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NYC Building Code

§ 2303.2.5.1 — § 2303.2.5.1

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What is NYC BC § 2303.2.5.1?

Quick Answer

This section outlines the requirements for determining the effects of treatment and redrying methods on the flexure properties of fire-retardant-treated softwood plywood, as per ASTM D 5516. It mandates manufacturers to publish allowable maximum loads and spans for their treated plywood used as floor and roof sheathing. Applies to manufacturers of wood structural panels.

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

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2303.2.5.1 Wood structural panels.

BC § 2303.2.5.1

The effect of treatment and the method of redrying after treatment, and exposure to high temperatures and high humidities on the flexure properties of fire-retardant-treated softwood plywood shall be determined in accordance with ASTM D 5516. The test data developed by ASTM D 5516 shall be used to develop adjustment factors, maximum loads and spans, or both, for untreated plywood design values in accordance with ASTM D 6305. Each manufacturer shall publish the allowable maximum loads and spans for service as floor and roof sheathing for its treatment.

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