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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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18-28-917.4.2  Clearance for unlisted equipment.
   Unlisted floor-mounted food service equipment shall be installed to provide a clearance to combustible material of not less than 18 inches(460 mm) from the sides and rear of the equipment and from the vent connector and not less than 48 inches (1.2 m) above cooking tops and at the front of the equipment. Clearances for unlisted equipment installed in partially enclosed areas such as alcoves shall not be reduced.
18-28-917.4.3  Mounting on combustible floor.
18-28-917.4.3.1
   Listed floor-mounted food service equipment that is listed specifically for installation on floors constructed of combustible material shall be permitted to be mounted on combustible floors in accordance with its listing and the manufacturer' s instructions.
18-28-917.4.3.2
   Floor-mounted food service equipment that is not listed for mounting on a combustible floor shall be mounted in accordance with 18-28-917.4.4 or be mounted in accordance with one of the following:
   1.   Where the equipment is set on legs that provide not less than 18 inches (460 mm) open space under the base of the equipment or where it has no burners and no portion of any oven or broiler within 18 inches (460 mm) of the floor, it shall be permitted to be mounted on a combustible floor without special floor protection, provided there is at least one sheet metal baffle between the burner and the floor.
   2.   Where the equipment is set on legs that provide not less than 8 inches (200 mm) open space under the base of the equipment, it shall be permitted to be mounted on combustible floors, provided the floor under the equipment is protected with not less than 3/8 inch (9.5 mm) insulating millboard covered with sheet metal not less than 0.0195 inches (0.5 mm) thick. The preceding specified floor protection shall extend not less than 6 inches (150 mm) beyond the equipment on all sides.
   3.   Where the equipment is set on legs that provide not less than 4 inches (100 mm) under the base of the equipment, it shall be permitted to be mounted on combustible floors provided the floor under the equipment is protected with hollow masonry not less than 4 inches (100 mm) in thickness covered with sheet metal not less than 0.0195 inches (0.5 mm) thick. Such masonry courses shall be laid with ends unsealed and joints matched in such a way as to provide for free circulation of air through the masonry.
   4.   Where the equipment does not have legs at least 4 inches (100 mm) high, it shall be permitted to be mounted on combustible floors, provided the floor under the equipment is protected by two courses of 4 inches (100 mm) hollow clay tile, or equivalent, with courses laid at right angles and with ends unsealed and joints matched in such a way as to provide for free circulation of air through such masonry courses, and covered with steel plate not less than 3/16 inch (4.8 mm) in thickness.
18-28-917.4.4  Mounting on noncombustible floor.
   Listed floor-mounted food service equipment that is designed and marked “For use only in noncombustible locations” shall be mounted on floors of noncombustible construction with noncombustible flooring and surface finish and with no combustible material against the underside thereof, or on noncombustible slabs or arches having no combustible material against the underside thereof. Such construction shall in all cases extend not less than 12 inches (300 mm) beyond the equipment on all sides.
18-28-917.4.5  Combustible material adjacent to cooking top.
   Any portion of combustible material adjacent to a cooking top section of a food service range, even through listed for close-to-wall installation, that is not shielded from the wall by a high shelf, warming closet, and so on, shall be protected as specified in 18-28-917.4.2 for a distance of at least 2 feet (0.6 m) above the surface of the cooking top.
18-28-917.4.6  For use with casters.
   Floor-mounted equipment with casters shall be listed for such construction and shall be installed in accordance with their listing and the accompanying instructions for limiting the movement of the equipment to prevent strain on the connection.
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