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NYC Building Code

§ 722.4.1.4 — § 722.4.1.4

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What is NYC BC § 722.4.1.4?

Quick Answer

This section outlines the calculation procedures for determining the fire resistance of nonsymmetrical wall assemblies. It requires evaluations to be performed twice, treating each side as the fire-exposed side, and the lower value of the two is to be used. Applies to building owners with nonsymmetrical wall constructions.

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

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722.4.1.4 Nonsymmetrical assemblies.

BC § 722.4.1.4

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 to be the fire-exposed side of the wall. The fire resistance of the wall shall not exceed the lower of the two values determined. Exception: For exterior walls with more than 5 feet (1524 mm) of horizontal separation, the fire shall be assumed to occur on the interior side only.

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