It does though need to meet the requirement for a class one hood and duct. health code may require stainless. Check that.
On Mon, Aug 18, 2014 at 7:38 PM, Charles Thurston <[email protected]> wrote: > Hello Phong, > > There is not an NFPA requirement that it be stainless steel. 16 Ga Black > steel is used all the time. > > Monday, August 18, 2014, 9:42:11 PM, you wrote: > > > 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 > > > > -- > Best regards, > Charles mailto:[email protected] > > _______________________________________________ > Sprinklerforum mailing list > [email protected] > > http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org > -- Ron Greenman Instructor Fire Protection Engineering Technology Bates Technical College 1101 So. Yakima Ave. Tacoma, WA 98405 [email protected] http://www.bates.ctc.edu/fireprotection/ 253.680.7346 253.576.9700 (cell) Member: ASEE, SFPE, ASCET, NFPA, AFSA, NFSA, AFAA, NIBS, WSAFM, WFC, WFSC They are happy men whose natures sort with their vocations. -Francis Bacon, essayist, philosopher, and statesman (1561-1626) A problem well stated is a problem half solved. -Charles F. Kettering, inventor and engineer (1876-1958) _______________________________________________ Sprinklerforum mailing list [email protected] http://lists.firesprinkler.org/listinfo.cgi/sprinklerforum-firesprinkler.org
