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Design Maps Detailed Report <br />Section 11.6 — Seismic Design Category <br />Page 6 of 6 <br />Table 11.6-1 Seismic Design Category Based on Short Period Response Acceleration Parameter <br />VALUE OF SDs <br />RISK CATEGORY <br />I or II <br />III <br />IV <br />SDs < 0.167g <br />A <br />A <br />A <br />0.167g <_ SDs < 0.33g <br />B <br />B <br />C <br />0.33g <_ SDs < 0.509 <br />C <br />C <br />D <br />0.509 <_ SDs <br />D <br />D <br />D <br />For Risk Category = I and Sos = 0.985 g, Seismic Design Category = D <br />Table 11.6-2 Seismic Design Cateqory Based on 1-S Period Response Acceleration Parameter <br />VALUE OF SDI <br />RISK CATEGORY <br />I or II <br />III <br />IV <br />SDI < 0.067g <br />A <br />A <br />A <br />0.067g <_ SDI < 0.133g <br />B <br />B <br />C <br />0.133g <_ SDI < 0.20g <br />C <br />C <br />D <br />0.20g <_ SDI <br />D <br />D <br />D <br />For Risk Category = I and So, = 0.540 g, Seismic Design Category = D <br />Note: When S, is greater than or equal to 0.75g, the Seismic Design Category is E for <br />buildings in Risk Categories I, II, and III, and F for those in Risk Category IV, irrespective <br />of the above. <br />Seismic Design Category = "the more severe design category in accordance with <br />Table 11.6-1 or 11.6-2" = D <br />Note: See Section 11.6 for alternative approaches to calculating Seismic Design Category. <br />References <br />1. Figure 22-1: <br />https:Hearthquake.usgs.gov/hazards/designmaps/downloads/pdfs/2010_ASCE-7_Figure_22-1.pdf <br />2. Figure 22-2: <br />https:Hearthquake.usgs.gov/hazards/designmaps/downloads/pdfs/2010_ASCE-7_Figure_22-2.pdf <br />3. Figure 22-12: <br />https:Hearthquake.usgs.gov/hazards/designmaps/downloads/pdfs/2010_ASCE-7_Figure_22- <br />12. pdf <br />4. Figure 22-7: <br />https:Hearthquake.usgs.gov/hazards/designmaps/downloads/pdfs/2010_ASCE-7_Figure_22-7.pdf <br />5. Figure 22-17: <br />https:Hearthquake.usgs.gov/hazards/designmaps/downloads/pdfs/2010_ASCE-7_Figure_22- <br />17. pdf <br />6. Figure 22-18: <br />https:Hearthquake.usgs.gov/hazards/designmaps/downloads/pdfs/2010_ASCE-7_Figure_22- <br />18. pdf <br />https://prod01-earthquake. cr. usgs. gov/desig nma ps/us/re po rt. php?template=minimal&latitude=33.775505&I... 10/25/2018 <br />