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NYC Building Code

§ 910.3.3 — § 910.3.3

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What is NYC BC § 910.3.3?

Quick Answer

This section outlines the calculation methods for determining the required aggregate area of smoke and heat vents in buildings. For sprinklered buildings, the vent area is based on the volume of the area needing smoke removal, while for unsprinklered buildings, it is based on the floor area. Applies to building owners responsible for compliance with smoke and heat vent regulations.

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

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910.3.3 Smoke and heat vents area.

BC § 910.3.3

The required aggregate area of smoke and heat vents shall be calculated as follows: For buildings equipped throughout with an automatic sprinkler system in accordance with Section 903.3.1.1: A VR = V/9000 (Equation 9-2) where: A VR = The required aggregate vent area (ft 2 ). V = Volume (ft 3 ) of the area that requires smoke removal. For unsprinklered buildings: A VR = A FA /50 (Equation 9-3) where: A VR = The required aggregate vent area (ft 2 ). A FA = The area of the floor in the area that requires smoke removal.

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