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1006.2.2.4 Day care means of egress.
Day care facilities, rooms or spaces that are classified under Occupancy Group E providing care for more than 10 children shall have access to not less than two exits or exit access doorways.
1006.2.2.5 Vehicular ramps.
Vehicular ramps shall not be considered as an exit access ramp unless provided with pedestrian facilities along the ramp in accordance with Section 1012.1.
1006.3 Egress from stories or occupied roofs.
The means of egress system serving any story, or occupied roof designed for human occupancy or use, shall be provided with the number of exits or access to exits based on the aggregate occupant load served in accordance with this section. The path of egress travel to an exit shall not pass through more than one adjacent story.
Each story or occupied roof designed for human occupancy or use above the second story of a building shall have not less than one interior or exterior exit stairway, or interior or exterior exit ramp. Where three or more exits or access to exits are required, not less than 50 percent of the required exits shall be interior or exterior exit stairways or ramps.
Exceptions:
1. Interior exit stairways and interior exit ramps are not required in open parking garages where the means of egress serves only the open parking garage.
2. Interior exit stairways and interior exit ramps are not required in outdoor facilities where all portions of the means of egress are essentially open to the outside.
1006.3.1 Egress based on occupant load.
Each story or occupied roof designed for human occupancy or use shall have the minimum number of exits, or access to exits, as specified in Table 1006.3.1. A single exit or access to a single exit shall be permitted in accordance with Section 1006.3.2. The required number of exits, or exit access stairways or ramps providing access to exits, from any such story or occupied roof shall be maintained until arrival at the exit discharge or a public way.
Occupant Load (persons per story) | Minimum Number of Exits (per story) |
1 - 500 | 2 |
501 - 1,000 | 3 |
More than 1,000 | 4 |
1006.3.2 Single exits.
A single exit or access to a single exit shall be permitted from any story or occupied roof designed for human occupancy or use where one of the following conditions exists:
1. The occupant load, number of dwelling units and exit access travel distance do not exceed the values in Table 1006.3.2.
2. Rooms, areas and spaces complying with Section 1006.2.1 with exits that discharge directly to the exterior at the level of exit discharge are permitted to have one exit or access to a single exit.
3. Open or enclosed parking garages where vehicles are mechanically parked shall be permitted to have one exit provided such exit shall not be a vehicle ramp.
4. Group R-3 occupancies shall be permitted to have one exit or access to a single exit.
5. Individual single-story or multistory dwelling units shall be permitted to have a single exit or access to a single exit from the dwelling unit provided that both of the following criteria are met:
5.1. The dwelling unit complies with Section 1006.2.1 as a space with one means of egress.
5.2. Either the exit from the dwelling unit discharges directly to the exterior at the level of exit discharge, or the exit access outside the dwelling unit's entrance door provides access to not less than two approved independent exits.
6. Buildings of Occupancy Group R-2 where all of the following conditions are met:
6.1. The building does not exceed four stories;
6.2. The building contains not more than three dwelling units per story;
6.3. The building is of construction Type I or II;
6.4. The building does not exceed 2,500 square feet (232.3 m
2
) per story;
6.5. Each dwelling unit has at least one window facing the street, or facing a lawful yard with open, unobstructed, and direct access to the street. Such yard or direct access shall be a minimum width equal to 25 percent of the vertical distance from the windowsill of the highest operable window, facing such yard or direct access, to the grade of such yard or direct access directly below such window, but shall in no case be less than 36 inches (914.4 mm) wide;
6.6. The stairway extends to the roof surface through a stairway bulkhead complying with Section 1509.2, provided the roof has a slope not steeper than 20 degrees (0.35 rad), or the stairway is constructed against the street wall, with one window facing the street at each landing and access to the roof is provided via a scuttle with a stationary, noncombustible access ladder;
6.7. The stairway is enclosed in 2-hour fire-rated walls with all exit doors leading into the stairway having at least 1 1/2-hour fire rating; and
6.8. The building is equipped throughout with an automatic sprinkler system in accordance with Section 903.3.1.2.
7. Buildings of Occupancy Group R-2 of construction Type I or II not exceeding six stories and not exceeding 2,000 square feet (185.8 m
2
) per story.
Story | Occupancy | Maximum Occupant Load per Floor | Maximum Travel Distance (feet) |
Story | Occupancy | Maximum Occupant Load per Floor | Maximum Travel Distance (feet) |
First story above grade plane or cellar
f | A, B
b
, E
c
, F
b
, M, U, S
b | 49 | 75 |
H-2, H-3 | 3 | 25 | |
H-4, H-5, I, R
e | 10 | 75 | |
S
a | 29 | 100 | |
Second story above grade plane | B, F, M, S
a | 29 | 75 |
R-2
d, e | NA | 50 | |
Third story above grade plane | R-2
d, e | NA | 50 |
For SI: 1 foot = 304.8 mm.
NP = Not Permitted.
NA = Not Applicable.
a. For the required number of exits for open or enclosed parking garages, see Section 1006.3.2, Item 3.
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 travel distance of 100 feet.
c. Day care occupancies shall have a maximum occupant load of 10.
d. Maximum four dwelling units per floor.
e. Buildings classified as Occupancy 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.
f. Limited to the cellar closest to grade plane.
1006.3.2.1 Mixed occupancies.
Where one exit, or exit access stairway or ramp providing access to exits at other stories, is permitted to serve individual stories, mixed occupancies shall be permitted to be served by single exits provided each individual occupancy complies with the applicable requirements of Table 1006.3.2 for that occupancy. Where applicable, cumulative occupant loads from adjacent occupancies shall be considered in accordance with the provisions of Section 1004.1. In each story of a mixed occupancy building, the maximum number of occupants served by a single exit shall be such that the sum of the ratios of the calculated number of occupants of the space divided by the allowable number of occupants indicated in Table 1006.3.2 for each occupancy does not exceed one. Where dwelling units are located on a story with other occupancies, the actual number of dwelling units divided by four plus the ratio from the other occupancy does not exceed one.
1006.4 Open or enclosed parking garages.
Open or enclosed parking garages shall not have less than two exits from each parking tier. An unenclosed vehicle ramp constructed in accordance with Section 1012.1 may serve as one of the required exits when provided with pedestrian facilities along the ramp. Such ramps serving as part of a nonaccessible means of egress in open or enclosed parking garages three stories or less in height and serving not more than one level below grade is permitted to comply with Section 1012.2, Exception 2.
Exception: One exit shall be permitted in parking garages complying with Item 3 of Section 1006.3.2.
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