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37 Cards in this Set

  • Front
  • Back
3 parts of Means of Egress
1- Exit Access.

2 - Exit.

3 - Exit Discharge.

Exit Access
Occupied Spaces, not protected as means of escape.
Protected path of travel that allows people to escape the hazard.
Exit Discharge
Between end of the exit and the public way. A place that is open to the sky,
Minimum Ceiling Height Egress Path
7 feet 6 inches. With not more then 50% of the ceiling reduced to 80 inches.
Protruding Objects below 80 inches above the floor.
Protective barriers -less then 27 inches above floor. And Can not protrude more then 4 inches into the path.
May protrude 4.5 inches into the path.
Stair Width v.s. Corridor Width
Because people move slower on stairs, the stair width must be wider then the corridor. Downstream corridor might be narrower then the upstream, but need to negotiate.
Stairway in accessible means of egress
Must be 48 inches wide, or more. Not applies in fully sprinkled buildings.
Egress Door Width and Height
Minimum of 32 inches wide and 80 inches tall. i.e. 3 feet by 6 feet 8 inches.
Stairway Headroom
Must have at least 80 inches headroom. spiral stair 78 inches.
Stairway Width
Minimum 44 inches wide. Occupant less then 50, 36 inches is ok.
Corridors Width
At least 44 inches wide
Ramp Width
At least 44 inches wide
Common-Path-of-Egress Travel
Any portion of the exit access, offering an occupant no choice between separate and distinct path of egress travel to TWO EXITS. 75-100 feet.
Exit-Access Travel Distance
Most common travel distance is 200 feet, 250-300 feet - sprinkled.
Required Guards
Required on all open-sided surfaces where level change is 30 inches or more.
Guard Height
42 inches above the walking surface. Measured vertically from the leading edge of the thread. Dwellings allow for 34-38 inches.
Guard: Stop Sphere Passage.
34 inches or below, a 4 inch sphere, 34-42, 8 inch sphere. in the triangle above the thread, 6 inch sphere.
Both sides of the stair. (Except in dwellings)
Handrails: Located
34-38 inches above the walking surface of thread nose.
Handrails: Circular Profile
Between (Inclusive) 1.25 inches and 2 inches in diameter.
Handrails: Non-Circular Profile
Perimeter: between 4 and 6.25 inches.
Handrail Clearance
1.5 inches.
Projections into Stairway
4.5 inches maximum. (baseboards and stringers)
Floor Area Allowances: Assembly
7 sqf
Floor Area Allowances: Dormitories
50 sqf gross
Floor Area Allowances: Classroom
20 sqf net
Floor Area Allowances: Residential
200 sqf gross
Floor Area Allowances: Warehouse / Aircraft Hangers
500 sqf gross
Floor Area Allowances: Office/Library
100 sqf gross
Use of slope vs. stair
If elevation change is less 12 inches, use a slope. Single steps present trip hazard.
Maximum rise between floors or landings.
12 feet.
1. - 4 - 7 inches. 7.75 inches maximum in dwellings. uniform with 3/8 inch tolerance

2. - on accessible path closed. on non-accessible must prevent passage of 4 inch sphere."

1. minimum 11 inches deep. 10 inches in dwellings. uniform with 3/8 inch tolerance.

2. radius of the leading thread edge 0.5 inches max, and project 1.15 inches out.

Means of Egress
Continuous and unobstructed path of travel (vertical and/or horizontal) from any point in the building to a public way.
Doors swinging into Egress corridor
Door can not swing into the egress path, blocking not more then half of it. And when its fully open, can not project more then 7 inches into the path.