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NYC Mechanical Code

§ 510.7.3 — § 510.7.3

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What is NYC MC § 510.7.3?

Quick Answer

This section mandates that hazardous exhaust duct systems penetrating fire-resistance-rated wall assemblies be enclosed in fire-resistance-rated construction from the point of penetration to the outlet terminal, unless equipped with an approved automatic fire suppression system. Applies to building owners managing hazardous exhaust systems.

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

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510.7.3 Wall assemblies.

MC § 510.7.3

Hazardous exhaust duct systems that penetrate fire-resistance-rated wall assemblies shall be enclosed in fire-resistance-rated construction from the point of penetration to the outlet terminal, except where the interior of the duct is equipped with an approved automatic fire suppression system. Ducts shall be enclosed in accordance with the New York City Building Code requirements for shaft construction and such enclosure shall have a minimum fire-resistance rating of not less than the highest fire-resistance-rated wall assembly penetrated.

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