A wall footing has the following conditions. Determine the d…
A wall footing has the following conditions. Determine the depth, d, of the reinforcement. Assume the footing is 3 ft wide, the pressure that acts on the bottom of the footing is 6,400 psf, and the reinforcement is a #7 bar spaced every 12 inches.The bottom of the footing is at a depth of 3 ft below grade.The service dead load is 8 kips/ft, and the service live load is 6 kips/ft.The wall is 12 in. thick.The footing is 14 in. thick.The allowable soil pressure, qa, is 5,700 psf.The soil has a density of 120 lb/ft3.The concrete has a density of 150 lb/ft3.The concrete cover has a thickness of 3 in.f’c = 3,100 psi and fy = 60,000 psi.