Unformatted text preview: = 20°., γ sat = 19kN/m3 Assume water table is at the ground surface and use Terzaghi’s bearing capacity theory for shallow foundation 3. A footing 2.5 x 2.5 m carries a pressure of 400kN/m 2 at a depth of 1 m in a sand. The saturated unit weight of the sand is 20 kN/m 3 and the unit weight above the water table is 17 kN/m 3 . The design shear strength parameters are c′=0 and φ ′ = 40°. Determine the factor of safety with respect to shear failure for the following cases 1. the water table is 5 m below the ground level 2. the water table is 1 m below the ground level 4. A load of 425kN/m is carried on a strip footing 2 m wide at a depth of 1 m in a stiff clay of saturated unit weight 21 kN/m 3 , the water table being at ground level. Determine the factor of safety with respect to shear failure (a) when c u = 105kN/m 2 and φ u =0....
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 Spring '09
 ZheeenLing
 Geotechnical Engineering, Shear, water table, unit weight

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