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NYC Building Code

§ 722.3.2.3 — § 722.3.2.3

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What is NYC BC § 722.3.2.3?

Quick Answer

This section outlines the calculation procedures for determining the fire-resistance rating of nonsymmetrical wall assemblies. The rating is based on the lower value from calculations performed assuming either side of the wall as the fire-exposed side, with specific exceptions for exterior walls. Applies to building owners with nonsymmetrical wall designs.

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

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722.3.2.3 Nonsymmetrical assemblies.

BC § 722.3.2.3

For a wall having no finish on one side or having different types or thicknesses of finish on each side, the calculation procedures of this section shall be performed twice, assuming either side of the wall to be the fire-exposed side. The fire-resistance rating of the wall shall not exceed the lower of the two values calculated. Exception: For exterior walls with a fire separation distance greater than 5 feet (1524 mm), the fire shall be assumed to occur on the interior side only.

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