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Madison Industries <br />Designed by: ML/JFB <br />August 4, 2016 <br />Job No: WCA17861 Mobil Fueling Canopy <br />h <br />n <br />Pi <br />Customer: Mobil Fueling Canopy <br />Structure: 65-0" x 54'-4" (4) Column Canopy <br />Location: Tracy, CA 95377 <br />Sheet 42 <br />Foundation for Column C1 <br />Use constrained design employing lateral bearing per IBC Section 1805.7.2.2: <br />H' Soils Report Received? (y/n) n <br />SEISMIC CONDITIONS GOVERN <br />Base lateral bearing pressure = 100 psf/ ft depth (Table 1804.2) <br />Is structure adversely affected by 1/2 inch ground motion?(y/n) n <br />Mg Equivalent applied lateral force (H') = 6463.1 lbs <br />Design lateral passive earth pressure = 200 psf/ft depth (Sect. 1804.3.1) <br />\— Top of footing is <br />constrained by <br />drive slab <br />—�' Iel__ <br />Alternate No. 1: Drilled Pier Footin <br />Design Loads: P = PDL+LL = 24.92 k <br />H'= (Hseis)(Omega) = 6.46 k <br />Column height (h) = 18.83 ft <br />Mg = H'h = 122 ft -k <br />Required Footing Depth (d) = [4.25Mg/(S3b)1"' <br />Diameter of round footing (b,) = 5.00 ft <br />Required depth for this diameter: Lateral Loads = 8.5 ft <br />Uplift = 4.0 ft <br />Therefore use depth (df) = 8.5 ft <br />Actual bearing on soil at bottom of footing = (P)/(Afooting) = 1269 psf <br />Allowable bearing to check soil at bottom of footing = 1500 psf per IBC <br />Footing Size is OK for Soil Bearing <br />Therefore use 5.00 ft diameter x 8.5 ft deep footing <br />Cross-sectional Area of Reinforcing Steel Required: <br />Ax per quad = 1.33M/[(fs)0)(d)] = 1.69 inz per quadrant F J <br />L' <br />Where: M = <br />122 ft -k <br />fs = <br />24 ksi <br />j = <br />0.886 <br />d = <br />4.50 ft <br />Area of Footing, Aft = <br />2290.2 int <br />Area steel, AX total reqd. = <br />5.63 int or <br />(conservative) <br />Use 16 No. 6 vertical rebars per footing <br />JUN 0 8 2011 <br />k.'T <br />AX total reqd = 0.0018Afrg = 4.12 int OK <br />(AX = 7.04 int ) <br />