A raft foundation 10 m wide and 12 m long is to be constructed in a clayey soil having shear strength of 12 kN/m2. Unit weight of soil is 16 kN/m3. The ground surface carries a surcharge of 20 kN/m2; the factor of safety is 1.2 and the value of Nc = 5.7. The safe depth of foundation will be nearly

A raft foundation 10 m wide and 12 m long is to be constructed in a cl

1.	A raft foundation 10 m wide and 12 m long is to be constructed in a clayey soil having shear strength of 12 kN/m2. Unit weight of soil is 16 kN/m3. The ground surface carries a surcharge of 20 kN/m2; the factor of safety is 1.2 and the value of Nc = 5.7. The safe depth of foundation will be nearly
A.	8.2 m
B.	7.3 m
C.	6.4 m
D.	5.5 m
Answer» E.

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A raft foundation 10 m wide and 12 m long is to be constructed in a clayey soil having shear strength of 12 kN/m2. Unit weight of soil is 16 kN/m3. The ground surface carries a surcharge of 20 kN/m2; the factor of safety is 1.2 and the value of Nc = 5.7. The safe depth of foundation will be nearly

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