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9.10.3.4.(1)
OS1OP1
ObjectiveOS1 Fire Safety
Attribution
Application
Application 1: 
Securing, during a fire, of ceiling lay-in panels or tiles, where the ceiling construction has a suspended membrane ceiling with lay-in panels or tiles that contribute to the required 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 buoyant, hot gases generated during a fire will lift lay-in panels or tiles, which could lead to the spread of fire into the ceiling space, which could lead to the premature failure or collapse of the ceiling structure, which could lead to harm to persons.
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