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CITY OF SANTA ANA <br />4/18/25, 9:52 AM U.S. Seismic Design Maps <br />Planning and Building Agency <br />USGS web services were down for some period of time and as a result this tool wasn't operational, resulting in <br />USGS web services are now operational so this tool should work as expected. <br />1601-1607 N. Bristol Street, Santa Ana <br />Latitude, Longitude: 33.7588,-117.8847 <br />W 17th St W 17th St <br />Z Z <br />W � <br />N <br />(,Santa Ana College I McDonald's <br />I <br />Go gle Campus Dr <br />Date <br />Design Code Reference Document <br />Risk Category <br />Site Class <br />Type <br />Value <br />Ss <br />1.314 <br />S1 <br />0.468 <br />SMs <br />1.314 <br />SMI <br />null -See Section 11.4.E <br />SDS <br />0.876 <br />SDI <br />null -See Section 11.4.8 <br />Type <br />Value <br />SDC <br />null -See Section 11.4.8 <br />Fa <br />1 <br />Fv <br />null -See Section 11.4.8 <br />PGA <br />0.556 <br />FPGA <br />1.1 <br />PGAM <br />0.612 <br />T, <br />8 <br />SsRT <br />1.314 <br />SsUH <br />1.417 <br />SsD <br />1.63 <br />S1RT <br />0.468 <br />S1UH <br />0.506 <br />S1D <br />0.6 <br />PGAd <br />0.673 <br />PGAOH <br />0.556 <br />CRS <br />0.928 <br />CR1 <br />0.924 <br />Cv <br />1.363 <br />it error. <br />Approved <br />FATPI ANCE <br />Master ID: <br />Date: <br />W 17th St <br />o �Q <br />cn - <br />Newsong Church 10ten <br />o -n <br />0 <br />CL m .- <br />< 3 <br />M <br />Cn <br />W 15th St <br />4/18/2025, 9:52:22 AM <br />ASCE7-16 <br />II <br />D - Stiff Soil <br />Description <br />MCER ground motion. (for 0.2 second period) <br />MCER ground motion. (for 1.0s period) <br />Site -modified spectral acceleration value <br />Site -modified spectral acceleration value <br />Numeric seismic design value at 0.2 second SA <br />Numeric seismic design value at 1.0 second SA <br />Description <br />Seismic design category <br />Site amplification factor at 0.2 second <br />Site amplification factor at 1.0 second <br />MCER peak ground acceleration <br />Site amplification factor at PGA <br />Site modified peak ground acceleration <br />Long -period transition period in seconds <br />Probabilistic risk -targeted ground motion. (0.2 second) <br />Factored uniform -hazard (2% probability of exceedance in 50 years) spectral acceleration <br />Factored deterministic acceleration value. (0.2 second) <br />Probabilistic risk -targeted ground motion. (1.0 second) <br />Factored uniform -hazard (2% probability of exceedance in 50 years) spectral acceleration. <br />Factored deterministic acceleration value. (1.0 second) <br />Factored deterministic acceleration value. (Peak Ground Acceleration) <br />Uniform -hazard (2% probability of exceedance in 50 years) Peak Ground Acceleration <br />Mapped value of the risk coefficient at short periods <br />Mapped value of the risk coefficient at a period of 1 s <br />Vertical coefficient <br />Map data 02025 <br />https://www.seismicmaps.org <br />1/2 <br />