2025 California Standards for Accessible Design Guide (effective January 1, 2026)
1011.5 Stair treads and risers.
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1011.5.2 Riser height and tread depth.
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Exceptions:
4. ... [DSA-AC] For applications listed in Section 1.9.1 regulated by the Division of the State Architect-Access Compliance, see Chapter 11B, Section 11B-202.
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