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St. Barbara Catholic School <br />Project No.: D-6289-01 <br />Seismic Factors <br />The following are the geotechnical parameters for earthquake design <br />CITY OF SANTA ANA <br />Planning and Building Agency <br />may, lS. <br />Approved <br />FOR PERMIT ISSUANCE <br />Master ID. <br />P ac­ <br />with ASCE 7-16, and the latest CBC 2022. The details are presented in pp <br />Structures on Site Class D with Si greater than or equal to 0.2 and a ground motion <br />hazard analysis is not required where the value of the parameter, SMI determined by Eq. <br />(11.4-2) is increased by 50% for all applications and the resulting value of the parameter <br />SDi determined by Eq. (11.4-4) shall be used for all applications of SDI in this standard <br />(ASCE 7-16, Supplement 3). <br />Latitude: 33.73716" and Longitude:-117.93881' <br />NO. <br />PARAMETERS <br />VALUES <br />REFERENCE <br />1 <br />0.2-Second Mapped Spectral Response <br />1.335g <br />ASCE 7-16 <br />Accelerations, SS (MCER Ground Motion) <br />2 <br />1-Second Mapped Spectral Response <br />0.477g <br />ASCE 7-16 <br />Accelerations, S1(MCER Ground Motion) <br />3 <br />Site Class Default <br />D <br />ASCE 7-16 <br />4 <br />Site Amplification Factor at 0.2 sec, Fa <br />1.2 <br />ASCE 7-16 <br />According to Section 11.4.4, Fa should not be <br />1.2 <br />Use <br />less than 1.2 <br />5 <br />Site Amplification Factor at 1.0 sec, Fv <br />Null <br />ASCE 7-16 <br />however, according to Table 11.4.2, Fv <br />1.823 <br />Use <br />should be 1.823 <br />6 <br />Site Modified Spectral Acceleration Value, <br />1.602g <br />ASCE 7-16 <br />SMs <br />1.602g <br />Use <br />SMs = Fa SS = 1.2 x 1.335 = 1.602 <br />10 <br />