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Project Title: 76-Fuel Tanks <br /> CULLUMBER ENGINEERING Discipline:Structural <br /> Project No.:CN1117 Originator:A.Foster Date: 4/3/2019 <br /> Component:I Seismic Analysis Checked:W.Cullumber Date: 4/3/2019 <br /> Seismic Loading Analysis <br /> Reference: ASCE 7-10 <br /> The the tank will be required to be designed per the requirements of ASCE 7-10 Section 15.7. <br /> Where: <br /> Wj= Impulsive Weight <br /> W,= Portion of the liquid weight sloshing <br /> Vj= Impulsive Component <br /> V,=Convective Component <br /> Sai= Spectral Acceleration for Impulsive Components <br /> Sa,=Spectral Acceleration for Convective Components <br /> T,= Natural Period of the first(convective)mode of sloshing <br /> T,= Fundamental Period of the tank structure and impulsive component <br /> Cs=seismic response coefficient <br /> I= occupancy importance factor <br /> R= response modification factor <br /> Sos= design spectral response acceleration parameter in the short period range <br /> V= (V"+Vc)1/a <br /> Vi=Sai*Wi/(R/le) <br /> Vc=Sac%*Wc/(1.5) <br /> Now,per ASCE 7-10 Table 15.4-2 <br /> "All other self-supporting structures,tanks,or vessels..." <br /> R= 1.25 <br /> Oo= 2.0 <br /> Cd= 2.5 <br /> SOS= 0.606 g <br /> Sot= 0.362 g <br /> Ss= 0.760 g <br /> St= 0.303 g <br /> IQ 1.25 Risk Category III <br /> T,= 2.21 s <br /> T,= 0.11 s T,is assumed to equal Ta <br /> Ts= 0.60 s <br /> TL= 4.0 s Per ASCE 7-10,15.7.6.1 <br /> g= 32.2 ft/s' <br /> Find Structure Short Period per ASCE 11.4.5 <br /> T:=Sot/SDs <br /> Ts= 0.60 sec <br /> Criteria for"All Other Structures" <br /> C,= 0.02 <br /> X= 0.75 <br /> h= 10.00 ft <br /> 3 <br />