Page 190 - 2018_IFC

MEANS OF EGRESS

less than two exit or exit access doorways shall be [BE] 1008.2.3 Exit discharge. Illumination shall be pro-
arranged in accordance with the provisions of Section vided along the path of travel for the exit discharge from
1007.1.1. Additional required exit or exit access doorways each exit to the public way.
shall be arranged a reasonable distance apart so that if one Exception: Illumination shall not be required where
becomes blocked, the others will be available. the path of the exit discharge meets both of the follow-
[BE] 1007.1.3 Remoteness of exit access stairways or ing requirements:
ramps. Where two exit access stairways or ramps provide 1. The path of exit discharge is illuminated from the
the required means of egress to exits at another story, the exit to a safe dispersal area complying with Sec-
required separation distance shall be maintained for all tion 1028.5.
portions of such exit access stairways or ramps.
2. A dispersal area shall be illuminated to a level not
[BE] 1007.1.3.1 Three or more exit access stairways less than 1 footcandle (11 lux) at the walking sur-
or ramps. Where more than two exit access stairways face.
or ramps provide the required means of egress, not less [BE] 1008.3 Emergency power for illumination. The
than two shall be arranged in accordance with Section power supply for means of egress illumination shall normally
1007.1.3. be provided by the premises’ electrical supply.
[BE] 1008.3.1 General. In the event of power supply fail-
SECTION 1008 ure in rooms and spaces that require two or more means of
MEANS OF EGRESS ILLUMINATION egress an emergency electrical system shall automatically
illuminate all of the following areas:
[BE] 1008.1 Means of egress illumination. Illumination
shall be provided in the means of egress in accordance with 1. Aisles.
Section 1008.2. Under emergency power, means of egress 2. Corridors.
illumination shall comply with Section 1008.3. 3. Exit access stairways and ramps.
[BE] 1008.2 Illumination required. The means of egress [BE] 1008.3.2 Buildings. In the event of power supply
serving a room or space shall be illuminated at all times that failure, in buildings that require two or more means of
the room or space is occupied. egress, an emergency electrical system shall automatically
Exceptions: illuminate all of the following areas:
1. Interior exit access stairways and ramps
1. Occupancies in Group U.
2. Interior and exterior exit stairways and ramps.
2. Aisle accessways in Group A.
3. Exit passageways.
3. Dwelling units and sleeping units in Groups R-1, R-
2 and R-3. 4. Vestibules and areas on the level of discharge used
for exit discharge in accordance with Section
4. Sleeping units of Group I occupancies.
1028.1.
[BE] 1008.2.1 Illumination level under normal power. 5. Exterior landings as required by Section 1010.1.6
The means of egress illumination level shall be not less for exit doorways that lead directly to the exit dis-
than 1 footcandle (11 lux) at the walking surface. charge.
Exception: For auditoriums, theaters, concert or opera [BE] 1008.3.3 Rooms and spaces. In the event of power
halls and similar assembly occupancies, the illumination supply failure, an emergency electrical system shall auto-
at the walking surface is permitted to be reduced during matically illuminate all of the following areas:
performances by one of the following methods provided 1. Electrical equipment rooms.
that the required illumination is automatically restored
upon activation of a premises’ fire alarm system: 2. Fire command centers.
1. Externally illuminated walking surfaces shall be 3. Fire pump rooms.
permitted to be illuminated to not less than 0.2 4. Generator rooms.
footcandle (2.15 lux). 5. Public restrooms with an area greater than 300
2
2. Steps, landings and the sides of ramps shall be square feet (27.87 m ).
permitted to be marked with self-luminous mate- [BE] 1008.3.4 Duration. The emergency power system
rials in accordance with Sections 1025.2.1, shall provide power for a duration of not less than 90 min-
1025.2.2 and 1025.2.4 by systems listed in accor- utes and shall consist of storage batteries, unit equipment
dance with UL 1994. or an on-site generator. The installation of the emergency
[BE] 1008.2.2 Group I-2. In Group I-2 occupancies power system shall be in accordance with Section 2702 of
where two or more exits are required, on the exterior land- the International Building Code.
ings required by Section 1010.6.1, means of egress illumi- [BE] 1008.3.5 Illumination level under emergency
nation levels for the exit discharge shall be provided such power. Emergency lighting facilities shall be arranged to
that failure of a single lamp in a luminaire shall not reduce provide initial illumination that is not less than an average
the illumination level on that landing to less than 1 foot- of 1 footcandle (11 lux) and a minimum at any point of 0.1
candle (11 lux). footcandle(1 lux) measured along the path of egress at

2018 INTERNATIONAL FIRE CODE ® 157
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