Laserfiche WebLink
1 Jan 2019 01:07:10-Lateral Analysis.sm <br /> New Roof Seismic (per ASCE 7-10, 12.8) LRFD <br /> Basic Parameters <br /> Equivalent Lateral Force Procedure (ELFP) <br /> Site class: D <br /> Seismic design category: D <br /> Cantilevered Columns <br /> I :=1.0 Seismic importance factor (ref. table 1.5-2) <br /> SDS :=0. 901 Design spectral acceleration parameter (ref. USGS summary report) <br /> R :=1. 5 Response modification factor - cantilevered column (ref. table 12.2-1) <br /> S2o <br /> :=2.5 System overstrength factor (ref. table 12.2-1) <br /> Cd :=3.25 Deflection amp. factor (ref. table 12.2-1) <br /> p :=1.0 Redundancy factor (ref section 12.3.4) <br /> SDS <br /> C := <br /> —0. 6007 Seismic resonse coefficient <br /> 1 I <br /> SD] :=0.513 S1 :=0.513 < 0.6g therefore 12.8-6 does not apply <br /> hn :=hrf=8 ft Highest level of structure <br /> hin :=10 rt Interior wall height <br /> Ct :=0.02 x :=0.'75 Table 12.8-2 <br /> x <br /> h <br /> Ta :=,t • f t =0.0951 EQ 12.8-7 <br /> SDI <br /> C _smax •— ((( R l Csmax =3.5948 <br /> Ta • s <br /> Cs <br /> min <br /> cs :=max Csmax C =0. 6007 <br /> 0.01 <br /> 0.44 •SDS <br /> fs� <br /> Cs min •=max 0 5 .s Cs min =0.2643 EQ 12.8-5, EQ 12.8-6 <br /> — 1 <br /> ( R <br /> Cs :=p •Cs Cs =0. 6007 <br />