9.10.9.15.(2)

Intent 1:

To exempt public corridor separations from the application of Sentence 9.10.9.15.(1) by waiving the requirement for a minimum 45 min fire-resistance rating if certain conditions are met [i.e. the floor area is sprinklered throughout and the sprinkler system meets certain operational requirements].

This is to limit the probability that a fire will not be controlled or suppressed, which could lead to:

• the spread of fire into the public corridor, or from the public corridor into a suite, which could lead to delays in the evacuation or movement of persons to a safe place, or
• delays or ineffectiveness in fire emergency response operations, which could lead to
  • delays in the evacuation or movement of persons to a safe place, or
  • the spread of fire to other parts of the building.

This is to limit the probability of harm to persons.