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9.10.16.1.(4) | Application | Intent |
| OS1 | OP1 |
| Objective | OP1 Fire Protection of the Building |
| Attribution | |
| Application | Application 1: Fire stopping at the top and bottom of each run of
stairs where the stairs pass through a floor containing concealed space in
which the exposed construction materials within the space have a surface flame-spread rating greater than 25. This
applies to buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9].
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| Intent | Intent 1: To limit the probability that concealed spaces at the top
and bottom of each run of stairs will not be separated from certain other
concealed spaces, which could lead to the spread of fire within these spaces,
which could lead to damage to the building. |
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