Roof Top Structure Means Of Egress Requirement

The exact size requirement may vary according to your state or local code but if a firefighter in full uniform can fit through the window odds are it is large enough.

Roof top structure means of egress requirement.

Rooftop structure doghouse containing a door that leads to a set of stairs. Rooms areas and spaces at the level of exit discharge complying with section 1006 2 1 with exits that discharge directly to the exterior are permitted to have one exit or access to a single exit. Parking garages where vehicles are mechanically parked shall be permitted to have one exit or access to a single exit. These basic requirements are listed below and are meant to help facility managers and designers recognize that a room or space is obviously over capacity or that a second means of egress will be necessary.

Stipulations placed on the exit discharge include a minimum width 44 inches or the width of the exit clear ceiling heights 8 feet and a prescribed slope of 1 12 or less. The means of egress system serving any story or occupied roof shall be provided with the number of exits or access to exits based on the aggregate occupant load served in accordance with this section. Windows must meet certain size requirements to be considered compliant to code as a point of egress. A staircase or fire escape can also be part of a means of egress.

The means of egress exits should be arranged to permit all occupants to reach a safe place before they are endangered by fire smoke or heat. One important caveat here is that each form of egress has to satisfy current building codes. This means structures like older fire escapes will likely not count as an official means of egress. For other than group h and i 2 occupancies the capacity in inches of means of egress components other than stairways shall be calculated by multiplying the occupant load served by such component by a means of egress capacity factor of 0 15 inch 3 8 mm per occupant in buildings equipped throughout with an automatic sprinkler system installed in accordance with section 903 3 1 1 or 903 3 1 2 and an emergency voice alarm communication system in accordance with section 907 5 2 2.

The goal is for everyone to leave the hazardous areas. In general the means of egress shall not narrow in the direction of travel. For example 1910 37 now requires that a means of egress be at least 28 inches wide. Paragraph 7 2 1 5 8 9 from nfpa 101 says that roof doors have to either allow free egress from the roof or be kept locked.