Back3.4.3.3.(2)

ATTRIBUTION:

Functional Statement:

F10

To facilitate the timely movement of persons to a safe place in an emergency.

F12

To facilitate emergency response.

Objective:

OS3.7

 

APPLICATION:

Reduction in the minimum required width of exit stairs, landings and passageways resulting from the swing of swinging doors.
This applies to exits serving floor areas that are intended for occupancy, including mezzanines as stated in Sentence 3.4.2.2.(1), in buildings described in Sentence 1.3.3.2.(1) of Division A.
This also applies to tents and air-supported structures, as stated in Sentences 3.1.6.1.(1) and 9.10.1.2.(1).

INTENT:

To supersede the requirements of Sentences 3.4.3.2.(8) and 3.4.3.3.(1), and permit a reduction in the width of exits resulting from the swing of swinging doors if the width reduction is limited.
This is to limit the probability that an exit will be substantially reduced in width, which could lead to:
  • insufficient width to permit efficient egress in an emergency situation, which could lead to delays in the evacuation or movement of persons to a safe place, which could lead to harm to persons, and
  • emergency responders being delayed in gaining access to floor areas in an emergency situation, which could lead to delays or ineffectiveness in emergency response operations, which could lead to delays in the evacuation or movement of persons to a safe place, which could lead to harm to persons.

ATTRIBUTION:

Functional Statement:

F12

To facilitate emergency response.

Objective:

OP1.2

 

APPLICATION:

Reduction in the minimum required width of exit stairs, landings and passageways resulting from the swing of swinging doors.
This applies to exits serving floor areas that are intended for occupancy, including mezzanines as stated in Sentence 3.4.2.2.(1), in buildings described in Sentence 1.3.3.2.(1) of Division A.
This also applies to tents and air-supported structures, as stated in Sentences 3.1.6.1.(1) and 9.10.1.2.(1).

INTENT:

To supersede the requirements of Sentences 3.4.3.2.(8) and 3.4.3.3.(1), and permit a reduction in the width of exits resulting from the swing of swinging doors if the width reduction is limited.
This is to limit the probability that an exit will be substantially reduced in width, which could lead to emergency responders being delayed in gaining access to floor areas in a fire situation, which could lead to delays or ineffectiveness in emergency response operations, which could lead to the spread of fire, which could lead to damage to the building.

ATTRIBUTION:

Functional Statement:

F12

To facilitate emergency response.

Objective:

OS1.2

 

APPLICATION:

Reduction in the minimum required width of exit stairs, landings and passageways resulting from the swing of swinging doors.
This applies to exits serving floor areas that are intended for occupancy, including mezzanines as stated in Sentence 3.4.2.2.(1), in buildings described in Sentence 1.3.3.2.(1) of Division A.
This also applies to tents and air-supported structures, as stated in Sentences 3.1.6.1.(1) and 9.10.1.2.(1).

INTENT:

To supersede the requirements of Sentences 3.4.3.2.(8) and 3.4.3.3.(1), and permit a reduction in the width of exits resulting from the swing of swinging doors if the width reduction is limited.
This is to limit the probability that an exit will be substantially reduced in width, which could lead to emergency responders being delayed in gaining access to floor areas in a fire situation, which could lead to delays or ineffectiveness in emergency response operations, which could lead to the spread of fire, which could lead to harm to persons.