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3.2.8.2.(5)
ApplicationIntent
OS1OP1
ObjectiveOS1 Fire Safety
Attribution
[F02,F03-OS1.2]
Application
Application 1: 
Openings for escalators and inclined moving walks, where:
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 for escalators and inclined moving walks from the requirements of Articles 3.2.8.3. to 3.2.8.9., which would otherwise require certain fire protection measures, if:
  • the size of the openings is limited,
  • the building is sprinklered throughout, and
  • the interconnected floor space contains only certain major occupancies.
This is to limit the probability that:
  • large openings will permit the spread of fire to other parts of the building,
  • a fire will not be controlled or suppressed, which could lead to the spread of fire through the openings, and
  • fire hazards [from the type of occupancy] will not be minimized, which could lead to the start and spread of fire through the openings.
This is to limit the probability of harm to persons.
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