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NYC Building Code

§ 2303.2 — § 2303.2

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What is NYC BC § 2303.2?

Quick Answer

This section defines fire-retardant-treated wood as wood products that meet specific flame spread index criteria when tested according to ASTM E 84 or UL 723. The definition includes parameters for flame spread and combustion evidence. Applies to manufacturers and users of treated wood products in building construction.

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

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2303.2 Fire-retardant-treated wood.

BC § 2303.2

Fire-retardant-treated wood is any wood product which, when impregnated with chemicals by a pressure process or other means during manufacture, shall have, when tested in accordance with ASTM E 84 or UL 723, a listed flame spread index of 25 or less and show no evidence of significant progressive combustion when the test is continued for an additional 20-minute period. Additionally, the flame front shall not progress more than 10 1/2 feet (3200 mm) beyond the centerline of the burners at any time during the test.

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