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NYC Building Code

§ 722.5.2.2.1 — § 722.5.2.2.1

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What is NYC BC § 722.5.2.2.1?

Quick Answer

This section outlines the minimum thickness requirements for fire protection materials applied to substitute beams or girders. It specifies conditions such as weight-to-heated-perimeter ratios and minimum beam ratings. Applies to building owners involved in structural steel construction and fire safety compliance.

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

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722.5.2.2.1 Minimum thickness.

BC § 722.5.2.2.1

The use of Equation 7-17 is subject to the following conditions: 1. The weight-to-heated-perimeter ratio for the substitute beam or girder (W2 /D 2 ) shall be not less than 0.37.

2.The thickness of fire protection materials for the substitute beam or girder (T1 ) shall be not less than 3/8 inch (9.5 mm).

3.The unrestrained or restrained beam rating shall be not less than 1 hour.

4.Where used to adjust the material thickness for a restrained beam, the use of this procedure is limited to structural steel sections classified as compact in accordance with AISC 360.

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