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Seismic Risk

A jurisdiction has high seismic risk if either of the following apply: 

  • High Seismic Risk – the jurisdiction is located in a county where the county or any portion thereof has a short-period response acceleration greater than or equal to 0.50g for site class B according to Figure 1613.2.1(1) in the 2015 IBC, or
  • Residential High Seismic Risk – the jurisdiction is located in a county where the county or any portion thereof falls within Seismic Design Categories D0, D1, D2, or E for site class D according to 2015 IRC Figure R301.2(2).
Last updated May 11, 2021