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625 Cypress Avenue <br />Geotechnical Investigation <br /> <br />Project No. W1895-88-01 - 9 - April 23, 2024 <br />ASCE 41-17 SITE-SPECIFIC SEISMIC DESIGN PARAMETERS <br />Parameter Value <br />Spectral Response Acceleration (short) SXS, BSE-2N 1.759g <br />Spectral Response Acceleration (1 sec) SX1, BSE-2N 1.188g <br />Spectral Response Acceleration (short) SXS, BSE-1N 1.172g <br />Spectral Response Acceleration (1 sec) SX1, BSE-1N 0.792g <br />Spectral Response Acceleration (short) SXS, BSE-2E 1.371g <br />Spectral Response Acceleration (1 sec) SX1, BSE-2E 0.905g <br />Spectral Response Acceleration (short) SXS, BSE-1E 0.808g <br />Spectral Response Acceleration (1 sec) SX1, BSE-1E 0.472g <br /> <br />6.3.5 Site-Specific Peak Ground Acceleration <br />The site-specific Maximum Considered Earthquake (MCEG) peak ground acceleration was evaluated in <br />accordance with ASCE 7-16 Section 21.5. The significant difference between the MCEG peak ground <br />acceleration and the analysis presented above is that the MCEG is calculated without the risk-targeted <br />adjustment factors. <br />The probabilistic and deterministic 84th percentile peak ground accelerations were analyzed using the <br />same approaches as described above. The analysis used the same Site Class and scenario earthquake. <br />However, within the probabilistic calculation, the risk-targeted adjustment factor was not applied. <br />The deterministic MCEG shall not be less than 0.5FPGA, where FPGA is determined from ASCE 7-16 Table <br />11.8-1 with the value of PGA taken as 0.5g. The site-specific MCEG peak ground acceleration is taken as <br />the lesser of the probabilistic and deterministic MCEG, provided the value is not less than 80 percent of <br />the value of PGAM as determined by ASCE 7-16 Equation 11.8.1. <br /> <br />