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<br />" . <br /> <br />XI.) Shear: <br /> <br />Bertuca Home <br /> <br />Load to ceiling/roof dia :>hragm: <br />,,',':c Height: 0-15 15-20 20-40 40-60 Total <br />". Total hz, Pressure = 346.5 114,9 0.0 0.0 461. 4 <br /> <br />pvlf <br /> <br /> <br />0.0 11765.3 lbs <br /> <br />Total shear transferred to sidewall = 11765.3 lbs <br /> <br />Unit Shear at roof diaphragm: <br /> <br />v=R/b <br />Unit Shear (v) =1 <br /> <br />200.81 <br /> <br />66.61 <br /> <br />0,01 <br /> <br />0.01 <br /> <br />267.4'plf <br /> <br />Unit Shear at Midheight walls (Vi): (Design case) <br /> <br />Total width of openings at mid-height wall : <br /> <br />8 <br /> <br />ft <br /> <br />Length of wall available to resist shear = <br /> <br />36 <br /> <br />ft <br /> <br />Unit Shear @ Midheight ( Vi ) = <br /> <br /> <br />Select structural element to resist Vi from SBC tables ie. 1710.2B <br /> <br />Shear capacity of structural element: 380 plf <br />(15/32" R.S. wi 8d nails at 4"-edges) <br /> Required length of transverse shearwall = I 31.0 1ft <br />Longitudinal shear: <br /> Height: 0-15 15-20 20-40 40-60 Total <br /> Pressure: 25.2 27.6 33.6 37.2 <br />Contributing Height: 11.0 3.3 -1.7 -21. 7 <br />Unit Hz. Pressure = 277.2 91.9 0.0 00 <br />Reaction (R) = 6098.4 2022.0 0.0 00 <br />Unit shear (v=R/I) = 119,6 39.6 0,0 0,0 <br />Tot.opngs. mid ht 29.5 29,5 29.5 29.5 <br />Unit Shear ( Vi) = 283.6 94.0 0.0 0.0 <br /> Required length of longitudinal shearwall =1 21.4 1ft <br /> <br />Page 8 <br /> <br />