ADOPTS WITH AMENDMENTS:

International Building Code 2018 (IBC 2018)

Heads up: There are no amended sections in this chapter.

14B-31-3101 The provisions of Section 3101 of IBC are adopted by reference with the following modification:

Added Coun. J. 4-10-19, p. 100029.

The provisions of this chapter shall govern special construction including membrane structures, temporary structures, pedestrian walkways and tunnels, automatic vehicular gates, awnings and canopies, marquees, towers, antennas swimming pool enclosures and safety devices, solar energy systems, greenhouses and fences.

14B-31-3102 The provisions of Section 3102 of IBC are adopted by reference with the following modifications:

Added Coun. J. 4-10-19, p. 100029.

The provisions of Sections 3102.1 through 3102.8 shall apply to air-supported, air-inflated, membrane-covered cable, membrane-covered frame and tensile membrane structures, collectively known as membrane structures, erected for a period of 180 days or longer. Those erected for a shorter period of time shall comply with Section 3103. Membrane structures covering water storage facilities, water clarifiers, water treatment plants, sewage treatment plants, greenhouses and similar facilities not used for human occupancy are required to meet only the requirements of Sections 3102.3.1 and 3102.7. Membrane structures erected on a building, balcony, deck or other structure for any period of time shall comply with this section.
Tensile membrane structures and air-supported structures, including permanent and temporary structures, shall be designed and constructed in accordance with ASCE 55. The provisions in Sections 3102.3 through 3102.6 shall apply.

Noncombustible membrane structures shall be classified as Type IIB construction. Noncombustible frame or cable-supported structures covered by a membrane in accordance with Section 3102.3.1 shall be classified as Type IIB construction. Other membrane structures shall be classified as Type VB construction.

Exception: Plastic less than 30 feet (9144 mm) above any floor used in greenhouses, where occupancy by the general public is not authorized, and for aquaculture pond covers is not required to meet the fire propagation performance criteria of Test Method 1 or Test Method 2, as appropriate, of NFPA 701.

Membranes and interior liners shall be either noncombustible as set forth in Section 703.5 or meet the fire propagation performance criteria of Test Method 1 or Test Method 2, as appropriate, of NFPA 701 and the manufacturer's test protocol.

Exception: Plastic less than 20 mil (0.5 mm) in thickness used in greenhouses, where occupancy by the general public is not authorized, and for aquaculture pond covers is not required to meet the fire propagation performance criteria of Test Method 1 or Test Method 2, as appropriate, of NFPA 701.

The area of a membrane structure shall not exceed the limitations specified in Section 506.

Membrane structures shall not exceed one story nor shall such structures exceed the height limitations in feet specified in Section 504.3.

Exception: Noncombustible membrane structures serving as roofs only.

Membrane structures shall be permitted to be utilized as specified in this section as a portion of buildings of other types of construction. Height and area limits shall be as specified for the type of construction and occupancy of the building.
A noncombustible membrane shall be permitted for use as the roof or as a skylight of any building or atrium of a building of any type of construction provided that the membrane is not less than 20 feet (6096 mm) above any floor, balcony or gallery.
A membrane meeting the fire propagation performance criteria of Test Method 1 or Test Method 2, as appropriate, of NFPA 701 shall be permitted to be used as the roof or as a skylight on buildings of Type IIB, III, IV and V construction, provided that the membrane is not less than 20 feet (6096 mm) above any floor, balcony or gallery.
The structure shall be designed and constructed to sustain dead loads; loads due to tension or inflation; live loads including wind, snow or flood and seismic loads and in accordance with Chapter 16.
For membrane-covered frame structures, the membrane shall not be considered to provide lateral restraint in the calculation of the capacities of the frame members.
Air-supported and air-inflated structures shall be provided with primary and auxiliary inflation systems to meet the minimum requirements of Sections 3102.8.1 through 3102.8.3.
The inflation system shall consist of one or more blowers and shall include provisions for automatic control to maintain the required inflation pressures. The system shall be so designed as to prevent overpressurization of the system.
In addition to the primary inflation system an auxiliary inflation system shall be provided with sufficient capacity to maintain the inflation of the structure in case of primary system failure. The auxiliary inflation system shall operate automatically when there is a loss of internal pressure and when the primary blower system becomes inoperative.

Blower equipment shall meet all of the following requirements:

  1. Blowers shall be powered by continuous-rated motors at the maximum power required for any flow condition as required by the structural design.
  2. Blowers shall be provided with inlet screens, belt guards and other protective devices as required by the building official to provide protection from injury.
  3. Blowers shall be housed within a weather-protecting structure.
  4. Blowers shall be equipped with backdraft check dampers to minimize air loss when inoperative.
  5. Blower inlets shall be located to provide protection from air contamination. The location of inlets shall be shown on the construction documents.
Wherever an auxiliary inflation system is required, an approved standby power-generating system shall be provided. The system shall be equipped with a suitable means for automatically starting the generator set upon failure of the normal electrical service and for automatic transfer and operation of all of the required electrical functions at full power within 60 seconds of such service failure. Standby power shall be capable of operating independently for not less than 4 hours.
A system capable of supporting the membrane in the event of deflation shall be provided for in air-supported and air-inflated structures having an occupant load of 50 or more or where covering a swimming pool regardless of occupant load. The support system shall be capable of maintaining membrane structures used as a roof for Type I construction not less than 20 feet (6096 mm) above floor or seating areas. The support system shall be capable of maintaining other membranes not less than 7 feet (2134 mm) above the floor, seating area or surface of the water.

14B-31-3103 The provisions of Section 3103 of IBC are not adopted. The following is adopted as Section 3103:

Added Coun. J. 4-10-19, p. 100029.

Amended Coun. J. 7-24-19, p. 3647.

Amended Coun. J. 2-19-20, p. 14474.

The provisions of Sections 3103.1 through 3103.3 shall apply to temporary structures. Structures erected on the same site for more than 180 days within a 12-month period shall comply with provisions of this code applicable to permanent structures.

Exceptions:

  1. Temporary structures associated with ongoing construction activity shall not be subject to the 180-day limit.
  2. Membrane structures that are erected on occupiable rooftops, exterior balconies, decks or similar structures for any period of time shall be regulated as permanent membrane structures in accordance with Section 3102 unless otherwise approved by the building official.
Temporary structures and uses shall conform to the structural strength, fire safety, means of egress, accessibility, light, ventilation and sanitary requirements of this code as necessary to ensure public health, safety and general welfare except as modified by this section.
Temporary structures and uses shall be protected from fire hazards in accordance with Sections 3103.1.2.1 and 3103.1.2.2.
Temporary structures exceeding 600 square feet (56 m2) in floor area or where cooking will occur within 20 feet (6096 mm) of the structure shall be provided with portable fire extinguishers in accordance with Section 905, and no less than one.
Temporary structures exceeding 1,000 square feet (93 m2) in floor area that will be used for a period longer than 48 hours shall be provided with an emergency lighting system complying with Article 700 of the Chicago Electrical Code.
Temporary structures shall be provided with means of egress in accordance with Chapter 10. For temporary structures exceeding 600 square feet (56 m2) in floor area, a dimensioned exit plan, showing aisles, seating and other furnishings, shall be provided as part of the permit application. Temporary structures exceeding 1,000 square feet (93 m2) in floor area shall be provided with illuminated exit signs.
Where temporary structures do not meet all structural requirements applicable to permanent structures, the building official may issue a conditional permit requiring monitoring of weather conditions and allowing the structure to be used up to a specified wind velocity or under other applicable climatic limitations.
Temporary structures and uses shall be provided with temporary sanitary facilities in accordance with the provisions of the Chicago Plumbing Code.
Electrical equipment and wiring shall comply with the Chicago Electrical Code.
Temporary tents and other membrane structures shall comply with Sections 3103.2.1 through 3103.2.4.

Temporary tents and membrane structures shall not be erected within 12 feet (3658 mm) of existing buildings or property lines.

Exceptions:

  1. A temporary covered passageway, no more than 8 feet (2438 mm) wide, with open or enclosed sides, may be provided to connect temporary structures to existing buildings.
  2. Temporary structures need not be separated from existing buildings where the aggregate floor area of temporary structures does not exceed 5,000 square feet (465 m2) and the temporary structure will not impede required means of egress for the existing building.
The permit application shall be accompanied by a certificate of fire resistance executed by an approved agency certifying that the structure meets the flame propagation performance requirements of NFPA 701. If the treatment indicated on the certificate is not of the permanent type, the certificate shall be dated within 360 days preceding the last date of intended use. If the tent fabric is certified as having been rendered permanently fire resistant during manufacture, or is made of an inherently fire resistant fabric, then the certificate shall be dated no earlier than seven years prior to the last date of intended use. The certificate shall indicate the type of fabric and method of compliance with NFPA 701.
Membrane structures and their components shall have a permanently affixed label bearing the identification of size and fabric or material type.

The permit application shall be accompanied by a certificate providing all of the following information relative to the flame propagation performance criteria of the fabric:

  1. The name and address for the owner of the structure.
  2. Date the fabric was last treated with flame-retardant solution, if applicable.
  3. Trade name or kind of chemical used in treatment.
  4. Name of person or firm treating the material.
  5. Name of testing agency and test standard by which the fabric was tested.

A copy of the certificate must be kept on site and made available to the building official or fire code official.

Liquefied petroleum gas (LP gas) tanks shall not be permitted inside of or within 10 feet (3048 mm) of temporary tents and membrane structures.
The design and construction of the fabric envelope and the method of anchoring shall be in accordance with Architectural Fabric Structures Institute FSAAS.
An air-supported structure containing occupiable space shall be furnished with not less than two blowers, each of which has adequate capacity to maintain full inflation pressure with normal leakage. The design of the blower shall be so as to provide integral limiting pressure at the design pressure specified by the manufacturer.
Temporary structures with an occupant load greater than 100 shall also comply with Section 3102.8.
Temporary structures, other than tents and other membrane structures, shall comply with Sections 3103.3.1 and 3103.2.

Temporary structures of combustible construction shall not be erected within 12 feet (3658 mm) of existing buildings or property lines.

Exceptions:

  1. A temporary covered passageway, no more than 8 feet (2438 mm) wide, with open or enclosed sides, may be provided to connect temporary structures to existing buildings.
  2. Temporary structures need not be separated from existing buildings where the aggregate floor area of temporary structures does not exceed 5,000 square feet (465 m2) and the temporary structure will not impede required means of egress for the existing building.
Liquefied petroleum gas (LP gas) tanks shall not be permitted inside of or within 10 feet (3048 mm) of temporary structures of combustible construction.

14B-31-3104 The provisions of Section 3104 of IBC are adopted by reference with the following modifications:

Added Coun. J. 4-10-19, p. 100029.

This section shall apply to connections between buildings such as pedestrian walkways or tunnels, located at, above or below grade level, that are used as a means of travel by persons. The pedestrian walkway shall not contribute to the building area or the number of stories or height of connected buildings.
Pedestrian walkways shall be designed and constructed in accordance with Sections 3104.2 through 3104.9. Tunnels shall be designed and constructed in accordance with Sections 3104.2 and 3104.10.

Buildings connected by pedestrian walkways or tunnels shall be considered to be separate structures.

Exceptions:

  1. Buildings that are on the same lot and considered as portions of a single building in accordance with Section 503.1.2.
  2. For purposes of calculating the number of Type B units required by Chapter 11, structurally connected buildings and buildings with multiple wings shall be considered to be one structure.

The pedestrian walkway shall be of noncombustible construction.

No furnishings or decorations shall be located in the pedestrian walkway unless approved by the fire code official.

The connection of a pedestrian walkway to a building shall comply with Section 3104.5.1, 3104.5.2, 3104.5.3 or 3104.5.4.

Exception: Buildings that are on the same lot and considered as portions of a single building in accordance with Section 503.1.2.

3104.5.1 Fire Barriers

ILLUSTRATION
Pedestrian walkways shall be separated from the interior of the building by not less than 2-hour fire barriers constructed in accordance with Section 707 and Sections 3104.5.1.1 through 3104.5.1.3.
Exterior walls of buildings connected to pedestrian walkways shall be 2-hour fire-resistance rated. This protection shall extend not less than 10 feet (3048 mm) in every direction surrounding the perimeter of the pedestrian walkway.
Openings in exterior walls required to be fire-resistance rated in accordance with Section 3104.5.1.1 shall be equipped with opening protectives providing a not less than 3/4-hour fire protection rating in accordance with Section 716.
The fire barrier shall be supported by construction as required by Section 707.5.1.

The wall separating the pedestrian walkway and the building shall comply with Section 3104.5.2.1 or 3104.5.2.2 where:

  1. The distance between the connected buildings is more than 10 feet (3048 mm).
  2. The pedestrian walkway and connected buildings are equipped throughout with an automatic sprinkler system in accordance with Section 903.3.1.1, and the roof of the walkway is not more than 55 feet (16 764 mm) above grade connecting to the fifth, or lower, story above grade plane, of each building.

    Exception: Open parking garages need not be equipped with an automatic sprinkler system.

The wall shall be capable of resisting the passage of smoke.
The wall shall be constructed of a tempered, wired or laminated glass and doors separating the interior of the building from the pedestrian walkway. The glass shall be protected by an automatic sprinkler system in accordance with Section 903.3.1.1 that, when actuated, shall completely wet the entire surface of interior sides of the wall or glass. Obstructions shall not be installed between the sprinkler heads and the wall or glass. The glass shall be in a gasketed frame and installed in such a manner that the framing system will deflect without breaking (loading) the glass before the sprinkler operates.

Where the distance between the connected buildings is more than 10 feet (3048 mm), the walls at the intersection of the pedestrian walkway and each building need not be fire-resistance rated provided that both sidewalls of the pedestrian walkway are not less than 50 percent open with the open area uniformly distributed to prevent the accumulation of smoke and toxic gases. The roof of the walkway shall be located not more than 40 feet (12 160 mm) above grade plane, and the walkway shall only be permitted to connect to the third or lower story of each building.

Where exterior walls of connected buildings are required by Section 705 to have a fire-resistance rating greater than 2 hours, the walls at the intersection of the pedestrian walkway and each building need not be fire-resistance rated provided:

  1. The pedestrian walkway is equipped throughout with an automatic sprinkler system installed in accordance with Section 903.3.1.1.
  2. The roof of the walkway is not located more than 55 feet (16 764 mm) above grade plane and the walkway connects to the fifth, or lower, story above grade plane of each building.
Access shall be provided at all times to a pedestrian walkway that serves as a required exit.
The unobstructed width of pedestrian walkways shall be not less than 36 inches (914 mm). The total width shall be not greater than 30 feet (9144 mm).

The length of exit access travel shall be 200 feet (60 960 mm) or less.

Exceptions:

  1. Exit access travel distance on a pedestrian walkway equipped throughout with an automatic sprinkler system in accordance with Section 903.3.1.1 shall be 250 feet (76 200 mm) or less.
  2. Exit access travel distance on a pedestrian walkway constructed with both sides not less than 50 percent open shall be 300 feet (91 440 mm) or less.
  3. Exit access travel distance on a pedestrian walkway constructed with both sides not less than 50 percent open, and equipped throughout with an automatic sprinkler system in accordance with Section 903.3.1.1, shall be 400 feet (122 m) or less.
Separation between the tunneled walkway and the building to which it is connected shall be not less than 2-hour fire-resistant construction and openings therein shall be protected in accordance with Section 716.

14B-31-3105 The provisions of Section 3105 of IBC are adopted by reference with the following modifications:

Added Coun. J. 4-10-19, p. 100029.

Amended Coun. J. 2-19-20, p. 14474.

Awnings and canopies shall comply with the requirements of Sections 3105.2 and 3105.3 and other applicable sections of this code.
Awnings and canopies installed over the public way shall also comply with Chapter 32 of this code and Chapter 10-28 of the Municipal Code.
Awnings and canopies shall be designed and constructed to withstand wind or other lateral loads and live loads as required by Chapter 16 with due allowance for shape, open construction and similar features that relieve the pressures or loads. Structural members shall be protected to prevent deterioration. Awnings shall have frames of noncombustible material, fire-retardant-treated wood, heavy timber complying with Section 2304.11, or 1-hour construction with combustible or noncombustible covers and shall be either fixed, retractable, folding or collapsible.

Awnings and canopies shall be provided with a covering that complies with one of the following:

  1. The fire propagation performance criteria of Test Method 1 or Test Method 2, as appropriate, of NFPA 701.
  2. Has a flame spread index not greater than 25 when tested in accordance with ASTM E84 or UL 723.
  3. Meets all of the following criteria when tested in accordance with NFPA 286:

    1. 3.1. During the 40 kW exposure, flames shall not spread to the ceiling.
    2. 3.2. Flashover, as defined in NFPA 286, shall not occur.
    3. 3.3. The flame shall not spread to the outer extremity of the sample on any wall or ceiling.
    4. 3.4. The peak heat release rate throughout the test shall not exceed 800 kW.

14B-31-3106 The provisions of Section 3106 of IBC are adopted by reference with the following modifications:

Added Coun. J. 4-10-19, p. 100029.

Marquees shall comply with Sections 3106.2 through 3106.5 and other applicable sections of this code.
Marquees installed over the public way shall also comply with Chapter 32 and Chapter 10-28 of the Municipal Code.
The height or thickness of a marquee measured vertically from its lowest to its highest point shall be not greater than 3 feet (914 mm) where the marquee projects more than two-thirds of the distance from the lot line to the curb line, and shall be not greater than 9 feet (2743 mm) where the marquee is less than two-thirds of the distance from the lot line to the curb line.
Where the roof or any part thereof is a skylight, the skylight shall comply with the requirements of Chapter 24. Every roof and skylight of a marquee shall be sloped to downspouts that shall conduct any drainage from the marquee in such a manner so as not to spill over the sidewalk.
Every marquee shall be so located as not to interfere with the operation of any exterior standpipe, and such that the marquee does not obstruct the clear passage of stairways or exit discharge from the building or the installation or maintenance of street lighting.
A marquee shall be supported entirely from the building and constructed of noncombustible materials. Marquees shall be designed as required in Chapter 16. Structural members shall be protected to prevent deterioration.

14B-31-3107 The provisions of Section 3107 of IBC are not adopted.

Added Coun. J. 4-10-19, p. 100029.

14B-31-3108 The provisions of Section 3108 of IBC are adopted by reference without modification.

Added Coun. J. 4-10-19, p. 100029.

Towers shall be designed and constructed in accordance with the provisions of TIA-222. Towers shall be designed for seismic loads; exceptions related to seismic design listed in Section 2.7.3 of TIA-222 shall not apply. In Section 2.6.6.2 of TIA 222, the horizontal extent of Topographic Category 2, escarpments, shall be 16 times the height of the escarpment.

Exception: Single free-standing poles used to support antennas not greater than 75 feet (22 860 mm), measured from the top of the pole to grade, shall not be required to be noncombustible.

Towers shall be located such that guy wires and other accessories shall not cross or encroach on any street or other public space, or over above-ground electric utility lines, or encroach on any privately owned property without the written consent of the owner of the encroached-upon property, space or above-ground electric utility lines. Towers shall be equipped with climbing and working facilities in compliance with TIA-222. Access to the tower sites shall be limited as required by applicable OSHA, FCC and EPA regulations.

14B-31-3109 The provisions of Section 3109 of IBC are adopted by reference with the following modification.

Added Coun. J. 4-10-19, p. 100029.

Amended Coun. J. 2-19-20, p. 14474.

The design and construction of swimming pools, spas and hot tubs shall comply with the Chicago Plumbing Code.

14B-31-3110 The provisions of Section 3110 of IBC are adopted by reference without modification.

Added Coun. J. 4-10-19, p. 100029.

Automatic vehicular gates shall comply with the requirements of Sections 3110.2 and 3110.3 and other applicable sections of this code.
Vehicular gates intended for automation shall be designed, constructed and installed to comply with the requirements of ASTM F2200.
Vehicular gate openers, where provided, shall be listed in accordance with UL 325.

14B-31-3111 The provisions of Section 3111 of IBC are adopted by reference with the following modification:

Added Coun. J. 4-10-19, p. 100029.

Solar energy systems shall comply with the requirements of this section.
Rooftop-mounted photovoltaic panels and modules and solar thermal collectors shall be designed in accordance with Section 1609.
Roof structures that provide support for solar energy systems shall be designed in accordance with Section 1607.13.5.
Solar thermal systems shall be designed and installed in accordance with Section 2606.12, the Chicago Plumbing Code, the Chicago Mechanical Code and the Chicago Fire Prevention Code.
Solar thermal systems and components shall be listed and labeled in accordance with ICC 900/SRCC 300 and ICC 901/SRCC 100.
Photovoltaic solar energy systems shall be designed and installed in accordance with this section, the Chicago Fire Prevention Code, the Chicago Electrical Code and the manufacturer's installation instructions.
Photovoltaic panels and modules shall be listed and labeled in accordance with UL 1703. Inverters shall be listed and labeled in accordance with UL 1741. Systems connected to the utility grid shall use inverters listed for utility interaction.
Rooftop-mounted photovoltaic systems shall have a fire classification in accordance with Section 1505.9. Building-integrated photovoltaic systems shall have a fire classification in accordance with Section 1505.8.
Building-integrated photovoltaic systems that serve as roof coverings shall be designed and installed in accordance with Section 1507.18.
Roof access, pathways and spacing requirements shall be provided in accordance with Section 1204 of the Chicago Fire Prevention Code.
Ground-mounted photovoltaic systems shall be designed and installed in accordance with Chapter 16 and the Chicago Fire Prevention Code.
Ground-mounted photovoltaic systems shall be subject to the fire separation distance requirements determined by the fire code official.

14B-31-3112 The provisions of Section 3112 of IBC are adopted by reference without modification.

Added Coun. J. 4-10-19, p. 100029.

The provisions of this section shall apply to greenhouses that are designed and used for the cultivation, maintenance, or protection of plants.
Greenhouses shall be accessible in accordance with Chapter 11.
Greenhouses shall comply with the structural design requirements for greenhouses in Chapter 16.
Glass and glazing used in greenhouses shall comply with Section 2405.
Light-transmitting plastics shall be permitted in lieu of plain glass in greenhouses and shall comply with Section 2606.
Greenhouses that are membrane structures shall comply with Section 3102.
Plastic films used in greenhouses shall comply with Section 3102.3.

14B-31-3113 The provisions of Section 3113 of IBC are not adopted.

Added Coun. J. 4-10-19, p. 100029.

14B-31-3114 The following language is adopted as a new Section 3114:

Added Coun. J. 4-10-19, p. 100029.

Amended Coun. J. 2-19-20, p. 14474.

Fences shall comply with the provisions of Sections 3114.2 through 3114.4.
Fences shall be classified according to the general form of their construction as screen fences or solid fences and according to their combustibility in accordance with Sections 3114.2.1 through 3114.2.3.
A screen fence is a fence so constructed that at least 50 percent of the superficial area thereof consists of regularly distributed apertures.
A solid fence is a fence so constructed that less than 50 percent of the superficial area thereof consists of regularly distributed apertures.
Any fence not constructed entirely of noncombustible materials shall be classed as a combustible fence.

The height of fences shall not exceed the values in Table 3114.3.

TABLE 3114.3

MAXIMUM HEIGHT OF FENCES

MATERIAL CLASSIFICATION MAXIMUM HEIGHT
(feet)
NOTES
Combustible Screen fence 8 All
Solid fence 6 Horizontal distance from fence to public way less than or equal to
height of fence
8 Horizontal distance from fence to public way exceeds height of fence
Noncombustible Screen fence 10 All others
15 Enclosing a Group A-5 occupancy; enclosing a yard accessory to a
Group B, F, I, M or S occupancy
Solid fence 8 All others
12 Enclosing a Group A-5 occupancy; enclosing a yard accessory to a
Group B, F, I, M or S occupancy

For SI: 1 foot = 304.8 mm.

Fences shall be designed and constructed to resist a horizontal wind pressure of not less than 30 pounds per square foot (1436 kN/m2) in addition to all other forces to which they may be subjected.

The use of barbed wire or razor wire at a height less than 8 feet (2438 mm) above the ground shall be prohibited.

Exception: Where wholly located on or over private property, the use of barbed wire or razor wire more than 7 feet (2134 mm) above the ground shall be allowed.

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