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<br />, ~.) Shear: <br /> <br />Model 1352 <br /> <br />Load to ceiling/roof dia )hragm: <br />Height: 0-15 15-20 20-40 40-60 Total <br />Total hz. Pressure = 315.0 0.0 0.0 0.0 315.0 <br /> <br />pvlf <br /> <br /> <br />0.0 <br /> <br />6142.5 lbs <br />6142.5 lbs <br /> <br />Total shear transferred to sidewall = <br /> <br />Unit Shear at roof diaphragm: <br /> <br />v=R/b <br />Unit Shear ( v ) =1 <br /> <br />148.61 <br /> <br />0.01 <br /> <br />0.01 <br /> <br />0.01 <br /> <br />14S.61plf <br /> <br />Unit Shear at Midheight walls (v'): (Design case) <br /> <br />Total width of openings at mid-height wall: 6 ft <br /> <br />Length of wall available to resist shear = 35.33 ft <br /> <br />Unit Shear @ Midheight (v' ) = <br /> <br /> <br />Select structural element to resist v' from SBC tables ie. 1710.2B <br /> <br />Shear capacity of structural element: 1050 plf <br />Fv=35psi x 2(1.25si x 12")/ft=1050 plf <br /> <br />Required length of transverse shearwall =1 5.9 1ft <br /> <br />Longitudinal shear: <br /> <br />Height: 0-15 15-20 20-40 40-60 Total <br />Pressure: 25.2 27.6 33.6 37.2 <br />Contributing Height: 7.0 -1.0 -6.0 -26.0 <br />Unit Hz. Pressure = 176.4 0.0 0.0 0.0 <br />Reaction (R) = 3645.3 0.0 0.0 0.0 3645.3 <br />Unit shear (v=R/I) = 93.5 0.0 0.0 0.0 93.5 <br />Tot. opngs. ((i1 mid ht 28.0 28.0 28.0 28.0 28.0 <br />Unit Shear ( v') = 331.4 0.0 0.0 0.0 331.4 <br /> <br />lbs <br /> <br />ft <br /> <br />Required length of longitudinal shearwall = I 3.5 <br /> <br /> <br />Page 8 <br />