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9.9.8.6.(3)
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Application
Application 1: 
One of the means of egress leading to exits from mezzanines, in buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9], where:
  • the mezzanine is not required to terminate at vertical fire separations, as permitted in Sentence 9.10.12.1.(2),
  • all other means of egress from the mezzanine lead to exits accessible at the mezzanine level, and
  • at least one of the following conditions exists
    • the mezzanine has an occupant load of more than 60,
    • the area of the mezzanine exceeds the area limits stated in Table 9.9.7.4., or
    • the distance limits stated in Table 9.9.7.4. measured along the path of travel are exceeded from any point on the mezzanine to:
      • an egress door serving the space that the mezzanine overlooks if the space is served by a single egress door, or
      • anegress stairway leading to an access to exit in the space below if that space is required to be served by 2 or more egress doorways in conformance with Sentence 9.9.7.4.(1).
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Intent
Intent 1: 
To exempt one of the means of egress serving mezzanines from the application of Sentence 9.9.8.6.(1), which would otherwise require exits on the same basis as required for floor areas, and permit one of the means of egress to lead through the room in which the mezzanine is located if certain conditions are met.
This is to limit the probability of delays in the evacuation or movement of persons to a safe place, which could lead to harm to persons.
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