Municipal Code of Chicago § 14B-24-2400 Defined terms.
14B-24-2400 Defined terms.
Where provisions of Chapter 24 of IBC are adopted by reference, the following terms shall be reset in italic type: "decorative glazing" and "unit skylight."
GLASS AND GLAZING
Municipal Code of Chicago tit. 14B, ch. 14B-24
in effectMunicipal Code of Chicago § 14B-24-2401 General.
14B-24-2401 General.
The provisions of Section 2401 of IBC are adopted by reference without modification.
Municipal Code of Chicago § 14B-24-2402 IBC Section 2402.
14B-24-2402 IBC Section 2402.
The provisions of Section 2402 of IBC are not adopted.
(Amend Coun. J. 2-19-20, p. 14473, Art. II, § 85)
Municipal Code of Chicago § 14B-24-2403 General requirements for glass.
14B-24-2403 General requirements for glass.
The provisions of Section 2403 of IBC are adopted by reference with the following modifications:
1. Revise Section 2403.1 by replacing "approved construction documents" with "permitted construction documents."
2. Revise the last sentence of Section 2403.5 to read:
"Where other glass types are used, the design shall be approved by the building official."
(Amend Coun. J. 2-19-20, p. 14473, Art. II, § 86)
Municipal Code of Chicago § 14B-24-2404 Wind, snow, seismic and dead loads on glass.
14B-24-2404 Wind, snow, seismic and dead loads on glass.
The provisions of Section 2404 of IBC are adopted by reference without modification.
Municipal Code of Chicago § 14B-24-2405 Sloped glazing and skylights.
14B-24-2405 Sloped glazing and skylights.
The provisions of Section 2405 of IBC are adopted by reference with the following modifications:
1. Revise the first sentence of exception 4 to Section 2405.3 to read:
"Screens shall not be required in individual dwelling units in Groups R-2, R-3 and R-5 where fully tempered glass is used as single glazing or as both panes in an insulating glass unit, and the following conditions are met:"
2. Revise the first sentence of exception 5 to Section 2405.4 to read:
"Screens shall not be required for laminated glass with a 15-mil (0.38 mm) polyvinyl butyral (or equivalent) interlayer used in individual dwelling units in Groups R-2, R-3 and R-5 within the following limits:"
3. Revise Section 2405.4 to read:
"2405.4 Framing.
In Type I and II construction, sloped glazing and skylight frames shall be constructed of noncombustible materials. In structures where acid fumes deleterious to metal are incidental to the use of the buildings, pressure- treated wood or other noncorrosive materials may be approved for sashes and frames. Framing supporting sloped glazing and skylights shall be designed to resist the tributary roof loads in Chapter 16. Skylights set at an angle of less than 45 degrees (0.79 rad) from the horizontal plane shall be mounted not less than 8 inches (203 mm) above the plane of the roof on a curb constructed as required for the frame. Skylights shall not be installed in the plane of the roof where the roof pitch is less than 45 degrees (0.79 rad) from the horizontal.
Exception: Installation of a skylight without a curb shall be permitted on roofs with a minimum slope of 14 degrees (three units vertical in 12 units horizontal) in Group R-3 and R-5 occupancies. Unit skylights installed in a roof with a pitch flatter than 14 degrees (0.25 rad) shall be mounted not less than 4 inches (102 mm) above the plane of the roof on a curb constructed as required for the frame unless otherwise specified in the manufacturer’s installation instructions."
4. Revise Section 2405.5 by replacing "approved labeling agency" with "approved agency."
Municipal Code of Chicago § 14B-24-2406 Safety glazing.
14B-24-2406 Safety glazing.
The provisions of Section 2406 of IBC are adopted by reference with the following modifications:
1. Revise exception 1 to Section 2406.3 to read:
"1. For other than tempered glass, manufacturer’s designations are not required where the use of a certificate, affidavit or other evidence confirming compliance with this code is approved by the building official."
2. Revise exception 4 to Section 2406.4.2 to read:
"4. Glazing in walls on the latch side of and perpendicular to the plane of the door in a closed position in buildings of Group R-5 occupancy or within dwelling units and sleeping units in other Group R occupancies."
3. Revise exception 1 to Section 2406.4.6 to read:
"1. The side of a stairway, landing or ramp that has a guard complying with the provisions of Sections 1015 and 1607.8."
4. Revise the exception to Section 2406.4.7 to read:
"Exception: Glazing that is protected by a guard complying with Sections 1015 and 1607.8."
Municipal Code of Chicago § 14B-24-2407 Glass in guards.
14B-24-2407 Glass in guards.
The provisions of Section 2407 of IBC are adopted by reference with the following modifications:
1. Revise Section 2407.1 to read:
"2407.1 Materials.
Glass used in a guard or to support a handrail shall be laminated glass constructed of fully tempered or heat- strengthened glass and shall comply with Category II or CPSC 16 CFR Part 1201 or Class A of ANSI Z97.1. Glazing in guard in-fill panels shall be of a recognized safety glazing material that conforms to the provisions of Section 2406.1.1. For all glazing types, the minimum nominal thickness shall be 1/4 inch (6.4 mm).
Exception: Single fully tempered glass complying with Category II of CPSC 16 CFR Part 1201 or Class A of ANSI Z97.1 shall be permitted to be used in guards where there is no walking surface beneath them or the walking surface is permanently protected from the risk of falling glass."
2. Revise Section 2407.1.1 to read:
"2407.1.1 Loads.
The panels and their support system shall be designed to withstand the loads specified in Section 1607.8. Glass guard elements shall be designed using a factor of safety of four in combination with the mean modulus of rupture for the type of glass provided in Table 2407.1.1.
TABLE 2407.1.1
MODULUS OF RUPTURE
TYPE OF GLASS | MEAN MODULUS OF RUPTURE
Annealed glass | 6,000 psi
Heat-strengthened glass | 12,000 psi
Fully temepered glass | 24,000 psi
For SI: 1 pound per square inch = 6894.75 N/m 2."
3. Revise Section 2407.1.2 to read:
"2407.1.2 Structural glass baluster panels.
Guards with structural glass baluster panels shall be installed with an attached top rail or handrail. The top rail or handrail shall be supported by not fewer than three glass baluster panels, or shall be otherwise supported to remain in place should one glass baluster panel fail.
Exception: An attached top rail or handrail is not required where the glass baluster panels are laminated glass with two or more glass plies of equal thickness and of the same glass type. The panels shall be tested to remain in place as a barrier following impact or glass breakage in accordance with ASTM E2353."
4. Revise Section 2407.1.3 to read:
"2407.1.3 Parking garages.
Glazing materials shall not be installed in guards in parking garages except for pedestrian areas not exposed to impact from vehicles."
5. Delete Section 2407.1.4 and its subsections.
Municipal Code of Chicago § 14B-24-2408 Glazing in athletic facilities.
14B-24-2408 Glazing in athletic facilities.
The provisions of Section 2408 of IBC are adopted by reference without modification.
Municipal Code of Chicago § 14B-24-2409 Glass in walkways, elevator hoistways and elevator cars.
14B-24-2409 Glass in walkways, elevator hoistways and elevator cars.
The provisions of Section 2409 of IBC are adopted by reference with the following modifications:
1. Delete Section 2409.2.2.
2. Delete Section 2409.4.2.
Source: City of Chicago, Municipal Code of Chicago (American Legal Publishing, codelibrary.amlegal.com)URL: https://codelibrary.amlegal.com/codes/chicago/latest/chicago_il/0-0-0-2667527Fetched: 10/24/2026