Step Markings (§ 2.2.1) – winding stairs Q – How do I mark winding stairs in an older, existing building?
A – Winders cannot physically be marked with side edge markers owing to the geometry of the steps. Therefore, the winders must be marked for the full leading edge per § 2.2.1 exception 1. Additionally, if the winders steps are preceded or followed by straight run steps, then the straight run steps cannot be marked with side edge markers because the result would not be “consistent and uniform throughout the same exit” as required by § 2.2.1. Therefore, the straight run steps in the same exit must also be marked for the full leading edge per § 2.2.1 exception 1.
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