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Prof. B V S Viswanadham, Department of Civil Engineering, IIT Bombay Index Properties
06 Prof. B V S Viswanadham, Department of Civil Engineering, IIT Bombay Index properties Prof. B V S Viswanadham, Department of Civil Engineering, IIT Bombay Review Clay particle-water interaction Identification of clay minerals Sedimentation analysis Prof. B V S Viswanadham, Department of Civil Engineering, IIT Bombay 20 - 40 Hydrometer analysis 0.995 130 - 150 Hydrometer is a device which is used to measure the specific 1.030 gravity of liquids. 10 - 20 4.7 φ 50 60 29 -31 φ (All dimensions 50 are in mm) Prof. B V S Viswanadham, Department of Civil Engineering, IIT Bombay Hydrometer Analysis -For a soil suspension, the particles start settling down right from the start, and hence the unit weight of soil suspension varies from top to bottom. Measurement of specific gravity of a soil suspension (Hydrometer) at a known depth at a particular time provides a point on the GSD. Prof. B V S Viswanadham, Department of Civil Engineering, IIT Bombay Process of Sedimentation of Dispersed Specimen W VW w 1 V S WS VS = Ws/(Gsγw) Vw = [1 -Ws/(Gsγw)] γ γ Initial unit weight of a i = [Ws+ wVw]/1 unit volume of suspension γi = [γw + Ws(Gs-1)/(Gs)] Prof. B V S Viswanadham, Department of Civil Engineering, IIT Bombay Process of Sedimentation of Dispersed Specimen Size d of the particles which have settled from the surface z dz through depth z in time t X X d (From Stroke’s Law): 18µ z d = (Gs −1)γ w td Note: Above the level X – X, no particle of size > d will be present. -
Earthquake Ground Motions at Soft Soil Sites
Missouri University of Science and Technology Scholars' Mine International Conferences on Recent Advances 1991 - Second International Conference on in Geotechnical Earthquake Engineering and Recent Advances in Geotechnical Earthquake Soil Dynamics Engineering & Soil Dynamics 13 Mar 1991, 4:30 pm - 5:00 pm Earthquake Ground Motions at Soft Soil Sites I. M. Idriss University of California, Davis, CA Follow this and additional works at: https://scholarsmine.mst.edu/icrageesd Part of the Geotechnical Engineering Commons Recommended Citation Idriss, I. M., "Earthquake Ground Motions at Soft Soil Sites" (1991). International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics. 3. https://scholarsmine.mst.edu/icrageesd/02icrageesd/session12/3 This work is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 4.0 License. This Article - Conference proceedings is brought to you for free and open access by Scholars' Mine. It has been accepted for inclusion in International Conferences on Recent Advances in Geotechnical Earthquake Engineering and Soil Dynamics by an authorized administrator of Scholars' Mine. This work is protected by U. S. Copyright Law. Unauthorized use including reproduction for redistribution requires the permission of the copyright holder. For more information, please contact [email protected]. Proceedings: Second International Conference on Recent Advances In Geotechnical Earthquake Engineering and Soli Dynamics, March 11-15, 1991 St. Louis, Missouri, lnvHed Paper LP01 Earthquake Ground Motions at Soft Soil Sites I. M. ldriss Department of Civil Engineering, University of California, Davis, USA development of evaluation and design methods that revolutionized INTRODUCTORY REMARKS many aspects of engineering practice and thinking. One area of research that Professor H. -
Nov-Dec Geo 2014 Final Sean.Indd
32 Geotechnical 38 Sinkhole Investigation 44 KarstIC FOUNDATION 50 Karst-Related Design over Karst and Grouting VARIABILITY Sinkholes NOVEMBER // DECEMBER 2014 INSIDE: INTERNATIONAL FOUNDATIONS CONGRESS AND EQUIPMENT EXPO INTERNATIONAL CONFERENCE PREVIEW PROGRAM FOUNDATIONSIFCEE 2015 CONFERENCE PREVIEW CONGRESS & EQUIPMENT March 17-21, 2015 JW Marriott San Antonio Hill Country Resort & Spa EXPO San Antonio, Texas, U.S.A. 10/22/14 11:40 AM IFCEE_Preview_Geostrata.indd 1 Karst AND Sinkholes DETECTION, REMEDIES, AND LEGAL CONSEQUENCES Proudly published by the Geo-Institute of ASCE GEOPIER IS GROUND IMPROVEMENT.™ Work with engineers worldwide to solve your ground improvement challenges. THE GEOPIER SRT SYSTEM: LOW-IMPACT SLOPE STABILITY WE HELP YOU FIX BAD GROUND. An existing slope along the high occupancy travel lanes of the I-495 Capital Beltway in Fairfax, Virginia had an For more information call 800-371-7470, unacceptable factor of safety against sliding. The slope was e-mail [email protected] or visit geopier.com. a perfect application for the Geopier SRT system. SRT is a slope reinforcement technology that uses rigid steel Plate Pile™ elements to stabilize shallow failing slopes or reinforce marginally stable slopes. The use of small, mobile equipment allowed for the work to be performed directly on the slope with no interruption of traffic. This project demonstrated that the SRT system can successfully be installed along roadways with difficult access, while decreasing construction time and earthwork operations. ©2014 Geopier Foundation Company, Inc. The Geopier® technology and brand names are protected under U.S. patents and trademarks listed at www.geopier.com/patents and other trademark applications and patents pending. -
Awards Program April 3 • Marriott Tampa Waterside • Tampa, FL Table of Contents
Spring Convention April 3-7, 2011 Marriott Tampa Waterside & 2011Westin Harbour Island, Tampa, FL Awards Program April 3 • Marriott Tampa Waterside • Tampa, FL Table of Contents List of Awards .................................................... 2-3 Honorary Members .......................................... 4-10 50-Year Membership Citations ..................... 11-14 Fellows ................................................15-20, 42-57 Award Citations ............................................. 21-39 Chapter Awards—Citations of Excellence ....... 40 ACI University Awards ....................................... 41 Award Recipient Biographies ....................... 42-75 Index ............................................................... 76-79 1 Awards HONORARY MEMBERSHIP Zdeneˇk P. Bažant Terence C. Holland Shunsuke Otani Nicholas J. Carino Tony C. Liu Richard D. Stehly* 50-YEAR MEMBERSHIP Hiroyuki Aoyama Eugene P. Holland Kenneth H. Pukita Hansraj Ashar Jules Houde Charles H. Raths Simeon Beer Thomas T. C. Hsu John E. Sadler Ian M. Dance Merl Isaak Phil Seabrook Kurt H. Gerstle James O. Jirsa Dale M. Stevens Paul Gordon Alfred Kaufman R. Sundaram Roger Green Wataru Koyanagi Warren H. Trester Zareh B. Gregorian Thomas A. McCormick Leslie Vides William Hanuschak Carson K. C. Mok René Walther Robert Hodnett Sharad (Steve) Parikh Arnold Wilson FELLOWS Julie K. Buffenbarger Jason J. Krohn Koji Sakai Fernando J. Fernandez Victor C. Li Yixin Shao Fred Goodwin Faris A. Malhas Hitoshi Shiohara Brian H. Green Stephen S. Marchese Jongsung Sim Patrick J. Harrison Tracy Marcotte David Suchorski Mary Beth Donald M. Marks Stephen S. Szoke Deisz Hueste Robert A. Nuñez Suneel N. Vanikar Shyh-Jiann Hwang Carlos E. Ospina Cloyd E. (Joseph) Roger S. Johnston Gustavo J. Warnes Allan R. Kenney Parra-Montesinos Charles A. Weiss Jr. William M. Klorman John W. Roberts Michelle L. Wilson ARTHUR R. ANDERSON AWARD Robert Douglas Hooton ROGER H. -
ISSMGE Bulletin
ISSMGE Bulletin Volume 3, Issue 4 December 2009 International Society for Soil Mechanics and Geotechnical Engineering www.issmge.org A Message from the President I NSIDE T HIS I SSUE 90 Day Progress Report 1 A Message from the President By Jean‐Louis Briaud [email protected] 5 Views of Young Geotechnical Dear Colleagues, Engineers You elected me approximately 90 days ago and I can assure you that it was one of the major highlights of my professional 8 Reminiscences career. I appreciated the large number of congratulatory emails, letters, and phone calls that I received. I tried to answer every 11 Case History one of them but may have missed a few. I also appreciated the photos that you sent me of the conference as I was so busy that 19 TC Activity I did not have time to take any pictures or even go see the Pyramids. But our hosts, led by Mamdouh Hamza, deserve so much credit for all the work they did and the great success of 22 News the Alexandria Conference. I enjoyed myself thoroughly. 30 Announcement As soon as I was elected I started to work and this is a short report on the progress I have made over the last 90 days with Editorial Remarks 32 the help of the ISSMGE Board, the Secretary General, and many of you as well. This first effort is part of my broader vision for the Event Diary 33 next four years which you can find on my web site in a few languages (https://ceprofs.civil.tamu.edu/briaud/). -
Effects of Wingwall Configurations on Integral Abutment Bridges
ABSTRACT Title of Document: EFFECTS OF WINGWALL CONFIGURATIONS ON THE BEHAVIOR OF INTEGRAL ABUTMENT BRIDGES Andreas Paraschos, Doctor of Philosophy, 2016 Dissertation Directed By: Professor Amde M. Amde Department of Civil and Environmental Engineering This research includes parametric studies performed with the use of three-dimensional nonlinear finite element models in order to investigate the effects of cantilever wingwall configurations on the behavior of integral abutment bridges located on straight alignment and zero skew. The parametric studies include all three types of cantilever wingwalls; inline, flared, and U-shaped wingwalls. Bridges analyzed vary in length from 100 to 1200 feet. Soil-structure and soil-pile interaction are included in the analysis. Loadings include dead load in combination with temperature loads in both rising and falling temperatures. Plasticity in the integral abutment piles is investigated by means of nonlinear plasticity models. Cracking in the abutments and stresses in the reinforcing steel are investigated by means of nonlinear concrete models. The effects of wingwall configurations are assessed in terms of stresses in the integral abutment piles, cracking in the abutment walls, stresses in the reinforcing steel of abutment walls, and axial forces induced in the steel girders. The models developed are analyzed for three types of soil behind the abutments and wingwalls; dense sand, medium dense sand, and loose sand. In addition, the models consider both the case of presence and absence of predrilled holes at the top nine feet of piles. The soil around the piles below the predrilled holes consists of very stiff clay. The results indicate that for the stresses in the piles, the critical load is temperature contraction and the most critical parameter is the use of predrilled holes. -
Physical Models
ABOUT THE BOOK Bill Addis (Ed.) Physical models have been, and continue to be used by The book concludes with overviews of the current use of engineers when faced with unprecedented challenges, physical models alongside computer models, for exam- Physical Models when engineering science has been inadequate or even ple in boundary layer wind tunnels, seismic engineering, non-existent, and in any other situation when engineers hydrology, soil mechanics, and air flow in buildings. have needed to raise their confidence in a design pro- Traditionally, progress in engineering has been attribut- Their historical and current use in civil posal to a sufficient level in order to begin construction. ed to the creation and use of engineering science, the For this reason, models have mostly been used by de- understanding of materials properties and the develop- and building engineering design signers and constructors of highly innovative projects, ment of new construction methods. The book argues when previous experience has not been available. that the use of reduced-scale models has played an The book covers the history of using physical models in equally important part in the development of civil and the design and development of civil and building engi- building engineering. However, like the history of engi- the book summarizes the history of neering projects including Robert Stephenson’s Britan- neering design itself, this crucial contribution has not model testing by design and nia Bridge in the 1840s, the masonry Aswan Dam in the been widely reported or celebrated. C O N S T R U I H Y E 1890s and the Boulder Dam in the 1930s; tidal flow in The book includes 39 chapters written by 29 authors construction engineers in a single Bill Addis (Ed.) estuaries and wind and seismic loads on structures from from ten different countries. -
San Bernardino & Riverside Counties Branch Los
SAN BERNARDINO & RIVERSIDE COUNTIES BRANCH LOS ANGELES SECTION , REGION 9-SINCE 1953 PRESIDENTS MESSAGE September 2012 The 2011-2012 fiscal year of the branch is coming to an end, and I would like to take this opportunity with my last president message to thank each board member for their dedication, hard work and commitment to the San Bernardino and Riverside Counties Branch. We had an excellent year and it would not have been possible without their help. Although there have been many challenges, there have been even more wonderful memories made during my journey as president that will always hold a special place in my heart. We’ve had many successful events this past year such as lunches with great speakers, our tour to the American Asphalt Company, Engineering Week, and the golf event to name a few. I sincerely hope that all of you enjoyed these events that we prepared for you. I also want to encourage all NEWSLETTER of you to voice your opinion. Let the new Board members know which events worked the best and even share some topics or ideas that you may have for a lunch meeting. This is the time to do it, as they will be happy to incorporate any feedback that you have. With your input, I am confident that next year will be just as successful as this past year has been. Finally, I would like to say that it has been an honor and a pleasure to serve you as the 2011- 2012 branch President and I want to thank all the members for their continued support and com- mitment to the San Bernardino and Riverside counties Branch. -
Download Chapter 168KB
Memorial Tributes: Volume 5 HARRY BOLTON SEED 246 Copyright National Academy of Sciences. All rights reserved. Memorial Tributes: Volume 5 HARRY BOLTON SEED 247 Harry Bolton Seed 1922–1989 By James K. Mitchell Harry Bolton Seed was born in Bolton, England, on August 19, 1922. He studied at King's College, London University, receiving the B.Sc. in civil engineering in 1944 and the Ph.D. in structural engineering in 1947. Following two years as assistant lecturer at King's, he came to the United States to study soil mechanics at Harvard University under the tutelage of Karl Terzaghi and Arthur Casagrande. He received the S.M. from Harvard in 1948 and spent the next year as an instructor. This was followed by a year as a foundation engineer for Thomas Worcester, Incorporated, in Boston. In 1950 Professor Seed joined the civil engineering faculty at the University of California, where he spent the remainder of his career as an engineering educator, researcher in geotechnical. engineering, and consultant to numerous companies and government agencies. He built the program in geotechnical engineering at Berkeley into one of the largest and best in the world. A major factor in this development was his bringing colleagues together from different areas of geotechnical engineering, including geological engineering and rock mechanics, as well as soil mechanics and foundation engineering. He served as chairman of the Civil Engineering Department from 1965 to 1971, a period during which it rose to number one ranking in the United States for the quality of its graduate programs. Professor Seed had an enormous impact on every area of Copyright National Academy of Sciences. -
Iuinwnmiihumi
1 iuinwnmiihumi A II S A I INFLUENCIAE ALAS CONDICIONES LOCALES 'DEL SUELO ÉkN''MOVIMIENTOS DEL TERRENO ;,* EN, DAÑOSaA EDIFICIOSDURANTE SISMOS HARRY BOLTON SEED OCTAVA CONFERENCIA NABOR CARRILLO Presentada en la Sociedad Mexicana de Mecánica de Suelos en la XIII Reunión Nacional, Mazatlán, Sinaloa, México México, Noviembre 22, 1986 HARRY BOLTON SEED 1;._. : i . 13 13' 16 r Or TECA yEEpW flEOW{RDO Sa Copyright, México, 1990 SOCIEDAD MEXICANA DE MECANICA DE SUELOS, A.C. Valle de Bravo No. 19, Col. Vergel de Coyoacán 14340 México, D.F., MEXICO Los derechos de autor fueron generosamente cedidos a la SMMS por el Profesor H. Bolton Seed. Presidente del Comité Organizador: Juan Jacobo Schmitter Traducción de la versión en Español: Por personal de la Secretaría de Comunicaciones y Transportes bajo la dirección de Alfonso Rico Rodríguez. Revisión y corrección de estilo: Raúl Esquivel Díaz DibujoyMontaje:PersonaldelaSubdirecciónGeneralde Conducciones y Captaciones SARH y Everardo Fuentes de la Rosa Mecanografía: Yolanda Briseño Almaraz Edición: Juan Jacobo Schmitter y Francisco González Valencia Impreso en México. Prohibida su repoducción por cualquier medio sin previa autorización por escrito de la SMMS. Lasopinionesydatospresentadossondelaexclusiva responsabilidaddelautor.La SMMS noasume ninguna responsabilidad por las opiniones y declaraciones contenidas en esta publicación. pt b. ti r.;4. 2318 I N D I C E TRIBUTO A HARRY BOLTON SEED. Miguel P. Romo Organista VII PRESENTACION DEL CONFERENCISTA Juan J. Schmitter IX CURRICULUM VITAE DEL CONFERENCISTA XI CONFERENCIA "Influencia de las Condiciones Locales del Suelo en MovimientQs delTerreno y en Dar?os a Edificios Durante Sismos" 1 SESION DE PREGUNTAS Y RESPUESTAS 17 3 BASES DE LA CONFERENCIA NABOR CARRILLO 18 8 V TRIBUTO A HARRY BOLTON SEED por Miguel P. -
Downloaded from the Online Library of the International Society for Soil Mechanics and Geotechnical Engineering (ISSMGE)
INTERNATIONAL SOCIETY FOR SOIL MECHANICS AND GEOTECHNICAL ENGINEERING This paper was downloaded from the Online Library of the International Society for Soil Mechanics and Geotechnical Engineering (ISSMGE). The library is available here: https://www.issmge.org/publications/online-library This is an open-access database that archives thousands of papers published under the Auspices of the ISSMGE and maintained by the Innovation and Development Committee of ISSMGE. The paper was published in the proceedings of XVI Pan- American Conference on Soil Mechanics and Geotechnical Engineering (XVI PCSMGE) and was edited by Dr. Norma Patricia López Acosta, Eduardo Martínez Hernández and Alejandra L. Espinosa Santiago. The conference was held in Cancun, Mexico, on November 17-20, 2019. From Research to Applied Geotechnics 5 N.P. López-Acosta et al. (Eds.) © 2019 The authors and IOS Press. This article is published online with Open Access by IOS Press and distributed under the terms of the Creative Commons Attribution Non-Commercial License 4.0 (CC BY-NC 4.0). doi:10.3233/ASMGE190004 Geotechnical Engineering in Spatially Variable Soft Soils. The Case of Mexico City. The 9th Arthur Casagrande Lecture Ingeniería geotécnica en suelos blandos con variación espacial. El caso de la Ciudad de México. La 9.a Conferencia Arthur Casagrande by Gabriel Y. AUVINET Professor, Instituto de Ingeniería, Universidad Nacional Autónoma de México, Mexico City, Mexico [email protected] prepared for XVI Pan-American Conference on Soil Mechanics and Geotechnical Engineering Cancún, Mexico November, 2019 6 G.Y. Auvinet / Geotechnical Engineering in Spatially Variable Soft Soils The 9th Arthur Casagrande Lecture Gabriel Y. -
Hardy Cross by Richard G
Hardy Cross A Man Ahead of His Time By Richard G. Weingardt Professor Cross, the first American Moment-Distribution or Hardy awarded the highly coveted Gold Medal Cross Method–first introduced of the British Institution of Structural in 1930, made use of converging Engineers, was a far-seeing innovator approximations to rapidly distri- and structural engineering superstar bute fixed-end moments. (A basic who always thought outside the box. and simple example of the Method He received the celebrated British award is illustrated in Figure 1.) when was 73 years old, during the Essentially, what Cross’s methods Institute’s 50th anniversary celebrations did was simplify the monumental in 1958. During the Gold Medal mathematical task of calculating ceremonies, at the group’s convention innumerable equations to solve in Manchester, England, Cross delivered complex problems in the fields of a stirring keynote address exalting the structural and civil engineering, merits of engineering in forwarding long before the computer age. It societal progress. revolutionized how the profession © During the latter half of his Copyrightcareer, addressed complicated problems; Hardy often stated, “People [mistakenly] whenever engineers in the latter take for granted that an engineer is part of the 20th century talked by definition a technocrat, somebody about methods for designing stumbling across campus with a pen- difficult structures, the name of protector in his front pocket and a satchel Hardy Cross was always invoked full of calculations.” The classically with awe. educated Cross, however, was far from According to Old Dominion fitting that mold or any other. He was University Professor Zia Razzaq, one of a kind–a philosopher as well as “In Hardy Cross’s day, if you wanted Hardy Cross (William J.