Building Code Guide 17-11: Seismic Certification
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Source: Building Code Guide 17-11: Seismic Certification ↗ Last modified: Sun, 19 Apr 2026 20:06:28 GMT
Building Code Guides (BCGs) and Building Official Determinations (BODs) provide answers about the application of building codes and outline optional alternates. BODs are typically smaller in scope and address simpler questions. Code Guides provide a comprehensive alternative to a complicated set of code requirements.
BCG 17-11: Seismic Certification
QUESTION 1: OSSC Sections 1705.11 and 1705.12 require seismic certification and special inspections for Designated Seismic Systems. What are the submittal requirements for mechanical, electrical and plumbing components of designated seismic systems and what are the methods of certification?
RESPONSE 1: OSSC Section 1705.12 requires seismic certification of a Designated Seismic System to be in accordance with Section 13.2 of ASCE/SEI 7-10. Special inspection is required for all Designated Seismic Systems in accordance with OSSC 1705.11.4. Seismic certification of mechanical, electrical, and plumbing components of Designated Seismic Systems are applicable only for structures in Risk Categories III and IV as listed in OSSC Table 1604.5. These requirements apply only to new construction or the installation of new equipment that is part of a designated seismic system.