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Municipal Code of Chicago
MUNICIPAL CODE OF CHICAGO
TITLE 1 GENERAL PROVISIONS
TITLE 2 CITY GOVERNMENT AND ADMINISTRATION
TITLE 3 REVENUE AND FINANCE
TITLE 4 BUSINESSES, OCCUPATIONS AND CONSUMER PROTECTION
TITLE 5 HOUSING AND ECONOMIC DEVELOPMENT
TITLE 6 HUMAN RIGHTS*
TITLE 7 HEALTH AND SAFETY
TITLE 8 OFFENSES AFFECTING PUBLIC PEACE, MORALS AND WELFARE
TITLE 9 VEHICLES, TRAFFIC AND RAIL TRANSPORTATION
TITLE 10 STREETS, PUBLIC WAYS, PARKS, AIRPORTS AND HARBORS
TITLE 11 UTILITIES AND ENVIRONMENTAL PROTECTION
TITLE 12 RESERVED
TITLE 13 BUILDINGS AND CONSTRUCTION
TITLE 14 RESERVED*
TITLE 14A ADMINISTRATIVE PROVISIONS OF THE CHICAGO CONSTRUCTION CODES*
TITLE 14B BUILDING CODE*
TITLE 14C CONVEYANCE DEVICE CODE*
TITLE 14E ELECTRICAL CODE*
TITLE 14F FIRE PREVENTION CODE*
TITLE 14G FUEL GAS CODE*
TITLE 14M MECHANICAL CODE*
TITLE 14N 2022 ENERGY TRANSFORMATION CODE*
TITLE 14P PLUMBING CODE*
TITLE 14R BUILDING REHABILITATION CODE*
TITLE 14X MINIMUM REQUIREMENTS FOR EXISTING BUILDINGS*
TITLE 15 FIRE PREVENTION
TITLE 16 LAND USE
TITLE 17 CHICAGO ZONING ORDINANCE
TITLE 18 BUILDING INFRASTRUCTURE
CHAPTER 18-11 RESERVED*
CHAPTER 18-13 RESERVED*
CHAPTER 18-14 BUILDING ENERGY USE BENCHMARKING
CHAPTER 18-27 RESERVED*
CHAPTER 18-28 MECHANICAL SYSTEMS*
CHAPTER 18-29 PLUMBING*
Article 1. Administration (18-29-101 et seq.)
Article 2. Definitions (18-29-201 et seq.)
Article 3. General Regulations (18-29-301 et seq.)
Article 4. Fixtures, Faucets and Fixture Fittings (18-29-401 et seq.)
Article 5. Water Heaters (18-29-501 et seq.)
Article 6. Water Supply and Distribution (18-29-601 et seq.)
Article 7. Sanitary Drainage (18-29-701 et seq.)
Article 8. Indirect/Special Waste (18-29-801 et seq.)
Article 9. Vents (18-29-901 et seq.)
18-29-901 General.
18-29-901.1 Scope.
18-29-901.2 Trap seal protection.
18-29-901.2.1 Venting required.
18-29-901.3 Chemical waste vent system.
18-29-901.4 Use limitations.
18-29-901.5 Tests.
18-29-901.6 Protection from freezing.
18-29-902 Materials.
18-29-902.1 Vents.
18-29-902.2 Sheet copper.
18-29-902.3 Sheet lead.
18-29-903 Vent Stacks and Stack Vents.
18-29-903.1 Main vent required.
18-29-903.2 Vent stack required.
18-29-903.3 Vent termination.
18-29-903.4 Vent connection at base.
18-29-903.5 Vent headers.
18-29-904 Vent Terminals.
18-29-904.1 Vent terminals required.
18-29-904.1.1 Roof extension unprotected.
18-29-904.1.2 Occupiable rooftop.
18-29-904.1.3 Reserved.
18-29-904.1.4 Sidewall vent terminal.
18-29-904.2 Frost closure.
18-29-904.3 Flashings.
18-29-904.4 Prohibited use.
18-29-904.5 Location of vent terminal.
18-29-904.6 Extension outside a structure.
18-29-905 Vent Connections and Grades.
18-29-905.1 Connection.
18-29-905.2 Grade.
18-29-905.3 Vent connection to drainage system.
18-29-905.4 Vertical rise of vent.
18-29-905.5 Height above fixtures.
18-29-905.6 Side inlet.
18-29-905.7 Vent for future fixtures.
18-29-906 Fixture Vents.
18-29-906.1 Distance of trap from vent.
18-29-906.2 Venting of fixture drains.
18-29-906.3 Crown vent.
18-29-907 Individual Vent.
18-29-907.1 Individual vent permitted.
18-29-908 Common Vent.
18-29-908.1 Individual vent as common vent.
18-29-908.2 Connection at the same level.
18-29-908.3 Connection of different levels.
18-29-909 Deliberately omitted.
18-29-910 Deliberately omitted.
18-29-911 Deliberately omitted.
18-29-912 Combination Drain and Vent System.
18-29-912.1 Type of fixtures.
18-29-912.2 Waste piping and trap.
18-29-912.2.1 Branches.
18-29-912.2.2 Sinks, lavatories, and other fixtures.
18-29-912.2.3 Long mains.
18-29-912.2.4 Floor drains.
18-29-912.3 Size.
18-29-913 Island Fixture Venting.
18-29-913.1 Limitation.
18-29-913.2 Vent connection.
18-29-913.3 Vent installation below the fixture flood level rim.
18-29-914 Relief Vents - Stacks of More Than 10 Branch Intervals.
18-29-914.1 Where required.
18-29-914.2 Size and connection.
18-29-915 Vents for Stack Offsets.
18-29-915.1 Vent for horizontal offset of drainage stack.
18-29-915.2 Upper section.
18-29-915.3 Lower section.
18-29-916 Vent Pipe Sizing.
18-29-916.1 Size of stack vents and vent stacks.
18-29-916.2 Vents other than stack vents or vent stacks.
18-29-916.3 Developed length.
18-29-916.4 Multiple branch vents.
18-29-916.4.1 Reserved.
18-29-916.5 Sump vents.
18-29-916.5.1 Sewage pumps and sewage ejectors other than pneumatic.
18-29-916.5.2 Pneumatic sewage ejectors.
18-29-917 Vents Not Required.
18-29-917.1 Not required.
18-29-918 Deliberately omitted.
Article 10. Traps, Separators and Interceptors (18-29-1001 et seq.)
Article 11. Storm Drainage (18-29-1101 et seq.)
Article 12. Swimming Pools and Other Swimming Facilities* (18-29-1201 et seq.)
Article 13. Referenced Standards
Appendix A Procedures for Calculating the Minimum Sizing of the Water Supply System
CHAPTER 18-30 RESERVED*
CHAPTER 18-31 RESERVED*
CHAPTER 18-32 RESERVED*
CHAPTER 18-36 REFERENCE STANDARDS*
APPENDIX TO THE MUNICIPAL CODE OF CHICAGO (RESERVED)*
TABLES
Chicago Zoning Ordinance and Land Use Ordinance
CHICAGO ZONING ORDINANCE AND LAND USE ORDINANCE
TITLE 16 LAND USE
TITLE 17 CHICAGO ZONING ORDINANCE
18-29-901.5 Tests.
   The vent system shall be tested in accordance with Sections 18-29-312.1 through 18-29-312.2.
18-29-901.6 Protection from freezing.
   All vent pipes shall be adequately protected from freezing or adequately sized to account for frost build- up.
18-29-902 Materials.
18-29-902.1 Vents.
   The materials and methods utilized for the construction and installation of venting systems shall comply with the applicable provisions of Section 18-29-702.
(Amend Coun. J. 10-14-21, p. 37722, Art. IX, § 1)
18-29-902.2 Sheet copper.
   Sheet copper for vent pipe flashings shall conform to ASTM B152 and shall weigh not less than 8 ounces per square foot (2.5 kg/m 2 ).
18-29-902.3 Sheet lead.
   Sheet lead for vent pipe flashings shall weigh not less than 3 pounds per square foot (15 kg/m 2 ) for field-constructed flashings and not less than 2 1/2 pounds per square foot (12 kg/m 2 ) for prefabricated flashings.
18-29-903 Vent Stacks and Stack Vents.

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