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NYC Building Code

§ 722.2.4 — § 722.2.4

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What is NYC BC § 722.2.4?

Quick Answer

This section outlines the requirements for concrete columns, specifying minimum dimensions based on fire-resistance ratings and types of concrete. The statute provides a table detailing these dimensions and allows for reductions under certain conditions. Applies to building owners involved in the construction or renovation of structures.

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

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722.2.4 Concrete columns.

BC § 722.2.4

Concrete columns shall comply with this section. Table 722.2.4Minimum Dimension of Concrete Columns (inches) Types of Concrete Fire-Resistance Rating (hours)11 1/22 a3 a4 bSiliceous8910 12 14Carbonate8 9 10 11 12 Sand-lightweight8 8 1/29 10 1/212 For SI: 1 inch = 25 mm. a. The minimum dimension is permitted to be reduced to 8 inches for rectangular columns with two parallel sides at least 36 inches in length. b. The minimum dimension is permitted to be reduced to 10 inches for rectangular columns with two parallel sides at least 36 inches in length.

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