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9.10.11.2.(1) | Application | Intent |
| OS1 | OP3 |
| Objective | OS1 Fire Safety |
| Attribution | |
| Application | Application 1: Construction of party walls on
property lines between dwelling units, where
the walls are constructed as fire separations having
not less than a 1 h fire-resistance rating.
This applies to buildings to which Part
9 applies [see Sentence 1.3.3.3.(1) of Division A for application of
Part 9] that are of residential occupancy and
in which there is no dwelling unit above another dwelling unit.
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| Intent | Intent 1: To supersede the requirements of Sentence 9.10.11.1.(1),
which would otherwise require the party wall to be a firewall, if a certain
measure is taken [i.e. the party wall is constructed as a fire separation
having not less than a 1 h fire-resistance rating], on the basis
that this is restricted to buildings that are limited in height in which evacuation
can be expected to be relatively quick. This [the measure]
is to limit the probability that fire will spread from one dwelling unit to
another, which could lead to harm to persons in the dwelling unit not originally
involved in the fire.
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