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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.)
Article 7. Sanitary Drainage (18-29-701 et seq.)
18-29-701 General.
18-29-701.1 Scope.
18-29-701.2 Sewer required.
18-29-701.3 Separate building sewer connection.
18-29-701.4 Sewage treatment.
18-29-701.5 Damage to drainage system or public sewer.
18-29-701.6 Tests.
18-29-701.7 Connections.
18-29-701.8 Notification of wrecking buildings and sealing or abandoning sewer facilities.
18-29-702 Materials.
18-29-702.1 Above-ground sanitary drainage and vent pipe.
18-29-702.2 Underground building drainage and vent pipe.
18-29-702.3 Building sewer pipe.
18-29-702.4 Fittings.
18-29-702.5 Chemical waste system.
18-29-702.5.1 Glass pipe.
18-29-702.5.1.1 Padding.
18-29-702.5.1.2 Thickness.
18-29-702.5.1.3 Buried pipe.
18-29-702.6 Safe pan material and construction.
18-29-702.6.1 Material.
18-29-702.6.2 Construction.
18-29-703 Building Sewer.
18-29-703.1 Building sewers, building drains or drainage systems installed near the water pipes and water supply system.
18-29-703.2 Drainage pipe in filled ground.
18-29-703.3 Sanitary and storm sewers.
18-29-703.3.1 Combined sewers.
18-29-703.4 Existing building sewers and drains.
18-29-703.4.1 Inspection of existing underground building sewers for drain and reuse.
18-29-704 Drainage Piping and Installation.
18-29-704.1 Slope of horizontal drainage piping.
18-29-704.2 Change in size.
18-29-704.3 Connections to offsets and bases of stacks.
18-29-704.4 Future fixtures.
18-29-704.5 Dead ends.
18-29-704.5.1 Freezing.
18-29-704.5.2 Deliberately omitted.
18-29-705 Joints.
18-29-705.1 General.
18-29-705.2 Deliberately omitted.
18-29-705.3 Deliberately omitted.
18-29-705.4 Brass.
18-29-705.4.1 Brazed joints.
18-29-705.4.2 Mechanical joints.
18-29-705.4.3 Threaded joints.
18-29-705.4.4 Welded joints.
18-29-705.5 Cast iron.
18-29-705.5.1 Caulked joints.
18-29-705.5.2 Compression gasket joints.
18-29-705.5.3 Mechanical joint coupling.
18-29-705.6 Concrete joints.
18-29-705.7 Copper pipe.
18-29-705.7.1 Brazed joints.
18-29-705.7.2 Mechanical joints.
18-29-705.7.3 Soldered joints.
18-29-705.7.4 Threaded joints.
18-29-705.7.5 Welded joints.
18-29-705.8 Copper tubing.
18-29-705.8.1 Brazed joints.
18-29-705.8.2 Mechanical joints.
18-29-705.8.3 Soldered joints.
18-29-705.9 Borosilicate glass joints.
18-29-705.9.1 Caulked joints.
18-29-705.10 Steel.
18-29-705.10.1 Threaded joints.
18-29-705.10.2 Mechanical joints.
18-29-705.11 Deliberately omitted.
18-29-705.12 PVC plastic.
18-29-705.12.1 Mechanical joints.
18-29-705.12.2 Solvent cementing.
18-29-705.12.3 Threaded joints.
18-29-705.13 Vitrified clay.
18-29-705.14 Joints between different materials.
18-29-705.14.1 Copper or copper-alloy tubing to cast-iron hub pipe.
18-29-705.14.2 Copper or copper-alloy tubing to galvanized steel pipe.
18-29-705.14.3 Cast-iron pipe to galvanized steel or brass pipe.
18-29-705.14.4 Plastic pipe or tubing to other piping material.
18-29-705.14.5 Deliberately omitted.
18-29-705.14.6 Borosilicate glass to other materials.
18-29-705.15 Drainage slip joints.
18-29-705.16 Caulking ferrules.
18-29-705.17 Deliberately omitted.
18-29-706 Connections Between Drainage Piping And Fixtures.
18-29-706.1 Connections and changes in direction.
18-29-706.2 Obstructions.
18-29-706.3 Installation of fittings.
18-29-707 Prohibited Joints and Connections.
18-29-707.1 Prohibited joints.
18-29-708 Cleanouts.
18-29-708.1 Scope.
18-29-708.2 Cleanout plugs.
18-29-708.3 Where required.
18-29-708.3.1 Horizontal drains within buildings.
18-29-708.3.2 Building sewers.
18-29-708.3.3 Changes of direction.
18-29-708.3.4 Base of stack.
18-29-708.3.5 Building drain and building sewer junction.
18-29-708.3.6 Manholes.
18-29-708.4 Concealed piping.
18-29-708.5 Opening direction.
18-29-708.6 Prohibited installation.
18-29-708.7 Minimum size.
18-29-708.8 Pipes 8 inches and larger.
18-29-708.9 Clearances.
18-29-708.10 Access.
18-29-709 Fixture Units.
18-29-709.1 Values for fixtures.
18-29-709.2 Fixtures not listed in Table 18-29-709.1.
18-29-709.3 Values for continuous flow.
18-29-709.4 Deliberately omitted.
18-29-709.5 Values for indirect waste receptor.
18-29-710 Drainage System Sizing.
18-29-710.1 Maximum fixture unit load.
18-29-710.1.1 Maximum fixture units.
18-29-710.1.2 Minimum size.
18-29-710.1.3 Horizontal stack offsets.
18-29-710.1.4 Vertical stack offsets.
18-29-710.2 Future fixtures.
18-29-710.3 Underground drainage piping.
18-29-711 Offsets in Drainage Piping in Buildings of Five Stories or More.
18-29-711.1 Horizontal branch connections above or below vertical stack offsets.
18-29-711.1.1 Omission of vents for vertical stack offsets.
18-29-711.2 Horizontal branch connections to horizontal stack offsets.
18-29-711.3 Horizontal stack offsets.
18-29-711.3.1 Omission of vents for horizontal stack offsets.
18-29-711.3.2 Suds pressure zones.
18-29-711.3.2.1 Height.
18-29-711.3.2.2 Upstream.
18-29-711.3.2.3 Downstream.
18-29-711.4 Offsets below lowest branch.
18-29-712 Sumps and Ejectors.
18-29-712.1 Building drains below sewer.
18-29-712.2 Check and gate valve required.
18-29-712.3 Sump design.
18-29-712.3.1 Sump pump.
18-29-712.3.2 Sump pit.
18-29-712.3.3 Discharge piping.
18-29-712.3.4 Maximum effluent level.
18-29-712.3.5 Ejector connection to the drainage system.
18-29-712.4 Sewage pumps and sewage ejectors.
18-29-712.4.1 Capacity.
18-29-712.4.2 Duplex equipment required.
18-29-713 Health Care Plumbing.
18-29-713.1 Scope.
18-29-713.2 Bedpan washers and clinical sinks.
18-29-713.3 Indirect waste.
18-29-713.4 Vacuum system station.
18-29-713.5 Bottle system.
18-29-713.6 Central disposal system equipment.
18-29-713.7 Central vacuum or disposal systems.
18-29-713.7.1 Piping.
18-29-713.7.2 Velocity.
18-29-713.8 Vent connections prohibited.
18-29-713.9 Local vents and stacks for bedpan washers.
18-29-713.9.1 Multiple installations.
18-29-713.9.2 Trap required.
18-29-713.9.3 Trap seal maintenance.
18-29-713.10 Sterilizer vents and stacks.
18-29-713.10.1 Drainage.
18-29-713.11 Sterilizer vent stack sizes.
18-29-713.11.1 Bedpan steamers.
18-29-713.11.2 Boiling-type sterilizers.
18-29-713.11.3 Pressure sterilizers.
18-29-713.11.4 Pressure instrument washer sterilizer sizes.
18-29-714 Deliberately omitted.
18-29-715 Backwater Valves.
18-29-715.1 Sewage backflow.
18-29-715.2 Fixture branches.
18-29-715.3 Material.
18-29-715.4 Seal.
18-29-715.5 Diameter.
18-29-715.6 Location.
18-29-716 Flood Control.
18-29-716.1 Flood control devices.
18-29-716.2 Flood control systems.
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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18-29-713.11.3  Pressure sterilizers.
   Pressure sterilizer vent stacks shall be 2 1/2 inches (64 mm) minimum. Those serving combinations of pressure sterilizer exhaust connections shall be sized in accordance with Table 18-29-713.11.3.
Table 18-29-713.11.3
Stacks Sizes for Pressure Sterilizers (Number of Connections of Various
Sizes Permitted to Various- Sized Vent Stacks)
Stack Size (inches)
Connection Size
3/4"
1"
1 1/4"
1 1/2"
Stack Size (inches)
Connection Size
3/4"
1"
1 1/4"
1 1/2"
1 1/2 a
3 or
2 or
1
1 1/2 b
2 and
1
2 a
6 or
3 or
2 or
1
2 b
3 and
2
2 b
2 and
1 and
1
2 b
1 and
1 and
1
3 a
15 or
7 or
5 or
3
3 b
1 and
1 and
5 and
2 and
2
1
 
For SI: 1 inch = 25.4 mm
a Total of each size.
b Combination of sizes.
18-29-713.11.4  Pressure instrument washer sterilizer sizes.
   The minimum diameter of a sterilizer vent stack serving an instrument washer sterilizer shall be 2 inches (50 mm). Not more than two sterilizers shall be installed on a 2-inch (50 mm) stack, and not more than four sterilizers shall be installed on a 3-inch (75 mm) stack.
18-29-714  Deliberately omitted.
18-29-715  Backwater Valves.
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