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3.3.2.5.(13) | Application | Intent |
OS3 |
Objective | OS3 Safety in Use |
Attribution | |
Application | Application 1: Treads of steps in a stepped aisle with a slope of
more than 1 in 8 that leads to exits,
in places of assembly that contain fixed seats. This
applies to 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 aisle steps will be improperly
designed with respect to run and tread dimensions, tread finish and proximity
to adjacent rows of seats [e.g. steps: are too shallow, have a slippery surface,
are a tripping hazard, are not marked clearly], which could lead to difficulties
in moving 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.
Intent 2: To limit the probability that aisle steps will be improperly
designed with respect to run and tread dimensions, tread finish and proximity
to adjacent rows of seats [e.g. steps: are too shallow, have a slippery surface,
are a tripping hazard, are not marked clearly], which could lead to persons
tripping or falling, which could lead to harm to persons. Intent 3: To supersede the requirements of Sentence 3.3.1.14.(1),
which would otherwise require step dimensions to conform to Section 3.4. for
exit stairways [specifically Article 3.4.6.7.]. Intent 4: [Clause (d)] To expand the application of Sentence 3.4.6.1.(1) to
stepped aisles that lead to exits. |
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