Portion of the means of egress taht is separated from all other spaces of the bldg
Characteristics of an Exit
-Fully enclosed -Rated - Minimal Penetrations
What makes an exit considered a protected way of travel?
Fire-rated walls, rated doors, and other rated penatrations
Typical Fire Rating
1 or 2 hrs
4 Main Types of Exits:
Exterior Exit Doors, Enclosed Exit Stairways, Horizontal Exits, Exit Passageways
Exterior Exit Doors
Doorway located in the ext wall of a bldg leading from ground floor to exit discharge or public way.
Most common type of exit
Composed of protected enclosure and includes stair enclosure, any door opening into or exiting out of the stairway enclosure, and stair landings inside the enclosure. Doors swing toward exit discharge (into the stairway unless on ground level)
What makes an exit stair different from other stairs?
Its enclosure must be constructed of rated assemblies
Provides a protected exit to a safe area of refuge (could be apart of same bldg or an adjacent one). No change in level for accessibility
Components of a Horizontal Exit
Walls that create the enclosure and the doors thru these walls
Type of horizontal passageway or corridor that provides the same level of protection as an exit stair.
Characteristics of an Exit Passageway
-fully enclosed -fire rated walls, floor, ceiling, and doors leading to the passageway
Where is an Exit Passageway most commonly used?
To extend an exit to the exterior of the bldg and must typically be the same width as the adjacent exit
2 Main Types of Elevators
Freight and Passenger
Are elevators counted when determining the total number of exits provided in a bldg?
What must be used if the elevator is not being used as a means of egress by occupants?
SIGNAGE- directional in elevator lobby and a diagram that shows direction to nearest exit