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Project No.: 2157-S <br />1433 Cypress Ave, Santa Ana <br />The project site is classified as Site Class F. However, in accordance with the <br />20.3.1, ASCE/SEI 7-16, as the proposed structure has a fundamental period c <br />CITY OF SANTA ANA <br />Plangi@Wt)dBuilding Agency <br />Approved <br />FOR PERMIT ISSUANCE <br />rVection <br />n less than <br />0.5 second, the site -response analysis is not required to determine spectrAl acceleration for <br />liquefaction soils and a Site Class is permitted to be determined in accordance with Section 20.3 <br />and the corresponding values of Fa and Fv from Table 11.4-1 and 11.4-2. <br />Based on 2022 California Building Code and ASCE/SEI 7-16, the site is classified as Site Class D <br />and the following seismic design parameters are applicable: <br />SEISMIC COEFFICIENTS (2022 California Building Code) <br />Nature of Occupancy <br />II <br />Table 1604.5, CBC 2019 <br />Importance Factors <br />1.0 <br />(Table 1.5-2 ASCE 7-16) <br />Short Period (0.2s) <br />One -Second Period <br />Earth Materials and Site Class <br />Alluvium — So <br />(Table 20.3-1 ASCE 7-16) <br />Mapped Maximum Considered Earthquake <br />(MCE) Spectral Response Acceleration <br />Ss = 1.283 (g) <br />Si = 0.459 (g) <br />(Figures 22-1 through 22-8, ASCE 7-16) <br />Site Coefficients <br />Fa = 1.0 <br />Fv = 1.9 <br />(Table 11.4-1 and 11.4-2, ASCE 7-16) <br />Adjusted MCE Spectral Response <br />Acceleration <br />SMs = 1.283 (g) <br />SM, = 1.309 (g) <br />(Equations 11.4-1 and 11.4-2, ASCE 7-16 <br />Design Acceleration <br />Sos = 0.855 (g) <br />So, = 0.872 (g) <br />(Equations 11.4-3 and 11.4-4, ASCE 7-16) <br />Seismic Design Category <br />D <br />(Table 11.6-1 and 11.6-2, ASCE 7-16) <br />A ground motion hazard analysis is not required where the value of the parameter SM, determined <br />by Eq. (11.4-2) is increased by 50% for all applications of SM, in this Standard. The resulting value <br />of the parameter So, determined by Eq. (11.4-4) shall be used for all applications of Sol in this <br />Standard. <br />PACIFIC GEOTECH, INC. <br />