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3.1.8.3.(3)
OS1OP1OS1OP1
ObjectiveOS1 Fire Safety
Attribution
(a) [F03-OS1.2]
Application
Application 1: 
Continuity of a shaft, including an exit enclosure, that penetrates a fire separation in buildings described in Sentence 1.3.3.2.(1) of Division A.
Exceptions: 
except as required by Subsection 3.6.3. for a shaft penetrating a roof assembly.
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Intent
Intent 1: 
To limit the probability that fire will spread from one fire compartment to another fire compartment through a shaft, which could lead to harm to persons in the other fire compartment.
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