Fall 2017 Assignment # 7 Due Date: Sunday, Jan 07 at the start of class Q....
1. Design a wall footing for the following conditions. Service dead load is 6 kips/ft, service live load is 8 kips/ft. Soil unit weight is 120 lb/ft?. Allowable soil pressure, qa is 4000 psf. The base of the footing is placed 3 ft below the ground surface. Wall is 12 in, thick. Geotechnical analyses have determined the width to be 4 ft. fe' = 3500 psi normal weight concrete, and fy = 60 ksi. Note: you don't need to design...
2. Design a square spread footing for the following conditions. Service dead load is 350 kips, service live load is 275 kips. Soil density is 130 lb/ftº. Allowable soil pressure is 4500 psf. Column is 18 in. square. Geotechnical analyses have determined the width to be 13 ft. fe' = 3500 psi normal weight concrete, and fy= 60 ksi. The base of the footing is placed 5 ft below the ground surface. Note: you don't need to design the bar...
15.3. psi. Design a single-column footing (including dowels) to support an 11 in. square column reinforced with eight No. 9 (No. 29) bars centered 2.5 in. from the column faces (equal number of bars on each face). The unfactored axial dead load = 135 kips, and the unfactored axial live load=125 kips. For the column, f=4000 psi and f=60,000 psi. The base of the footing will be 3 ft below grade. The allowable soil bearing pressure is 3000 lb/ft2. Material...