Page 186 - 2018_IFC

MEANS OF EGRESS

for means of egress from the seating to the exit [BE] 1005.7 Encroachment. Encroachments into the
discharge is provided with a smoke control sys- required means of egress width shall be in accordance with
tem complying with Section 909. the provisions of this section.
3. Facilities with open-air assembly seating shall be [BE] 1005.7.1 Doors. Doors, when fully opened, shall not
permitted to the capacity factors in Section reduce the required width by more than 7 inches (178
1029.6.3 indicated for stepped aisles for exit mm). Doors in any position shall not reduce the required
access or exit stairways where the entire path for width by more than one-half.
means of egress from the seating to the exit dis- Exceptions:
charge is open to the outdoors.
1. Surface-mounted latch release hardware shall be
[BE] 1005.3.2 Other egress components. The capacity, exempt from inclusion in the 7-inch maximum
in inches, of means of egress components other than stair- (178 mm) encroachment where both of the fol-
ways shall be calculated by multiplying the occupant load lowing conditions exists:
served by such component by a means of egress capacity 1.1. The hardware is mounted to the side of the
factor of 0.2 inches (5.1 mm) per occupant.
door facing away from the adjacent wall
Exceptions: where the door is in the open position.
1. For other than Group H and I-2 occupancies, the 1.2. The hardware is mounted not less than 34
capacity, in inches, of means of egress compo- inches (865 mm) nor more than 48 inches
nents other than stairways shall be calculated by (1219 mm) above the finished floor.
multiplying the occupant load served by such 2. The restrictions on door swing shall not apply to
component by a means of egress capacity factor doors within individual dwelling units and sleep-
of 0.15 inches (3.8 mm) per occupant in buildings ing units of Group R-2 occupancies and dwelling
equipped throughout with an automatic sprinkler units of Group R-3 occupancies.
system installed in accordance with Section
903.3.1.1 or 903.3.1.2 and an emergency voice/ [BE] 1005.7.2 Other projections. Handrail projections
alarm communication system in accordance with shall be in accordance with the provisions of Section
Section 907.5.2.2. 1014.8. Other nonstructural projections such as trim and
similar decorative features shall be permitted to project
2. Facilities with smoke-protected assembly seating into the required width not more than 1 / inches (38 mm)
1
shall be permitted to use the capacity factors in on each side. 2
Table 1029.6.2 indicated for level or ramped
aisles for means of egress components other than Exception: Projections are permitted in corridors
stairways where the entire path for means of within Group I-2, Condition 1 in accordance with Sec-
egress from the seating to the exit discharge is tion 407.4.3 of the International Building Code.
provided with a smoke control system complying [BE] 1005.7.3 Protruding objects. Protruding objects
with Section 909. shall comply with the applicable requirements of Section
1003.3.
3. Facilities with open-air assembly seating shall be
permitted to the capacity factors in Section
1029.6.3 indicated for level or ramped aisles for SECTION 1006
means of egress components other than stairways NUMBERS OF EXITS AND
where the entire path for means of egress from EXIT ACCESS DOORWAYS
the seating to the exit discharge is open to the [BE] 1006.1 General. The number of exits or exit access
outdoors.
doorways required within the means of egress system shall
[BE] 1005.4 Continuity. The minimum width or required comply with the provisions of Section 1006.2 for spaces,
capacity of the means of egress required from any story of a including mezzanines, and Section 1006.3 for stories or occu-
building shall not be reduced along the path of egress travel pied roofs.
until arrival at the public way. [BE] 1006.2 Egress from spaces. Rooms, areas or spaces,
[BE] 1005.5 Distribution of minimum width and required including mezzanines, within a story or basement shall be
capacity. Where more than one exit, or access to more than provided with the number of exits or access to exits in accor-
one exit, is required, the means of egress shall be configured dance with this section.
such that the loss of any one exit, or access to one exit, shall [BE] 1006.2.1 Egress based on occupant load and com-
not reduce the available capacity or width to less than 50 per- mon path of egress travel distance. Two exits or exit
cent of the required capacity or width. access doorways from any space shall be provided where
[BE] 1005.6 Egress convergence. Where the means of the design occupant load or the common path of egress
egress from stories above and below converge at an interme- travel distance exceeds the values listed in Table 1006.2.1.
diate level, the capacity of the means of egress from the point The cumulative occupant load from adjacent rooms, areas
of convergence shall be not less than the largest minimum or spaces shall be determined in accordance with Section
width or the sum of the required capacities for the stairways 1004.2.
or ramps serving the two adjacent stories, whichever is Exceptions:
larger.
1. The number of exits from foyers, lobbies, vesti-
bules or similar spaces need not be based on

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