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Kitchen Hood Seismic Force <br />Spectral Accelaration (Short Period), SDS = <br />0.876 <br />Component Amplification Factor, ap = <br />1.00 <br />ASCE 7-10 Table 13.5-1 or 13.6-1 <br />Response Modification Factor, RP = <br />2.50 <br />ASCE 7-10 Table 13.5-1 or 13.6-2 <br />Component Importance Factor, Ip = <br />1.00 <br />ASCE 7-10 13.1.3 <br />Component Operation Weight, Wp = <br />450 <br />Ibs <br />Vertically Cantilevered System = <br />Y <br />Component Height, z = <br />10.00 <br />ft <br />Average Roof Height, h = <br />12.00 <br />ft <br />Z <br />h = <br />0.83 <br />Z <br />1+2h = <br />2.67 <br />0 <br />1 + 2 h) = <br />0.37 <br />Rppsos <br />IIp <br />0.4apSDSWp z <br />1 + 2 <br />h) = <br />Fp = RpIIp <br />168.2 <br />Ibs <br />ASCE 7-10, 13.3-1 <br />Fp (Max) = 1.6 SDS: <br />1.40 <br />Fp (Max) = 1.6 SpSIpWp: <br />630.7 <br />Ibs <br />ASCE 7-10 Eq. 13.3-2 <br />Fp (Min) = 0.3SpS: <br />0.26 <br />Fp (Min) = 0.3SpSIpWp: <br />118.3 <br />Ibs <br />ASCE 7-10 Eq. 13.3-3 <br />Concurrent Vertical Seismic Force, +-0.2SpSWp: <br />+-79 <br />Ibs <br />Seismic Design Force, Fp: <br />168.2 <br />Ibs <br />117.7 <br />Ibs ASD <br />Kitchen Hood Support Design <br />Vertical Force: V = 450 # <br />Horizontal Force H = 120 # <br />Provide (2) 1/2" dia hanger rod for gravity, O.K. <br />16 ga Z-girt w/ (3) #10 Screws connecting to Existing wall each end for lateral <br />each #10 screw Va = 110 # x 3 = 330 # > H, O.K. <br />