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MEANS OF EGRESS

4. Group R-3 and R-4 occupancies shall be permitted vidual building stories, shall be separated in accordance with
to have one exit or access to a single exit. the provisions of this section.
5. Individual single-story or multistory dwelling units [BE] 1007.1.1 Two exits or exit access doorways. Where
shall be permitted to have a single exit or access to a two exits, exit access doorways, exit access stairways or
single exit from the dwelling unit provided that both ramps, or any combination thereof, are required from any
of the following criteria are met:
portion of the exit access, they shall be placed a distance
5.1. The dwelling unit complies with Section apart equal to not less than one-half of the length of the
1006.2.1 as a space with one means of maximum overall diagonal dimension of the building or
egress.
area to be served measured in a straight line between them.
5.2. Either the exit from the dwelling unit dis- Interlocking or scissor stairways shall be counted as one
charges directly to the exterior at the level exit stairway.
of exit discharge, or the exit access outside
the dwelling unit’s entrance door provides Exceptions:
access to not less than two approved inde- 1. Where interior exit stairways or ramps are inter-
pendent exits. connected by a 1-hour fire-resistance-rated corri-
[BE] 1006.3.3.1 Mixed occupancies. Where one exit, dor conforming to the requirements of Section
or exit access stairway or ramp providing access to 1020, the required exit separation shall be mea-
exits at other stories, is permitted to serve individual sured along the shortest direct line of travel
stories, mixed occupancies shall be permitted to be within the corridor.
served by single exits provided that each individual
occupancy complies with the applicable requirements 2. Where a building is equipped throughout with an
of Table 1006.3.3(1) or 1006.3.3(2) for that occupancy. automatic sprinkler system in accordance with
Where applicable, cumulative occupant loads from Section 903.3.1.1 or 903.3.1.2, the separation dis-
adjacent occupancies shall be considered to be in accor- tance shall be not less than one-third of the length
dance with the provisions of Section 1004.1. In each of the maximum overall diagonal dimension of
story of a mixed occupancy building, the maximum the area served.
number of occupants served by a single exit shall be [BE] 1007.1.1.1 Measurement point. The separation
such that the sum of the ratios of the calculated number distance required in Section 1007.1.1 shall be measured
of occupants of the space divided by the allowable in accordance with the following:
number of occupants indicated in Table 1006.3.3(2) for
each occupancy does not exceed one. Where dwelling 1. The separation distance to exit or exit access
units are located on a story with other occupancies, the doorways shall be measured to any point along
actual number of dwelling units divided by four plus the width of the doorway.
the ratio from the other occupancy does not exceed one.
2. The separation distance to exit access stairways
shall be measured to the closest riser.
SECTION 1007
EXIT AND EXIT ACCESS 3. The separation distance to exit access ramps shall
DOORWAY CONFIGURATION be measured to the start of the ramp run.
[BE] 1007.1.2 Three or more exits or exit access door-
[BE] 1007.1 General. Exits, exit access doorways, and exit
access stairways and ramps serving spaces, including indi- ways. Where access to three or more exits is required, not
[BE] TABLE 1006.3.3(2)
STORIES WITH ONE EXIT OR ACCESS TO ONE EXIT FOR OTHER OCCUPANCIES
MAXIMUM COMMON PATH OF
MAXIMUM OCCUPANT
STORY OCCUPANCY EGRESS TRAVEL DISTANCE
LOAD PER STORY
(feet)
b
b
A, B , E F , M, U 49 75
H-2, H-3 3 25
First story above or below grade plane
H-4, H-5, I, R-1, R-2 a, c 10 75
S b, d 29 75
Second story above grade plane B, F, M, S d 29 75
Third story above grade plane and higher NP NA NA
For SI: 1 foot = 304.8 mm.
NP = Not Permitted.
NA = Not Applicable.
a. Buildings classified as Group R-2 equipped throughout with an automatic sprinkler system in accordance with Section 903.3.1.1 or 903.3.1.2 and provided
with emergency escape and rescue openings in accordance with Section 1030.
b. Group B, F and S occupancies in buildings equipped throughout with an automatic sprinkler system in accordance with Section 903.3.1.1 shall have a
maximum exit access travel distance of 100 feet.
c. This table is used for R-2 occupancies consisting of sleeping units. For R-2 occupancies consisting of dwelling units, use Table 1006.3.3(1).
d. The length of exit access travel distance in a Group S-2 open parking garage shall be not more than 100 feet.

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