A square footing 2.5 m × 2.5 m is built in a homogenous bed of sand of unit weight 20 kN/m3 and having angle of shearing resistance of 36 degree, the depth of the base of the footing is 1.5 m below the ground surface. The safe load-bearing capacity of the footing can carry with a factor of safety of 3 against complete shear failure is (use Terzaghi’s analysis)
1
874 kN/m2
2
676 kN/m2
3
982 kN/m2
4
768 kN/m2