3.1.8.8.(1)

Intent 1:

To exempt certain branch ducts from the application of Sentence 3.1.8.7.(1), which would otherwise require fire dampers, on the basis that the lack of fire dampers in this case will not lead to significant spread of fire.

Intent 2:

To direct Code users to Article 3.6.3.4. for exhaust duct risers referred to in Clause 3.1.8.8.(1)(b).