41 C.F.R. § 128-1.8005
(a) To meet the building and construction requirements of this subpart, the Department, except as noted, adopts as its seismic safety standards the seismic safety levels set forth in the model building codes that the Interagency Committee on Seismic Safety in Construction (ICSSC) recognizes and recommends as appropriate for implementing the Executive Order. The ICSSC, as of the date of this rule, recognizes and recommends:
(b) The seismic design and construction of a covered building shall conform to the model code applicable in the locality where the building is constructed, unless: