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3.5.3.1.(1) | Application | Intent |
| OS1 | OP1 |
| Objective | OS1 Fire Safety |
| Attribution | |
| Application | Application 1: Minimum fire-resistance rating of fire separations separating vertical
service spaces used as elevator hoistways from other portions of each
adjacent storey, in buildings described
in Sentence 1.3.3.2.(1) of Division A. Application 2: This also applies to buildings to
which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application
of Part 9], as stated in Sentence 9.10.1.2.(1).
Exceptions:
except as stated in Sentence 3.5.3.1.(2) which applies to
passenger elevators located within interconnected floor
spaces, other than those provided for firefighters in accordance with Article 3.2.6.5.
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| Intent | Intent 1: To limit the probability that a fire in an elevator hoistway
or storey will spread to another storey by means of the hoistway, which could
lead to harm to persons in the other storey. Intent 2: To limit the probability that a fire will spread from a
storey into an elevator hoistway, which could lead to harm to persons in an
elevator car in the hoistway. Intent 3: To supersede the fire separation requirements for vertical
service spaces stated in Sentence 3.6.3.1.(1). |
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