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3.1.9.4.(3) | Application | Intent |
| OS1 | OP1 |
| Objective | OS1 Fire Safety |
| Attribution | |
| Application | Application 1: Combustible drain, waste
and vent piping in any part of a system that penetrates:
This applies to buildings described
in Sentence 1.3.3.2.(1) of Division A.
Exceptions:
except as stated in Sentences 3.1.9.4.(4) to (6), which apply to combustible drain,
waste and vent piping.
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| Intent | Intent 1: To limit the probability that certain combustible piping
that penetrates fire-rated assemblies will contribute to the growth and spread
of fire within the assemblies, which could lead to a structural failure and
collapse of the assemblies, which could lead to harm to persons in the building.
Intent 2: To limit the probability that combustible piping that penetrates
fire-rated fire separations will contribute to the growth and spread of fire
within the fire separation, which could lead to a loss of integrity of the
fire separation, which could lead to the spread of fire and smoke from one
fire compartment to another fire compartment, which could lead to harm to
persons in the other fire compartment. |
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