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3.3.2.5.(12) | Application | Intent |
OS3 |
Objective | OS3 Safety in Use |
Attribution | |
Application | Application 1: Maximum variations in the height of risers 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 the variations in the height
of step risers will be excessively high, 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 the variations in the height
of step risers will be excessively high, 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 stair riser height variations to conform to Section 3.4. for exit stairways [specifically Sentence 3.4.6.7.(3)].
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