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Roofing Type Comp Shingles <br />Sheathing Type 1/2" OSB Board <br />Wood species No. 2, Douglas Fir-Larch <br />Wood Fb (psf)900 <br />Wood Fv (psf)180 <br />Wood E (psf)1600000 <br />Purlin C/C Spacing (in)12 <br />Rafter C/C. Spacing (in.)24 <br />Purlin <br />Section Thickness, b (in.)2 <br />Section Depth, d (in.)4 <br />Rafter <br />Section Thickness, b (in.)2 <br />Section Depth, d (in.)6 <br />Maximum Rafter Span (ft)11 <br />Factors <br />Cd(wind)1.60 <br />Cd(Snow)1.60 <br />CLS 1.15 <br />CM 1 <br />Ct 1 <br />CL 0.75 <br />CF 1.5 <br />Cfu 1 <br />Cv 1 <br />Cr 1 <br />M allowable_wind 1020.94 <br />M allowable_snow 733.80 <br />303 N. Glenoaks Blvd Suite #200 Burbank, CA 91502 | (747)333-5991 | new@engineerinc.io <br />421 S Huron Dr - <br />2018016207/03/23