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408.3 Means of egress.
Except as modified or as provided for in this section, the means of egress provisions of Chapter 10 shall apply.
408.3.1 Door width.
Doors to resident sleeping units shall have a clear width of not less than 28 inches (711 mm).
408.3.2 Sliding doors.
Where doors in a means of egress are of the horizontal-sliding type, the force to slide the door to its fully open position shall be not greater than 50 pounds (220 N) with a perpendicular force against the door of 50 pounds (220 N).
408.3.3 Guard tower doors.
A hatch or trap door not less than 16 square feet (1.49 m
2
) in area through the floor and having dimensions of not less than 2 feet (610 mm) in any direction shall be permitted to be used as a portion of the means of egress from guard towers.
408.3.4 Spiral stairways.
Spiral stairways that conform to the requirements of Section 1011.10 are permitted for access to and between staff locations.
408.3.5 Ship ladders.
Ship ladders shall be permitted for egress from control rooms or elevated facility observation rooms in accordance with Section 1011.15.
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