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3.1.9.5.(1) | Application | Intent |
| OS1 | OP1 |
| Objective | OS1 Fire Safety |
| Attribution | |
| Application | Application 1: Openings--leading into ducts within a ceiling space--that
penetrate a membrane ceiling forming part of an assembly assigned a fire-resistance rating on the basis of Appendix D,
where:
This applies to buildings described
in Sentence 1.3.3.2.(1) of Division A.
|
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| Intent | Intent 1: To limit the probability that openings into rated ceiling
membranes will contribute to the spread of fire within the ceiling space,
which could lead to the failure and collapse of the structure within the ceiling
space, which could lead to harm to persons. |
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