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Standard on Subterranean Spaces

This standard is to provide minimum requirements for the design, operation, and maintenance of developed subterranean spaces for safety to life and property from fire and similar hazards associated with subterranean spaces that are developed for public assembly, business, industrial, or other uses.

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NFPA members and public sector officials may submit a question on an NFPA code or standard. Responses are provided by NFPA Technical Staff on an informal basis.

NFPA 520: News

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