|
Seismic Load Calculation for Components and System
<br /> (Reference:2018 IBC Section 1613&ASCE 7-16 Section 13.3)
<br /> Seismic Force:
<br /> 0.2s Spectral Response Acceleration,Site Class B,5, = 1.349 (ASCE 7,Figure 22-1 thru 22-8)
<br /> 1.Os Spectral Response Acceleration,Site Class B,Si = 0.478 (ASCE 7,Figure 22-1 thru 22-8)
<br /> D(assumed/
<br /> Site Class = default) (ASCE 7,Section 11.4.3)
<br /> Seismic Design Category = D (ASCE 7,Tables 11.6-1&11.6-2)
<br /> Site Coefficient per 5,&Site Class,F, = 1.20 (ASCE 7,Table 11.4-1)
<br /> Site Coefficient per Si&Site Class,Fv = 1.82 (ASCE 7,Table 11.4-2)
<br /> 5Ms=F,S, = 1.619 (ASCE 7,Section 11.4.4)
<br /> 5M3=Frcc1 0.871 (ASCE 7,Section 11.4.4)
<br /> '
<br /> SDs=2/3 SMs = 1.079 (ASCE 7,Section 11.4.5)
<br /> Spy=2/3 SMS = 0.581 (ASCE 7,Section 11.4.5)
<br /> (Per ASCE 7-16,13.3)
<br /> Component Amplification Factor,ap = 1.0 (ASCE 7,Table 13.6-1)
<br /> Component Response Modification Factor,Rp = 2.5 (ASCE 7,Table 13.6-1)
<br /> Overstrength Factor,nD = 2.0 (ASCE 7,Table 13.6-1)
<br /> Component Importance Factor,Ip = 1.0 (ASCE 7,Table 1.5-2)
<br /> Component Operating Weight,Wp = Wp (lb)
<br /> Height in structure at lowest point of attachment of component,zi = 28.5 (ft)
<br /> Height in structure at highest point of attachment of component,zz = 28.5 (ft)
<br /> Average Roof Height of Structure,h = 28.5 (ft)
<br /> 0.4apSpsWp
<br /> Seismic design force,Fp = (1+2z/h)
<br /> Rp/Ip (Eq.13.3-1)
<br /> Max.seismic design force,F,,,„,„ = 1.6SDsipWp (Eq.13.3-2)
<br /> Min.seismic design force,Fmk, = 0.3SDsIpWp (Eq.13.3-3)
<br /> Seismic design force at lowest point,FP1 = 0.518 Wp
<br /> Fp Inver 0.518
<br /> Seismic design force at highest point,FP2 = 0.518 Wp
<br /> Min.seismic design force,Fp„in = 0.324 Wp
<br /> Max.seismic design force,Fp,,,, = 1.727 Wp
<br /> Seismic design force,Fp(ASD) = 0.370 Wp
<br /> Description By Date
<br /> C o
<br /> JDM 1/27/2023 ENGINEERING yea Date
<br /> Seismic Loads For Components&Systems
<br /> Project Scale Sheet No.
<br /> N.T.S.
<br /> 2504th Ave.South SN17 Eastmont
<br /> Suite 200 lob No.
<br /> Edmonds,WA 98020 23007.128
<br /> 7
<br />
|