14R-8-805 Means of egress.

The provisions of Section 805 of IEBC are adopted by reference with the following modifications:

1.   Revise Section 805.1 to read:

"805.1 Scope.

The requirements of this section shall be limited to work areas that include exits or corridors shared by more than one tenant, and where specified they shall apply throughout the story on which the work areas are located or otherwise beyond the work area."

2.   Revise Section 805.2 to read:

"805.2 General.

The means of egress shall comply with the requirements of this section.

Exception: Means of egress complying with the requirements in effect at the time the means of egress was constructed or altered shall be considered to be compliant means of egress if, in the opinion of the building official, they do not constitute a distinct hazard to life."

3.   Revise Section 805.3.1 by italicizing the term "story."

3.1.   Revise Section 805.3.1.1 to read:

"805.3.1.1 Single-exit conditions.

A single exit or access to a single exit shall be permitted from spaces, any story or any occupiable rooftop in accordance with Section 1006.3 of the Chicago Building Code."

4.   Delete Tables 805.3.1.1(1) and 805.3.1.1(2).

5.   Revise Section 805.3.1.2 to read:

"805.3.1.2 Fire escapes required.

For other than Group I, where more than one exit is required, an existing or newly constructed fire escape complying with Section 307 may be approved by the building official as providing one of the required means of egress where conditions do not allow the construction of more adequate means of egress facilities."

6.   Delete Section 805.3.1.2.1.

7.   Revise Section 805.3.3 to read:

"805.3.3 Main entrance-Group A.

Buildings of Group A occupancy with an occupant load of 300 or more shall be provided with a main entrance capable of serving as the main exit with an egress capacity of not less than one-half of the total occupant load. The remaining exits shall be capable of providing one-half of the total required exit capacity.

Exception: Where a main exit is not well defined or where multiple main exits are provided, exits shall be allowed to be distributed around the perimeter of the building provided that the total width of egress is not less than 100 percent of the required width."

7.1.   Revise Section 805.4.1 by italicizing the term "work areas."

8.   Revise Section 805.4.1.1 to read:

"805.4.1.1 Occupant load and travel distance.

In any work area, all rooms and spaces having an occupant load greater than 50 or in which the common path of egress travel exceeds 75 feet (22 860 mm) shall have not fewer than two egress doorways.

Exceptions:

1.   Storage rooms having a maximum occupant load of 10.

2.   Single-exit conditions in accordance with Section 805.3.1.1."

8.1.   Revise Section 805.4.2 by adding an exception to read:

"Exception: in Group B occupancies, existing egress doors and replacement egress doors of the same size and configuration installed in the same location shall be allowed to swing opposite the direction of egress travel when opening onto a corridor and serving an occupant load of 100 or less."

8.2.   Revise Section 805.4.2.1 by replacing "floor area" with "floor area of the story" and "floor" with "story."

8.3.   Revise Section 805.4.3 by deleting "at grade."

8.4.   Revise Section 805.4.3.1 by replacing "floor area" with "floor area of a story" and "from the work area" with "from that story."

9.   Revise Section 805.4.4 to read:

"805.4.4 Panic hardware.

In any work area, and in the egress path from any work area to the exit discharge, in buildings or portions thereof of Group A assembly occupancies with an occupant load greater than 100, all required egress doors equipped with latching devices shall be equipped with panic hardware meeting the requirements of the Chicago Building Code or other approved panic hardware."

9.1.   Revise Section 805.4.4.1 by replacing "floor area" with "floor area of a story" and "throughout the floor" with "throughout that story."

9.2.   Revise the exception to Section 805.5 to read:

"Exception: Openings in corridors where such corridors are not required to be rated in accordance with the Chicago Building Code or where the openings are provided with opening protectives in accordance with the Chicago Building Code."

10.   Revise Section 805.5.1 to read:

"805.5.1 Corridor doors.

Corridor doors in the work area shall not be constructed of hollow core wood and shall not contain louvers. Dwelling unit or sleeping unit corridor doors in work areas in buildings of Groups R and I-1 shall be not less than 1 3/8-inch (35 mm) solid core wood or approved equivalent and shall not have any glass panels. Dwelling unit or sleeping unit corridor doors in work areas in buildings of Groups R and I-1 shall be equipped with door closers. Replacement doors shall be 1 3/4-inch (44 mm) solid bonded wood core or approved equivalent.

Exceptions:

1.   Corridor doors within a dwelling unit, sleeping unit or single-tenant space.

2.   Existing doors meeting the requirements of Resource A for a rating of 15 minutes or more shall be accepted as meeting the provisions of this requirement.

3.   [Reserved.]

4.   [Reserved.]

5.   Door assemblies having a fire protection rating of not less than 20 minutes.

6.   Existing doors to electrical rooms and utility rooms not exceeding 50 square feet (4.6 m2) in floor area may remain."

11.   Revise Section 805.5.2 to read:

"805.5.2 Transoms.

In all buildings of Group I-1, I-2, and R occupancies, all transoms in corridor walls in work areas shall be either glazed with 1/4-inch (6.4 mm) wired glass set in metal frames or other glazing assemblies having a fire protection rating as required for the door and permanently secured in the closed position or sealed with materials consistent with the corridor construction.

Exception: Corridor walls within a dwelling unit, sleeping unit or single-tenant space."

11.1.   Revise Section 805.5.3.1 by replacing "floor area" with "floor area of a story" and "on the floor" with "throughout that story."

11.2.   Revise Section 805.5.4 to read:

"805.5.4 Supplemental requirements for corridor openings.

Where the work area on any story exceeds 50 percent of the floor area, the requirements of Sections 805.5.1 through 805.5 3 shall apply throughout the story."

12.   Revise Section 805.6 to read:

"805.6 Dead-end corridors.

Dead-end corridors in any work area shall not exceed the length specified in Table 805.6.

Exception: Where dead-end corridors of greater length are allowed by the Chicago Building Code.

Table 805.6
Maximum Length of Dead-end Corridors (feet)

Occupancy Classification	Existing or Extended Corridor		Newly Created Corridor or Change of Occupancy
	NS	S	NS	S
Group A-1, A-3, A-4 or A-5	75	75	35	50
Group A-2	50	75	35	50
Group B, F, M, S or U	75	115	35	75
Group E-1	20	20	20	20
Group E-2 or I-4	20	50	35	50
Group H	20	40	0	20
Group I-1	0	50	0	50
Group I-2	0	20	0	20
Group I-3	50	50	35	50
Group R	50	50	35	50

 

For SI: 1 foot = 308.4 mm."

13.   Revise Section 805.7.1 to read:

"805.7.1 Artificial lighting required.

Means of egress in all work areas shall be provided with artificial lighting in accordance with the requirements of the Chicago Building Code and Chicago Electrical Code."

13.1.   Revise Section 805.7.2 by replacing "that floor area" with "the floor area" and "floor" with "story."

13.2.   Revise Section 805.8.2 by replacing "that floor area" with "the floor area" and "floor" with "story."

13.3.   Revise Section 805.9 by replacing "work area floor" with "highest work area story."

14.   Revise Section 805.9.1. to read:

"805.9.1 Minimum requirement.

Every stairway that is part of the required means of egress for any work area and that has three or more risers and is not provided with at least one handrail, or in which the existing handrails are judged to be in danger of collapsing, shall be provided with handrails for the full length of the stairway on not less than one side. Stairways with a required egress width of more than 66 inches (1676 mm) shall have handrails on both sides."

15.   Revise Section 805.9.2 to read:

"805.9.2 Design.

New handrails required in accordance with Section 805.9.1 shall be designed and installed in accordance with the provisions of the Chicago Building Code."

15.1.   Revise Section 805.11 by replacing "work area floor" with "highest work area story."

16.   Revise Section 805.11.2 to read:

"805.11.2 Design.

New guards required in accordance with Section 805.11.1 shall be designed and installed in accordance with the Chicago Building Code."

17.   Add a new Section 805.12 to read:

"805.12 Stairways.

Existing stairways and extensions of existing stairways shall not be required to comply with the requirements of Section 1011 of the Chicago Building Code where the existing space and construction does not allow a reduction in pitch or slope. Existing stairways shall be allowed to be rebuilt without complying with the requirements of Section 1011 of the Chicago Building Code where the existing space and construction does not allow a reduction in pitch or slope."

(Amend Coun. J. 2-19-20, p. 14473, Art. IV, § 16; Amend Coun. J. 10-7-20, p. 21791, Art. IV, § 6)