Question

A square footing of size B x B is required to carry a gross allowable load of 670 kN. The base of the footing is to be located at a depth of 1 m below the ground surface. The soil properties are as follows: γ = 18.1 kN/m 3 , c = 0, Φ = 40˚. If the required factor of safety is 3, determine the size of the footing using Terzaghi’s bearing capacity factors and general shear failure of the soil.

Solution