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• <br /> Seismic Design IBC 2018 <br /> Site Classification,Criteria Selection,&Minimum Design Lateral Force <br /> Risk Category II ASCE 7 T 1.5-1 <br /> Seismic Importance Factor IE 1.00 ASCE 7 T 1.5-2 <br /> Seismic Design Category D T1613.2.3(1)and(2) <br /> Site Class D ASCE 7 T 20.3-1 <br /> Short Period Acceleration Ss 1.31 USGS Seismic Design Maps Online <br /> 1-Second Acceleration Si 0.46 USGS Seismic Design Maps Online <br /> Seis.Force Resisting System A.15. ASCE 7 T 12.2-1 <br /> Response Modification Factor R 6.5 ASCE 7 T 12.2-1 <br /> Design Spectral Response Acceleration Parameters <br /> Site Coeffiecient,Fa 1.2 T1613.2.3(1) <br /> Site Coeffiecient,Fv N/A T1613.2.3(2) <br /> Substitute equations 16-36& 16-37 into 16-38& 16-39,respectively. <br /> S DS=3•F a S SDs= 1.04 EQ 16-38 <br /> SDI =�3•Fv•S1 SDI= N/A EQ 16-39 <br /> Seismic base shear ASCE 7 12.14.8.1 <br /> V=(F SDs/R)W Where: F=1.0 for(1)-story ASCE 7EQ 12.14-12 <br /> Vertical Distribution,Forces at each level ASCE 7 12.14.8.2 <br /> Fx=(wx/W)V Fx= 0.160 x wX ASCE 7EQ 12.14-13 <br /> Effective seismic weight&Forces(lbs)at Level x <br /> roof area(ft2) floor area(ft2) story height(ft) wall length(ft) <br /> Diaphragm(x=1) 728 0 8 52 wX <br /> Fx= 2080 weight(lbs) 10920 0 2080 13000 <br /> Version 7.0 Pg 2.1 <br />