Chapter 22 — STEEL

Section 2208 — STEEL DECK

2025 California Building Code (Title 24, Part 2) · 2025 edition · ingested 2026-07-07 · California

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2208.1 Steel decks.

2208.1 Steel decks. The design and construction of cold-formed steel floor and roof decks and composite slabs of concrete and steel deck shall be in accordance with SDI SD. The design of cold-formed steel diaphragms shall be in accordance with additional provisions of AISI S310, as applicable. [OSHPD 1R, 2 & 5] The base material thickness of the steel deck shall not be less than 0.0359 inch (0.9 mm) (20 gage). Exception: For single-story, nonbuilding structures similar to buildings, the minimum deck thickness need not apply if the steel roof deck is not being used as the diaphragm and there…