Dear All, This is not a real question for sprinkler but am appreciated if you can help. Is there a requirement in NFPA that the ductwork for kitchen of a hotel restaurant (commercial kitchen, not residential) must be stainless steel? Seems NFPA90A do not.
NFPA90A: 2-3 Air Distribution. 2-3.1 Air Ducts. 2-3.1.1 Air ducts shall be permitted to be rigid or flexible and shall be constructed of materials that are reinforced and sealed to satisfy the requirements for the use of the air duct system, such as the supply air system, the return or exhaust air system, and the variable volume/pressure air system. 2-3.1.2 Air ducts shall be constructed of the following materials: (1) Iron, steel, aluminum, copper, concrete, masonry, or clay tile. (2) Class 0 or Class 1 rigid or flexible air ducts tested in accordance with UL 181, Standard for Safety Factory-Made Air Ducts and Air Connectors, and installed in conformance with the conditions of listing. Regards, Le Vu Phong Mobile: +84 (0) 902 363 525 _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
