Back3.4.7.4.(1)

ATTRIBUTION:

Functional Statement:

F05

To retard the effects of fire on emergency egress facilities.

F06

To retard the effects of fire on facilities for notification, suppression and emergency response.

Objective:

OS1.5

 

APPLICATION:

Protection of openings, including access doorways in the exterior walls of the building to which the fire escape is attached, located in a zone described in Sentence 3.4.7.4.(2) [a zone extending from any balcony, platform or stairway of a fire escape to a distance 3 m horizontally, 10 m below, or 1.8 m above].
This applies to fire escapes referred to in Sentence 3.4.7.1.(2), where:
This applies to fire escapes 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:

INTENT:

To limit the probability that fire will spread from a floor area through openings in exterior walls to a fire escape, which could lead to delays in the evacuation or movement of persons to a safe place, which could lead to harm to persons.
To limit the probability that fire will spread from a floor area through openings in exterior walls to a fire escape, 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.
To expand the application of Subsection 3.1.8. [specifically Sentence 3.1.8.1.(2)] to openings in exterior walls located in zones described in Sentence 3.4.7.4.(2).