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3.2.8.2.(3)
OS1OP1
ObjectiveOS1 Fire Safety
Attribution
Application
Application 1: 
Openings in a fire separation, where:
  • a closure in the opening would disrupt the nature of a manufacturing process, such as a continuous flow of material from storey to storey, and
  • precautions are taken to offset the resulting hazard.
This applies to buildings described in Sentence 1.3.3.2.(1) of Division A.
Application 2: 
This also applies to buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9], where there are:
  • openings through floors that are not protected by shafts or closures, as stated in Sentence 9.10.1.2.(6), or
  • interconnected floor spaces, as stated in Sentence 9.10.9.5.(1).
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Intent
Intent 1: 
To exempt openings in fire separations used in manufacturing operations [e.g. openings used for the flow of material from storey to storey] from the requirements of Sentence 3.2.8.1.(1) and Articles 3.2.8.3. to 3.2.8.9., which would otherwise require a vertical fire separation or certain fire protection measures, if equivalent fire protection is provided to compensate for the lack of closure.
This is to limit the probability that fire will spread through the openings to other parts of the building, which could lead to harm to persons in other parts of the building.
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