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CBC 1613 — Marin Seismic Design

Updated May 18, 2026
Earthquake design forces per ASCE 7-16 Ch. 11-12 with Marin County mapped accelerations (Ss roughly 1.5-2.0g, S1 roughly 0.6-0.9g).

CBC 1613 requires seismic design of structures in Marin County per ASCE 7-16. Mapped accelerations vary across the county: highest near the San Andreas fault trace (Point Reyes, Olema) with Ss up to 2.0g; coastal and bay-front sites typically Ss 1.5-1.8g. Site class determination per ASCE 7-16 Ch. 20 is mandatory; soft sites (Class E, F) require site-specific response analysis.

TAGS
marinCBCseismicASCE-7San-Andreas
DETAILS
edition
2022
adopted by
["ca-marin","ca-marin-county"]
code system
CBC
confidence tier
primary
jurisdiction label
Marin County, CA
SOURCES
🔗https://codes.iccsafe.org/codes/california/CABC2022P1
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