3.4.6.4.(9)ATTRIBUTION:
Functional Statement:
F20
To support and withstand expected loads and forces.
Objective:
OS3.1, OS3.7
APPLICATION:
Design and construction, with respect to minimum loading
values, of handrails and their supports for a stairway or ramp.
This applies, in buildings described in Sentence
1.3.3.2.(1) of Division A, to:
- interior and exterior exits, as stated in Appendix Note ., and
- exits serving floor areas that are intended for occupancy, including mezzanines as stated in Sentence 3.4.2.2.(1).
This also applies to:
- ramps, stairways and passageways used by the public as access to exits, as stated in Appendix Note .,
- tents and air-supported structures, as stated in Sentences 3.1.6.1.(1) and 9.10.1.2.(1),
- stairs in a means of egress from a roof, where a roof is used or intended for an occupant load of more than 60, as stated in Sentence 3.3.1.3.(4),
- ramps and stairways, as stated in Sentence 3.3.1.14.(1), and
- ramps in a barrier-free path of travel, as stated in Clause 3.8.3.4.(1)(e).
INTENT:
To limit the probability that handrails and their supports
will be designed for insufficient loading values, which could lead to failure
of the handrail while being used by a person, which could lead to a person
falling, which could lead to harm to persons.
To limit the probability that handrails and their supports
will be designed for insufficient loading values, which could lead to failure
of the handrail while being used by a person 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.