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NYC Building Code

§ 1503.4.1 — § 1503.4.1

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What is NYC BC § 1503.4.1?

Quick Answer

This section mandates the installation of secondary (emergency overflow) roof drains or scuppers when roof drains are required. These provisions are necessary to prevent water entrapment in cases where primary drains fail. Applies to building owners responsible for roof drainage systems.

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

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1503.4.1 Secondary (emergency overflow) drains or scuppers.

BC § 1503.4.1

Where roof drains are required, secondary (emergency overflow) roof drains or scuppers shall be provided where the roof perimeter construction extends above the roof in such a manner that water will be entrapped if the primary drains allow buildup for any reason. The installation and sizing of secondary (emergency overflow) drains, leaders and conductors shall comply with Chapter 11 of the New York City Plumbing Code, as applicable.

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