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Prior Chicago Building Code
BUILDING CODE AND RELATED EXCERPTS OF THE MUNICIPAL CODE OF CHICAGO
DIVISION 1 - ADMINISTRATION
DIVISION 2 - DEFINITIONS
DIVISION 3 - USE AND OCCUPANCY CLASSIFICATIONS
DIVISION 4 - SPECIAL DETAILED REQUIREMENTS BASED ON USE AND OCCUPANCY
DIVISION 5 - GENERAL BUILDING HEIGHTS AND AREAS
DIVISION 6 - TYPES OF CONSTRUCTION
DIVISION 7 - FIRE-RESISTANCE-RATED CONSTRUCTION
DIVISION 8 - INTERIOR FINISHES (NA)
DIVISION 9 - FIRE PROTECTION SYSTEMS
DIVISION 10 - MEANS OF EGRESS
DIVISION 11 - ACCESSIBILITY
DIVISION 12 - INTERIOR ENVIRONMENT
DIVISION 13 - ENERGY EFFICIENCY AND ENVIRONMENTAL PROTECTION
DIVISION 14 - EXTERIOR WALLS (NA)
DIVISION 15 - ROOF ASSEMBLIES AND ROOFTOP STRUCTURES (NA)
DIVISION 16 - STRUCTURAL DESIGN
DIVISION 17 - STRUCTURAL TESTS AND SPECIAL INSPECTIONS
DIVISION 18 - SOILS AND FOUNDATIONS
DIVISION 19 - CONCRETE
DIVISION 20 - ALUMINUM (NA)
DIVISION 21 - MASONRY
DIVISION 22 - STEEL
DIVISION 23 - WOOD
DIVISION 24 - GLASS AND GLAZING (NA)
DIVISION 25 - GYPSUM BOARD AND PLASTER (NA)
DIVISION 26 - PLASTIC (NA)
DIVISION 27 - ELECTRICAL
DIVISION 28 - MECHANICAL SYSTEMS
CHAPTER 18-28 MECHANICAL SYSTEMS*
Article I. Administration (18-28-101 et seq.)
Article II. Definitions (18-28-201 et seq.)
Article III. General Regulations (18-28-301 et seq.)
Article IV. Ventilation (18-28-401 et seq.)
Article V. Exhaust Systems (18-28-501 et seq.)
Article VI. Duct Systems (18-28-601 et seq.)
Article VII. Combustion Air (18-28-701 et seq.)
Article VIII. Chimneys and Vents (18-28-801 et seq.)
Article IX. Specific Appliances, Fireplaces and Solid Fuel-Burning Equipment (18-28-901 et seq.)
18-28-901 General.
18-28-901.1 Scope.
18-28-901.2 General.
18-28-901.3 Hazardous locations.
18-28-901.4 Fireplace accessories.
18-28-901.5 Installation in private garages.
18-28-901.6 Borrowed light concept.
18-28-902 Masonry Fireplaces.
18-28-902.1 General.
18-28-902.2 Masonry fireplaces utilizing wood or other solid fuels.
18-28-902.3 Gas-fired log lighters.
18-28-902.3.1 Approval and installation.
18-28-902.3.2 Prohibited installations.
18-28-902.3.3 Combustion and circulating air.
18-28-903 Factory-Built Fireplaces.
18-28-903.1 General.
18-28-903.1.1 Additional combustion air.
18-28-903.1.2 Direct vent fireplaces.
18-28-903.1.3 Vented gas fireplaces (not including direct vent) located in habitable rooms (not including bathrooms and sleeping rooms).
18-28-903.1.4 Vented gas fireplaces (not including direct vent) located in bathrooms and sleeping rooms.
18-28-903.1.5 Unvented gas fireplaces.
18-28-903.2 Hearth extensions.
18-28-903.3 Unvented gas log heaters.
18-28-903.3.1 Decorative appliances for installation in vented fireplaces.
18-28-903.3.1.1 Prohibited installations.
18-28-903.3.1.2 Installation.
18-28-903.3.1.3.
18-28-903.3.1.4.
18-28-903.3.1.5 Fireplace screens.
18-28-903.3.2 Gas-fired log lighters.
18-28-903.3.2.1 Approval and installation.
18-28-903.3.2.2 Prohibited installations.
18-28-903.3.2.3 Combustion and circulating air.
18-28-904 Pellet Fuel-Burning Appliances.
18-28-904.1 General.
18-28-905 Fireplace Stoves and Room Heaters.
18-28-905.1 General.
18-28-905.1.1 Additional combustion air.
18-28-905.1.2 Direct vent gas room heaters.
18-28-905.1.3 Unvented gas room heaters.
18-28-905.2 Connection fireplace.
18-28-906 Factory-Built Barbecue Appliances.
18-28-906.1 General.
18-28-906.2 Natural gas barbecue grills located on balconies of multi-family buildings.
18-28-907 Incinerators and Crematories.
18-28-907.1 General.
18-28-908 Cooling Towers, Evaporative Condensers and Fluid Coolers.
18-28-908.1 General.
18-28-908.2 Access.
18-28-908.3 Location.
18-28-908.4 Support and anchorage.
18-28-908.5 Water supply.
18-28-908.6 Drainage.
18-28-908.7 Refrigerants and hazardous fluids.
18-28-909 Vented Wall Furnaces.
18-28-909.1 General.
18-28-909.2 Location.
18-28-909.3 Door swing.
18-28-909.4 Ducts prohibited.
18-28-909.5 Manual shutoff valve.
18-28-909.6 Access.
18-28-909.7 Combustion and circulating air.
18-28-909.8 Gas-fired vented wall furnaces.
18-28-909.9 Gas-fired direct-vent wall furnaces.
18-28-910 Floor Furnaces.
18-28-910.1 General.
18-28-910.2 Placement.
18-28-910.3 Bracing.
18-28-910.4 Clearance.
18-28-911 Duct Furnaces.
18-28-911.1 General.
18-28-911.2 Gas-fired duct furnaces.
18-28-911.2.1 Clearances.
18-28-911.2.2 Erection of equipment.
18-28-911.2.3 Access panels.
18-28-911.2.4 Location of draft hood and controls.
18-28-911.2.5 Circulating air.
18-28-911.2.6 Duct furnaces used with refrigeration systems.
18-28-912 Infrared Radiant Heaters.
18-28-912.1 Support.
18-28-912.2 Clearances.
18-28-912.3 Installation in commercial garages.
18-28-912.3.1 Parking structures.
18-28-912.3.2 Repair garages.
18-28-912.3.3 Installation in aircraft hangars.
18-28-913 Clothes Dryers.
18-28-913.1 General.
18-28-913.2 Exhaust required.
18-28-913.3 Clearances.
18-28-914 Sauna Heaters.
18-28-914.1 Location and protection.
18-28-914.1.1 Guards.
18-28-914.2 Installation.
18-28-914.2.1 Combustion and dilution air intakes.
18-28-914.2.2 Combustion and ventilation air.
18-28-914.3 Access.
18-28-914.4 Heat and time controls.
18-28-914.4.1 Timers.
18-28-914.5 Sauna room.
18-28-914.5.1 Warning notice.
18-28-915 Engine and Gas Turbine-Powered Equipment and Appliances.
18-28-915.1 General.
18-28-916 Pool and Spa Heaters.
18-28-916.1 General.
18-28-916.2 Gas-fired pool heaters.
18-28-916.2.1 Location.
18-28-916.2.2 Clearance.
18-28-916.2.3 Temperature- or pressure-limiting devices.
18-28-916.2.3.1.
18-28-916.2.3.2 Bypass valves.
18-28-916.2.3.3 Venting.
18-28-917 Cooking Appliances.
18-28-917.1 Cooking appliances.
18-28-917.2 Prohibited location.
18-28-917.3 Domestic appliances.
18-28-917.4 Gas-fired food service equipment, floor-mounted.
18-28-917.4.1 Clearance for listed equipment.
18-28-917.4.2 Clearance for unlisted equipment.
18-28-917.4.3 Mounting on combustible floor.
18-28-917.4.3.1
18-28-917.4.3.2
18-28-917.4.4 Mounting on noncombustible floor.
18-28-917.4.5 Combustible material adjacent to cooking top.
18-28-917.4.6 For use with casters.
18-28-917.4.7 Level installation.
18-28-917.4.8 Ventilation.
18-28-917.5 Gas-fired food service equipment - counter appliances.
18-28-917.5.1 Vertical clearance.
18-28-917.5.2 Clearance for listed appliances.
18-28-917.5.3 Clearance for unlisted appliances.
18-28-917.5.4 Mounting of unlisted appliances.
18-28-917.6 Gas-fired hot plates.
18-28-917.6.1
18-28-917.6.2
18-28-917.6.3.
18-28-917.7 Gas-fired household cooking appliances.
18-28-917.7.1 Floor-mounted units.
18-28-917.7.1.1 Clearance from combustible material.
18-28-917.7.1.2 Vertical clearance above cooking top.
18-28-917.7.1.3 Level installation.
18-28-917.7.2 Built-in units.
18-28-917.7.2.1 Installation.
18-28-917.7.2.2 Vertical clearance.
18-28-917.7.2.3 Horizontal clearance.
18-28-917.7.2.4 Level installation.
18-28-917.8 Gas-fired open-top broiler units.
18-28-917.8.1 Listed units.
18-28-917.8.2 Unlisted units.
18-28-917.8.3 Protection above domestic units.
18-28-917.8.4 Commercial units.
18-28-918 Forced-Air Warm-Air Furnaces.
18-28-918.1 Forced-air furnaces.
18-28-918.2 Minimum duct sizes.
18-28-918.3 Heat pumps.
18-28-918.4 Dampers.
18-28-918.5 Circulating air ducts for forced-air warm-air furnaces.
18-28-918.6 Prohibited sources.
18-28-918.7 Outside opening protection.
18-28-918.8 Return-air limitation.
18-28-918.9 Gas-fired forced-air, warm-air furnaces.
18-28-918.9.1 General.
18-28-918.9.2.
18-28-918.9.3 Clearance.
18-28-918.9.3.1.
18-28-918.9.3.2.
18-28-918.9.3.3.
18-28-918.9.3.4.
18-28-918.9.3.5.
18-28-918.9.4 Assembly and installation.
18-28-918.9.4.1.
18-28-918.9.4.2.
18-28-918.9.4.3
18-28-918.9.5 Combustion and circulating air.
18-28-918.9.5.1.
18-28-918.9.6 Furnace plenums and air ducts.
18-28-918.9.6.1.
18-28-918.10 Gas-fired horizontal furnaces above dropped ceilings.
18-28-918.11 Gas-fired furnaces located above bathrooms, toilet rooms or bedrooms.
18-28-919 Conversion Burners.
18-28-919.1 Conversion burners.
18-28-920 Unit Heaters.
18-28-920.1 General.
18-28-920.2 Support.
18-28-920.3 Ductwork.
18-28-920.4 Gas-fired unit heaters.
18-28-920.4.1 Support.
18-28-920.4.2 Clearance.
18-28-920.4.2.1 Suspended-type unit heaters.
18-28-920.4.2.2 Floor-mounted-type unit heaters.
18-28-920.4.3 Combustion and circulating air.
18-28-920.4.4 Ductwork.
18-28-920.4.5 Installation in commercial garages.
18-28-920.4.5.1 Parking structures.
18-28-920.4.5.2 Repair garages.
18-28-920.4.6 Installation in aircraft hangars.
18-28-921 Vented Room Heaters.
18-28-921.1 General.
18-28-922 Kerosene and Oil-Fired Stoves.
18-28-922.1 General.
18-28-923 Small Ceramic Kilns.
18-28-923.1 General.
18-28-923.1.1 Installation.
18-28-924 Stationary Fuel Cell Power Plants.
18-28-924.1 General.
18-28-924.2 Natural gas energized fuel cell power plants.
18-28-925 Gas-Fired Air Conditioners.
18-28-925.1 Independent gas piping.
18-28-925.2 Connection of gas engine-powered air conditioners.
18-28-925.3 Clearances for indoor installation.
18-28-925.4 Assembly and installation.
18-28-925.5 Furnace plenums and air ducts.
18-28-926 Non-Recirculating Direct Gas-Fired Industrial Air Heaters.
18-28-926.1 Application.
18-28-926.2 Prohibited installations.
18-28-926.2.1
18-28-926.2.2
18-28-926.3 Installation.
18-28-926.3.1
18-28-926.3.2
18-28-926.3.3
18-28-926.3.4
18-28-926.4 Clearance from combustible materials.
18-28-926.5 Air supply.
18-28-926.6 Atmospheric vents or gas reliefs or bleeds.
18-28-926.7 Relief openings.
18-28-926.7.1
18-28-926.7.2
18-28-926.8 Purging.
18-28-927 Recirculating Direct Gas-Fired Industrial Air Heaters.
18-28-927.1 Application.
18-28-927.2 Prohibited installations.
18-28-927.2.1
18-28-927.2.2
18-28-927.3 Installation.
18-28-927.4 Clearance from combustible materials.
18-28-927.5 Air supply.
18-28-927.6 Atmospheric vents, gas reliefs, or bleeds.
18-28-927.7 Relief openings.
18-28-927.7.1
18-28-927.7.2
18-28-927.8 Purging.
18-28-928 Gas-Fired Illuminating Appliances.
18-28-928.1 Clearances for listed appliances.
18-28-928.2 Clearances for unlisted appliances.
18-28-928.2.1 Enclosed type.
18-28-928.2.2 Open-flame type.
18-28-928.3 Mounting on buildings.
18-28-928.4 Mounting on posts.
18-28-928.5 Gas appliance pressure regulators.
18-28-929 Appliances for Installation in Manufactured Housing.
18-28-929.1
Article X. Boilers, Water Heaters and Pressure Vessels (18-28-1001 et seq.)
Article XI. Refrigeration (18-28-1101 et seq.)
Article XII. Hydronic Piping (18-28-1200 et seq.)
Article XIII. Fuel Oil Piping and Storage (18-28-1301 et seq.)
Article XIV. Fuel-Gas Piping (18-28-1401 et seq.)
Article XV. Solar Systems (18-28-1501 et seq.)
DIVISION 29 - PLUMBING SYSTEMS
DIVISION 30 - ELEVATORS AND CONVEYING SYSTEMS
DIVISION 31 - SPECIAL CONSTRUCTION (NA)
DIVISION 32 - ENCROACHMENTS INTO THE PUBLIC RIGHT-OF-WAY
DIVISION 33 - SAFEGUARDS DURING CONSTRUCTION
DIVISION 34 - EXISTING STRUCTURES
DIVISION 35 - REFERENCED STANDARDS

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18-28-928.2.1  Enclosed type.
   Clearance shall comply with the following:
   1.   Unlisted enclosed illuminating appliances installed outdoors shall be installed with clearances in any direction from combustible material of not less than 12 inches ( 300 mm).
   2.   Unlisted enclosed illuminating appliances installed indoors shall be installed with clearances in any direction from combustible material of not less than 18 inches (460 mm).
18-28-928.2.2  Open-flame type.
   Clearance shall comply with the following:
   1.   Unlisted open-flame illuminating appliances installed outdoors shall have clearances from combustible material not less than that specified in Table 18-28-928.2.2(1). The distance from ground level to the base of the burner shall be a minimum of 7 feet (2.1 m) where installed within 2 feet (0.6 m) of walkways. Lesser clearances shall be permitted to be used where acceptable to the authority having jurisdiction.
Table 18-28-928.2.2(1)
Table Clearances for Unlisted Outdoor Open- Flame Illuminating Appliances
 
Flame Height Above Burner Head (in.)
Minimum Clearance from Combustible Material (ft)*
Horizontal
Vertical
12
2
6
18
3
8
24
3
10
30
4
12
 
For SI units: 1 in. = 25.4 mm; 1 ft = 0.305 m.
* Measured from the nearest portion of the burner head.
   2.   Unlisted open-flame illuminating appliances installed outdoors shall be equipped with a limiting orifice or other limiting devices that will maintain a flame height consistent with the clearance from combustible material as given in Table 18-28-928.2.2(1).
   3.   Appliances designed for flame heights in excess of 30 inches (760 mm) shall be permitted to be installed if acceptable to the authority having jurisdiction. Such appliances shall be equipped with a safety shutoff device or automatic ignition.
   4.   Unlisted open-flame illuminating appliances installed indoors shall have clearances from combustible material acceptable to the authority having jurisdiction.
18-28-928.3  Mounting on buildings.
   Illuminating appliances designed for wall or ceiling mounting shall be securely attached to substantial structures in such a manner that they are not dependent on the gas piping for support.
18-28-928.4  Mounting on posts.
   Illuminating appliances designed for post mounting shall be securely and rigidly attached to a post. Posts shall be rigidly mounted. The strength and rigidity of posts greater than 3 feet (0.9 m) in height shall be at least equivalent to that of a 2 1/2 inches (64 mm) diameter post constructed of 0.064 inch (1.6 mm) thick steel or a 1 inch (25 mm) schedule 40 steel pipe. Posts 3 feet (0.9 m) or less in height shall not be smaller than a 3/4 inch (20 mm) Schedule 40 steel pipe. Drain openings shall be provided near the base of posts where there is a possibility of water collecting inside them.
18-28-928.5  Gas appliance pressure regulators.
   Where a gas appliance pressure regulator is not supplied with an illuminating appliance and the service line is not equipped with a service pressure regulator, an appliance pressure regulator shall be installed in the line serving one or more illuminating appliances.
18-28-929  Appliances for Installation in Manufactured Housing.
18-28-929.1
   Appliances installed in manufactured housing after the initial sale shall be listed for installation in manufactured housing, or approved, and shall be installed in accordance with the requirements of the building code and the manufacturers' installation instructions. Appliances installed in the living space of manufactured housing shall be in accordance with the requirements of Article 7, Combustion Air.
Article X.  Boilers, Water Heaters and Pressure Vessels (18-28-1001 et seq.)
18-28-1001  General.
18-28-1001.1  Scope.
   This article shall govern the installation, alteration and repair of fired and unfired pressure vessels that fall under the jurisdiction of the ASME Code.
18-28-1002  Water Heaters.
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