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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
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.)
18-29-601 General.
18-29-601.1 Scope.
18-29-601.2 Inspections and notices.
18-29-601.3 Access for inspections.
18-29-601.4 Solar energy utilization.
18-29-602 Water Required.
18-29-602.1 General.
18-29-602.1.1 Obligations of water consumers.
18-29-602.2 Potable water required.
18-29-602.3 Deliberately omitted.
18-29-602.4 Reserve water supply.
18-29-602.4.1 Installation of line valves or taps.
18-29-602.4.2 Dual meter settings.
18-29-603 Water Service.
18-29-603.1 Size of water service pipe.
18-29-603.1.1 Size and meter spreader connection.
18-29-603.1.2 Sizing of connections.
18-29-603.1.3 Permits to install water supply in buildings.
18-29-603.2 Separation of water service and building sewer/drain.
18-29-603.2.1 Water supply systems installed near a sewer structure.
18-29-603.2.2 Reserved.
18-29-603.2.3 Backfill.
18-29-603.3 Metered service.
18-29-603.3.1 Authority.
18-29-603.3.2 Connection to metered service.
18-29-603.3.3 Licensed and bonded contractor.
18-29-603.3.4 Location.
18-29-603.3.5 Construction of meter vaults.
18-29-603.3.6 Installation of taps.
18-29-603.3.7 Plans accompany permit application.
18-29-603.3.8 Notification of wrecking buildings for terminating water service.
18-29-604 Design of Building Water Distribution System.
18-29-604.1 General.
18-29-604.2 System interconnection.
18-29-604.3 Water distribution system design criteria.
18-29-604.4 Maximum flow and water consumption.
18-29-604.4.1 Deliberately omitted.*
18-29-604.4.2 Water closets.
18-29-604.5 Size of fixture supply.
18-29-604.5.1 Minimum size.
18-29-604.6 Variable street pressures.
18-29-604.7 Inadequate water pressure.
18-29-604.8 Water pressure reducing valve or regulator.
18-29-604.8.1 Valve design.
18-29-604.8.2 Repair and removal.
18-29-604.9 Deliberately omitted.
18-29-604.10 Size of water supply pipes.
18-29-604.10.1 Minimum sizes of branch distributing pipes for fixtures and appliances.
18-29-604.10.1.1 Demand load.
18-29-604.10.1.2 Size of piping.
18-29-604.10.1.3 Available pressure.
18-29-604.10.2 Procedures for calculating sizing.
18-29-604.11 Air chambers required.
18-29-604.11.1 Size of air chamber.
18-29-605 Materials, Joints and Connections.
18-29-605.1 Water compatibility.
18-29-605.2 Soil and ground water.
18-29-605.3 Lead content of water supply pipe and fittings.
18-29-605.4 Water service pipe.
18-29-605.4.1 Materials for supply pipes and fittings.
18-29-605.5 Water distribution pipe.
18-29-605.6 Fittings.
18-29-605.7 Valves.
18-29-605.8 Manufactured pipe nipples.
18-29-605.9 Prohibited joints and connections.
18-29-605.10 Deliberately omitted.
18-29-605.11 Deliberately omitted.
18-29-605.12 Brass.
18-29-605.12.1 Brazed joints.
18-29-605.12.2 Mechanical joints.
18-29-605.12.3 Threaded joints.
18-29-605.12.4 Welded joints.
18-29-605.13 Gray iron and ductile iron joints.
18-29-605.14 Copper pipe.
18-29-605.14.1 Deliberately omitted.
18-29-605.14.2 Deliberately omitted.
18-29-605.14.3 Soldered joints.
18-29-605.15 Copper tubing.
18-29-605.15.1 Brazed joints.
18-29-605.15.2 Flared joints.
18-29-605.15.3 Mechanical joints.
18-29-605.15.4 Soldered joints.
18-29-605.16 CPVC plastic.
18-29-605.16.1 Mechanical joints.
18-29-605.16.2 Solvent cementing.
18-29-605.16.3 Threaded joints.
18-29-605.17 Steel.
18-29-605.17.1 Threaded joints.
18-29-605.17.2 Mechanical joints.
18-29-605.18 Deliberately omitted.
18-29-605.19 Deliberately omitted.
18-29-605.20 Deliberately omitted.
18-29-605.21 Joints between different materials.
18-29-605.21.1 Copper or copper-alloy tubing to galvanized steel pipe.
18-29-605.22 Protection for pipes and fixtures.
18-29-605.23 Hydrants and non-freeze hydrants protection.
18-29-605.24 Water supply pipe protection.
18-29-605.25 Refrigerant condensers.
18-29-605.26 Dead-ends prohibited.
18-29-605.27 Air conditioning and refrigeration systems.
18-29-605.28 Permissible exceptions.
18-29-606 Installation of the Building Water Distribution System.
18-29-606.1 Location of full-open valves.
18-29-606.2 Location of shutoff valves.
18-29-606.3 Access to valves.
18-29-606.4 Valve identification.
18-29-606.5 Water pressure booster systems.
18-29-606.5.1 Hydropneumatic system, booster pump system, gravity tank.
18-29-606.5.1.1 Requirements.
18-29-606.5.1.1.1 Pressure relief valve.
18-29-606.5.1.1.2 Compression tank.
18-29-606.5.1.1.3 Sludge drain pipe.
18-29-606.5.1.2 Booster pump system.
18-29-606.5.1.2.1 Gravity tanks.
18-29-606.5.1.2.2 Total pressure.
18-29-606.5.1.2.3 Low pressure cutoff.
18-29-606.5.2 Surge tank for pumps.
18-29-606.5.3 Check valves required.
18-29-606.5.3.1 Approval required.
18-29-606.5.4 Equipment required for tanks receiving city water.
18-29-606.5.4.1 Sludge drain pipe.
18-29-606.5.4.2 Size.
18-29-606.5.4.3 Covers and support.
18-29-606.5.5 Recycling system for vehicle wash installations.
18-29-606.5.6 Potable water inlet control and location.
18-29-606.5.7 Tank drain pipes.
18-29-606.5.8 Prohibited location of potable supply tanks.
18-29-606.5.9 Pressure relief valve requirements.
18-29-606.5.10 Pressure relief valves for hydropneumatic tanks.
18-29-606.6 Test of distribution pipes.
18-29-607 Hot Water Supply System.
18-29-607.1 Where required.
18-29-607.1.1 Water temperature.
18-29-607.1.2 Shower compartments and shower- bath combinations.
18-29-607.1.2.1 Mixed water temperature.
18-29-607.2 Heated plumbing circulating system.
18-29-607.2.1 Return piping.
18-29-607.2.1A Piping insulation.
18-29-607.2.2 Pump operation.
18-29-607.3 Thermal expansion control.
18-29-607.3.1 Pressure reducing valve.
18-29-607.3.2 Backflow prevention device or check valve.
18-29-607.4 Hot water supply to fixtures.
18-29-607.5 Expansion joints.
18-29-607.6 Prohibited connections.
18-29-608 Protection of Potable Water Supply.
18-29-608.1 General.
18-29-608.2 Plumbing fixtures.
18-29-608.3 Water supply pipes.
18-29-608.3.1 Special equipment, water supply protection.
18-29-608.4 Deliberately omitted.
18-29-608.5 Secondary water.
18-29-608.6 Prohibited use of secondary water.
18-29-608.6.1 Private water supplies.
18-29-608.7 Stop-and-waste valves prohibited.
18-29-608.8 Identification of potable and nonpotable water.
18-29-608.9 Re-utilization prohibited.
18-29-608.10 Reuse of piping.
18-29-608.11 Painting of water tanks.
18-29-608.12 Pumps and other appliances.
18-29-608.13 Backflow protection.
18-29-608.13.1 Air gap.
18-29-608.13.2 Reduced pressure principle backflow preventers.
18-29-608.13.3 Backflow preventer with intermediate atmospheric vent.
18-29-608.13.4 Barometric loop.
18-29-608.13.5 Atmospheric-type vacuum breakers.
18-29-608.13.6 Double check-valve assemblies.
18-29-608.14 Location of backflow preventers.
18-29-608.15 Protection of potable water outlets.
18-29-608.16 Connections to the potable water system.
18-29-608.16.1 Beverage carbonator.
18-29-608.16.1.1 Backflow preventer.
18-29-608.16.2 High-pressure steam boilers.
18-29-608.16.3 Connections to automatic fire sprinkler systems and standpipe systems.
18-29-608.16.4 Fire protection equipment, risers, standpipes, tanks to be drained and flushed.
18-29-608.16.5 Fire-extinguishing equipment cross-connection.
18-29-608.16.5.1 Prohibitions.
18-29-608.16.6 Chemical or petroleum pressure vessels.
18-29-608.16.6.1 Chemical or petroleum pressure vessels.
18-29-608.16.6.2 Water flushing or cooling.
18-29-608.16.6.3 Chemical, contaminated water, or sewage lines or vessels.
18-29-608.16.7 Deliberately omitted.
18-29-608.16.8 Portable cleaning equipment.
18-29-608.16.9 Dental pump equipment.
18-29-608.17 Private water supplies.
18-29-608.17.1 Well locations.
18-29-608.17.1.1 Distances.
18-29-608.17.1.2 Direct connections.
18-29-609 Health Care Plumbing.
18-29-609.1 General.
18-29-609.1.1 Where required.
18-29-609.2 Water service.
18-29-609.3 Hot water.
18-29-609.4 Vacuum breaker installation.
18-29-609.5 Prohibited water closet and clinical sink supply.
18-29-609.6 Clinical, hydrotherapeutic and radiological equipment.
18-29-609.7 Condensate drain trap seal.
18-29-609.8 Valve leakage diverter.
18-29-610 Disinfection of Potable Water System.
18-29-610.1 Scope.
18-29-611 Water Treatment Units.
18-29-611.1 Design.
18-29-611.2 Reverse osmosis systems.
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.)
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

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18-29-605.24  Water supply pipe protection.
   All water supply pipes or distributing pipes that are installed in the ground in any public way or other public place or in buildings, structures, or privately owned premises shall be covered to a minimum depth of not less than 5 feet (1525 mm) below the surface of the ground. No ashes, cinders, or refuse shall be used in back-filling any trenches or excavations in which water pipes are installed. All such pipes shall be coated with coal tar paint and insulated where they pass through concrete floors, or new concrete or masonry walls.
18-29-605.25  Refrigerant condensers.
   No refrigerant condenser of the water jacket type with a common wall between the refrigerant gas and the cooling water shall be directly connected to the city water supply. Cooling water, if from the city water supply, shall be obtained by gravity through an indirect connection. If water under pressure is required, it may be supplied only by means of a reduced pressure backflow preventer.
18-29-605.26  Dead-ends prohibited.
   Unused sections of water supply piping systems (or so called dead-ends) where city water will become stagnant are prohibited other than fire protection systems protected and installed in accordance with Table 18-29-608.1.
18-29-605.27  Air conditioning and refrigeration systems.
   All new or newly remodeled refrigeration systems employing water from the city mains for condensing purposes in the process of providing space air conditioning for commercial, industrial or residential use shall be closed air conditioning systems employing recirculation of cooling water to conserve water.
18-29-605.28  Permissible exceptions.
   Any and all exceptions to this provision will be permitted only by action of the commissioner of water management.
(Amend Coun. J. 11-8-12, p. 38872, § 351)
18-29-606  Installation of the Building Water Distribution System.
18-29-606.1  Location of full-open valves.
   Full-open valves shall be installed in the following locations:
   1.   On the building water service pipe from the public water supply near the curb;
   2.   On the water distribution supply pipe at the entrance into the structure;
   3.   On the discharge side of every water meter;
   4.   On the base of every water riser pipe in occupancies other than multiple family residential occupancies that are two stories or less in height and in one- and two-family residential occupancies etc.;
   5.   On the top of every water down-feed pipe in occupancies other than one- and two-family residential occupancies;
   6.   On the entrance to every water supply pipe to a dwelling unit, except where supplying a single fixture equipped with individual stops;
   7.   On the water supply pipe to a gravity or pressurized water tank;
   8.   On the water supply pipe to every water heater.
18-29-606.2  Location of shutoff valves.
   Shutoff valves shall be installed in the following locations:
   1.   On the fixture supply to each plumbing fixture except one- and two-family or multiple family residential occupancies, or individual guestrooms that are provided with unit shutoff valves in hotels, motels, boarding houses and similar occupancies;
   2.   On the water supply pipe to each sillcock;
   3.   On the water supply pipe to each appliance or mechanical equipment; and
   4.   On water services 1 1/2 inches (40 mm) or larger requiring meters either in the building or in a meter vault, valves shall be installed on the inlet and outlet sides of the meter and as near as practicable thereto. Meters on 1-inch (25 mm) services have a valve on the inlet side only. Valves located in the meter vault shall not eliminate the need for the valve in the building. All such valves shall be accessible for operation at all times.
18-29-606.3  Access to valves.
   Access shall be provided to all required full-open valves and shutoff valves.
18-29-606.4  Valve identification.
   Service and hose bibb valves shall be identified. All other valves installed in locations that are not adjacent to the fixture or appliance shall be identified, indicating the fixture or appliance served.
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