Skip to code content (skip section selection)
Compare to:
Chicago Overview
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
DIVISION 29 - PLUMBING 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.
18-29-902.4.
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 Roof extension.
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 through the wall.
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 Other vents.
18-29-916.3 Required sizes of vents.
18-29-916.4 Multiple branch vents.
18-29-916.4.1 Multiple branch vents exceeding 40 feet.
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 (18-29-1200 et seq.)
Article 13. Referenced Standards
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

You are viewing an archived code

Loading...
18-29-912.2.3  Long mains.
   Long mains shall be provided with additional relief vents located at intervals of every 100 feet (30.48 m).
18-29-912.2.4  Floor drains.
   Floor drains shall be vented at the end of the waste line or individually vented.
18-29-912.3  Size.
   The minimum size of a combination drain and vent pipe shall be in accordance with Table 18-29-912.3.
Table 18-29-912.3
Size of Combination Drain and Vent Pipe
(for Floor Drains Only)
Diameter Pipe (inches)
Maximum Number of Drainage Fixture Units
Connecting to a horizontal branch or stack
Connecting to a building drain or building subdrain
Diameter Pipe (inches)
Maximum Number of Drainage Fixture Units
Connecting to a horizontal branch or stack
Connecting to a building drain or building subdrain
2
3
4
2 1/2
6
26
3
12
31
4
20
50
5
160
250
6
360
575
 
For SI: 1 inch = 25.4 mm.
18-29-913  Island Fixture Venting.
18-29-913.1  Limitation.
   Island fixture venting shall not be permitted for fixtures other than sinks and lavatories. Residential kitchen sinks with a dishwasher waste connection, a food waste grinder, or both, in combination with the kitchen sink waste, shall be permitted to be vented in accordance with this section.
18-29-913.2  Vent connection.
   The island fixture vent shall connect to the fixture drain as required for an individual or common vent. The vent shall rise 6 inches (150 mm) vertically above the flood rim level of the fixture being vented before offsetting horizontally or vertically downward before connecting to the outside vent terminal.
18-29-913.3  Vent installation below the fixture flood level rim.
   The vent located below the flood level rim of the fixture being vented shall be installed as required for drainage piping in accordance with Article 7, except for sizing. The vent shall be sized in accordance with Section 18-29-916.2. The lowest point of the island fixture vent shall connect full size to the drainage system. The connection shall be to a vertical drain pipe or to the top half of a horizontal drain pipe. Clean-outs shall be provided in the island fixture vent to permit rodding of all vent piping located below the flood level rim of the fixtures. Rodding in both directions shall be permitted through a clean-out.
Loading...