Roof Egress Requirements

The egress window must have a glass area of not less than 8 of the total floor area of room s for which it is servicing to allow the minimum amount of sufficient natural light.

Roof egress requirements.

The minimum egress window opening is 20 wide. The number of exit stairs required is specified in table 1006 3 1 of the code. 1 each exit route must be maintained to minimize danger to employees during an emergency. Operation and maintenance requirements for exit routes.

Intermediate structural members for example midrails or screens must be installed when there is no wall or parapet wall at least 21 inches high 29 cfr 1926 502 b 2. Minimum 5 7 square feet of net clear opening area. 2 each exit route must be free of explosive or highly flammable furnishings and decorations. Whether you re in a historical zone or not all means of egress must comply with highly specific thorough detailed building codes.

Nfpa emergency exit door requirements for locks. The minimum opening area of the egress window is 5 7 square feet. The egress from the space must be sized for the roof occupant load and must be continuous to the exit discharge at grade. This includes compliance with all of the following.

In summary free access to the roof from the stairwell is not required by the ibc or nfpa 101 but may be required or preferred by the local code official. Two exits are required for occupancies up to 500 persons. The means of egress serves a room with an occupant load above 50 people the means of egress is used in an exit enclosure or while serving a high hazard area while swinging the door should leave available at least half of the required width of a corridor hallway etc for use. The net clear opening area net clear height opening and net clear width opening.

A the danger to employees must be minimized. Free egress from the roof to the stairwell is required for occupied roofs but is not mandated by the ibc or nfpa 101 for unoccupied roofs. The top rails of a guardrail system must be 39 to 45 inches above the walking working surface 29 cfr 1926 502 b 1. A single exit or access to a single exit shall be permitted from any story or occupied roof where one of the following conditions exists.

The minimum egress window opening height is 24 high.