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Langford Deck Replacement 1 <br /> Structural Calculations <br /> Deck Structural Calculations <br /> NI := 10 Deck dead load (psf) <br /> mill:= 40 Deck live load(psf) <br /> ]joist 7 5 Joist span(ft) <br /> ]beam 16 Max beam span(ft) <br /> 12.1.33(wdl + Wll)'1'oist2 <br /> Mjoist :_ = 5611 Max joist moment(in-Ibs) <br /> 8 <br /> Fb := 900 DFL bending stress(pd) <br /> Mjoist Sieq := = 6.234 Section modulus required for stresses(inA3) <br /> Fb <br /> E:= 1.6-106 Wood modulus(psi) <br /> Amax•= foist'12 = 0.25 Max deflections(in) <br /> 360 <br /> 5.1.33•(wdl + Wll)'ljoist4'1728 <br /> Ireq :_ = 11.836 Moment of inertia required for deflections(in^4) <br /> 384•E• max <br /> Use 2x8 joists @ 16"o.c.(S=13.14 in^3, I=47.63 inA3) <br /> Connect to beam/ledger w/Simpson Joist hangers <br /> F► $HALL <br /> OF WASyIC" <br /> 00 ca -i <br /> 14 <br /> /v2/`/�i <br /> By: J. Conner, PE, SE Deck Structural Calcs.xmcd <br /> 12/4/2019 <br />