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NYC Building Code

§ 427.7.5 — § 427.7.5

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What is NYC BC § 427.7.5?

Quick Answer

This section regulates the maximum allowable quantity of water reactive material within laboratory units, setting a limit of 2.5 pounds, which can increase to 5 pounds if the unit is constructed with 2-hour fire-rated materials. Applies to laboratory operators managing hazardous materials.

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

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427.7.5 Water reactive material.

BC § 427.7.5

The total quantity of water reactive material allowed within a laboratory unit, excluding any quantities in a storage room, shall not exceed 2.5 pounds (1.1 kg). Exception: The total quantity of water-reactive material allowed within a laboratory unit that is provided with walls, floors and ceilings that separate the laboratory unit from all adjoining areas by 2-hour fire-rated construction shall not exceed 5 pounds (2.3 kg).

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