Roof Egress Requirements

The minimum egress window opening height is 24 high.

Roof egress requirements.

Egress window size and dimensions first lets look at the minimum opening area required. The net clear opening area net clear height opening and net clear width opening. 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. The minimum opening area of the egress window is 5 7 square feet.

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. Nfpa emergency exit door requirements for locks. For example all means of egress shall have a ceiling height of not less than 7 feet 2134 mm the building code then lists six possible exceptions to that one stipulation. 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.

Whether you re in a historical zone or not all means of egress must comply with highly specific thorough detailed building codes. 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 egress from the space must be sized for the roof occupant load and must be continuous to the exit discharge at grade. 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.

The minimum egress window opening is 20 wide. A the danger to employees must be minimized. Los angeles fire code 10 means of egress 1006 numbers of exits and exit access doorways 1006 3 egress from stories or occupied roofs 1006 3 2 single exits. Two exits are required for occupancies up to 500 persons.

Minimum 5 7 square feet of net clear opening area. This includes compliance with all of the following. Operation and maintenance requirements for exit routes. The top rails of a guardrail system must be 39 to 45 inches above the walking working surface 29 cfr 1926 502 b 1.

The number of exit stairs required is specified in table 1006 3 1 of the code.