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9.10.12.4.(5)
ApplicationIntent
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Application
Application 1: 
Soffits or other surfaces that enclose projections as described in Sentence 9.10.12.4.(1), where:
  • all suites spanned by a common attic or roof space or situated above or below the projecting floor are sprinklered, and
  • all rooms, including closets and bathrooms, having openings in the wall beneath the soffit are sprinklered, notwithstanding any exceptions in the sprinkler standards referenced in Article 3.2.5.13.
This applies to buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9] where:
  • a common attic or roof space spans more than 2 suites of residential occupancy and projects beyond the exterior wall of the building,
  • a floor space on an upper storey projects beyond the exterior wall of a lower storey, and a fire separation is required at the floor between the two, and
  • a floor space on an upper storey projects beyond the exterior wall of a lower storey, and the projection is continuous across a vertical fire separation separating two suites,
  • the projection is
    • less than 2.5 m vertically above a window or door, and
    • less than 1.2 m from either side of the window or door.
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Intent
Intent 1: 
To exempt portions of soffits or other surfaces that enclose a projection from the requirements of Sentence 9.10.12.4.(2), if certain measures are taken [i.e. the suites and rooms are sprinklered as described], on the basis that the spread of fire to the attic or roof space is controlled by the automatic sprinkler system.
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