Design a rectangular footing for an 18-in square interior column
with a dead load of 210 k and a live load of 180 k. Make the length
of the long side equal to twice the width of the short side, fy =
60,000 psi, fc' = 4000 psi, normal weight, and qallowable= 3650
psf. Assume the base of the footing is 5 ft 0 in below-grade , γ
concrete = 150 pcf and γ soil = 100 pcf. Also, assume...