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NYC Building Code

§ 905.4.1 — § 905.4.1

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What is NYC BC § 905.4.1?

Quick Answer

This section mandates that Class I standpipe system risers and laterals outside of enclosed stairways or pressurized enclosures must have fire resistance equal to vertical enclosures in the building. It prohibits placing standpipe risers in shafts containing gas or fuel pipelines, with an exception for buildings with approved automatic sprinkler systems. Applies to building owners responsible for fire safety compliance.

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

Michael Nacmias - Founding PartnerMichael Sargo - Partner
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905.4.1 Protection.

BC § 905.4.1

Risers and laterals of Class I standpipe systems not located within an enclosed stairway or pressurized enclosure shall be protected by a degree of fire resistance equal to that required for vertical enclosures in the building in which they are located. No standpipe riser shall be placed in any shaft containing a gas or fuel pipeline. Exception: In buildings equipped throughout with an approved automatic sprinkler system, laterals that are not located within an enclosed stairway or pressurized enclosure are not required to be enclosed in fire-resistance-rated construction.

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