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5/9/24, 4:41 PM ATC Hazards by Location <br />https://hazards.atcouncil.org/#/seismic?lat=33.7562603&lng=-117.8800077&address=1311 N TOWNER ST. SANTA ANA CA 92706 1/2 <br />This is a beta release of the new ATC Hazards by Location website. Please contact us with feedback. <br />The ATC Hazards by Location website will not be updated to support ASCE 7-22. Find out why. <br />Hazards by Location <br />Search Information <br />Address:1311 N TOWNER ST. SANTA ANA CA 92706 <br />Coordinates:33.7562603, -117.8800077 <br />Elevation:115 ft <br />Timestamp:2024-05-09T13:41:14.381Z <br />Hazard Type:Seismic <br />Reference Document:ASCE7-16 <br />Risk Category:II <br />Site Class:D-default <br />Basic Parameters <br />Name Value Description <br />SS 1.308 MCER ground motion (period=0.2s) <br />S1 0.466 MCER ground motion (period=1.0s) <br />SMS 1.57 Site-modified spectral acceleration value <br />SM1 * null Site-modified spectral acceleration value <br />SDS 1.047 Numeric seismic design value at 0.2s SA <br />SD1 * null Numeric seismic design value at 1.0s SA <br />* See Section 11.4.8 <br />Additional Information <br />Name Value Description <br />SDC * null Seismic design category <br />Fa 1.2 Site amplification factor at 0.2s <br />Fv * null Site amplification factor at 1.0s <br />CRS 0.929 Coefficient of risk (0.2s) <br />CR1 0.925 Coefficient of risk (1.0s) <br />PGA 0.553 MCEG peak ground acceleration <br />FPGA 1.2 Site amplification factor at PGA <br />PGAM 0.663 Site modified peak ground acceleration <br />TL 8 Long-period transition period (s) <br />SsRT 1.308 Probabilistic risk-targeted ground motion (0.2s) <br />SsUH 1.409 Factored uniform-hazard spectral acceleration (2% probability of <br />exceedance in 50 years) <br />SsD 1.584 Factored deterministic acceleration value (0.2s) <br />S1RT 0.466 Probabilistic risk-targeted ground motion (1.0s) <br />S1UH 0.504 Factored uniform-hazard spectral acceleration (2% probability of <br />exceedance in 50 years) <br />S1D 0.6 Factored deterministic acceleration value (1.0s) <br />PGAd 0.655 Factored deterministic acceleration value (PGA) <br />* See Section 11.4.8 <br />The results indicated here DO NOT reflect any state or local amendments to the values or any delineation lines made during the building code adoption process. Users should confirm any <br />output obtained from this tool with the local Authority Having Jurisdiction before proceeding with design. <br />115 ft <br />Map data ©2024 Google, INEGI <br />1311 N Towner St <br />9/24/2024