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625 Cypress Avenue <br />Geotechnical Investigation <br /> <br />Project No. W1895-88-01 - 8 - April 23, 2024 <br />are not less than 80 percent of the modified General Design Response Spectrum determined by ASCE <br />7-16 Section 11.4.6 with Fa and Fv determined as specified in Section 21.3. <br />Graphical representations of the analyses are presented on Figures 6 and 7. The Site-Specific Design <br />Earthquake response spectrum at 5 percent damping is presented on Figure 7 and in tabular form on <br />Figure 8. <br />6.3.4 Site-Specific Seismic Design Criteria <br />Based the site-specific ground motion hazard analysis performed, and in accordance with the ASCE <br />7-16 Section 21.4 and ASCE 41-17 Section 2.4.2, site-specific design acceleration parameters shall be <br />derived using the results of the site-specific ground motion hazard analysis. <br />The parameter SDS shall be taken as equal to 90 percent of the maximum spectral acceleration <br />obtained from the site-specific analysis at any period within the range from 0.2 to 5 seconds, <br />inclusive. The parameter SD1 shall be taken as the maximum value of the product of the spectral <br />acceleration and period for periods from 1 to 5 seconds, inclusive. The values of SMS and SM1 shall be <br />taken as 1.5 times the site-specific values of SDS and SD1. The site-specific design acceleration <br />parameters shall not be less than 80 percent of the general seismic design values determined by ASCE <br />7-16 Section 11.4. <br />The following tables presents the site-specific seismic design parameters based on the site-specific <br />ground motion hazard analysis. <br />SITE-SPECIFIC DESIGN ACCELERATION PARAMETERS <br />Parameter Value <br />Site Class Modified MCER <br />Acceleration (short), SMS 1.759g <br />R <br />Acceleration – (1 sec), SM1 1.188g <br />Spectral Response Acceleration (short), SDS 1.172g <br />Spectral Response Acceleration (1 sec), SD1 0.792g <br /> <br /> <br />