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NYC Building Code

§ 1203.5.1.3.1 — § 1203.5.1.3.1

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What is NYC BC § 1203.5.1.3.1?

Quick Answer

This section establishes the minimum requirements for openable areas to the outdoors in ventilated spaces. It specifies that the openable area must be at least 5 percent of the floor area and that every window or skylight must provide a minimum of 3 square feet, with at least 1.5 square feet being openable. Applies to building owners ensuring compliance with ventilation standards.

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

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1203.5.1.3.1 Minimum opening.

BC § 1203.5.1.3.1

The minimum openable area to the outdoors shall be 5 percent of the floor area of the space being ventilated. Every window or skylight providing required natural ventilation shall be at least 3 square feet (0.28 m 2 ) providing a minimum of 1 1/2 square feet (0.14 m 2 ) of openable area.

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