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Heater Seismic Force <br />Spectral Accelaration (Short Period), SDS <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 />= 0.876 <br />= 1.00 <br />ASCE 7-10 Table 13.5-1 or 13.6-1 <br />= 2.50 <br />ASCE 7-10 Table 13.5-1 or 13.6-2 <br />= <br />ASCE 7-10 13.1.3 <br />= 19 Ibs <br />= Y <br />= 10.00 <br />= 12.00 ft <br />122 # actual weigh, ok to <br />use 199 # for calc purpose. <br />= 0.83 <br />= 2.67 <br />O.RppSDs 1 1 + 2 h� _ <br />�[p <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 />HVAC Support Design <br />Vertical Force: V = 199 # <br />Horizontal Force H = 52 #c <br />Provide (8) 1/2" dia hanger rod for gravity, O.K. <br />0.37 <br />74.4 Ibs <br />1.40 <br />278.9 Ibs <br />0.26 <br />52.3 Ibs <br />+-35 Ibs <br />74.4 Ibs <br />52.1 Ibs ASD <br />For Lateral: <br />1) 16 ga Clip w/ (2) #10 Screws connecting to Curtain wall <br />each #10 screw Va = 110 # x 2 = 220 # > H, O.K. <br />2) (2) 1/2" dia diagonal rod connecting to Roof Joist w/ 3/8" dia screw <br />each 3/8" screw Va = 280 # > H. O.K. <br />ASCE 7-10, 13.3-1 <br />ASCE 7-10 Eq. 13.3-2 <br />ASCE 7-10 Eq. 13.3-3 <br />