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3.4.7.4.(1) | Application | Intent |
OS1 |
Objective | OS1 Fire Safety |
Attribution | |
Application | Application 1: 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.
Application 2: This also applies to:
Exceptions:
except as stated in:
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Intent | Intent 1: 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. Intent 2: 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. Intent 3: 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). |
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