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9.24.3.7.(1)
OS1
ObjectiveOS1 Fire Safety
Attribution
Application
Application 1: 
Doubling of steel studs at openings for fire dampers in non-loadbearing exterior and interior walls required to have a fire-resistance rating, in buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9].
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Intent
Intent 1: 
To limit the probability that the wall framing around fire dampers will have insufficient strength to support the dampers, which could lead to compromised operation of fire dampers in the event of a fire, which could lead to the breaching of fire-rated assemblies, which could lead to harm to persons.
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