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A wall footing has the following conditions. Determine how much greater the factored load is than the unfactored load.The bottom of the footing is at a depth of 3 ft below grade.The service dead load is 14.7 kips/ft, and the service live load is 6.3 kips/ft.The wall is 10 in. thick.The footing is 12 in. thick.The allowable soil pressure, qa, is 4,700 psf.The soil has a density of 115 lb/ft3.The concrete has a density of 150 lb/ft3.The concrete cover has a thickness of 3 in.f’c = 3,800 psi and fy = 60,000 psi.

A wall footing has the following conditions. Determine the pressure that acts on the bottom of the footing. Assume the footing is 5 ft wide.The bottom of the footing is at a depth of 3 ft below grade.The service dead load is 15 kips/ft, and the service live load is 6.5 kips/ft.The wall is 10 in. thick.The footing is 13 in. thick.The allowable soil pressure, qa, is 5,000 psf.The soil has a density of 115 lb/ft3.The concrete has a density of 150 lb/ft3.The concrete cover has a thickness of 3 in.f’c = 3,900 psi and fy = 60,000 psi.

A wall footing has the following conditions. Determine the pressure that acts on the bottom of the footing. Assume the footing is 5 ft wide.The bottom of the footing is at a depth of 2 ft below grade.The service dead load is 13.2 kips/ft, and the service live load is 6.8 kips/ft.The wall is 14 in. thick.The footing is 12 in. thick.The allowable soil pressure, qa, is 4,300 psf.The soil has a density of 125 lb/ft3.The concrete has a density of 150 lb/ft3.The concrete cover has a thickness of 3 in.f’c = 3,500 psi and fy = 60,000 psi.

A wall footing has the following conditions. Determine the depth, d, of the reinforcement. Assume the footing is 4 ft wide, the pressure that acts on the bottom of the footing is 5,800 psf, and the reinforcement is a #4 bar spaced every 12 inches.The bottom of the footing is at a depth of 4 ft below grade.The service dead load is 10 kips/ft, and the service live load is 7 kips/ft.The wall is 14 in. thick.The footing is 13 in. thick.The allowable soil pressure, qa, is 5,400 psf.The soil has a density of 115 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.

A wall footing has the following conditions. Determine the minimum cross-sectional area of the reinforcement. Assume the footing is 3 ft wide and the pressure that acts on the bottom of the footing is 7,466 psf.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 8 kips/ft.The wall is 10 in. thick.The footing is 12 in. thick.The allowable soil pressure, qa, is 5,900 psf.The soil has a density of 115 lb/ft3.The concrete has a density of 150 lb/ft3.The concrete cover has a thickness of 3 in.f’c = 3,300 psi and fy = 60,000 psi.

A wall footing has the following conditions. Determine the required development length, ld, for the reinforcement. Assume the footing is 6 ft wide, the pressure that acts on the bottom of the footing is 4,866 psf, and the reinforcement is a #8 bar spaced every 12 inches.The bottom of the footing is at a depth of 4 ft below grade.The service dead load is 15 kips/ft, and the service live load is 7 kips/ft.The wall is 14 in. thick.The footing is 12 in. thick.The allowable soil pressure, qa, is 4,700 psf.The soil has a density of 110 lb/ft3.The concrete has a density of 150 lb/ft3.The concrete cover has a thickness of 3 in.f’c = 3,900 psi and fy = 60,000 psi.

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 6,666 psf, and the reinforcement is a #6 bar spaced every 12 inches.The bottom of the footing is at a depth of 2 ft below grade.The service dead load is 6 kips/ft, and the service live load is 8 kips/ft.The wall is 14 in. thick.The footing is 10 in. thick.The allowable soil pressure, qa, is 5,700 psf.The soil has a density of 110 lb/ft3.The concrete has a density of 150 lb/ft3.The concrete cover has a thickness of 3 in.f’c = 3,700 psi and fy = 60,000 psi.

A wall footing has the following conditions. Determine the depth, d, of the reinforcement. Assume the footing is 4 ft wide, the pressure that acts on the bottom of the footing is 4,800 psf, and the reinforcement is a #8 bar spaced every 12 inches.The bottom of the footing is at a depth of 4 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 15 in. thick.The allowable soil pressure, qa, is 4,400 psf.The soil has a density of 125 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.

It is not unusual for columns to support axial forces and bending about two perpendicular axes.

A wall footing has the following conditions. Determine the depth, d, of the reinforcement. Assume the footing is 4 ft wide, the pressure that acts on the bottom of the footing is 5,800 psf, and the reinforcement is a #4 bar spaced every 12 inches.The bottom of the footing is at a depth of 2 ft below grade.The service dead load is 10 kips/ft, and the service live load is 7 kips/ft.The wall is 12 in. thick.The footing is 13 in. thick.The allowable soil pressure, qa, is 5,300 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 = 3,200 psi and fy = 60,000 psi.