1.

A cut is to be made in clay for which the cohesion is 30kN/sq.m and negligible friction angle. If the density of the soil is 20 kN/cum and the factor of safety for the design is 1.5, the maximum depth for a cutting of side slope 1.5 : 1 is (Assume stability number as 0.17)

A. 6.28
B. 5.88
C. 3.36
D. 4.88
E. 5.3
Answer» C. 3.36


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