Intent 1:
To exempt certain public corridors from the application
of Sentence 3.3.1.4.(1), which would otherwise require a fire
separation between a public corridor and the remainder of the storey,
on the basis that the storey is sprinklered throughout and:
- the travel distance to an exit is limited and the corridor
does not serve certain occupancies, or
- the corridor has a minimum width and ceiling height,
and the combined area of the occupancies in the corridor is restricted.
This [the sprinklering] is to limit
the probability that a fire will not be suppressed or controlled,
which could lead to the spread of fire into the public corridor, or
from the public corridor into a suite, which could lead to:
- damage to building, and
- fire emergency response operations being delayed or
ineffective, which could lead to the spread of fire to other parts
of the building, which could lead to damage to the building.
This [limitation on travel distance] is to limit the probability
of excessive travel distance during a fire situation, which could
lead to delays or inefficiencies in emergency response operations,
which could lead to the spread of fire, which could lead to damage
to the building.
This [the minimum corridor width and the restriction on
the area of occupancies] is to limit the probability of:
- insufficient corridor width during a fire situation,
which could lead to delays or inefficiencies in emergency response
operations, which could lead to the spread of fire, which could lead
to damage to the building, and
- the spread of fire from occupancies on one side of the
corridor to occupancies on the other side of the corridor by means
of activities and occupancies in the corridor, which could lead to
damage to the building.
Intent 2:
To exempt certain public corridors from the application
of Sentence 3.3.1.4.(1) by waiving the requirement for a fire
separation of the corridor from a space containing plumbing fixtures
required by Subsection 3.7.2., on the basis that:
- the space is treated as part of the public corridor
since there is expected to be no appreciable fire load in the room,
- the storey is sprinklered throughout, and
- the space and the public corridor are separated from
the remainder of the storey.
This is to limit the probability of
the spread of fire into the public corridor, or from the public corridor
into a suite, which could lead to:
- damage to the building, and
- fire emergency response operations being delayed or
ineffective, which could lead to the spread of fire to other parts
of the building, which could lead to damage to the building.