2019 California Standards for Accessible Design Guide (effective January 1, 2020 with July 1, 2021 amendments)
ETA Editor's Note
In 2019 CBC, DSA-AC has not indicated adoption of the definition for Winder, but the wording of the Exception at Section 11B-504.2 appears to make its adoption necessary:
WINDER. A tread with nonparallel edges.
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