1104.17 Corridor Construction
Corridors serving an occupant load greater than 30 and the openings therein shall provide an effective barrier to resist the movement of smoke. Transoms, louvers, doors and other openings shall be kept closed or be self-closing. In Group I-2, corridors in areas housing patient sleeping or care rooms shall comply with Section 1105.5.
- Corridors in occupancies other than in Group H, that are equipped throughout with an approved automatic sprinkler system.
- Corridors in occupancies in Group E where each room utilized for instruction or assembly has not less than one-half of the required means of egress doors opening directly to the exterior of the building at ground level.
- Corridors that are in accordance with the International Building Code.
- Where 20-minute fire door assemblies are required, solid wood doors not less than 1.75 inches (44 mm) thick or insulated steel doors are allowed.
- Openings protected with fixed wire glass set in steel frames.
- Openings covered with 0.5-inch (12.7 mm) gypsum wallboard or 0.75-inch (19.1 mm) plywood on the room side.
- Opening protection is not required where the building is equipped throughout with an approved automatic sprinkler system.