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NYC Building Code

§ 1011.4 — § 1011.4

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What is NYC BC § 1011.4?

Quick Answer

This section outlines the specifications for walklines on winder treads in stairways, requiring that the walkline be concentric to the direction of travel and positioned 12 inches from the narrower side of the winders. Applies to building owners involved in stairway construction and renovations.

General informational summary. Not legal advice for your situation. Consult an attorney before acting on any specific matter.

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1011.4 Walkline.

BC § 1011.4

The walkline across winder treads shall be concentric to the direction of travel through the turn and located 12 inches (304.8 mm) from the side where the winders are narrower. The 12-inch (304.8 mm) dimension shall be measured from the widest point of the clear stair width at the walking surface of the winder. Where winders are adjacent within the flight, the point of the widest clear stair width of the adjacent winders shall be used.

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