|
405.1 Aisles.
The minimum width of aisles shall be in accordance with Section 404.5, but not
less than that required by this section. An aisle is not required in seating
facilities where all of the following conditions exist.
1. Seats are without backrests.
2. The rise from row to row does not exceed 6
inches (152mm) per row.
3. The row spacing does not exceed 28 inches
(711 mm) unless the seat boards and footboards are at the same elevation.
4. The number of rows does not exceed 16 rows
in height.
5. The first seating board is not more
than 12 inches (305 mm) above the ground or floor below or a cross aisle.
6.Seatboards have a continuous flat surface.
7.Seatboards provide a walking surface with a
minimum width of 11 inches (279 mm)
8. Egress from seating is not restricted by
rails, guards, or other obstructions.
All
BuiltRiteBleachers.com low rise bleachers under 16 rows in height meet all of
the above conditions.
404.5 Required width.
The clear width of aisles and other
means of egress for indoor smoke protected assemblyseating shall not be less
than the occupant load served by the egress elements multiplied by the
appropriate factor in table 404.5 (1). The clear width of aisles and other
means of egress for indoor assembly seating that is not smoke protected area
shall not be less than the occupant load served by the egress elements
multiplied by the appropriate factor in table 404.5 (3) The total number of
seats specified shall be those within the space exposed to the same environment.
Aisles shall also comply with
section 405. The clear width shall be measured to walls, edges, of seating
and tread edges, except for permitted projections. There shall be no
obstructions in the required width of aisles except for handrails as provided in
Section 409.7 | 
