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USGS Response Spectra (mapped)Conterminous 48 States <br />2003 NEHRP Seismic Design Provisions <br />Latitude = 33.76184 <br />Longitude = -117.90094999999998 <br />Spectral Response Accelerations Ss and Sl <br />Ss and sl = Mapped Spectral Acceleration Values <br />Site Class B -Fa = 1.0 ,Fv = 1.0 <br />Data are based on a 0.01 deg grid spacing <br />Period Sa <br />(sec)(g) <br />0.2 <br />1.0 <br />1.389 (Ss, Site Class B) <br />0.495 (Sl, Site Class B) <br />Conterminous 48 States <br />2003 NEHRP Seismic Design Provisions <br />Latitude = 33.76184 <br />Longitude = -117.90094999999998 <br />Spectral Response Accelerations SMs and SM1 <br />SMs = Fa x Ss and SM1 = Fv x Sl <br />Site Class D -Fa = 1.0 ,Fv = 1.505 <br />Period sa <br />(sec) (g) <br />0.2 1.389 (SMS, Site Class D) <br />1.0 0.745 (SM1, Site Class D) <br />Conterminous 48 States <br />2003 NEHRP Seismic Design Provisions <br />Latitude = 33.76184 <br />Longitude = -117.90094999999998 <br />Design Spectral Response Accelerations Sos and sol <br />SDs = 2/3 x SMs and SD1 = 2/3 x SM1 <br />Site Class D -Fa = 1.0 ,Fv = 1.505 <br />Period sa <br />(sec) (g) <br />0.2 0.926 (SDs, Site Class D) <br />1.0 0.497 (SD1, Site Class D) <br />Page 1