2.50m x 2.50m square footing supports a 350mm x 400mm reinforced concrete column carrying a factored axial load of 930 kN. Use fc = 28 MPa and fy = 415 MPa. Use 20mm diameter reinforcing steel bars bothways. Clear concrete cover is 70 mm
A. Determine the effective depth of footing for wide-beam action
B. Determine the effective depth of footing based on two way action.
C. Determine the required safe thickness of footing.