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61512018 Design Maps Detailed Report <br />Section 11.8.3 - Additional Geotechnical Investigation Report Requirements for Seismic Design <br />Categories D through F <br />From Egure 22, t4l PGA = 0. s86 <br />Equation ( 11.8-1):PGA, = f,"oP64 = 1.000 x 0.586 = 0.586 g <br />Table 11.8-1: Site Coefficient Fe6a <br />Mapped MCE Geometric Mean Peak Ground Acceleration, PGASite <br />Class <br />PGA S <br />0. 10 <br />PGA = <br />0.20 0.30 <br />PGA = <br />0.40 <br />PGA > <br />0.50 <br />B <br />c <br />D <br />E <br />F <br />0.8 <br />1.0 <br />7.2 <br />1.6 <br />2.5 <br />0.8 <br />1.0 <br />1.0 <br />0,8 0.8 0.8 <br />1.0 1.0 1.0 <br />1.2 1.1 1.0 <br />L.4 r.2 1.1 <br />1.7 1.2 0.9 <br />See Section 11.4.7 of ASCE 7 <br />1.0 <br />0.9 <br />For Site Class = D and PGA = O.5a6 g, F,o^ = 1.OOO <br />Section 27.2.1.L - Method 1 (from Chapter 21 - Site-Specific Ground Motion Procedures for <br />Seismic Design) <br />From Elgure 22-17 (sl Cps = 0.977 <br />From Eigure 22-18 t6r Cnr = 1 013 <br />Note: Use straight-ljne interpolation for intermediate values of PGA