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<br />XI.) Shear: <br /> <br />DiPasquale Addition <br /> <br />L d t <br /> <br />T g! fd' h <br /> <br />oa 0 cel In roo lap! ragm: <br /> Height: 0~15 15~20 20-40 40~60 Total <br />Total hz. Pressure = 252.0 0.0 0.0 0.0 252.0 <br /> <br />pvlf <br /> <br /> <br />0.0 <br /> <br />2016.0 lbs <br />2016.0 lbs <br /> <br />Total shear transferred to sidewall = <br /> <br />Unit Shear at roof diaphragm: <br /> <br />v=R/b <br /> <br />Unit Shear ( v ) =1 <br /> <br />201.61 <br /> <br />0.01 <br /> <br />0.01 <br /> <br />o.ol <br /> <br />201.61plf <br /> <br />Unit Shear at Midheight walls ( v'): (Design case) <br /> <br />Total width of openings at mid~height wall : <br /> <br />6 <br /> <br />ft <br /> <br />Length of wall available to resist shear = <br /> <br />4 <br /> <br />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: <br /> <br />560 plf <br /> <br />(15/32" RS. wi lOd nails at 3"-edges) <br /> <br />Required length of transverse shearwall = I 3.6 1ft <br /> <br />Longitudinal shear: <br /> <br />Height: 045 15-20 20~40 40-60 Total <br />Pressure: 25.2 27.6 33.6 37.2 <br />Contributing Height: 6.0 -3.0 -8.0 -28.0 <br />Unit Hz. Pressure = 151.2 0.0 0.0 0.0 <br />Reaction (R) = 756.0 0.0 0.0 0.0 756.0 <br />Unit shear (v=R/I) = 47.3 0.0 0.0 0.0 47.3 <br />Tot. opngs. ({iJ mid ht 13.5 13.5 13.5 13.5 13.5 <br />Unit Shear ( v') = 302.4 0.0 0.0 0,0 302.4 <br /> <br />lbs <br /> <br />ft <br /> <br /> <br />Required length of longitudinal shearwall =1 1.4 1ft <br /> <br />Page 8 <br />