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.