activity was a film on mité d'organisation avait également mis quel­ the soil mechanics aspects of the lunar soil ques unes de ses salles & la disposition des and the first landing of man on the moon. groupes qui désiraient tenir des séances de These latter films were illustrated with talks discussion. by Professors Scott and Mitchell. In addi­ tion 16 other films were projected, among them several showing various aspects of soil ÎO. FILMS TECHNIQUES mechanics work in Mexico. Du mardi 26 au vendredi 29 août, pendant les après-midi, des films techniques ont été pro­ 11. TECHNICAL VISITS jetés à l'auditorium N° 1 du Centre des Con­ grès. Le plus remarquable de la série fut un One of the main attractives for Conference film présentant, d'une part, les aspects du Members was the chance to obtain first-hand sol lunaire du point de vue de la Mécanique information on the clay of the Valley of Me­ des Sols et d'autre part, les différentes xico with the well-deserved reputation for phases de l'alunissage. Ces deux documentai­ creating most unfavorable conditions to all res furent commentés par les Professeurs kinds of construction projects. Scott et Mitchell. En outre, 16 autres films furent projetés dont plusieurs montrant dif­ At the time of the Conference, there were férents problèmes et travaux de mécanique des important construction operations in Mexico sols à Mexico. City and its vicinity, which posed interest­ ing soil mechanics problems. Foremost among these were the construction of the subway 11. VISITES TECHNIQUES lines and the deep sewage system. Also a visit was paid to the soil mechanics labora­ L'un des principaux intérêts du Congrès tory of the Institute of Engineering of the était de permettre aux congressistes- d'exami­ National University. ner de près l'argile de la Vallée de Mexico justement renommée pour être l'une des plus Technical visits took place in the afternoons, défavorables en matière de fondations. from Tuesday to Friday and also on Sunday morning, August 31. In addition, by special A l'époque de la Conférence, il y avait juste arrangement, some Conference Members conti­ ment à Mexico même et dans ses environs, d'im nued to inspect construction sites and labaca portants travaux de construction en cours qui tories, on the week following the Conference. posaient d'intéressants problèmes de mécani­ que des sols. Il y avait principalement la A description of the Technical Visits is construction du métro et du grand réseau de found in page 595 of this volume. drainage des eaux d'égout. Une visite eut lieu également à l'institut de Génie Civil de l'Université Nationale. Les visites techni­ 12. EXHIBITS ques se déroulèrent pendant l'après-midi, du mardi au vendredi, ainsi que dans la matinée In the lower floor of the Unidad de Congre­ du dimanche 31 août. En outre, et grâce à so^ an exhibition was arranged, with two kinds des arrangements spéciaux, certains congres- 588 of exhibits: sistes purent continuer à visiter les chan­ tiers et les laboratoires pendant la semaine a. Government and research organizations in que suivit la Conférence. Mexico dealing with soil mechanics La description de ces visites techniques fi­ problems, presented aspects of their gure dans ce volume, page 595 work

b. Twenty-six manufacturers of soil me­ 12. EXPOSITIONS chanics equipment, exhibited their pro­ ducts, with emphasis on field instumen- Le sous-sol du Centre des Congrès fut trans­ tation formé en Salon d'Exposition. Les expositions étaient de deux types:

a. Les services officiels de recherche et The Mexican Society for Soil Mechanics oper­ de travaux publics présentèrent diffé­ ated a stand where several books on soil me­ rentes réalisations en rapport avec la chanics were on sale. There were also other mécanique des sols book stands. b. Vingt-six fabricants d'équipement de mé All exhibits were visited with interest by canique des sols exposèrent leur maté­ the majority of Conference participants. riel, principalement des instruments de mesure in situ. 13. OPENING AND CLOSING SESSIONS La Société Mexicaine de Mécanique des Sols avait installé un stand pour la vente d'ouvra The Opening Session, to which ladies accompa. ges traitant de cette discipline. Il y avait nying Conference Members were invited, took également d'autres stands de livres. place on Monday, August 25, in Auditorium N° 1 of the Unidad de Congresos (see page 95 Toutes les expositions ont suscité un grand of this volume). Mr. Enrique Tamez, Chair­ intérêt parmi les congressistes. man of the Organizing Committee, welcomed all participants in the Conference. Then, the Conference was declared open by Mr. José Her­ 13. OUVERTURE ET CLOTURE DES SEANCES nández Terán, Minister of Hydraulic Resources, on behalf of the President of Mexico. After­ wards Dr. Laurits Bjerrum, President of the La Séance d'Ouverture, à laquelle les dames ont été invitées à assister, a eu lieu le International Society, gave his Presidential Address. Finally, Prof. Arthur Casagrande lundi 25 août, à l'auditorium N° 1 du Centre presented to Mrs. Elena Carrillo, the widow des Congrès (voir page N° 95 de ce volume). of Dr. Nabor Carrillo and to Nabor Carrillo M. Enrique Tamez, Président du Comité d'or­ Jr., the first copies of the Carrillo Volume, ganisation a souhaité la bienvenue aux parti­ published by Proyecto Texcoco on the occasion cipants après quoi, au nom du Président du Mexique, M. José Hernández Terán, Ministre of the Conference. des Ressources Hydrauliques, a déclaré 1'Ou­ verture du Congrès. Ensuite, M. Laurits The Closing Session was combined with a fare^ Bjerrum, Président de la Société Internatio­ well dinner at the Castillo de Chapultepec, nale, a prononcé son allocution. Enfin, le attended by nearly 2,000 persons. Dr. Laurits Prof. Arthur Casagrande a présenté â Mme. fi­ Bjerrum presented the new President of the lena Carrillo, Veuve de M. Nabor Carrillo et International Society, Prof. Ralph B. Peck. à Nabor Carrillo Jr., les premiers exemplai­ The Conference was declared closed by Mr. Gil. res du volume Carrillo, publié par le projet berto Valenzuela, Minister of Public Works. de Texcoco, à l'occasion du Congrès. A description of this Session is found in pages 107 to m of the present volume. Au cours de la Séance de Clôture, M. Laurits Bjerrum a présenté le nouveau Président de la Société Internationale, M. Ralph B. Peck. La 14. SOCIAL ACTIVITIES clôture des travaux a été prononcée par M. Gilberto Valenzuela, Ministre des Travaux Pu­ All Conference Members and persons accompany­ blics. Pour la description de cette séance, ing them were invited to the following acti­ vities : voir page 107 à 111 de ce volume.

Welcome buffet after the Opening Session Enfin, un dîner d ‘adieu auquel ont participé Performance of the Ballet Folklórico de Mé­ deux mille personnes, a été donné au Château xico, on the evening of Thursday, August 28 de Chapultepec. 569 Farewell dinner at the Castillo de Chapul- 14. ACTIVITES SOCIALES tepec on Friday 29 Tous les congressistes et les personnes de Visit to the Archaeological zone of San leur entourage ont été invités aux manifesta­ Juan Teotihuacin on Saturday 30. tions suivantes:

In addition, a Ladies' program was carried Buffet d'accueil après la Séance d'ouverture out (see page 40 of this volume) which was attended by nearly all ladies accompanying Le jeudi 28 août, en soirée, représentation Conference Members. The success of this du Ballet Folklorique de Mexico program was possible thanks to the gracious Le vendredi 29 août, Dîner d'adieu au Châ­ cooperation of a large number of Mexican teau de Chapultepec ladies. Le samedi 30, visite de la zone archéolo­ gique de San Juan Teotihuacán. 15. TOURS OUTSIDE MEXICO CITY En outre la plupart des dames accompagnant les These tours were planned as recreational and congressistes ont participé au programme prévu cultural, since important construction pro­ à leur intention. (Voir page 40 de ce vo­ jects outside Mexico City were not at that lume) . Le succès de ce programme est â met­ time in a stage interesting from the stand­ tre au compte des nombreuses dames mexicaines point of soil mechanics. qui y ont apporté tout leur concours. In spite of the unfavorable weather conditions that unfortunately prevailed almost throughout 15. EXCURSIONS HORS DE LA VILLE DE MEXICO Mexico during the Conference and the follow­ ing week, all tours were carried out success­ Il s'agissait d'excursions organisées dans un fully, with the exception of Tour A in which but récréatif et culturel. En effet, en ce major problems arose. A report on these tours qui concerne la plupart des grands projets de is found in pages 601 to 608 of this volume. construction situés hors de la ville, l'avan­ cement des travaux ne présentait pas d'inté­ rêt particulier du point de vue de la mécani­ 16. FINANCES que des sols. En dépit du mauvais temps qui a régné pendant presque toute la durée du Con In addition to registration fees and the sale grès, toutes les excursions se sont déroulées of sets of the Proceedings, the Conference was avec succès, à l'exception toutefois du voyage financed by a grant from the Mexican Federal A qui a été annulé a cause de la pluie. Le Government, through the Ministry of Hydraulic compte-rendu de ces excursions figure dans Resources and by donations received from con­ les pages 601 à 608 de ce volume. tracting, engineering, industrial, and con­ sulting firms in Mexico. Several Government Agencies helped generously by providing person 16. FINANCEMENT nel, equipment, and other services. Mis à part les revenus tirés des droits d'ins. The complete list of patrons and donors is cription et de la vente des Comptes-Rendus, presented in page 3&11 of this volume, where le Congrès a été financé par une subvention the Organizing Committee records its thanks. du Gouvernement Mexicain, par l'intermédiaire The generosity of donors made possible to pro du Ministère des Ressources Hydrauliques et vide free transportation service from the ho­ par différentes firmes mexicaines: entreprises tels to the Unidad de Congresos, to cover the compagnies industrielles, bureaux d'études deficit created by cancellation charges for etc. Plusieurs agences gouvernementales ont Tour A and to provide services to the Execu­ prêté généreusement leur concours en fournis­ tive Committee. sant du personnel, du matériel ou d'autres ser vices.

17. SECRETARIAT La liste complète des bienfaiteurs et des do­ nateurs figure à la page 3&11 de ce volume, From the appointment of the Organizing Com­ consacrée aux remerciements. La générosité mittee in October, 1965, onwards, Mr. Luis de ces groupes a permis de mettre à la dispo­ Ramirez de Arellano served as Executive Se­ sition des congressistes un service de trans­ cretary. This was possible through the co­ port gratuit de leurs hôtels jusqu'à la Uni­ operation of the Comisión Federal de Electri­ dad de Congresos, de couvrir le déficit causé cidad and the Instituto de Ingeniería (UNAM). par l'annulation du voyage A et de fournir

590 From November, 1967, onwards, he was helped des services au Comité Directeur. full time by Hiss Alma Aguirre D., who col­ laborated with the Organizing Committee un­ til the closure of its operations. Her de­ 17. SECRETARIAT dication and enthusiasm were a tremendous help to the Committee. Other members of the M. Luis Ramlrez de Arellano a occupé le poste staff deserve to be highly commended. de Secrétaire Exécutif du Comité d'organisa­ tion dès la nomination de ce dernier. Il est On March, 1966, office space was rented to juste de mentionner ici la précieuse collabo­ ration apportée par la Commission Fédérale facilitate the work of the Committee and d'Electricité d'une part et, d'autre part, par its personnel grew to a maximum of thirty- l'institut de Génie Civil de l'UNAM. seven persons prior to the Conference. Dur­ ing the week of the Conference sixty persons A partir de novembre 1967, M. Ramlrez de Are­ were engaged. Six interpreters served from llano a été aidé dans ses fonctions par Mlle. sometime before the Conference and attended Aima Aguirre D., qui a travaillé à plein temps several briefing sessions in advance of their avec le Comité d'organisation jusqu'à la fin main task at the Main Sessions. de ses travaux. Son dévouement et son effi­ cacité on constitué une aide extrêmement pré­ cieuse pour le Comité. D'autres membres du 18. ACKNOWLEDGEMENT personnel sont dignes également de tous les éloges. The Organizing Committee wishes to record its appreciation of the help and advice received En mars 1968 le Comité a loué des bureaux pour from the following persons: Messrs. Fernando faciliter la tâche de son personnel dont les Hiriart, Gerardo Cruickshank, Salvador Agui­ effectifs comprenaient, avant la Conférence, lar Chivez and Alberto Barocio, and Dr. Ro­ trente-sept personnes. Pendant le Congrès, ger Diaz de Cossio. soixante personnes ont été engagées. Les six interprètes recrutés quelque temps avant la Conférence ont assisté à des réunions d'info£ mation afin de se préparer pour les Séances Principales.

18. REMERCIEMENTS

Le Comité d'organisation désire exprimer ici sa reconnaissance et ses remerciements aux personnes suivantes pour les précieux servi­ ces qu'elles lui ont rendus: MM. Fernando Hiriart, Gerardo Cruickshank, Salvador Agui­ lar Chàvez et Alberto Barocio, et Roger Dlaz de Cossio.

591 TABLE I Original allocation/ Papers published/ Number of discuarion*/ Country /Pays Nombre alloué Mémoires publiés Nombre de dissertation« Argentina/Argentine 2 - 2 Australia/Australie 6 6 Austria/Autriche 2 1 Belgium/Bélgique 3 2 Brasil/Brasil 4 3 Bulgaria/Bulgarie 2 2 Canada 6 7 China/Chine 2 - Colombia/Colombie 1 1 Czechoslovakia/Tchécoslovaquie 3 3 Denraark/Danemark 2 2 Ecuador/Equateur 1 - Egypt/Egypte 1 Finland/Finlande 1 1 France 10 9 Germany/A1lemagne 5 5 Ghana 1 Great Britain/Grande-Bretagne 11 11 Greece/Grèce 1 - Hong Kong 1 Hungary/Hongrie 3 2 India/lnde 5 5 Iran 1 Ireland/lrlande 2 2 Israel/israël 4 4 Italy/ltalie 3 3 Japan/Japon 6 6 Malaysia/Malaisie 1 Mexico/Mexique 4 4 Morocco/Maroc 1 1 Netherlands/Pays-Baa 4 3 New Zealand/Nouvelle-Zélande 1 1 Norway/Norvège 4 4 Peru/Pérou 1 - Poland/Pologne 3 2 Portugal 4 4 Republic of South Africa/République de l'Afrique du Sud 4 4 Rhodesia/Rhodésie 1 - Rumania/Roumanie 2 2 Spain/Espagne 3 3 Sweden/Suède 3 2 Switzerlafid/Suisse 4 4 Thailand/Thallande 1 Turkey/Turquie 2 2 U.S.S.R./U.R.S.S. 13 9 u.s .a ./e .u .a . 17 17 Venezuela/Vénézuéla 1 - Yugoalavia/Yougoslavie 3 3

Total 160 146 39

592 TABLE II Country/Pays Attending/ Ladies/ Total Présent Delcguées Algeria/Algérie 4 3 7 Angola 2 - 2 Argentina/Argentine 22 11 33 Australia/Australie 15 5 20 Austria/Autriche 6 - 6 Belgium/Belgique 14 7 21 Brasil/Brésil 17 8 25 Bulgaria/Bulgarie 1 - 1 Canada 105 56 161 Ceylon/Ceylan 1 - 1 Chile/Chili 11 4 15 Colombia/Colombie 11 4 15 Costa Rica 3 - 3 Czechoslovakia/Tchécoslovaquie 1 - 1 Derunark/ Danemark 7 3 10 Ecuador/Equateur 7 5 12 El Salvador 2 1 3 Finland/Finlande 4 2 6 France 52 21 73 Germany/Allemagne 37 12 49 Ghana 4 - 4 Great Britain/Grande Bretagne 58 19 77 Greece/Grèce 3 3 6 Guatemala/Guaténiala 1 - 1 Honduras 1 1 2 Hong Kong/Hong-Kong 4 2 6 Hungary/Hongrie 1 - 1 India/lnde 6 1 7 Iran 3 1 4 Ireland/lrelande 4 - 4 Israel/lsraël 12 5 17 Italy/ltalie 27 16 43 Japan/Japon 34 2 36 Malaysia/Malaisie 1 - 1 Mexico/Mexique 407 96 503 Morocco/Maroc 6 - 6 Netherlands/Pays-Bas 14 3 17 New Zealand/Nouvelle-Zélande 4 4 8 Norway/Norvège 15 5 20 Panama 1 - 1 Peru/Pérou 10 2 12 Philippines 2 - 2 Portugal 4 2 6 Republic of South Africa/République de l'Afrique du Sud 15 8 23 Rumania/Roumanie 2 1 3 Spain/Espagne 15 11 26 Sweden/Suède 22 11 33 Switzerland/Suisse 21 8 29 Thailand/Thallande 4 2 6 Turkey/Turquie 3 - 3 U.S.S.R./U.R.S.S. 6 - 6 U.S.A./E.U.A. 322 178 500 Venezuela/Vénézuéla 39 10 49 Yugoslavia/Yougoslavie 4 - 4

Total 1397 533 1930

593 REPORT FROM THE TECHNICAL VISITS SUB-COMMITTEE

RAPPORT DU SOUS—COMITE DES VISITES TECHNIQUES

The technical visits included four different Quatre visites techniques ont permis aux cori aspects of Soil Mechanics in Mexico City: gressistes d'apprécier divers aspects des problèmes de mécanique des sols à Mexico: 1 . Underground Railway (M etro) . 1. Visite du Métro 2. Clay Tunnels of the Valley of Mexico. 2. Visite de tunnels creusés dans l'argile de la Vallée de Mexico 3. Trip around the city to observe the sinking 3. Visite de la ville pour observer of the Valley of M exico. les effets de l'affaissement de la Vallée de Mexico 4. Soil Mechanics Section of the Institute of 4. Visite de la section de Mécanique Engineering. des sols de l'institut du Génie Civil. These visits took place daily during the Conference for people who were interested in Pendant le Congrès, ces visites ont été orga^ more than one, or wanted to attend the most nisées tous les jours afin d'offrir aux con­ interesting ones for them. gressistes la possibilité de participer à plusieurs d'entre elles. The number of attendants to the Technical Le nombre total des participants s'est elevé Visits was 1414 persons. à 1414.

DESCRIPTION OF VISITS COMPTE RENDU DES VISITES

1 . Underground Railway of Mexico City (M etro). 1. Le Métro.

The Hidalgo and M orelos stations were Les congressistes on pu visiter les stations visited, where they had the opportunity of Hidalgo et Morelos et observer une des deux observing the construction of cast in — situ méthodes de construction utilisées pour cet walls, as a part of the construction methods ouvrage: celle des parois moulées. used in the job which employed two different methods: Cette’méthode, la plus utilisée, consis­ te à excaver des tranchées étroites et peu The first method, most used, starts profondes des deux côtés du futur caisson, with the excavation of small shallow trenches à les revêtir de béton peu armé et de faible either side of the future retaining w all. épaisseur a fin de faciliter l'étape suivan­ These trenches are faced with slightly te au cours de laquelle les tranchées son reinforced concrete of a reduced thickness creusées jusqu'à leur profondeur définitive, to serve as rims for the next stage, in les parois étant stabilisées au moyen de boue which the excavation is prolonged to its total de bentonite. depth, stabilizing it by means of bentonitic muds (clay) . Après la mise en place des armatures dans la tranchée, on coule le béton sous la boue de After placing the built - up frame inside the bentonite on obtient ainsi des pans de murs bentonitic mud the pouring of concrete is latéraux limités par les joints de construc­ begun by means of a trem ie. The retaining tion. On procède ensuite à l'excavation du wall of the caisson of the subway is poured noyau par des méthodes conventionnelles, les in limited panels using joints of special parois étant maintenues par des étrésilions.

595 construction. When the pouring of the On coule ensuite le radier, les parements retaining wall has been finished, the excavation des murs du caisson et la dalle supérieure of the nucleus, by conventional methods, is que l'on recouvre d'un remblai destiné aux begun, shoring it by means of conveniently services municipaux, et d'un nouveau revete- spaced braces. When the excavation has been ment. finished the floor si sib of the caisson and the covering slab are poured, the caisson is La seconde méthodes n'est utilisée que roofed over and the fill is placed and dans des cas exceptionnels, notamment lors­ municipal services, crowning it with new que les travaux ont lieu au croisement de paving. deux avenues importantes, nécessitant ainsi leur prompte réalisation pour une reprise r£ The second method is used in exceptional pide du trafic. Elle consiste à coulér les cases, such as those of crossings with murs comme dans la méthode précédent, puis important avehues and which require a la dalle supérieure du caisson recouverte minimum tim e, it consists in initially également d'un remblai et d'un revêtement. pouring the walls as In the first method and L'excavation du noyau se fait ensuit par un after having poured the slab of the covering tunnel. of the caisson, which is filled and finished in the way described in the preceding method, 350 congressistes on fait cette visite pour the excavation is made by means of tunneling. laquelle dix autobus on été nécessaires. Des bulletins d'informations ont été distribués 360 persons attended this visit, transportation et des guides se sont efforcés de répondre was given by ten buses; visitors received dans le détail aux questions posées. detailed Information about all questions which came up from the guide's explanation, besides, 2. Tunnels creusés dans l'argile de la Vallée they were given explicative technical booklets. de Mexico.

2. Tunnels through the clay of the Valley of Afin de faire connaître aux congressistes les M exico. techniques mexicaines de cresusement de tunn el dans l'argile, quatre visites ont été or­ In order to Include the technical advance of ganisées à des puits d'accès se prêtant par­ the country on tunnels through clay four ticulièrement à l'appréciation de l'avance­ shafts were especially selected for the easy ment des travaux et des systèmes de construç. exposition of the advances and construction tioni methods they show: a)au puits d'accès 0 de 1'Emetteur Cen­ a) Shaft O of the Central Emitter. tral b) Shaft No. 10 of the Eastern Interceptor. b)au puits d'accès lo de 1'Intercepteur c) Shaft No. 11 of the Central Interceptor. Est d) Shaft No. 7 of the Central Emitter. c)au puits d'accès 11 de 1'Intercepteur Central a) Shaft O of the Central Emitter is located d)au puits d'accès 7 de 1'Emetteur Cen­ at its junction with the deep Interceptor, near tral. Tenayuca, Northwest of the City. a) Le puits d'accès 0 de l'Bnetteur Central Visitors descended through a shaft which has se trouve près de Tenayuca, au Nord-Ouest a diameter of 10 meters and walked through de Mexico, au croisement de deux interp- the tunnel, approximately 9 meters in diameter teurs profonds. bored through compact materials. Les congressistes sont descendus par un puits d'accès de dix mètres de diamètre In this zone of the Valley, sandy silts and et on fait un court parcours dans le tunn cemented sandy silts exist, for which reason el de huit mètres de diamètre situé dans the use of tunneling shields has not been des terrains compacts. Etant donné que required, on this front of work the method of dans cette zone se rencontrent des limons nozzled concrete has been used to constitute sableux et des sables limoneux grésifiés, the primary facing of the tunnel. Visitors had il n'a pas été nécessaire d'utiliser les the opportunity to observe this work. boucliers d'excavation pour le creusement du tunnel. Le revêtement primaire de ce- b) Shaft No. 10 of the Eastern Interceptor lui-ci est réalisé en béton jeté dont la is located on the Southern margin of the Los mise en place a pu être observée durant Remedios River, to the north of the City, la visite constructed on clay m aterial. Visitors had the chance to see the equipment of excavation b) Dans le puits d'accès 10 de 1'intercep­ (shield) on the surface which soon was to be teur Est, situé au bord de la rivière

596 lowered Into the interior of the subsoil to "Los Remedlos* au nord de Mexico, et creu begin the deep tunnel. sé dans un terrain argileux, le bouclier d'excavation - qui devait plus tard être c) Shaft N o. 11 of the Central Interceptor is descendu pour le commencement des travaux located on the Avenue of the 100 M eters, to du tunnel a été observé en surface the North of the City, constructed in semicompact materials requiring the use of c) Pour les puits d'accès 11 de l'Intercep- drilling shield. teur Central, également au nord de Mexico, sur l'avenue de Los Cien Métros, et situé Visitors descended to a depth of 37 meters dans des terrains semi-compacts, il a été and the drilling shield could be seen working. néceBsesaire d'utiliser un bouclier d'ex­ It is a closed front shield, with a core wall cavation. Les congressistes sont descen­ which has a balancing cutter that goes dus k 37 mètres de profondeur et ont pu forwards or backwards independently of the observer ce bouclier au travail, lequel forward movement of the shield. To stabilize est fermé a l'avant par une cloison é- the front of the tunnel, the space between the tanche, dotée d'un système de coupe bas­ bulkhead and the said front is full of mud, or culant qui avance ou recule indépenda - water, under pressure. minent de la progression du bouclier. Pour stabiliser le front du tunnel, on remplit The primary shoring of the tunnel consists l'espace entre ce dernier et la cloison of rings formed by pre-cast concrete vousseirs étanche de boue ou d'eau sous pression. and screwed together, another ring of concrete Le revêtement primaire du tunnel est for­ poured on site, constitutes the definite coating. mé par des anneaux de voussoirs en béton The excavated material is eliminated by préfabriqué vissés entre eux; le revête­ mixing it with water at high turbulence, to ment définitif est constitué par un autre form a suspension that can be pumped, and anneau de béton coulé sur place. is sent to the outside. Les déblais sont mélangés avec de 11 eau à haute turbulence afin de former une d) Shaft No. 7 of the Central Emitter is boue qui puisse être pompée vers l'exté­ located downtown. Constructed by the rieur "flotation" method in the clay of the Valley of M exico, by a shield of 4.00 meters in d) Le puits d'accès 7 de 1'Emetteur Central, diameter at a depth of 15 meters with a au centre de la ville, a été construit honeycombed front and, protected by a par la méthode de "flottaison" dans l'ar­ security bulkhead; the disposal of the material gile de la vallée de Mexico, à 15 mètres . left behind has been made by liquification and de profondeur, à l'aide d'un bouclier de sending it to the outside by means of tubing. quatre mètres de diamètre dont l'avant est équipé d'une grille coupante et d'une 293 people attended to the visit .transportation cloison de Sécurité. Les déblais sont was given by 11 buses, they received a liquéfies et pompés vers l'extérieur. detailed information of the methods used, Les congressistes ont pu parcourir le besides explicative technical booklets. tronpon terminé; 293 d'entre eux ont fait cette visite pour laquelle 11 autobus ont 3. Trip around the City to observe the été nécessaires; ils ont repu des bulle­ subsiding of the Valley of M exico. tins techniques explicatif et des infor­ The visit Included that part of the City which mations détaillées sur la méthode utilisée has its foundations on the fill over the ancient lake and some characteristic buildings, such as: 3. Visite de la ville pour observer les a) The School of the Vizcaínas and the effets de l'affaissement de la Vallée de construction situated on San Jeronimo St. at Mexico. the com er with Correo Mayor, which has two Un parcours a été effectué à Mexico dans levels and has suffered through the passing of la partie édifiée sur le fond de l'ancien time important differential settlements due to lac, et les constructions caractéristi­ local consolidations of the original soil. ques suivantes ont été visitées:

b) Palace of Fine Arts and Palace of Mining where one can see great total and differential a) Le Collège des “Vizcainas" et le bâti­ settlings, due to the consolidation of the clay ment de la rue "San Jerónimo" faisant of the Valley of Mexico. The Palace of Fine le coin avec la poste centrale, bâti­ Arts, (1904-1943) with an area of approximately ments de deux étages qui avec le temps 9,700 sq. m t., weighs 116,000 tons and ont subi des tassements différentiels imposes on the soil an overload of 12 tons/sq. importants dus à la préconsolidation mt. There existed, previously, a convent with locale du terrain

597 a church which had its foundations on piles. b) Le "Palacio de Bellas Artes" et de "Mi N evertheless, the builders decided to use a nerla" où l'on observe de grands tasse massive concrete slab, whose thickness varies ments absolus et différentiels, résul­ from 1.8 to 3.0 meters and whose weight is tant de la consolidation de l'argile 46.000 tons. There was a settlement at the de la Vallée de Mexico. Le "Palacio de center of 4 cm. in 1907. The settling had a las Bellas Artes" (1904-1943) dont la velocity of 4 cm. per month, which afterwards superficie est d'environ 9 700 m2, Increased to 4.3 cm. per month. Then, it pèse 116,000 tonnes ce qui impose au was isolated by sheet piling, and grout and terrain une surcharge de 12 tonnes/m2. sand were injected, (70,000 sacks of cement) Bien .que la construction précédente, reducing the settling to 1.1 cm. per month. un couvent, ait été fondée sur pieux, Todate the total sinking is close to 3.5 meters. on décida d'utiliser un radier en bé­ Due to the general settlement of the Valley, ton dont l'épaisseur variait entre and that the soil under it s foundation is 1 m. 80 et 3 m. et posant 46 000 tonnes strongly consolidated, its relative movement is et qui produisit un enforcement de 4 in ascendence with respect to the floor of the cm durant les premieres étapes de cons­ Central Park (Alameda). truction. En 1907 le tassement était de 4 cm. par mois, puis lorsqu'il c) Guardiola Building, Monument to the atteint 4,3 cm par mois, on décida Revolution and Monument to Independence, in d'entourer la construction d'un rideau which the foundations are on basis of piles de palplanches et on injecta du mor­ that pierce the compressible clays and rest on tier et du sable (70,000 sacs de ci­ compact layers, which, originated the ment) réduisant ainsi le tassement à emergence of these buildings up to 4.00 1,1 cm par mois. Actuellement celui-ci m eters. est au total de près de 3,50 m et en raison du tassement général de la Va­ Monument to the Revolution (1906-1936). llée et du fait que son terrain de fon. Originally, the Legislative Palace was to have dation est fortement consolidé, son been constructed on this site, the construction mouvement est ascendant par rapport au of the foundation for the complex of buildings niveau du parc voisin l'"Alameda Cen­ was begun, of which the central one had tral" foundations on wood piles driven to the compact layer, and the wings were placed on c) L'Edifice "Guardiola", les Monuments mat foundations, but important differential à la Révolution et à 1'Indépendence. movements developed that even came to the Ces constructions, étant donné l'affais. point of making the joining, between the ement général de la Vallée et se trou­ beams and the columns of the wings and the vant fondées sur des pieux traversant building on piles, difficult; it was decided to des argiles compressibles reposant sur dismantle the wings and take advantage of des couches compactes, émergent par domed central part for the construction of the endroit de quatre mitres. Monument. Some shoring pipes can be seen A l'emplacement du monument à la Révo­ in its proximidity that show in an objective lution (1906-1936), on pensait cons­ manner the settlement of the Valley o México truire le Palais Législatif en Fondant which is about 7 meters. la partie centrale sur pieux et les Monument to Independence (191(3), the original édifices périphériques superficielle­ foundation by mat failed during the ment. Mais des problèmes de mouvements construction. The foundation stab has a différentiels entre la partie sur pieux thickness of 1 meter and is 18 meters in et les édifices du peurtour conduisi­ length. The new foundation has 465 wood piles rent à la démolition de ces derniers. with a length of 23 meters that only reach the La partie centrale fut utilisée pour first structures of the clay formation on this la construction du monument. site, and a metalic sheet pile was thrust in Certains tubes de sondage qui émergent the periphery of the foundation; supporting the de plus de 7 m permettent d'observer 8550 ton that the monument weighs the directement les tassements de la Va­ surrounding land has sunk 6.0 meters up-to llée de Mexico. date, the foundation has jutted out 1.80 meters. Le monument à l'indépendance (1910) Latinomerican Tower, whose total weight is avait à l'origine une fondation super­ 24.000 tons, occupies a total area of 1,300 ficielle (dalle de fondation de 18 m square meters and is built on highly de diamètre et d'un mètre d'épaisseur) compressible clay, for which reason it was qui se rompit pendant la construction; necessary to design a foundation compensated on refit les fondations avec 465 pieux with piles resting on a layer of semi-compact de bois de 23 m de long qui n'atteig­ sand, which is at a depth of 33 meters. 361 nent que les premières couches résis- 598 piles were used and each has a diameter of tantes de la formation argileuse. Un 35 cm. "Button point" type piles were used, rideau de palplanches métallique a poured in site. The excavation needed for two été mis en place autour des fondations basements and the estructure of the le terrain qui entoure le monument de foundation was carried to a depth of 13.50 8,550 tonnes s'est affaissé à cette meters making it necessary to drive date de 6 cm., la fondation étant W akefield type sheet - piling to a depth of 16 ressortie de 1 m. 80 par rapport à la meters in the perimeter of the lot. As the surface. excavations progressed shores were placed from one side to the other, to receive the d) La Tour Latino-Américaine. Celle-ci exterior thrust against the sheet piling. dont le poids total est de 24,000 tonnes et la surface 1 300 m2, se The hydraulic system designed to keep back trouve sur une argile hautement com­ the water consisted of four pumping wells pressible. La solution adoptée est une with a depth of 35 meters and 0 absortion fondation compensée avec 361 pieux de wells (outside the sheet piling), joined by a 35 cm de diamètre du type "Pointe de perimetral drain to conserve the external bouton", coulés sur place, reposant hydraulic pressures. The total weight of the sur une couche de sable semi-compact whole construction is supported by the piles. située à 33 m de profondeur et une ex­ N evertheless,, since the caisson of the cavation de 13,50 m de profondeur foundation is totally hermetic, a pressure of (deux sous-sols) entourée d’un batar­ water equal to 13 ton/sq. mt. acts on the deaux de bois du type Wakefield de 16 foundation slab, which is controlled by means m de long sur tout le périmètre main­ of 7 valves. It correspons to approximately tenu par des étresillons transversaux 40% of the weight of the building, with a total qui reçoivent les pussées extérieures height of 181 meters distributed in 43 floors. sur le batardeau. Le système hydrauli. The seismic coefficient considered was 5% in que déstine à rabattre la nappe com­ the base and to increase the rigidity in the prend 4 puits de pompage construits structure and decrease deformations during jusqu'à 35 m de profondeur et 8 puits earthquakes, the resisting strength of the d'absorption (hors du batardeau) re­ slabs of concrete and the beams of the liés par un drain périphérique qui structure were combined. conserve les pressions hydrauliques extérieures. Le poids total de l'ensem Shrine of Our Lady of Guadaupe located in ble du bâtiment est supporté par les La Villa, the foundations were made by pieux, cependant, comme le caisson de footings on the eage of the ancient lake, fondation est totalement hermétique, which gave as a result different thickness of il s'exerce sur la dalle de fondation compressible material under the foundation une pression d'eau égale à 10 tonnes/ and, therefore, differential settlements, m2, contrôlée par 7 valves, qui re­ which have reached as much as 2.40 meters présente 40% de poids de l'édifice between one point and other of the building. dont la hauteur totale est de 181 m There is a fault under the Shrine that répartis en 43 étages. On a pris en crosses it transversally about 40 meters to compte un coéfficient sismique de 5% the South of the extreme North of the à la base, et pour augmenter la rigi­ building. This fault practically cuts the church, dité de la structure, et réduire les one part leaning towards the North and the déformations lors des tremblements de other toward the South, opening a crack from terre, on a placé des armatures d'eff­ the top down. The thickness of the clay in the ort tranchant entre les dalles et les North, is from about 5.00 meters to 14.00 poutres de la structure. meters, and in the South, it is about 50 meters, which causes very important e) La Basilique de la "Villa de Guadalu- deformations of the church structure. The pe". longitudinal fault causes the shrine to slump Celle-ci est fondée en surface sur les considerably towards the East, thus separating contreforts de l'ancien lac, ce qui itself from the Basilica in its upper part. entraîne des différences d'épaisseur du matériel compressible et par suite 608 people attended this visit, certainly one of des affaissements différentiels de the most interesting, 16 buses were used to l'ordre de 2 m 40 entre un point et move them, they received all the informative un autre du terrain. Sous le Sanc­ technical help they needed tuaire, se trouve un dôme rocheux qui 4. Soil Mechanics Section of the Institue of le croise transversalement, à environ Engineering. 40 m au sud de l'extrémité nord de l'édifice, et partage practiquement The fourth and last visit corresponded to l'église en deux; une partie s'incli- 599 laboratories of the Soil Mechanics Section of ne donc vers le nord et 1'autre vers the Institute of Engineering: le sud; une fissure s'est ouverte de haut en bas. Soil Mechanics Laboratory Au nord l'épaisseur d'argile varie en­ Rockfills Laboratory- tre 5 m. et 14 m, et au sud elle est de 50 m ce qui produit d'importantes An explanation was given about the type of déformations de l'église. Le d6me ro- investigation that is being carried out in them cheaux longitudinal provoque un affai­ illustrating it with booklets for the visitors. ssement considérable du "Sagrario" vers 163 people attended this visit. l'est, le séparant de la basilique en sa partie supérieure.

608 congressistes on fait cette visite - certainement une des plus intére­ ssantes - ; 16 autobus ont été mis à leur disposition ainsi que toutes les informations techniques qui leur étaient nécessaires.

4. Visite de la Section de Mécanique des Sols de l'institut de Génie Civil.

La quatrième et dernière visite a été celle des laboratoires de la section de Mécanique des sols de l'Institute du Génie Civil:

- Laboratoire de Mécanique des Sols - Laboratoire des Enrochements.

Des explications ont été données sur la genre de recherches effectuées; des bulle­ tins d'informations ont été par ailleurs distribués.

163 personnes on fait cette visite pour laquelle 7 autobus on été nécessaires.

600 REPORT FROM THE TOURS OUTSIDE MEXICO CITY SUB-COMMITTEE

RAPPORT DU SOUS—COMITE DES VOYAGES HORS DE MEXICO

After the Congress was over, several tours Lee excursions hors de Mexico furent les sui outside Mexico City were organized to both vantes: — cultural and resort areas. Excursion A-3, Mexico-Mérida-Chichen Itzà. Uxmal. Tour A-l.- To the City of Merida, inclu­ ding visits to the archeological zones of Excursion A-2; même itinéraire terminé par Uxraal and Chichen-ItzS. la visite de Cozumel.

Tour A-2.- As an extension of Tour A-l to Excursion B, Mexico-Oaxaca-Monte Alban- the Island of Cozumel. Mitla. Excursion C, México-Villahermosa-Palen- Tour B.- To the City of Oaxaca and visi­ que. ting the archeological zones of Monte Alban and Mitla. Excursion B-1, Mexico-Tepotzotlan-Guana- juato-GuadalaJara. Tour C.- To the City of Villahermosa, visi ting the archeological zone of Palenque. Excursion D-2, même itinéraire terminé par la visite de Puerto Vallarta. Tour D-l.- To the Cities of Guanajuato and Ces excursions ont permis aux voyageurs de Guadalajara. voir les principales zones archéologiques et certains monuments coloniaux du Mexique. Tour D-2.- To Puerto Vallarta, as an extejj sion of Tour D-l. Excursions A-1 et A-2.

The routes were planned in order to inclu­ Cette excursion dont le départ en avion é- de the most important archeological zones tait prévu pour le 31 Août à 8 heures devait durer jusqu' au 3 septembre et ee prolonger and some of the many monuments of the colo­ jusqu'au 5 pour les personnes allant à Co e u - nial epoch, which exist all over the country. mel. Worldwide known resort places as Puerto Va- llarta and Cozumel were also included. Mais pour différentes raisons et notamment état données les conditions atmosphériques, Tour A-l.- To Merida, and A-2, extension le départ de l'avion fut retardé. to Cozumel. De plue, l'avion ne put atterrir & l'aéro­ port de Mérida à cause de la brume et il dut According to the original schedule, the aller jusqu'à Cozumel où les passagers at- group would leave Mexico City on August endirent plusieurs heures que les conditions 31st, on the ordinary 6 p.m. commercial atmosphériques s'améliorent à Mérida. En flight, and while tour A-l would end by Sep­ vain, puisque le lendemain matin k 7 heures tember 3d, the extension to Cozumel would ils durent rentrer directement a Mexico. then start, to end two days later on Septem­ ber 5th. Unfortunately adverse atmospheric On fit les démarches nécessaires pour que l'excursion puisse aucir lieu et le nouveau conditions forced a 6 hour delay in the de­ départ fut fixé au 1er Septembre & 18 heures parture and, furthermore, the p i w e was sent par vol spécial; maiB la majorité des con­ to Cozumel, where it stayed for six more gressistes inscrits i ce voyage décidèrent de hours waiting for the wather condition in l'annuler. Le groupe, réduit & sept personnes,

60I Merida to improve. Finally, after such an quitta Mexico à 18 heures et arriva à Mérida exhausting and tedions experience, the group a l'heure prévue. had to go back to Mexico City at 7 a.m. of the following day. A special flight was Le mardi 2 Septembre, le groupe alla en vcù ture à Uxmal-nom qui signifie "trois foie é- chartered so that the group could leave to difiée"- une des zones archéologiques les Merida at 6 p.m. September 1st. However, plus intéressantes de la civilisation maya, most of the visitors originally registerd où l'on trouve, de grands édifices ornés dé­ had decided to cancel their registration by licatement et répartie symétriquement. then. Le groupe visita tout d'abord la pyramide This time the plane - with the group reduced du Devin -en fait, deux pyramides superposées- to seven people - took off and arrived on ti. en s'arrêtant particulièrement devant la fipa de du temple primitif magnifiquement orné par me, without any problem. The visitors spent des masques du dieu de la pluie; puis le qua­ their first night in Merida. drilatère des Nonnes qui est une très grande cour entourée de quatre bâtiments surélevés Tuesday morning, September 2nd, the group aux façades décorées avec profusion. was taken to Uxmal, name that refers the fact that the city was rebuilt three times. Il admira la construction sans doute la This is one of the most important cities plus remarquable de la ville: le Palais du Gouverneur, de dimensions grandioses, harmo­ where the Mayan culture flourished, with laj: nieusement propertionnéeB et dont la décora­ ge buildings artistically decorated and tion est du style maya le plus classique; et symmetrically distributed. vit ensuite le Temple des Tortues, appelé ainsi en raison du motif décoratif de Ba cor- The group visited the Wizard's Pyramid, nieche d'une simplicité exquise. constructed on several stages, the one at the bottom being outstanding with its facade Le groupe passa la nuit à l'hotel "Hacienda Uxmal", puis partit en voiture pour Chichen beautifully decorated with masks of the God Itzâ le jour suivant. of the Rain. The Nunes’ Quadrangle, a huge square bordered by buildings resting on pla.t Chichen Itza fut fondé au VIe siecle; son forms at different levels, with facades rich nom signifie en maya: 1 embouchure des It­ in decoration. zaes.

The most noticeable construction in the Au nord de la place principale se trouve la city is, no doubt, the Governor's Palace, pyramide appelée "El Castillo", au sommet de laquello est situé le Temple du Jaguar qui though great in dimensions, amazingly propox domine toute la ville, et dont la base en - tionate and with fine decoration in the pierre sculptée représente d'énormes têtes de highest classical Mayan style. The temple serpent - A l'intérieur du temple on peut vo­ of the Turtles is also outstanding; it is na ir la sculpture du jaguar rouge. med that way because of the motif that deco­ rates the cornise, of elegant simplicity. Les visiteurs observèrent avec grand inté­ rêt l'ensemble formé par le Jeu de Pelote, no The group stayed overnight in the Hotel tamment sa tribune sacrée et le Temple des tT gres. Hacienda Uxmal, and departed in automobiles for Chichen-ItzS the following day. Finalement, empruntant un chemin qui part de la plcace, ils arrivèrent au Puits Sacré Chichen-Itzi was founded in the VI Century aussi appelé Puits des Sacrifices pur rappeler and its Mayan name means Mouth of the Itzaes. les cérémonies religieuses qui B'y déroulaient, énorme puits naturel formé dans du calcaire. North of the main square, there stands the De Mérida où ils rentrèrent certaine voya­ pyramid called The Castle, with the Jaguar's. geurs continuèrent leur excursion jusqu'à Co- Temple at its top, and from which the whole zumel, les utres s'envolèrent pour leur pays city can be seen. Enormous serpents' heads d 'origine. carved on stone, are at the base and the Excursion B - Oaxaca. sculpture of the red jaguar is in the inte­ rior . 27 personnes firent cette excursion. Le dé part prévu pour le 31 Août à 7h 15, par vol The visitors' interest was captivated by normale Mexico-Oaxaca fut retardé de 4 heures the Ball's Game complex, the Court, the Sa­ en raison de mauvaises conditions atmosphéri­ cred Tribune and Temple of the jaguar. ques. Ce retard faisant perdre une demie-jour née d'activité, l'itinéraire dut être modifié. En arrivant à Oaxaca le groupe fut installé à The visit to Chichen-Itza inded with a vi­ l'hStel Victoria où il fut servi un repas de sit to the Cenote Sagrado or well of the Sa­ spécialités mexicaines; après le repas, le crifices, a natural depression in the limes­ groupe alla, en voiture, aux ruines de Monte tone that forms the peninsula, fed by filtra Alban, en compagnie d'un guide.

602 tions and which was once the scene of reli­ L La grande cité de Monte-Alban est le berceau gions ceremonies. de la civilisation zapotèque. On y a décou­ vert des monuments d'un grand intérêt archéé— The group returned to Merida, sume people logique ainsi que de nombreauses tombes, on particulier la tombe No. 7, où l'on a retrouvé bordered flights to their home countries and des bijoux d'or, ornée de jade et finement se those registered for tour A-2 left for Cozu­ ulptés. ~ mel . Le site s'étend sur 40 Km^. à 2.000 mètres Tour B.- To Oaxaca. au-dessus du nivéau de la mer; cependant, seule une partie a été explorée. Twenty-seven persons registered for this Parmi les zones explorées, le groupe vi9ita tour. The original departure was scheduled le centre cérémonial de Honte Alban essentiel for 7.15 a.m., August 31st, in the commer­ lement composé d'une vaste esplanade appelée cial flight to the city of Oaxaca. The ad­ "Plaza Central" entourée de nombreuses cons­ verse weather conditions forced a 4 hour de­ tructions et plates-formes. lay for the departure. Les visiteurs se rendierent tout d'abord Upon arrival to Oaxaca, the group went to sur l'énorme plate-forme située au nord de la place centrale en empruntant un escalier amé­ the Hotel Victoria, where a Mexican lunch nagé entre deux^rampes au haut auquel se trou was served. ve un portique a deux rangées de six colonnes. De là, ils purent dominer la "Plaza Central" Some adjustments had to be made to the pro et en apprécier les proportions. Ils descen­ gram due to the mentioned delay but they dirent ensuite par le coté ouest de la plate­ meant minor losses. forme et allèrent admirer la pyramide princi­ pale, en passant devant le groupe de construc The first day, after lunch, the group went tions désigné sous le nom de "Système IV". ~ by car to visit the ruins of Monte Alban, Un peu plus au sud( se trouve le monument accompanied by a guide. dit des "Danseurs" ou l'on peut voir des dal­ les sculptées représentant des personnages de Monte Alban is an enormous city, the type olmeque que l'on a dé signé sous le nom craddle of the Zapotec civilization, where de danseurs en raison des leurs attitudes monuments of great archeological interest tres variées sur la plate-forme sud de l'é­ have been found together with numerous gra­ difice se trouvent trois glèles de pierre. ves, in some of which, particularly in grave Au nord-est de la "Plaza Central", entre le No. 7, beautifully worked examples of the remblai qui l'encadre et divers bâtiments py­ goldsmiths'art inlaid in jade, have been ramidaux, se trouve le jeu de Pelote de style found. classique zapotèque.

The total area of the site is 40 square ki Le 1er Septembre, après avoir pris le petit lometers, and the city stands at some 2 000 déjeuner, le groupe partif pour Mitla, par la meters above sea level; however, only a route de Tehuantepec, sur le trajet, il s'ar­ rêta pour voir le monument de Benito Juárez small part of the site has yet been explored. et l'arbre de "Santa Haría del Tuel", un énor me tuplier de 3*000 ans toujours en vie et le Part of the explored area is known as the plus grand du monde. Après 46 Km de route, Great Square and this was the zone visited by les congressistes partis d'Oaxaca, arrivèrent the group. à Mitla. Ils visitèrent le groupe des colon­ nes dont une deB cours, dile "Patio de las Grecas" est entourée de murs ouverts sur qua­ The tour began at the platform to the tre salles. A l'intérieur, leB parois sont north, climbing a great stairway which leads recouvertes de milliers de petites piernes, to what must have been a lobby with a roof travaillées avec des instruments rudimentai­ sustained by columns. From this point the res et assemblées*avec une admirable perfec­ great square could be appreciated in all its tion pour former dee frises et des grecques. magnitude. The visitors then descended one side to pass in front of the buildings deno­ Au sud, dans un édifice carré à peu près identique au groupe des colonnes, se trouve minated System IV, where thesf could admire the une des deux grandes tombes cruciformes, dé­ main pyramid. corée à l'intérieur de pierres ajustées - la deuxième tombe a une sorte de toit soutenu Next to the pyramid it stands the Dancers' par une colonne monolithique appelée Colonne Building, decorated with sculptures of human de la Vie. figures in strange positions which gives ori­ Puis ils allèrent voir "El Conjunto de la gin to its name. On the southern platform of Iglesia" (l'ensemble de l'église), ainsi ap­ the building there are three stone stela. pelé car les conquérants ont construit une église sur un des édifices indigènes, avec Northeast of the main square, between one les pierres des constructions détruites.

603 of its edges and the buildings constructed Apres le repas, le groupe visita le Temple in the center there is to be found the Ball de Saint Domingue, que l'on considère comme Court, constructed in classic Zapotee style. très caractéristique de l'epoque coloniale. Sa façade est de style baroque-oaxaquéem et It was here that the visit came to its end, richement ornée; a l'intérieur, ses autels and the members of the group returned to et ses retables de grande valeur sont abon­ their hotel. damment décorés.

On the first of September, after breakfast, Enfin, il alla jusqu'à. San Bartolo Coyote­ the group left for Mitla, along the Tehuante­ pec ou il put observer la fabrication de la pec highway. Short stops were made before céramique noire typique de la région. Il ren the monument to Benito Juárez and the tree of tra a Oaxaca à 18 heureB. Le 2 Septembre, iT Santa Maria del Tule, an enormous sabino tree regagna Mexico par avion. some three thousand years old, the largest in the world of its species and still alive. Excursion C a Villahermosa. Treize congressistes participèrent à ce vo­ After a 46 kilometer journey from the City yage, et furent guidés par un représentant of Oaxaca, the group arrived at Mitla, where du Comité Organisateur. they visited the Room of the Columns. The visitors could appreciate in the main patio the extraordinary decoration of the walls Le groupe quitta Mexico le dimanche 31 août au matin par la route de Veracruz-Minatitlan- built of thousands of small stones finely Villahermosa. L'après-midi, il visita les si­ worked with rudimentary tools and perfectly tes les plus intéressants de la ville, et assembled to form exquisite frises. To the parmieux le Musée de l'Etat de Tabasco, là South, in a quadrangular building similar to de hombreuses pièces archéologiques des cul­ the room of the Columns, there stands one of tures olmeque, toltèque, et maya, ainsi que the two great cross-shaped tumbs with its de hombreuses reproductions de stèles, de interior decorated with great sculptured céramiques et de peintures murales mayas, en blocks. The roof of the second tumb is sup­ particulier celles de Bonampak on été réunies.. ported by a monolithic column known as the Column of Life. Le lundi 1er Septembre, au matin, le groupe visita, dans l'etat de Chiapas, la zone ar­ chéologique de Palenque, située à 135 Km de The last place visited is known as the Villahermosa - le centre cérémonial date de Church Group, so named because the conquerors la période maya classique, qui a atteint son built a church upon one of the indigeneous apogée au 1er siècle de notre ère. Ainsi vit- buildings. with stones coming from the alre¿ il tout d'abord le musée local puis le Grand dy torn-down buildings. On the way back to Palais dans les caves duquel se trouvent des Oaxaca, a rudimentary loom was visited which tombes et il se dirigea vers le Palais des was of great interest to some of the visi­ Inscriptions. D'autres monuments, tels que les Temples Soleil, de la Croix Feuillue, du tors. After lunch, the group was taken to Comte, et du Groupe du Nord furent également the Church of Santo Domingo, considered as admires. characteristic of the colonial period. Its facade is richly decorated in the Oaxaca ba- Avant de quitter la zone archéologique, les rroque style and its interior is outstanding participants purent nager dans un petit lac with its richly ornamented altars and altar- qui est formé dans la crevasse d'Otulum et pieces . qui est alimenté par des sources proches des ruines. Ils retourneront à Villahermosa dans The tour ended with a visit to San Bartolo l'aprés-midi. Coyotepec where potters work the black clay typical of the region. Le mardi 2 Septembre, a onze membre du groupe, quittèrent 1 'hotel à la première heu Return to the City of Mexico took place on re du matin pour visiter le Pare de la Venta September 2nd, on a regular flight, and the qui est un musée en plein air ou l'on conser visitors returned to their respective hotels. ve les énormeB têtes Olméques, Bculpteés dans des pierres d'une seule pièce que l'on a dé­ couvertes en 1954 dans la zone archéologique. Tour C.- To Villahermosa. Puis ils reprirent la route pour Mexico. Le même jour, le reste du groupe fit une impor­ Thirteen people participated in this trip, tante visite au barrage de Netzahualcóyotl, including delegates, their companions and a construit en terre et en enrochements et, lo representative of the Organizing Committee, calisé à l'embouchure Raudales de Malpaso, who was the guide. sur la^rivière Grijalva, dans l'etat de Chia pas. La, on a visité les parties les plus intéressantes du barrage tels que le déver- The departure from Mexico City was Sunday Boir, les prises d'eau, et l'usine hydro-élec morning, August 31st, on a three-stop commer trique en construction dont la capacité doit cial flight. ftre de 720 K W H. 604 The afternoon was dedicated to visit the Ce groupa est rentré à Vlllahermosa avant most interesting places of the City, such as la tombée de la nuit et est allé le lendemain the University, fountains. Monument to the visiter le Musée et le parc de la Venta. Puis Heroes of the French Invasion, and the trees 11 prit l'avion paur retourner à Mexico. where the traitors were hunged. Excursion D-1 et D-2.

In the evening the interesting Museum of 57 congressistes accompagnés d'un représen­ the State of Tabasco was visited. In this tant du Comité Organisateur, participèrent a place there are several archeological pieces, ce voyage et 12 personnes seulement allèrent originals of the Olmec, Toltec and Mayan cul JuBqu'a Puerto Vallarta. tures and several reproductions of ceramic Le voyage de Mexico à Guadalajara se fit en pieces. car, et le retour de Guadalajara ou de Puerto Vallarta a Mexico, en avion. Also, there are copies of the murals of the Mayan monuments, mainly from Bonampak. Le dimanche 31 a«fut au matin, le groupe vi­ sita le Musée Colonial du Couvent de Tepotzo- On Monday morning, September the 1st, the tlan, ayant ainsi l'occasion d'admirer entre program indicated a visit to the archeologi­ autres les retables, la niche de la Vierge et la façade de l'eglise de Saint François Xavier cal zone of Palenque, in the State of de style baroque-mexicain du XVIIe siècles. Chiapas.

Lee congreBBiBteB déjeunèrent a l'h ô te l "la The first place visited was the local mu­ Mension", puis allèrent jusqu'a Guanajuato. seum, then the Great Palace, then going down Le lundi premier Septembre ils visitèrent to the bottom to see the graves: the Inscri£ dans la ville les Eglises de la Valenciana, tions1 Palace was visited too, other monu­ de la Compagnie de Jésus et de San Diego,ain­ ments such as the Temples of the Court, of si que la "Parroquia", l'Université, le théâ­ tre Juarez,"l'Alhondiga de Granaditas", et the Adoration to the Sun, of the Foliated "El Pipila", en passant par de petiteB rues Cross, of the Count and of the North were in et par les places de Mexiamora et du Baratillo. eluded in the tour. Cette ville, une des premières fondeés par les conquérants parut aux congressistes très Before leaving the zone, the delegates had semblable a certaines villes espagnoles dont the opportunity to swim in a natural pool elle conserve encore le mAne style architec­ that is formed in the Otulum crack. tural. Ils remarquèrent aussi que cette ville fut très importante; elle connut en effet un grand développement au XIXe siecle étant le In the evening, the group went back to Vi- centre d'un empire minier; de plue, d'impor­ llahermosa, where they had a free night. On tantes batailles s'y déroulèrent au moment du Tuesday morning, September the 2nd, eleven mouvement d'indépendance du Mexique. Lee sou­ members of the group went to visit La Venta venirs de son histoire on été conservée au Musée de l'"Alhondiga de Granaditas". Le mardi 2 Septembre, le groupe partit le Park that is an open museum in which the huge martin pour Guadalajara, deuxième ville de la Olmeca heads are preserved. These heads are République Mexicaine, fondée au XVIe siecle engraved in monolithic stone blocks, they we­ par le conquérant espagnol Nufio de Guzman. re localized in 1954 within the archeological A Guadalajara, ville de tradition hospita­ zone. After this visit, part of the group lière, un groupe d'ingénieurs locaux offrit went back to Mexico City. un repas aux visiteurs, dans une ambiance me­ xicaine nocturne, avec feux d'artifices et The same day, the rest of the group visited défilé de mode. the Netzahualcdyotl Dam, an earth-rock struc­ ture located on the site named "Raudales de Le 3 Septembre, le groupe visita la Cathé­ Malpaso", on the Grijalva River in the State drale, le Palais du Gouverneur au les visi­ of Chiapas. Here they visited the spillway, teurs purent admirer les fresques de José Clément Orozco, l'"Hospicio Cabafias", lee the intakes and the hydroelectrical plant, parcs "Agua Azul" et"Alcalde", le théâtre De- still in process of installation. gollado et la maison de 1'artisanat ou se trou ve la péterie mexicaine la plus raffinée. La The sub-group went back to Villahermosa and journée se termina a l'hStel Camino Real par took the tour to the museum and La Venta Park un dîner. and then took the plane back to Mexico City. Le Jeudi 4 Septembre au matin, l'excursion se poursuivit à Chapala, à 50 Km de Guadala­ Tour D-l.- To Guadalajara, and D-2.- Exten­ jara. Chapala est le lac le plus grand du sion to Puerto Vallarta. pays, il est très connu pour son climat agréa ble et son très beau paysage. Fifty seven participants with a representa­ tive of the Organizing Committee started on De retour â la ville certaines personnes

605 tour D-l, but only twelve people went on tour quittèrent le groupe pour diverses destina­ D-2 to Puerto Vallarta. tions, les autreB prirent l'avion la nuit mê­ me pour Puerto Vallarta.La., les congressis­ The group traveled by bus from Mexico City tes restèrent leB 5 et 6 Septembre a l'hôtel "Posada Vallarta". Durant leur séjour, ils to Guadalajara, stopping at several places of ont profité des jolies plages de ce port et interest, but the trip back to Mexico City de la simplicité de ses habitants dont les was by plane. maisons s'accrochent à la montagne et descen­ dent jusqu'au bord de la mer au milieu d'une Sunday morning, August 31st, the group vis¿ végétation exubérante. Le samedi après-midi ted the Colonial museum that is located in certaines personnes regagnèrent leurs pays the Convent of Tepotzotlán, where they had the d'origine alers que les autres s'envolverent opportunity of seeing the altarpieces, the pour Mexico dans la nuit. Virgin's Chapel and the facade of San Francis. Dans la programme du Congrès était prévu le co-Javier church, which are Mexican-barroque 30 août 1969 une visite de la zone archéolo­ style, from the XVII century. gique de Teotihuacan. Cette-visite fut effe£ tuée par tous les délégués et leurs accompa£ Lunch was served at "La Mansion" Hotel and nateurs, en tout plus de 840 personnes. aftewards the trip continued to Guanajuato. TEOTIHUACAN; Teotihuacan dont le nom signifie "le lieu In Guanajuato on Monday, September the 1st, où les hommes sont devenus des dieux est, two tours were organized to go around the est situé à 39 Km de Mexico. Le départ des City. 26 cars nécessaires s'est effectué à 9 heures.

The following churches were visited: The A 10 heures la visite à pied comçienca, par­ Valenciana, the Compañía de Jesús, the San tant de la Pyramide de la lune d'ou le grand Diego and the Parish; other points of inte­ ensemble formé par la Rue des Morts et tous les monuments a pu être admiré. rest as the University, the Juárez Theatre, the "Alhondiga de Granaditas", the "Pipila" Puis prenant la.Rue des Morts, les visi- statue, the squares of Maxiomara and Barati­ teurB arrivèrent a l ’esplanade située face a llo, also a walk through some of the typical la grande Pyramide du Soleil, dont la grande narrow streets, were part of the tour. majorité des visiteurs entreprirent l'ascen­ sion.Pour visiter la Citadelle et la Pyrami­ After this tour the attendants commented de de Quetzalcoatl, un bon hombre de congres stes continua la promenade en empruntant la that there was a great similarity with some Rue des Morts, les autres regagnèrent les Spanish towns, this is due to the fact that cars. La visite se termina par la zone Com­ this city was one of the first founded by merciale et le Musée. the conquerors and it still preserves its original style. They observed that the city .à 13 heures le gorupe arriva à l'usine ther had been very important long time ago for on mo-électrique de la Vallée de Mexico située the XIX century it was a mining emporioum. a 29 Kin^de Texcoco où un déjeuner fut servi. An interesting fact is that in this city Peu après les congressistes visitèrent rapi­ very important battles were sustained during dement l'usine où ilB purent apprécier la the war of Independence, memories of which stratigraphie de la "Zone de Transition" de are kept on the Alh<5ndiga de Granditas Mu­ la Vallée de Mexico^ ;;àinsi que le dévelop­ seum . pement de l'usine ou deux unités de 150 Mw chacune sont actuellement en construction.

Tuesday morning, September the 2nd/the Excursion a Tepozotlan. group departed to Guadalajara, which is the second most important city in the Mexican Re Le dimanche 31 août une courte visite fut public and was founded by the conqueror Ñuño organisée a l'ancien couvent jésuite, aujourd' de Guzman i

The attendants stayed at the Posada valla£ ta Hotel. On the 5th and 6th of September they enjoyed the beautiful beaches, the char, ming houses set on the mountain and close to the ocean, surrounded by exhuberant vegeta­ tion .

On Saturday afternoon some people went back to their different countries and the rest of the people flew to Mexico City.

Tour To Teotihuacan.

As an appendix to the ordinary activities of the Congress a visit to the archeological zone of Teotihuacan was programmed for the delegates and their companions. Teotihuacan, "where men become Gods", is located 51 Km. North East of Mexico City. It was visited August 30th, for about 840 peo­ ple .

At 9 a.m. twenty six buses and thirty five guides who spoke English, French and Spanish departed to the archeological zone.

One hour later the visitors were climbing the Pyramid to the Moon, from which they could admire the great complex of monuments and the Deads' street.

They continued the walk along the Deads' street and visited the Quetzal-Butterfly Pa­ lace, the temple of the Mythological Animals, the Jaguar's Temple, and the huge Pyramid to the sun, which most of the visitors climbed.

A good number of delegates continued the walk by the Deads' street toward the Citadel; the rest took the buses to the Citadel and the pyramid of Quetzalciatl.

The visit ended at the commercial area and the Museum.

At 1 p.m. the group went to the Thermoelec­

607 trical Plant of the Valley of Mexico, located on kilometer 29 of the road to Texcoco, where a lunch was served. Afterwards, during the visit to the installations, the group was shown a geological profile of this zone of the Valley.

At 3 p.m. the visit was ended and they went back to Mexico City to the their hotels.

T our to Tepotzotl&n.

Sunday, August 31st, a short trip to a for­ mer Jesuit Convent, at present converted in the Viceroyalty Museum, was organized. This place is 41 Km. from the City.

Two buses with 55 people among delegates and their companions and four guides were con ducted to the convent.

The visitors admired the architecture of the Convent and San Francisco-Javier church, of barrogue style of the XVII century. They visited the cloisters, the Domestica chapel and other churches, where there are beautiful paintings and altarpices of Mexican painters from the XVIII century. In this convent one can walk through the "Algibes" and "Naranjos" Patios.

On the second floor it is located 'the Mira dor, with its beautiful architecture and view of the Valley of Mexico.

The San Francisco Javier church was visi­ ted, it belongs to the XVII century and the altarpiece of the main altar is extraordina­ ry.

Dinner was served in an annex of the mu­ seum and the group went back to Mexicci City at 3 p.m.

608 REPORT FROM THE EXHIBITION OF EQUIPMENT SUB-COMMITTEE

RAPPORT DU SOUS—COMITE DE L'EXPOSITION

In the basement of the Convention Center an Une exposition couvrant 3000 métrés carrés exhibition was installed covering an area of fut organisée au sous-sol de la Unidad de 3000 square meters. Congresos, dans les buts suivants: The Organizing Committee planned this phase 1.- Donner aux congressistes des informations of the event with three directive purposes: sur divers projets officiels liés à la méca­ nique des sols pratique ou théorique actuelle 1. To give the participants in the Conferen­ ment en cours au Mexique. ~ ce an opportunity to become acquainted with various official projects involving research 2. Inviter les sociétés fabriquant des ap­ and application of Soil Mechanics in the host pareils de mesure in situ à présenter leurs country. créations les plus récentes, afin de donner aux congressistes un aperçu -général des meil 2. To invite equipment manufacturing firms to leurs procédés et instruments actuels. di%piay their latest developments in the line of field instrumentation. Thus, by placing 3- De présenter en outre certains appareils more emphasis on this specific theme, it was ou procédés qui bien qu étrangers au thfeme believed that visitors would be better able general de l ’exposition présentent un intérêt to obtain an overall picture of the best cur­ spécial, tels que techniques de forage et de rent procedures and instruments for one par­ prise d’échantillons, essais de laboratoire ticular purpose instead of being overwhelmed et nouvelles méthodes de fondations. by an overabundance of multipurpose parapher­ nalia Les buts fixés pour cette exposition semblent avoir été atteints. La surface couverte par 3. To complement the exhibit with other li­ les projets officiels représentait 33# de la nes of equipment or services which, although surface totale, leB appareils de mesures in junior to the exhibition theme chosen, are situ #, les divers matériels et procédés nonetheless important and cannot be left out. complémentaires 31#. These include drilling, sampling and labora­ tory testing equipment and new foundation Les stands officiels ont réunis les plus im­ methods. portants organismes académiques et gouverne­ methods mentaux du Mexique: Secretaría de Recursos The exhibition attained a good balance of Hidráulicos, Secretaría de Obras Públicas, these three aims. Official exhibits covered Secretaría de Hacienda y Crédito Público, 339C of the total area, field instrument manu­ Projet Texcoco), Instituto de Ingeniería, facturing firms 36# and complementary equip­ Université Nationale du Mexique), Departa­ ment and services the remaining 31#- mento del Distrito Federal, Comisión Federal de Electricidad et Petróleos Mexicanos. Official exhibitors included the most impor­ tant government and academic organizations in Des appareils de mesures in situ on été pré­ Mexico: Secretaría de Recursos Hidráulicos, sentés par un nombre important de sociétés, Secretaría de 0bra9 Públicas, Secretaría de en particulier par Engineering Laboratory Hacienda y Crédito Público (Proyecto Texcoco). Equipment Ltd., Testlab Corporation, Clock- Instituto de Ingeniería (University of México), house Engineering and Instrument Co., Curtin Departamento del Distrito Federal, Comisión de México, S. A., Geonor A/S, Telemac, S.R.L. Federal de Electricidad and Petróleos Mexica­ Geomeasurements Inc., Soil Instruments Ltd., nos. Slope Indicator Co., Geotech (Teledyne Co. ) et Bison Instruments Inc. Field instrumentation was ably represented by a number of firms, including Engineering La­ Parmi le exposants on tronva également les boratory Equipment Ltd., Testlab Corporation sociétés suivants: Atlas Copeo Mexicana, Clockhouse Engineering and Instrument Co., S. A., Cimentaciones Mexicanas, S. A., Curtin de México, S. A., Geonor A/S, Telemac Pilcon Engineering Co., Longyear de Mdxico, S. R. L., Geomeasurementó Inc., Soil Instru­ S. A., Cía., Mexicana Aerofoto, S. A., Cimen ments Ltd., Slope Indicator Co., Geotech taciones Franki de México, S. A., Acker DriTl

609 (Teledyne Co.) and Bison Instruments Inc. Co., Inc. Máquinas y Equipos, S. A., Applied Geodata Systems Inc., Joy Manufacturing Co., Other exhibitors were Atlas Copco Mexicana, Laboratorios de la Ingeniería, A. C . , Pilo­ S. A. Pilcon Engineering Co., Longyear de tes de Control, S. A., Icos de México,S. A., México, S. A., Cía. Mexicana Aerofoto, S. A., Geosol, S. A., Geofimex, S. A., Cimentaciones Cimentaciones Franki de México, S. A., Acker y Edificaciones, S. A., et Me. Graw Hill. Drill Co. Inc. Máquinas y Equipos, S. A., Applied Geodata Systems Inc., Joy Manufactur­ La Sociedad Mexicana de Mecánica de Suelos ing Co., Laboratorios de la Ingeniería, A. C. (Société Mexicaine de Mécanique des Sols) Pilotes de Control, A. A., Cimentaciones y ouvrit également un stand pour la vente des Edificaciones, S. A., and Me. Graw Hill. comptes-rendus des congrès antérieurs et de diverses publications. The Sociedad Mexicana de Mecánica de SueloB (Mexican Society of Soil Mechanics) also had La sous-commission responsable de 1 'Exposition a stand for distribution of the proceedings fut dirigée par M. Héctor Calderón, avec la of past conferences and other publications. collaboration de MN. Lino Vite, Héctor Ancira et Armando Prieto. Le nombre de visiteurs de The Subcommittee in charge of the Exposition l'exposition est estimé k 6000 personnes. was presided by Ing. Héctor M. Calderón, with the valuable assistance of Ings. Lino Hermi­ nio Vite Saldaña, Héctor Ancira and Armando Prieto. It is estimated that over 6,000 per sons visited the stands during the Conference.

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