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9.10.21.4.(1)
OS1OP1OP3
ObjectiveOS1 Fire Safety
Attribution
Application
Application 1: 
Minimum fire-resistance rating of fire separations that separate walkways from each building, where the walkways:
This applies to construction camps 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 fire will spread from one building to another [connected] building by means of a walkway during the time required to achieve occupant safety and for emergency responders to perform their duties, which could lead to harm to persons in the connected building.
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