Sentence 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 to another part of the building, or
• delays or ineffectiveness in fire emergency response operations, which could lead to the spread of fire to other parts of the building.

This is to limit the probability of damage to the building.