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// CODE SNIPPET

716.6.3 Non-Fire-Resistance-Rated Assemblies

NYC Building Code 2008 > 7 Fire-Resistance-Rated Construction > 716 Ducts and Air Transfer Openings > 716.6 Horizontal Assemblies > 716.6.3 Non-Fire-Resistance-Rated Assemblies
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Duct systems constructed of approved materials in accordance with the New York City Mechanical Code that penetrate non-fire-resistance-rated floor assemblies and that connect not more than two stories are permitted without shaft enclosure protection provided that the annular space between the assembly and the penetrating duct is filled with an approved noncombustible material to resist the free passage of flame and the products of combustion. Duct systems constructed of approved materials in accordance with the New York City Mechanical Code that penetrate non-fire-resistance-rated floor assemblies and that connect not more than three stories are permitted without shaft enclosure protection provided that the annular space between the assembly and the penetrating duct is filled with an approved noncombustible material to resist the free passage of flame and the products of combustion, and a fire damper is installed at each floor line.
  Exception: Fire dampers are not required in ducts within individual residential dwelling units.

Related Code Sections


716.6.3 Fire-Resistance-Rated Construction, Non-Fire-Resistance-Rated Assemblies
Duct systems constructed of approved materials in accordance with the New York City Mechanical Code that penetrate non-fire-resistance-rated floor ...
NYC Building Code 2008 > 7 Fire-Resistance-Rated Construction > 716 Ducts and Air Transfer Openings > 716.6 Horizontal Assemblies > 716.6.3 Non-Fire-Resistance-Rated Assemblies
Article 11 Fire Resistive Construction [PDF] (page 25)
assemblies having a fire resistive rating of at least three quarters of an hour and an approved automatic sprinkler head on the room side and adjacent ...
NYC 1938 Code [PDF] > 11 Fire Resistive Construction
Article 4 Classifications [PDF] (page 2)
of incombustible materials or assemblies with the following minimum fire resistive ratings: three hours for bearing walls and exterior walls (except panel walls ...
NYC 1938 Code [PDF] > 4 Classifications
703.2 Fire-Resistance-Rated Construction, Fire-Resistance Ratings
with Section 703.3. Where materials, systems or devices that have not been tested as part of a fire-resistance-rated assembly are incorporated ...
NYC Building Code 2008 > 7 Fire-Resistance-Rated Construction > 703 Fire-Resistance Ratings and Fire Tests > 703.2 Fire-Resistance Ratings
715.1 Fire and Smoke Protection Features, General
Joints installed in or between fire-resistance-rated walls, floor or floor/ceiling assemblies and roofs or roof/ceiling assemblies shall be protected ...
NYC Building Code 2022 > 7 Fire and Smoke Protection Features > 715 Fire-Resistant Joint Systems > 715.1 General
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