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• <br /> Langford Deck Replacement 3 <br /> Structural Calculations <br /> Check Column <br /> p (wdl <br /> will <br /> ijoist 1 =3000 Max load to each column(Ibs) <br /> col dl 111 2 beam <br /> Use 24"x24"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 /> 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 /> Fcs := Fc•CF= 1690 Fc*factor in NDS <br /> 0.822•E <br /> FcE:_ =5059 <br /> 1 \2 <br /> e <br /> dcol <br /> /FcE /FcE\-2 rFcE� <br /> 1 + 1 + <br /> CCp Fcs _ Fcs _ Fcs =0.919 Column stability factor <br /> 2•C 2C C <br /> FC := Fc.Cp.CF= 1553 Factored allowable compressive stress(psi) <br /> 6co1 • 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 /> 12/5/2019 <br />