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NYC Building Code

§ 722.3.4 — § 722.3.4

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What is NYC BC § 722.3.4?

Quick Answer

This section outlines the fire-resistance ratings for concrete masonry lintels based on their nominal thickness and the minimum concrete cover over the main reinforcing bars. The ratings can be determined using Table 722.3.4 or approved alternate methods. Applies to building owners involved in construction or renovation projects requiring compliance with fire safety standards.

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

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722.3.4 Concrete masonry lintels.

BC § 722.3.4

Fire-resistance ratings for concrete masonry lintels shall be determined based upon the nominal thickness of the lintel and the minimum thickness of concrete masonry or concrete, or any combination thereof, covering the main reinforcing bars, as determined in accordance with Table 722.3.4, or by approved alternate methods. Table 722.3.4Minimum Cover of Longitudinal Reinforcement in Fire-Resistance-Rated Reinforced Concrete Masonry Lintels (inches) Nominal Width of Lintel (inches)Fire-Resistance Rating (hours)1 2 34 6 1 1/22 — — 8 1 1/21 1/21 3/43 10 or greater1 1/21 1/2 1 1/21 3/4 For SI: 1 inch = 25.4 mm.

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