9.7.5.3.(2)ATTRIBUTION:
Functional Statement:
F30
To minimize the risk of injury to persons as a result of tripping, slipping, falling, contact, drowning or collision.
F10
To facilitate the timely movement of persons to a safe place in an emergency.
Objective:
OS3.1, OS3.7
APPLICATION:
Protection for windows over stairs, ramps and landings
that extend to less than 900 mm above the surface of the treads,
ramp or landing, in dwelling units in buildings to which Part 9 applies [see Sentence
1.3.3.3.(1) of Division A for application of Part 9].
INTENT:
To limit the probability of inadequate protection under
conditions of crowding in stairs, ramps or landings or for other reasons,
which could lead to persons--who are pushed or who lose their balance--falling
against windows, which could lead to harm to persons.
To limit the probability of inadequate protection under
conditions of crowding in stairs, ramps or landings or for other reasons in
an emergency, which could lead to persons--who are pushed or who lose their
balance--falling against windows, which could lead to delays in the evacuation
or movement of persons to a safe place, which could lead to harm to persons.
To supersede the minimum window height stated in Sentence
9.7.5.3.(1), where the number of occupants is low and their familiarity
with the space reduces the likelihood of their falling and injuring themselves.
To expand the application of Subsection
9.8.8. to
certain windows in stairs, ramps and landings.
To expand the application of the guard loading requirements
in Part 4 [more specifically Article
4.1.5.15.] to certain windows
covered in Part 9.