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3.4.6.1.(2) | Application | Intent |
OS3 | OP1 | OS1 |
Objective | OS3 Safety in Use |
Attribution | |
Application | Application 1: Design, with respect to ice and snow accumulations,
of treads and landings of exterior exit stairs more
than 10 m high. This applies, in buildings described in Sentence 1.3.3.2.(1) of Division A to:
Application 2: This also applies to:
Exceptions:
except as stated in:
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Intent | Intent 1: To limit the probability that ice and snow will accumulate
on treads and landings of exterior exit stairs, which could lead to delays
in the evacuation or movement of persons to a safe place in an emergency,
which could lead to harm to persons. Intent 2: To limit the probability that ice and snow will accumulate
on treads and landings of exterior exit stairs, which could lead to emergency
responders being delayed or ineffective in carrying out their 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 limit the probability that exterior exit stairs will
be obstructed or slippery, which could lead to persons tripping, slipping
or falling, which could lead to harm to persons. |
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