A403.8 Horizontal diaphragms.
San Francisco Building Inspection Commission Codes · 2022 edition · updated 2026-08-28 · San Francisco
The diaphragm immediately above the target story shall be evaluated and/or strengthened as required by Bulletin Section A1.1. Rotational effects shall be accounted for when asymmetric wall stiffness increases shear demands.
Commentary: This revision is consistent with a change approved for the latest edition of IEBC. A403.9.1 Revise the provision as follows:
A403.9.1 Gypsum or cement plaster products. Gypsum or cement plaster products shall not be used to provide lateral resistance in a target story.
A404. Omit Section A404 entirely.
Commentary: Section A404 applies to two-story buildings only. Two-story buildings are exempt from SFEBC Chapter 5E. A405.1. Revise the provision as follows:
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