A square footing (B X B) must carry a gross allowable load of 42,260 lb. The base
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A square footing (B X B) must carry a gross allowable load of 42,260 lb. The base of the footing is to be located at a depth of 3 ft below the ground surface. For the soil, we are given that γ = 110 lb/ft3, c' = 200 lb/ft2, and ϕ' = 20ο. If the required factor of safety is 3, determine the size of the footing. Use Terzaghi’s bearing capacity factors and assume general shear failure of soil.
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