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Section 1613.3.5 — Determination of seismic design category <br /> TABLE 1613.3.5(1) <br /> SEISMIC DESIGN CATEGORY BASED ON SHORT-PERIOD(0.2 second) RESPONSE ACCELERATION <br /> RISK CATEGORY <br /> VALUE OF Sos <br /> I or II III IV <br /> SDS < 0.167g A A A <br /> 0.167g <_ SDS < 0.33g B B C <br /> 0.33g 5 SDs <0.50g C C D <br /> 0-509 :5 SDS D D D <br /> For Risk Category =I and SDS = 0.934 g, Seismic Design Category = D <br /> TABLE 1613.3.5(2) <br /> SEISMIC DESIGN CATEGORY BASED ON 1-SECOND PERIOD RESPONSE ACCELERATION <br /> RISK CATEGORY <br /> VALUE OF SDI <br /> I or II III IV <br /> SDI < 0.067g A A A <br /> 0.067g <_ SDI < 0.133g B B C <br /> 0.133g <_ SDI < 0.20g C C D <br /> 0.20g :5 SDI D D D <br /> For Risk Category = I and SDI = 0.532 g, Seismic Design Category =D <br /> Note: When S, is greater than or equal to 0.758, 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 of <br /> the above. <br /> Seismic Design Category =_ "the more severe design category in accordance with <br /> Table 1613.3.5(1) or 1613.3.5(2)" = D <br /> Note: See Section 1613.3.5.1 for alternative approaches to calculating Seismic Design <br /> Category. <br /> References <br /> 1. Figure 1613.3.1(1): http://earthquake.usgs.gov/hazards/designmaps/downloads/pdfs/IBC-2012-Figl6l3p3pl(l).pdf <br /> 2. Figure 1613.3.1(2): http://earthquake.usgs.gov/hazards/desigrimaps/downloads/pdfs/IBC-2012-Fig1613p3p1(2).pdf <br />