Determine the factor of safety with respect to shear failure

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Reference no: EM13313986

A footing 3m X 3m carries a pressure of 500 kN/ m2 at a depth of 1m in a sand substrate. The saturated unit weight of the sand is 20 kN/ m3 and the unit weight above the water table is 18 kN/ m3. The design shear strength parameters are c' = 0 and t' = 40°. Determine the factor of safety with respect to shear failure for the following cases:

(a) the water table is 5m below ground level,

(b) the water table is 1m below ground level,

Reference no: EM13313986

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