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Seismic Design IBC 2003 <br />Site Clasification, Criteria Selection & Minimum Design Lateral Force 1615 1616 <br />1617 <br />Seismic Use Group I <br />1616.2 [326] <br />Seismic Importance Factor IE 1.00 <br />T1604.5[272] <br />Seismic Design Category D <br />1616.3 [326] <br />Site Class D <br />T1615.'1.1 [322] <br />Short Period Acceleration Ss 1.25 <br />F1615(1) [304] <br />1-Second Acceleration S, 0.4 <br />F1615(2) [304] <br />Seis. Force Resisting 'System 1. K. <br />T1617.6.2 [334] <br />Response Modification Factor R 6.5 <br />T1617.6.2 [334] <br />USGS Probabilistic Hazard Lookup Link http://eaint.er.usgs.gov/eci/html/zii)code.html <br />Design Spectral Response Acceleration Parameters 1615 1 213 [3221 <br />Site Coeffiecient, Fa 1.0 <br />T1615.1.2(1) [323] <br />Site Coeffiecient, Fv 1.6 <br />T1615.1.2(2) [323] <br />Substitute equations 16-38 & 16-39 into 16-40 & 16-41 respectively, <br />S DS = 3 • F a • S s SDS = 0.83 <br />EQ 16-38140 [322] <br />2 <br />S D1= 3 • F V'S 1 SDI = 0.43 <br />EQ 16-39141 [322] <br />Simplified analysis, Seismic base shear 1617.5 [3311 <br />1.2•S DS <br />V = W <br />EQ 16-56 [331] <br />R <br />Vertical Distribution, Forces at each level 1617 5 2 [3321 <br />1.2 •S DS <br />F X= Fx = 0.154 x wX <br />•w x <br />EQ 16-57 [332] <br />R <br />Ff pr.tiva_ sPismic wninhf R 9:nr--- 7nt. % —a. I -..-I .- <br />Diaphragm (x = 2) <br />Fx = 5308 <br />roof area (ft) <br />vfloor area (ftz) <br />story height (ft) <br />wall length (ft) <br />::34:5xO:O <br />1500 <br />8 <br />300 <br />weight (Ibs) <br />22500 <br />0 <br />12000 <br />Diaphragm (x'= 1) <br />Fx = 6462 <br />roof area (ft) <br />floor area (ft) <br />story height (ft) <br />I wall length (ft) <br />wX <br />240 <br />1290 <br />9 <br />300 <br />weight (Ibs) <br />3600 <br />12900 <br />13500 <br />42000 <br />Version 7.0 Pg 2.1 <br />