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SUNYANI TECHNICAL UNIVERSITY FACULTY OF ENGINEERING DEPARTMENT OF CIVIL ENGINEERING (STU) END OF FIRST SEMESTER EXAMINATION, 2019/2020 PROGRAMME & YEAR B-TECH CIVIL I COUR “ODE TITLE : CVE 401: FOUNDATION ENGINEERING EXAMINER : NOBLE OBENG-ANKAMAH TIME ALLOWED 3 HOURS INSTRUCTIONS : Answer three questions (Question } and any other nyo). nna a) ( (a) Proportion a Tectangular combined footing for uniform pressure under dead load plus reduced live load, with the foliowing data: Allowable soil pressures are: 150 KN/n? for DL + reduced LL i 225 KN/n? for DL + LL Column loads: Column A Column B DL 540 kN 690 kN LL 400 kN 810 kN Distance c/c of columns = 54m Projection of foating beyond Column A = 0.5 m (b) Describe any four (4) types of shallow {eFdations explaining briefly the conditions under which each of them is recommended\ (©) Mention three types of retaining walls and br iefly explain, with illustrations, how each of them achieves stability. (40 marks) Ye Explain briefly the terms “compressibility”, “consolidation” and “compaction” of Soils. (b) In a consolidation test ona compressible saturated marsh deposit, the following results have been obtained. When the load was changed from S0kN/m? to 100KN, ‘m’, the void ratio changed from 0.70 to 0.65. Determine (i) the coefficient of volume decrease, my of the deposit (ii) The compression index, C- of the deposit. (of A sand fill compacted to a bulk density of 18 KN/m} is to be placed ona compressible saturated marsh deposit 3.5 m thick. The height of the sand fill is to be 3 m. If the volume compressibility my of the deposit is 7 x 107 m’/KN, estimate the final settlement of the fill, (30 marks) Scanned wilh CamScunner 
