1011.16 Ladders. Permanent ladders shall not serve as a part
of the means of egress from occupied spaces within a building.
Permanent ladders shall be permitted to provide access to
the following areas:
1. Spaces frequented only by personnel for maintenance,
repair or monitoring of equipment.
2. Nonoccupiable spaces accessed only by catwalks,
crawl spaces, freight elevators or very narrow passageways.
3. Raised areas used primarily for purposes of security,
life safety or fire safety including, but not limited to,
observation galleries, prison guard towers, fire towers
or lifeguard stands.
4. Elevated levels in Group U not open to the general public.
5. Nonoccupied roofs that are not required to have stairway
access in accordance with Section 1011.12.1.
6. Ladders shall be constructed in accordance with Section
306.5 of the International Mechanical Code.