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Footings Example 1 Design of a square spread footing of a ...
www.concrete.orgFeb 13, 1971 · resisting the seismic load) Material properties Concrete compressive strength f’ c = 4 ksi Steel yield strength f y = 60 ksi Normalweight concrete = 1 Density of concrete = 150 lb/ft3 Allowable soil-bearing pressures D only: q all.D = 4000 psf D + L: q all,D+L = 5600 psf D + L + E: q all.Lat = 6000 psf Fig. 1.1—Rectangular foundation plan.