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3.4.6.16.(1)
ApplicationIntent
OS1OS3
ObjectiveOS1 Fire Safety
Attribution
[F02-OS1.2] Applies to sprinklered buildings.
Application
Application 1: 
Door release hardware for exit and egress doors complying with Sentences 3.4.6.16.(2) à (9) that serve a floor area or part of a floor area used exclusively for a bank or the sale of retail merchandise, in buildings that are sprinklered throughout.
This applies, in buildings described in Sentence 1.3.3.2.(1) of Division A, to:
Application 2: 
This also applies to:
  • ramps, stairways and passageways used by the public as access to exits, as stated in Appendix Note A-3.4.6.,
  • tents and air-supported structures, as stated in Sentences 3.1.6.1.(1) and 9.10.1.2.(1).
Exceptions: 
except as stated in:
  • Sentence 3.1.6.2.(1), which prohibits air-supported structures from being located above the first storey on any building,
  • Sentence 3.1.6.2.(2), which prohibits air-supported structures from being used for classrooms or for Groups B, C, or Group F, Division 1 major occupancies,
  • Sentence 3.1.6.2.(3), which requires air-supported structures to be designed as open floor spaces without interior walls, mezzanines, intermediate floors or similar construction,
  • Sentence 3.3.1.3.(5), which applies to rooftop enclosures,
  • Sentence 3.4.2.2.(2), which applies to mezzanines that:
    • are not required to terminate at a vertical fire separation [see Article 3.2.8.1.],
    • are not intended for an occupant load more than 60,
    • do not exceed the area limits for rooms and suites in Table 3.4.2.2., and
    • have limited travel distances to egress doors or stairs, and
  • Sentence 3.4.2.2.(3), which applies to at least half of the required means of egress from a mezzanine if the mezzanine is not required to terminate at a fire separation as permitted by Sentence 3.2.8.2.(1).
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Intent
Intent 1: 
To supersede the requirements of Sentence 3.4.6.15.(1), which would otherwise require doors to be readily openable, and permit exit and egress doors in certain floor areas to be locked if certain conditions are met [the building is sprinklered throughout].
This is to limit the probability that a fire involving the floor area will spread, which could lead to harm to persons who are locked in the floor area.
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