Laserfiche WebLink
Spectral Accelaration (Short Period), Sbs <br />Component Amplification Factor, ap <br />Response Modification Factor, RP <br />Component Importance Factor, Ip <br />Component Operation Weight, Wp <br />Vertically Cantilevered System <br />Component Height, z <br />Average Roof Height, h <br />z <br />h <br />z <br />1+2h <br />0.4apSDs z <br />Rp (1 + 2 h) <br />/Ip <br />0.4apSDSWp (1 + 2 z) <br />Fp = Rp/I h <br />p <br />Fp (Max) = 1.6 SDS: <br />Fp (Max) = 1.6 SDsIpWp <br />Fp (Min) = 0.3SDS: <br />Fp (Min) = 0.3SDSIpWp: <br />Concurrent Vertical Seismic Force, +-0.2SDsWp: <br />Seismic Design Force, Fp: <br />Page 17 <br />0.876 <br />2.50 <br />ASCE 7-10 Table 13.5-1 or 13.6-1 <br />6.00 <br />ASCE 7-10 Table 13.5-1 or 13.6-2 <br />1.00 <br />ASCE 7-10 13.1.3 <br />357 Ibs <br />Y <br />14.00 ft <br />12.00 ft <br />1.17 <br />3.33 <br />= 0.49 <br />173.7 Ibs ASCE 7-10, 13.3-1 <br />Overturning Force Fp = 122 # <br />Overturning Moment Mp = 122# x 2.5' = 305 #' <br />Resisting Force W = 357 # <br />Resisting Moment Mr = 357# x 3.2572 = 580 #' <br />for loading combination: 0.6DL + EQ <br />Net Tension Force T = (0.6 x 580-305)/3.25' _ +13.2 # >0 <br />No net uplift occur. <br />Provide (3) 1 /4" dia lag screws to <br />supporting roof member each side: <br />Va=1.6x6x150#=1440#>Fp O.k. <br />1.40 <br />500.4 <br />Ibs ASCE 7-10 Eq. 13.3-2 <br />0.26 <br />93.8 <br />Ibs ASCE 7-10 Eq. 13.3-3 <br />+-63 <br />Ibs <br />173.7 <br />Ibs <br />121.6 <br />IbsASD <br />Wp <br />MAU <br />3'-3" <br />ROOF <br />- <br />