| SECTION 1011 EXIT SIGNS
1011.1
Where required. Exits and exit access doors shall be marked
by an approved exit sign readily visible from any direction
of egress travel. Access to exits shall be marked by readily
visible exit signs in cases where the exit or the path of
egress travel is not immediately visible to the occupants.
Exit sign placement shall be such that no point in a corridor
is more than 100 feet (30 480 mm) or the listed viewing distance
for the sign, whichever is less, from the nearest visible
exit sign.
Exceptions:
1.
Exit signs are not required in rooms or areas that require
only one exit or exit access.
2.
Main exterior exit doors or gates that are obviously and
clearly identifiable as exits need not have exit signs where
approved by the building official.
3.
Exit signs are not required in occupancies in Group U and
individual sleeping units or dwelling units in Group R-l,
R-2 or R-3.
4.
Exit signs are not required in sleeping areas in occupancies
in Group 1-3.
5.
In occupancies in Groups A-4 and A-5, exit signs are not
required on the seating side of vomitories or openings into
seating areas where exit signs are provided in the concourse
that are readily apparent from the vomitories. Egress lighting
is provided to identify each vomitory or opening within
the seating area in an emergency.
1011.2
Illumination. Exit signs shall be internally or externally
illuminated.
Exception: Tactile signs required by Section 1011.3 need
not be provided with illumination.
1011.3
Tactile exit signs. A tactile sign stating EXIT and complying
with ICC A117.1 shall be provided adjacent to each door to
an egress stairway, an exit passageway and the exit discharge.
1011.4
Internally illuminated exit signs. Internally illuminated
exit signs shall be listed and labeled and shall be installed
in accordance with the manufacturer's instructions and Section
2702. Exit signs shall be illuminated at all times.
1011.5
Externally illuminated exit signs. Externally illuminated
exit signs shall comply with Sections 1011.5.1 through 1011.5.3.
1011.5.1
Graphics. Every exit sign and directional exit sign
shall have plainly legible letters not less than 6 inches
(152 mm) high with the principal strokes of the letters
not less than 0.75 inch (19.1 mm) wide. The word "EXIT"
shall have letters having a width not less than 2 inches
(51 mm) wide, except the letter "I," and the minimum
spacing between letters shall not be less than 0.375 inch
(9.5 mm). Signs larger than the minimum established in this
section shall have letter widths, strokes and spacing in
proportion to their height. The word "EXIT" shall
be in high contrast with the background and shall be clearly
discernible when the means of exit sign illumination is
or is not energized. If a chevron directional indicator
is provided as part of the exit sign, the construction shall
be such that the direction of the chevron directional indicator
cannot be readily changed.
1011.5.2 Exit sign illumination. The face of an exit
sign illuminated from an external source shall have an intensity
of not less than 5 foot-candles (54 lux).
1011.5.3 Power source. Exit signs shall be illuminated
at all times. To ensure continued illumination for a duration
of not less than 90 minutes in case of primary power loss,
the sign illumination means shall be connected to an emergency
power system provided from storage batteries, unit equipment
or an on-site generator. The installation of the emergency
power system shall be in accordance with Section
2702.
Exception:
Approved exit sign illumination means that provide continuous
illumination independent of external power sources for a duration
of not less than 90 minutes, in case of primary power loss,
are not required to be connected to an emergency electrical
system.
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