BCAB #1681 - Exhaust Duct Outlet Weather Hood, Sentence 220.127.116.11.(1)
December 16, 2010
Re: Exhaust Duct Outlet Weather Hood, Sentence 18.104.22.168.(1)
This appeal concerns the weather hood for a residential kitchen exhaust duct.
Reason for Appeal
Requirements for exhaust ducts and their exterior termination (hood) are addressed separately in Articles 22.214.171.124. and 126.96.36.199. respectively.
The appellant contends that the exterior termination is not a part of the exhaust ductwork and is not subject to the requirements of Article 188.8.131.52. Outdoor terminations for exhaust outlets are subject to the requirements of 184.108.40.206.(1) only, which does not require them to be noncombustible.
Building Official's Position
The building official maintains that the exterior termination is part of the kitchen exhaust ductwork and is required to be noncombustible per 220.127.116.11.(6) in addition to the requirements of 18.104.22.168.(1). In some circumstances, such as a roof termination, the cap is used to secure the rest of the ductwork.
Appeal Board Decision #1681
It is the determination of the Board that the hood is not considered to be a component of the exhaust duct and does not need to conform to Sentence 22.214.171.124.(1).
George Humphrey, Chair