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Langford Deck Replacement 3 <br /> Structural Calculations <br /> Check Column <br /> • <br /> 'Joist <br /> pcol (wdl+ `nll�' 2 • <br /> 'beam=3000 Max load to each column(Ibs) <br /> Use 245;24"square footings to limit bearing pressure to less than 1,000 psf <br /> H:= 8.12 =96 Unrestreained height of column (in) <br /> bcol 3 5 Provided column width (in) <br /> dcol 5 5 Provided column depth(in) <br /> Acol bcol'dcol = 19.25 Column area(inA2)4x6 <br /> CF:= 1.3 Size factor(4x6) <br /> Fc.= 1300 Reference compression parallel(psi) <br /> • <br /> C := 0.8 Factor for sawn lumber(NDS 3.7.1) <br /> E:= 1.2 x 106 Wood modulus(psi)(Table 4A) <br /> le := 0.8•H=76.8 effective length(assumes pinned/fixed condition) <br /> Fes := Fc•CF= 1690 Fc*factor in NDS <br /> F •_ 0.822.E = 5059 <br /> CE - <br /> le <br /> dcol/ <br /> (F \ - /F -2 iF <br /> 1 + cE 1 + cE cE <br /> Cp Fcs _ Fcs Fcs =0.919 Column stability factor <br /> •C 2C <br /> FC := Fc•Cp•CF= 1553 Factored allowable compressive stress(psi) <br /> 6c of Pcol = 155.84 Column compressive stress(psi) <br /> Acol <br /> -Column OK for roof loads(26 psi max«909 psi allowable) <br /> -Connect beam to column w/Simpson BCS4 <br /> -Connect column to footing w/Simpson BC40 • <br /> By: J. Conner, PE, SE Deck Structural Calcs.xmcd <br /> 12/4/2019 <br />