Exhaust Systems (18-28-501 et seq.)
Municipal Code of Chicago tit. 18, ch. 18-28, art. V
in effectContents
section18-28-501.1. Scope.section18-28-501.2. Independent system required.section18-28-501.3. Outdoor discharge.section18-28-501.4. Pressure equalization.section18-28-501.5. Ducts.section18-28-502.1. General.section18-28-502.1.1. Exhaust location.section18-28-502.1.2. Fuel-dispensing areas.section18-28-502.1.3. Equipment, appliance and service rooms.section18-28-502.1.4. Hazardous exhaust.section18-28-502.2. Aircraft fueling and defueling.section18-28-502.3. Battery-charging areas for powered industrial trucks and equipment.section18-28-502.4. Stationary storage battery systems.section18-28-502.4.1. Reserved. Editor's note – Coun. J. 9-14-21, p. 35949, Art. V, § 3, repealed § 18-28-502.4.1, which pertained to hydrogen limit.section18-28-502.4.2. Reserved. Editor's note – Coun. J. 9-14-21, p. 35949, Art. V, § 3, repealed § 18-28-502.4.2, which pertained to ventilation rate.section18-28-502.5. Dry cleaning plants.section18-28-502.5.1. Type II systems.section18-28-502.5.2. Type IV and V systems.section18-28-502.5.3. Spotting and pretreating.section18-28-502.6. Application of flammable finishes.section18-28-502.6.1. During construction.section18-28-502.6.2. Limited spraying spaces.section18-28-502.6.3. Spraying areas.section18-28-502.6.3.1. Operation.section18-28-502.6.3.2. Recirculation.section18-28-502.6.3.3. Air velocity.section18-28-502.6.3.4. Ventilation obstruction.section18-28-502.6.3.5. Independent ducts.section18-28-502.6.3.6. Termination point.section18-28-502.6.3.7. Fan motors and belts.section18-28-502.6.4. Dipping operations.section18-28-502.6.5. Electrostatic apparatus.section18-28-502.6.6. Powder coating.section18-28-502.6.7. Floor resurfacing operations.section18-28-502.7. Hazardous materials - general requirements.section18-28-502.7.1. Storage in excess of the maximum allowable quantities.section18-28-502.7.1.1. System requirements.section18-28-502.7.2. Gas rooms, exhausted enclosures and gas cabinets.section18-28-502.7.3. Indoor dispensing and use.section18-28-502.7.4. Indoor dispensing and use - point sources.section18-28-502.7.5. Closed systems.section18-28-502.8. Hazardous materials - requirements for specific materials.section18-28-502.8.1. Compressed gases - medical gas systems.section18-28-502.8.2. Corrosives.section18-28-502.8.3. Cryogenics.section18-28-502.8.4. Explosives.section18-28-502.8.5. Flammable and combustible liquids.section18-28-502.8.5.1. Vaults.section18-28-502.8.5.2. Storage rooms and warehouses.section18-28-502.8.5.3. Cleaning machines.section18-28-502.8.5.4. Use, dispensing and mixing.section18-28-502.8.5.5. Bulk plants or terminals.section18-28-502.8.5.5.1. General.section18-28-502.8.5.5.2. Basements and pits.section18-28-502.8.5.5.3. Dispensing of Class I liquids.section18-28-502.8.6. Highly toxic and toxic liquids.section18-28-502.8.6.1. Treatment system.section18-28-502.8.6.2. Open and closed systems.section18-28-502.8.7. High toxic and toxic compressed - any quantity.section18-28-502.8.7.1. Gas cabinets.section18-28-502.8.7.2. Exhausted enclosures.section18-28-502.8.8. Highly toxic and toxic compressed gases - quantities exceeding the maximum allowable per control area.section18-28-502.8.8.1. Ventilated areas.section18-28-502.8.8.2. Local exhaust for portable tanks.section18-28-502.8.8.3. Piping and controls - stationary tanks.section18-28-502.8.8.4. Gas rooms.section18-28-502.8.8.5. Treatment system.section18-28-502.8.8.6. Process equipment.section18-28-502.8.9. Ozone gas generators.section18-28-502.8.10. LP-gas distribution facilities.section18-28-502.8.10.1. Portable container use.section18-28-502.8.11. Silane gas.section18-28-502.9. Hazardous production materials (HPM).section18-28-502.9.1. Where required.section18-28-502.9.2. Penetrations.section18-28-502.9.3. Treatment systems.section18-28-502.10. Motion picture projectors.section18-28-502.10.1. Projectors with an exhaust discharge.section18-28-502.10.2. Projectors without exhaust connection.section18-28-502.11. Organic coating processes.section18-28-502.12. Public garages.section18-28-502.13. Motor vehicle operation.section18-28-502.14. Repair garages.section18-28-502.15. Repair garages for natural gas- and hydrogen-fueled vehicles.section18-28-502.15.1. Design.section18-28-502.15.2. Operation.section18-28-502.16. Tire rebuilding or recapping.section18-28-502.16.1. Buffing machines.section18-28-502.17. Specific rooms.section18-28-503.1. General.section18-28-503.2. Fans.section18-28-503.3. Equipment and appliances identification plate.section18-28-503.4. Corrosion-resistant fans.section18-28-504.1. Installation.section18-28-504.2. Exhaust penetrations.section18-28-504.3. Cleanout.section18-28-504.4. Exhaust installation.section18-28-504.4.1. Termination location.section18-28-504.4.2. Exhaust termination outlet and passageway size.section18-28-504.5. Dryer exhaust power ventilators.section18-28-504.6. Booster fans prohibited.section18-28-504.7. Makeup air.section18-28-504.8. Protection required.section18-28-504.9. Domestic clothes dryer ducts.section18-28-504.9.1. Material and size.section18-28-504.9.2. Duct installation.section18-28-504.9.3. Transition ducts.section18-28-504.9.4. Duct length.section18-28-504.9.4.1. Specified length.section18-28-504.9.4.2. Manufacturer's instructions.section18-28-504.9.4.3. Dryer exhaust duct power ventilator length.section18-28-504.9.5. Length identification.section18-28-504.9.6. Exhaust duct required.section18-28-504.10. Commercial clothes dryers.section18-28-504.11. Common exhaust systems for clothes dryers located in multistory structures.section18-28-505.1. General.section18-28-505.2. Domestic cooking exhaust.section18-28-505.3. Exhaust ducts.section18-28-505.4. Makeup air required.section18-28-505.5. Common exhaust systems for domestic kitchens located in multistory structures.section18-28-505.6. Other than Group R.section18-28-506.1. General.section18-28-506.2. Corrosion protection.section18-28-506.3. Ducts serving Type I hoods.section18-28-506.3.1. Exhaust fans.section18-28-506.3.1.1. Fan motor.section18-28-506.3.2. Grease duct materials.section18-28-506.3.3. Joints, seams and penetrations of grease ducts.section18-28-506.3.3.1. Duct joint types.section18-28-506.3.3.2. Duct-to-hood joints.section18-28-506.3.3.3. Duct-to-exhaust fan connections.section18-28-506.3.3.4. Vibration isolation.section18-28-506.3.4. Grease duct supports.section18-28-506.3.5. Air velocity.section18-28-506.3.6. Separation of grease duct system.section18-28-506.3.7. Clearances.section18-28-506.3.8. Prevention of grease accumulation.section18-28-506.3.9. Cleanouts and other openings.section18-28-506.3.9.1. Personnel entry.section18-28-506.3.10. Horizontal cleanouts.section18-28-506.3.11. Duct enclosure.section18-28-506.3.12. Fire-resistive access opening.section18-28-506.3.13. Type I exhaust outlets.section18-28-506.3.13.1. Termination above the roof.section18-28-506.3.13.2. Termination through an exterior wall.section18-28-506.3.13.3. Termination location.section18-28-506.4. Ducts serving Type II hoods.section18-28-506.4.1. Type II exhaust outlets.section18-28-506.4.2. Ducts.section18-28-506.5. Exhaust equipment.section18-28-506.5.1. Exhaust fans.section18-28-506.5.1.1. Fan motor.section18-28-506.5.1.2. In-line fan location.section18-28-506.5.2. Pollution-control units.section18-28-506.5.3. Exhaust fan discharge.section18-28-506.5.4. Exhaust fan mounting.section18-28-506.5.5. Clearances.section18-28-506.5.6. Termination location.section18-28-507.1. General.section18-28-507.2. Where required.section18-28-507.2.1. Type I and Type II hoods.section18-28-507.2.2. Domestic cooking appliances used for commercial purposes.section18-28-507.2.3. Solid fuel.section18-28-507.3. Fuel-burning appliances.section18-28-507.4. Type I materials.section18-28-507.5. Type II hood materials.section18-28-507.6. Supports.section18-28-507.7. Hood joints, seams and penetrations.section18-28-507.7.1. Type I hoods.section18-28-507.7.2. Type II hoods.section18-28-507.8. Cleaning and grease gutters.section18-28-507.9. Clearances for Type I hood.section18-28-507.10. Hoods penetrating a ceiling.section18-28-507.11. Grease filters.section18-28-507.11.1. Criteria.section18-28-507.11.2. Mounting position.section18-28-507.12. Canopy size and location.section18-28-507.13. Capacity of hoods.section18-28-507.13.1. Solid fuel-burning cooking appliances.section18-28-507.13.2. High temperature.section18-28-507.13.3. Medium temperature.section18-28-507.13.4. Low temperature.section18-28-507.14. Noncanopy size and location.section18-28-507.15. Capacity for noncanopy hoods.section18-28-507.16. Exhaust outlets.section18-28-507.17. Performance test.section18-28-508.1. Makeup air.section18-28-508.1.1. Makeup air temperature.section18-28-508.2. Compensating hoods.section18-28-509.1. Where required.section18-28-510.1. General.section18-28-510.2. Where required.section18-28-510.2.1. Lumber yards and woodworking facilities.section18-28-510.2.2. Combustible fibers.section18-28-510.3. Design and operation.section18-28-510.4. Independent system.section18-28-510.5. Design.section18-28-510.5.1. Balancing.section18-28-510.5.2. Emission control.section18-28-510.5.3. Hoods required.section18-28-510.5.4. Contaminant capture and dilution.section18-28-510.5.5. Makeup air.section18-28-510.5.6. Clearances.section18-28-510.5.7. Ducts.section18-28-510.6. Penetrations.section18-28-510.7. Suppression required.section18-28-510.8. Duct construction.section18-28-510.8.1. Duct joints.section18-28-510.8.2. Clearance to combustibles.section18-28-510.8.3. Explosion relief.section18-28-510.9. Supports.section18-28-511.1. Dust, stock and refuse conveying systems.section18-28-511.1.1. Collectors and separators.section18-28-511.1.2. Discharge pipe.section18-28-511.1.3. Conveying system exhaust discharge.section18-28-511.1.4. Spark protection.section18-28-511.1.5. Explosion relief vents.section18-28-511.1.5.1. Screens.section18-28-511.1.5.2. Hoods.section18-28-511.2. Exhaust outlets.section18-28-512.1. General.section18-28-512.2. Materials.section18-28-512.3. Grade.section18-28-512.4. Termination.section18-28-512.5. Identification.section18-28-513.1. Atriums.section18-28-513.2. through 18-28-513.20.3 Deliberately omitted.section18-28-514.1. General.section18-28-514.2. Prohibited applications.section18-28-514.3. Access.section18-28-514.4. Recirculated air.
Source: City of Chicago, Municipal Code of Chicago (American Legal Publishing, codelibrary.amlegal.com)URL: https://codelibrary.amlegal.com/codes/chicago/latest/chicago_il/0-0-0-2686981Fetched: 10/24/2026