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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.)
18-28-801 General.
18-28-801.1 Scope.
18-28-801.2 General.
18-28-801.2.1 Oil-fired appliances.
18-28-801.3 Masonry chimneys
18-28-801.4 Positive flow.
18-28-801.5 Design.
18-28-801.6 Minimum size of chimney or vent.
18-28-801.7 Solid fuel appliance flues.
18-28-801.8 Abandoned inlet openings.
18-28-801.9 Positive pressure.
18-28-801.10 Connection to fireplace.
18-28-801.10.1 Closure and access.
18-28-801.10.2 Connection to factory-built fireplace flue.
18-28-801.10.3 Connection to masonry fireplace flue.
18-28-801.11 Multiple solid fuel prohibited.
18-28-801.12 Chimney entrance.
18-28-801.13 Cleanouts.
18-28-801.14 Connections to exhauster.
18-28-801.15 Fuel-fired appliances.
18-28-801.16 Flue lining.
18-28-801.16.1 Residential and low-heat appliances (general).
18-28-801.17 Space around lining.
18-28-801.18 Existing chimneys and vents.
18-28-801.18.1 Size.
18-28-801.18.2 Flue passageways.
18-28-801.18.3 Cleanout.
18-28-801.18.4 Clearances.
18-28-801.19 Multistory prohibited.
18-28-802 Vents.
18-28-802.1 General.
18-28-802.2 Vent application.
18-28-802.3 Installation.
18-28-802.4 Vent termination caps required.
18-28-802.5 Type L vent terminations.
18-28-802.6 Minimum vent heights.
18-28-802.7 Support of vents.
18-28-802.8 Installation shield.
18-28-803 Connectors.
18-28-803.1 Connectors required.
18-28-803.2 Location.
18-28-803.3 Size.
18-28-803.4 Branch connectors.
18-28-803.5 Manual dampers.
18-28-803.6 Automatic dampers.
18-28-803.7 Connectors serving two or more appliances.
18-28-803.8 Vent connector construction.
18-28-803.9 Chimney connector construction.
18-28-803.10 Installation.
18-28-803.10.1 Supports and joints.
18-28-803.10.2 Length.
18-28-803.10.3 Connection.
18-28-803.10.4 Connector pass-through.
18-28-803.10.5 Pitch.
18-28-803.10.6 Clearances.
18-28-804 Direct-Vent, Integral Vent, Mechanical Vent and Ventilation/Exhaust Hood Venting.
18-28-804.1 Direct-vent terminations.
18-28-804.2 Appliances with integral vents.
18-28-804.2.1 Terminal clearances.
18-28-804.3 Mechanical draft systems.
18-28-804.3.1 Forced draft systems.
18-28-804.3.2 Automatic shutoff.
18-28-804.3.3 Termination.
18-28-804.3.4 Horizontal terminations.
18-28-804.3.5 Vertical terminations.
18-28-804.3.6 Exhauster connections.
18-28-804.3.7 Exhauster sizing.
18-28-805 Factory Built Chimneys.
18-28-805.1 Listing.
18-28-805.2 Solid fuel appliances.
18-28-805.3 Factory-built fireplaces.
18-28-805.4 Support.
18-28-805.5 Medium-heat appliances.
18-28-805.6 Decorative shrouds.
18-28-806 Metal Chimneys.
18-28-806.1 General.
18-28-807 Engine Generator Exhaust Systems.
18-28-807.1.
18-28-807.1.1.
18-28-807.1.2.
18-28-807.1.3.
18-28-807.1.4.
18-28-807.1.5.
18-28-807.1.6.
18-28-807.2 Exhaust systems termination.
Article IX. Specific Appliances, Fireplaces and Solid Fuel-Burning Equipment (18-28-901 et seq.)
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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18-28-807.1.
   This section applies to venting of the products of combustion of stationary combustion engines and gas turbines.
18-28-807.1.1.
   Engine generator exhaust systems shall be designed and constructed such that the system can withstand the anticipated exhaust gas temperature.
18-28-807.1.2.
   Exhaust systems shall include provisions to prevent damage caused by ignition of unburned fuel.
18-28-807.1.3.
   Low points of exhaust systems shall have suitable drains.
18-28-807.1.4.
   Exhaust systems shall be connected to the engine to prevent the escape of sparks, flame or flue gas within the structure.
18-28-807.1.5.
   Where necessary, engine generator exhaust systems shall have one or more flexible connectors to minimize the possibility of a leak in the engine exhaust system because of engine vibration or thermal expansion.
18-28-807.1.6.
   Exhaust systems shall be metal, masonry, or factory built chimney.

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