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3.3.2.11.(3)
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Application
Application 1: 
Intermediate steps in aisles in bleachers, where the vertical distance between seating platforms in bleachers is more than 450 mm, in indoor and outdoor places of assembly.
Application 2: 
This also applies to:
  • tents and air-supported structures, as stated in Sentences 3.1.6.1.(1) and 9.10.1.2.(1), and
  • buildings to which Part 9 applies [see Sentence 1.3.3.3.(1) of Division A for application of Part 9], as stated in Sentence 9.10.1.2.(2).
Exceptions: 
except as stated in:
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Intent
Intent 1: 
To exempt steps in aisles in bleachers of the telescopic type from the requirements of Sentences 3.3.2.5.(11) to (14), which apply to aisle steps in assembly occupancies in general, if certain measures are taken.
This is to limit the probability of:
  • excessively high risers,
  • risers between platforms being unequal, and
  • steps in portions of the width of an aisle.
This is to limit the probability of:
  • delays in the evacuation or movement of persons to a safe place in an emergency situation, which could lead to harm to persons, and
  • persons tripping or falling, which could lead to harm to persons.
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