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COMBINED WIND & ROOF LOADING ON WOOD COLUMN <br />Located at existing header at right of Dining, end 'b' <br />D <br /> =13.20 ft 113 lb <br />Tributary width =1.33 ft (1) D = <br />Wall Pressure Zone =fig 30.4-1 (2) D+.75Lr+.75L = <br />(3) D+0.6W <br />(4) D+0.75(0.6W)+.75L+.75Lr <br />Wind Uniform Lateral Load (psf):Adjustment Factors, C <br />Fb Fc E <br />ASCE 7-16, Chapter 30: CD =1.33 1.33 <br />h = qz = 0.00256 KzKztKdV (26.10-1)CD Wind =1.6 1.6 <br />Kz = Kzt =1 Kd =0.85 CM =1.0 1.0 <br />qh =17 psf GCp =-1.0 , 0.9 fig 30.4-1 Ct =1.0 1.0 <br />pi =0.18 , -0.18 table 26.13-1 CL =1.0 -- <br />h[(GCp)-Gcpi)] =CF =1.50 1.15 <br />Douglas Fir Design Value: NDS Table 4A Cr =1.00 -- <br />E =x 106 psi Fc ﬩ =psi Ci =1.0 1.0 <br />Fb =psi Fc =psi <br />Vertical Load Design:Wind Load Design: <br />Trib. width = ft <br />P = Axial Load on Stud = lbs M = wL2 / 8 =ft-lb <br />fc = fc┴= P / A =5 psi fb = M / S =psi <br />e / dx =Fb' = Fb(CD)(CM)(Ct)(CL)(CF)(Cr)(Ci) <br />E' = E (CM)(Ct)(Ci) =x 106 psi Fb' =2160 psi > fb=psi OK! <br />KcE =0.3 for Visually Graded Lumber Pa =113 fc =psi <br />c = 0.8 for Sawn Lumber FcE =KcE E' / (e / d)2=psi <br />FcE = KcE E' / (e / d)2=psi F*c = Fc(CD)(CM)(Ct)(CF)(Ci) <br />F*c = Fc(CD)(CM)(Ct)(CF)(Ci) =psi F*c =psi <br />FcE / F*c = FcE / F*c =0.094 <br />(1 + FcE / F*c) / 2c = (1 + FcE / F*c) / 2c = <br />p=((1+FcE/F*c)/2c)-((((1+FcE/F*c)/2c)2)-(FcE/F*c)/c).5 Cp = <br />Cp = F'c = Fc(CD)(CM)(Ct)(CF)(CP)(Ci) <br />F'c = Fc(CD)(CM)(Ct)(CF)(CP)(Ci)F'c =230 <br />(1)F'c =psi > f'c= psi, OK! Stud Lateral Reaction: <br />(2)F'c =psi > f'c=psi, OK! R = 140 lb Z' = 126 lb/16d (2) 16d's <br />Pallow = lb Deflection = 5 wL^4/(384EI) = 0.42 374 <br />Member Properties:Combined Stress: <br />Area = in (3)((fc/F'c)2+(fb/(F'b(1-fc/FcE)))) =. <br />S =3 (4)((fc/F'c)2+(fb/(F'b(1-fc/FcE)))) =. <br />Provide:(4 )x 4 <br />L Lr <br />Height of Column Point Load =- 150 <br />16.0 psf -- <br />113 <br />Middle Zone 226 <br /> -- <br /> -- <br />0.85 1.0 <br />1.0 <br /> -- <br /> -- <br />1.6 695 1.0 <br />900 1350 <br />1 <br />113 226 463 <br />11 454 <br />0.684 <br />0.092 <br />45 <br />1.6 454 <br />5 <br />234 <br />234 <br />4802 <br />2065 2484 <br />0.113 <br />0.696 <br />0.111 <br />229 5 <br />304 11 <br />21.00 0.22 <br />12.25 0.17 <br />2 DF #2 (3)K, (1)T <br />in = L/ <br />Page 1912/06/202424-0303-ST <br />1925 E Fruit St <br />2/26/2025