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What is NYC BC § 406.5.2.1?

Quick Answer

This section establishes requirements for openings below grade that provide natural ventilation. It specifies that the outside horizontal clear space must be 1 1/2 times the depth of the opening and maintained from grade down to the bottom of the lowest required opening. Applies to building owners managing properties with such openings.

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

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406.5.2.1 Openings below grade.

BC § 406.5.2.1

Where openings below grade provide required natural ventilation, the outside horizontal clear space shall be 1 1/2 times the depth of the opening. The width of the horizontal clear space shall be maintained from grade down to the bottom of the lowest required opening.

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