Prof. M. Meguid 2008-2009 McGill University DEPARTMENT OF CIVIL ENGINEERING AND APPLIED MECHANICS CIVE 416 - Geotechnical Engineering Assignment No. 3 1. For the retaining wall shown in Figure 1, determine the at-rest lateral earth force per unit meter length of the wall. Also, find the location of the resultant for the following cases: a) H1= 2.5 m, H2= 2.5 m, q = 0, γsat= 19 kN/m3. The backfill is granular material with c′= 0, and φ′= 30o. b) H1= 6 m, H2= 0 m, q = 0, γ= 18 kN/m3. The backfill is over-consolidated clay with a plasticity index of 26 and over consolidation ratio of 2. c) Redo case b assuming that the surcharge q = 40 kN/m2. Figure 1
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