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Madison Industries <br />Designed by: ML/JFB <br />August 4, 2016 <br />Job No: WCA17860- Mobil Fueling Canopy <br />Customer: Mobil Fueling Canopy <br />Structure: 65'-0" x 54'-4" (4) Column Canopy <br />Location: Tracy, CA 95377 <br />Sheet 38 <br />Base Plate for Column C1 <br />Base Plate Dim's & Material: Material = A572 Gr.50 <br />F, = 30 ksi <br />FY = 50.0 ksi <br />Length of square edge of base plate, w = 22 in <br />Base Plate Area, A = 484 in <br />Column used = HSS12x12x3/8 <br />Base Plate Thickness: (ASD Design) <br />1) Base plate thickness (tp1) per compression of concrete <br />(Use min of 22 inches) <br />P <br />M <br />Pressure due to Axial Load P, fp1 = P/A = <br />17.3 psi <br />Pressure Due to Moment M, fp2 = (2M/jd)/wkd) = <br />1294 psi <br />Where: P = <br />8.36 k <br />M(including overstrength) = <br />121.7 ft -k <br />Where: kc! = <br />6.04 in <br />jd = <br />16.99 in <br />d = <br />19 in <br />tp1 = (2)(a-0.95b)sgrt(fp1/Fy)+(a-0.95b)sgrt(fp2/Fy) = <br />1.001 in (m <br />Where: a = <br />11 in <br />b = <br />6 in <br />2) Base plate thickness (tp2) per tension on anchor bolt: <br />Tension on A.B.'s, one side of B.P. = T = (M-Pc)/(2c) = 77.0 k <br />tp2 = sgrt{6M'/[(0.75)(Fy)(w)]] = 1.355 in <br />Where: c = 9.0 in <br />F -ILL, r' (' P = 8.4 k <br />JUN 08 2017 M' _ (T)(c-0.95b) = 254 in -k <br />(min) <br />Therefore use Base Plate 1.375 in thk x 22 in x 22 in <br />Weld of Column to Base Plate: <br />Allowable stress in weld: <br />Fillet weld: Fw = (0.3)(70ksi) = 21.0 ksi <br />Full Pen. weld: Fw = Ft(Base Plate) = 30.0 ksi (same as base metal) <br />Actual stress in weld: <br />Square fillet weld: Weld size = 0.563 in <br />fW = P/AW + M/SW = 19.6 ksi OK <br />Simple square full penetration weld: <br />fW = P/AW + M/S, = 20.8 ksi OK <br />Use 0.5625 inch fillet weld all around for column to base plate <br />J <br />f1 <br />f2a <br />