FINAL REPORT REPUBLIC OF BOTSWANA MINISTRY OF WORKS AND COMWUNICATIONS BOTSWANA - ZAMBIA ROAD PROJECT AID LOAN NO. 69o-T001 NATA - KAZUNGU-A I(OAD "PANDAMATENGA ACCESS ROAD CHOBE RIVER BY - PASS ROAD JULY 1978 Iq TA S TIPPET-m-S-ABBETT-MCCARFHY -STRATTON ENGINIEERSAND ARCHITECTS NEW YO:RK GABORONE FINAL REPORT REPUBLIC OF BOTSWANA MINISTRY OF WORKS AND COMMUNICATIONS BOTSWANA -ZAMBIA ROAD PROJECT AID LOAN NO. 690-H-001 NATA - KAZUNGULA ROAD PANDAMATENGA ACCESS ROAD CHOBE RIVER BY - PASS ROAD JULY 1978 TAMS TIPPETTS-ABB ETT-McCARTHY-STRATTON ENGINEERS AND ARCHITECTS NEW YORK GABORONE TABLEOF CONTENTS PAGE I. INTRODUCTION I A. DESCRIPTION OF PROJECT 1 B. FUNDING 2 C. CONTRACTUAL ARRANGEMENTS 2 D. MODIFICATIONS OF CONTRACT 2 II. STAFFING 4 III. TRAINING 4 IV. CONSTRUCTION EQUIPMENT 4 V. MATERIALS UTILIZED 5 A. SOILS 5 B. WATER 5 VI. PROTECT HISTORY 5 A. GENERAL 5 B. SEQUENCE OF EVENTS 6 C. PROJECT SCHEDULING AND DELAYS 9 D. REMEDIAL ACTION 11 E. PICTORIAL HISTORY 11 VII. FINANCIAL SUMMARY 12 APPENDICES A. CONSTRUCTION EQUIPMENT B. SOILS AND MATERIALS C. WATER WELL LOCATIONS D. SYNOPSIS OF KEY CORRESPONDENCE E. PROJECT PHOTOGRAPHS LIST OF FIGURES FIG. 1 ........................ LOCATION MAP FIG. 2 ........................ CONSTRUCTION PROGRESS CHART FIG; B-i THRU B-4 ............. MATERIALS UTILIZATION DIAGRAMS FIG. B-5 THRU B-13 ............ AVERAGE GRADATION CURVES UNITED STATES GOVERNMENT INSTRUCTIONS use routing symbols whenever possible. 2- a emo SENDER: Use brief, informal language. Conserve space. Subject Final Report Botswana -,Zambia Road Project Forward original and one copy. RECEIVER: Reply below the message, keep one copy, return one copy. DATE OF MESSAGE Routing Symbol TO fiS/ENGR kl7 4 C&RSC. No. 8, Rm -507 SA-11I AID, Washington D.C. 20523a = TUeid TITLE OF-ORIGINATO~R"-D0/ Chief Engineer, Hl)S0/ -FOLD- -FOLD-- INITIAL MESSAGE Enclosed please find 8 copies of the Final Report on Botswana - Zambia Road Project. REPLY MESSAGE DATE OF REPLY Routing Symbol 10/18/78 DS/ENGR From fDanald W. Reilly SIGNATURE OF REPLIER USA=h to Kenya Stearns P.O. Box 30261, Palmer Nairobi, Kenya TITLE OF REPLIER Civil Engineer OPTIONAL FORM 27 5027-104 1. TO BE RETAINED BY ADDRESSEE JULY 1973 GSA FPMR (41 CFR) 101-11.6 3m' ZAMBIA ANGOLA GULN I -. KASANEI IGO.I THE PROJECT APANIDAMATENGA R ES8A BOSA AZAMIATR SERULI SELIBI " B 0 T S A N A PO AIG R 1ATINS LEPXEPE DRIFT TSHANER EP. 0O F MOLEPOLOLE " W • PLOBATSE : l--; AMATuLASA,. LEGEND TSMABON PROJECT ROAD , • MAIN ROADS -MAIN FEEDER ROADS, SECONDARY ROADS -= BOTSWANA -ZAMBIA ROAD --, LOCATION MAP , FIGURE 1 I. INTRODUCTION This is the final report on the construction of the Botswana-Zambia Highway Project accomplished between April 25, 1976 and January 19, 1977. The report has been prepared in accordance with "Guidelines for Preparing Final Report" dated September 30, 1963, as issued by United States Agency for International Development. A. DESCRIPTION OF PROJECT The Project consists of three sections of all-weather two-lane high­ way with a total length of 370 kilometers, including: 1) The Nata-Kazungula section, approximately 300 kilometers in length, beginning at Nata (See Figure 1) on the Francistown Nata road and extending north west to the existing ferry cross ­ ing to Zambia on the Zambezi River at Kazungula. 2) The Chobe River By-Pass section, approximately 65 kilometers in length, beginning near Kazungula at Kilometer 297.3 on the Nata-Kazungula highway and extending south west, skirting the town of Kasane, through the Chobe National Park to the bridge across the Chobe River at Ngoma. 3) The Pandamatena Access Road 5 kilometers in length, beginning at approximately Kilometer 198 on the Nata-Kazungula highway and extending east to the village of Pandamatenga on the' Botswana-Rhodesia border. Construction work included clearing and grubbing of 1392 hectares, earthwork of approximately 1,120,000 cubic meters, 3,400 meters of culvert, 1538,800 cubic meters of base course and 457,200 cubic meters of surface course. The project design was performed under an agreement, dated June 15, 1971, for professional services between the Government of the Republic of Botswana and Tippetts-Abbett-McCarthy-Stratton of New York, U. S. A. -1­ B. FUNDING Funds for construction and construction supervision of the Project were provided by loan agreements between the Government of the Republic of Botswana and the United States of America acting through the Agency for International Development (AID). The funds allocated were in the amount of U.S. $16,600,000 and were derived from the following sources: -U. S. $12,600,000 AID Loan No. 690-H-001 -U. S. $ 4,000,000 First Amendment No. 690-H-001A C. CONTRACTUAL ARRANGEMENTS A contract for construction of the Botswana-Zambia Highway Project was signed on Tune 26, 1973 between the Government of the Republic of Botswana, and Grove International Corporation and Grove, Shepherd, Wilson and Kruge, Inc., a joint venture, for an estimated total cost of construction of U.S. $8,977,842.00 and Rand 3,160,825.00. The contract provided for completion of the project by April 25, 1976, a 975 day period from Notice to Proceed given on August 22, 1973. There were two amendments to the contract, both dealing with the condi­ tions and limits for "Off-Shelf" purchases. A contract for supervision of construction was entered into by the Government of the Republic of Botswana and Tippetts -Abbett-McCarthy-Stratton (TAMS) in the form of a supplement to the basic agreement for design of the project. The supplemental agreement was dated July 2, 1973. Two amendments, the first dated September 29, 1976 and the second dated July 26, 1977, extended the the time for completion and modified the original estimate for cost of inspection services. D. MODIFICATIONS OF CONTR4tCT During the course of construction twelve Change Orders, approved and signed by the Government, were issued. These orders are briefly described in Table 1. -2­ TABLE 1 CHANGE ORDERS Change Order Cost No. Purpose U.S.$ Rand/Pula 1. Hotel rentals for Engineer's staff while awaiting completion of housing units 8,421.38 2. Additional air-conditioning units for staff housing 3,768.98 53.07 3. Arrangements for monthly advance progress payments for permanent materials on site ­ 4. Addition to the number of TAMS staff housing units 39,000.00 7,806.00 5. For escalation of P.O.L. costs between 11 November 1973 and 11 February 1974 5,756.01 6. For additional escalation of P.O.L. costs between 11 February 1974 and 14 May 1974 18,153.44 7. For additional escalation of P.O.L. costs between 14 May 1974 and 19 July 1974 772,775.17 LESS OVERPAYMENT (-)16,615.39 8. Interim allowance, by GOB authorization, to all employees to maximum rate of R5.00 per month between April 1973 and March 1974 2,978.02 9. Escalation of minimum wage rates for field personnel 160,225.56 LESS OVERPAYMENT (-)1,257.20 10. Reduction InRoad Reserve clearing on Costs included in Chobe By-Pass Road amounts in pay items 3/02, 3/03 and 3/04 11. For increase in mobilization costs to Costs included in cover importation of additional compaction amounts in equipment, pay item 1/01 12. For minor realignment of roadway at Costs included in Nata contract pay items TOTALS 42,768.98 958,296.06 -3­ II. STAFFING Excluding the mobilization and demobilization periods, the major con­ struction efforts took place during the calendar years 1974, 1975 and 1976. A summary of the project staffing is presented in Table 2. TABLE 2 Average/Maximum Staffing Levels Contractor's Staff Engineer's Staff Year/Source U.S. Botswana TCN Code 941 U.S. Botswana TCN 1974 17 232 2 22 4 11 9 1975 18 302 3 43 4 12 9 1976 15 290 3 40 4 13 7 Maximum 20 359 5 49 4 14 9 A paving specialist visited the Project in December, 1973 and une, 1974 in connection with proposals for upgrading the Project, and again in March 1975 in connection with selection of material for the surface course. A partner from the Consultant's home office made periodic visits to the Project sites. III. TRAINING The Contractor trained Botswana Staff as drivers, equipment operators and oilers, surveyors, soils technicians, mechanics' helpers, stewards and maintenance workers. The Engineer trained Botswana Staff as soils technicians, surveyors, drivers, draftsmen and office clerical workers. IV. CONSTRUCTION EQUIPMENT In compliance with a requirement of the Contract Documents, the Con­ tractor presented a schedule of major plant and equipment to be used on the Project. Some adjustments were made to the listing as the job progressed. -4­ Advances, for the purchase of new items (materials, construction plant, equipment, tools, spare parts, maintenance supplies and buildings, furniture and equipment for the Contractor's and Engineer's camps) totaling U. S. $1,244,437.00 and local currency Rand 225,000 were made available to the Contractor as provided for by the Contract Documents. Reimbursement of these advances were made in January,1974 in accordance with the Contract requirements. The major items of construction and shop equipment imported by the Contractor for use on the project are listed in Appendix A. V. MATERIALS UTILIZED A. SOILS The formation consists of two layers, the surface and base courses placed on a compacted subgrade or embankment. Base course materials were obtained from 123 borrow pits along the roadway. Surface course materials, which required processing, were obtained from 9 borrow areas. Appendix B contains the Material Utilization Diagrams which show the sources of these borrow materials and their utilization along the road.