3.2.6.5.(3)ATTRIBUTION:
Functional Statement:
F06
To retard the effects of fire on facilities for notification, suppression and emergency response.
Objective:
OS1.2, OS1.5
APPLICATION:
Protection of elevators for use by firefighters.
This applies to high buildings, as defined in Sentence
3.2.6.1.(1):
- of Group A, D, E or F major occupancy classification that are more than:
- 36 m high, measured between grade and the floor level of the top storey, or
- 18 m high, measured between grade and the floor level of the top storey, and in which the cumulative or total occupant load on or above any storey above grade, other than the first storey, divided by 1.8 times the width in metres of all exit stairs at that storey, exceeds 300,
- containing a Group B major occupancy in which the floor level of the highest storey of that major occupancy is more than 18 m above grade,
- containing a floor area or part of a floor area located above the third storey designed or intended as a Group B, Division 2 occupancy, and
- containing a Group C major occupancy whose floor level is more than 18 m above grade.
Clauses 3.2.6.5.(3)(b) and (c) also apply to elevators serving floor areas above or below the first storey that are not sprinklered throughout and that have a barrier-free path of travel, as stated in Clause
3.3.1.7.(1)(a).
INTENT:
To limit the probability of direct exposure of the elevator
door interlock mechanism to fire, which could lead to the failure of the interlock
mechanism and the opening or partial opening of the elevator doors during
the time required to achieve occupant safety and for emergency responders
to perform their duties, which could lead to:
- harm to persons, including emergency responders, and
- the failure of the elevator operating mechanism, which could
lead to the elevators not operating as intended, which could lead to delays
or inefficiencies in fire emergency response operations, which could lead
to:
- delays in evacuation or moving to a safe place, which could lead to harm to persons, including emergency responders, and
- the spread of fire to other parts of the building, which could lead to harm to persons, including emergency responders.
ATTRIBUTION:
Functional Statement:
F06
To retard the effects of fire on facilities for notification, suppression and emergency response.
Objective:
OP1.2
APPLICATION:
Protection of elevators for use by firefighters.
This applies to high buildings, as defined in Sentence
3.2.6.1.(1):
- of Group A, D, E or F major occupancy classification that are more than:
- 36 m high, measured between grade and the floor level of the top storey, or
- 18 m high, measured between grade and the floor level of the top storey, and in which the cumulative or total occupant load on or above any storey above grade, other than the first storey, divided by 1.8 times the width in metres of all exit stairs at that storey, exceeds 300,
- containing a Group B major occupancy in which the floor level of the highest storey of that major occupancy is more than 18 m above grade,
- containing a floor area or part of a floor area located above the third storey designed or intended as a Group B, Division 2 occupancy, and
- containing a Group C major occupancy whose floor level is more than 18 m above grade.
Clauses 3.2.6.5.(3)(b) and (c) also apply to elevators serving floor areas above or below the first storey that are not sprinklered throughout and that have a barrier-free path of travel, as stated in Clause
3.3.1.7.(1)(a).
INTENT:
To limit the probability of direct exposure of the elevator
door interlock mechanism to fire, which could lead to the failure of the interlock
mechanism and the opening or partial opening of the elevator doors during
the time required for emergency responders to perform their duties, which
could lead to the failure of the elevator operating mechanism, which could
lead to the elevators not operating as intended, which could lead to delays
or inefficiencies in fire emergency response operations, which could lead
to the spread of fire to other parts of the building, which could lead to
damage to the building.