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<br />VII.) Net Uplift <br /> <br />Model 213 7 <br /> <br />Roof Deadloads: <br /> <br />(sac Appendix A) <br /> <br />Element Description Weight (pst) <br />Covering Fiberglass Shingles 2.0 <br />Sheathing 1/2" CDX 1.6 <br />Framing Wood Trusses @ 24" o.C. 6.0 <br />Ceiling 1/2" Gypsum 2.2 <br /> <br />Total Roof Load = <br /> <br />11.8 <br /> <br />psf <br /> <br />Height (ft) Uplift Pressure(pst) Roof Load (pst) Net Uplift (pst) <br />0-15 -21.0 11.8 -9.2 <br />15-20 -23.0 11.8 -11.2 <br />20-40 -28.0 11.8 -16.2 <br />40-60 -31.0 11.8 -19.2 <br /> <br />VIII.) Hold-down at truss connection: <br /> <br />Maximum truss length = <br /> <br />40.0 ft <br /> <br />(Assumes building width + 2 x overhang) <br /> <br />Truss spacing (ft) = <br /> <br />2 <br /> <br />ft <br /> <br />Height (ft) Contrib. area (st) Net Uplift (pst) ......Uplift per b~. (lbs) <br />0-15 80.0 -9.2 -368.0 <br />15-20 80.0 -11.2 -448.0 <br />20-40 80.0 -16.2 -648.0 <br />40-60 80.0 J -19.2 -768.0 <br /> <br />** Specify hold-down accordingly, FS 'built in' to Mfr's tables. <br /> <br />Page 5 <br /> <br />