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3.1.8.8.(6)
ApplicationIntent
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Application
Application 1: 
Fire dampers in ducts that serve commercial cooking equipment and penetrate a required fire separation, in buildings described in Sentence 1.3.3.2.(1) of Division A.
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Intent
Intent 1: 
To exempt certain 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,
  • accidental closing of the fire dampers by the cooking operations would lead to an undue hardship to the operations, and
  • the fire dampers and their operating parts could collect grease, be very difficult to clean, and add to the fire hazard.
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