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3.6.4.2.(2) | Application | Intent |
| OS1 | OP1 |
| Objective | OS1 Fire Safety |
| Attribution | |
| Application | Application 1: Separation of a horizontal
service space or other concealed space located above a required vertical fire separation from the remainder of the building,
where the construction between the horizontal service
space or other concealed space, and the space below, is a fire
separation with a fire-resistance rating equivalent
to that required for the vertical fire separation.
This applies to buildings described
in Sentence 1.3.3.2.(1) of Division A.
Application 2: This also applies to a horizontal
service space that penetrates a required vertical fire
separation, as stated in Sentence 3.6.4.2.(1).
Exceptions:
except:
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| Intent | Intent 1: To supersede the requirements of Sentence 3.1.8.3.(1),
which would otherwise require the space between a horizontal service space
or other concealed space, and a required vertical fire separation, to be divided
at the fire separation, if certain conditions are met. This
is to limit the probability that a fire in one fire compartment will spread
to another fire compartment by means of the horizontal service space or concealed
space, which could lead to harm to persons in the other compartment.
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