CHAPTER 18-29
PLUMBING*
* Editor's note – Chapter 18-29, Water Service Charges and Plumbing Requirements, was added by Coun. J. 3-28-01, p. 55444, § 1. Coun. J. 11-21-17, p. 61913, § 8 amended the title of Chapter 18-29.
Article 1.  Administration
18-29-101   General.
18-29-101.1   Deliberately omitted.
18-29-101.2   Scope.
18-29-101.2.1   Department of Water Management requirements.
18-29-101.2.2   Department of Water requirements.
18-29-101.3   Intent
18-29-101.4   Deliberately omitted.
18-29-102   Applicability.
18-29-102.1   General.
18-29-102.2   Existing installations.
18-29-102.3   Maintenance.
18-29-102.4   Additions, alterations or repairs.
18-29-102.5   Change in occupancy.
18-29-102.6   Deliberately omitted.
18-29-102.7   Moved buildings.
18-29-102.8   Referenced codes and standards.
18-29-102.9   Requirements not covered by chapter.
18-29-103   Deliberately omitted.
18-29-104   Deliberately omitted.
18-29-105   Approval.
18-29-105.1   Modifications.
18-29-105.2   Alternative materials, methods and equipment.
18-29-105.3   Required testing.
18-29-105.3.1   Test methods.
18-29-105.3.2   Testing agency.
18-29-105.3.3   Test reports.
18-29-105.4   Alternative engineered design.
18-29-105.4.1   Design criteria.
18-29-105.4.2   Submittal.
18-29-105.4.3   Technical data.
18-29-105.4.4   Construction documents.
18-29-105.4.5   Design approval.
18-29-105.4.6   Inspection and testing.
18-29-105.5   Material and equipment reuse.
18-29-106   Permits.
18-29-106.1   Permits.
18-29-106.2   License required.
18-29-107   Fines.
Article 2.  Definitions
18-29-201   General.
18-29-201.1   Scope.
18-29-201.2   Interchangeability.
18-29-201.3   Terms defined in other articles.
18-29-201.4   Terms not defined.
18-29-202   General definitions.
Article 3.  General Regulations
18-29-301   General.
18-29-301.1   Scope.
18-29-301.1.1   New occupancy.
18-29-301.1.2   Age of building.
18-29-301.2   System installation.
18-29-301.3   Connections to drainage system.
18-29-301.4   Connections to water supply.
18-29-301.5   Pipe, tube and fitting sizes.
18-29-301.6   Prohibited locations.
18-29-302   Exclusion of Materials Detrimental to the Sewer System.
18-29-302.1   Detrimental or dangerous materials.
18-29-302.2   Industrial wastes.
18-29-303   Materials.
18-29-303.1   Identification.
18-29-303.2   Installation of materials.
18-29-303.3   Plastic pipe, fittings and components.
18-29-303.4   Labeling.
18-29-303.4.1   Testing.
18-29-303.4.2   Inspection and identification.
18-29-303.4.2.1   Independent.
18-29-303.4.2.2   Equipment.
18-29-303.4.2.3   Personnel.
18-29-304   Rodent-Proofing.
18-29-304.1   General.
18-29-304.2   Strainer plates.
18-29-304.3   Meter boxes.
18-29-304.4   Openings for pipes.
18-29-305   Protection of Pipes and Plumbing System Components.
18-29-305.1   Corrosion.
18-29-305.2   Breakage.
18-29-305.3   Stress and strain.
18-29-305.4   Sleeves.
18-29-305.5   Pipes through or under footings or foundation walls.
18-29-305.6   Freezing.
18-29-305.6.1   Sewer depth.
18-29-305.6.2   Water main depth.
18-29-305.7   Waterproofing of openings.
18-29-305.8   Protection against physical damage.
18-29-305.9   Protection of components of plumbing system.
18-29-306   Trenching, Excavation and Backfill.
18-29-306.1   Support of piping.
18-29-306.2   Trenching and bedding.
18-29-306.2.1   Overexcavation.
18-29-306.2.2   Rock removal.
18-29-306.2.3   Soft loadbearing materials.
18-29-306.3   Backfilling.
18-29-306.4   Tunneling.
18-29-306.5   Violations – Penalties.
18-29-307   Structural Safety.
18-29-307.1   General.
18-29-307.2   Cutting, notching or boring of holes.
18-29-307.3   Penetrations of floor-ceiling assemblies and fire-resistance-rated assemblies.
18-29-307.4   Trench location.
18-29-308   Piping Support.
18-29-308.1   General.
18-29-308.2   Deliberately omitted.
18-29-308.3   Materials.
18-29-308.4   Structural attachment.
18-29-308.5   Interval of support.
18-29-308.6   Sway bracing.
18-29-308.7   Anchorage.
18-29-308.7.1   Location.
18-29-308.8   Expansion joint fittings.
18-29-308.8.1   Vertical expansion.
18-29-308.9   Stacks.
18-29-308.10   Parallel water distribution systems.
18-29-309   Floodproofing.
18-29-309.1   General.
18-29-309.1.1   Base flood elevation.
18-29-309.2   Deliberately omitted.
18-29-310   Washroom and Toilet Room Requirements.
18-29-310.1   Ventilation.
18-29-310.2   Location of fixtures and piping.
18-29-310.3   Deliberately omitted.
18-29-310.4   Water closet compartment.
18-29-311   Toilet Facilities for Workers.
18-29-311.1   General; Workmen's temporary closets.
18-29-312   Tests and Inspections.
18-29-312.1   Required tests.
18-29-312.2   Drainage and vent water test.
18-29-312.3   Deliberately omitted.
18-29-312.4   Deliberately omitted.
18-29-312.5   Water supply system test.
18-29-312.6   Gravity sewer test.
18-29-312.7   Forced sewer test.
18-29-312.8   Storm drainage system test.
18-29-312.9   Cross connection control device inspections.
Article 4.  Fixtures, Faucets and Fixture Fittings
18-29-401   General.
18-29-401.1   Scope.
18-29-401.2   Prohibited fixtures and connections.
18-29-401.3   Water conservation.
18-29-401.4   Separate toilet room.
18-29-401.5   WaterSense labeled fixtures and irrigation controllers.
18-29-402   Fixture Materials.
18-29-402.1   Quality of fixtures.
18-29-402.1.1   Used fixtures.
18-29-402.2   Materials for specialty fixtures.
18-29-402.3   Sheet copper.
18-29-402.4   Sheet lead.
18-29-402.5   Fixture strainer.
18-29-402.6   Fixture overflow.
18-29-403   Minimum Plumbing Facilities.
18-29-403.1   Minimum number of fixtures.
18-29-403.2   Separate facilities.
18-29-403.3   Number of occupants for both genders.
18-29-403.4   Location of employee toilet facilities in occupancies other than assembly or mercantile.
18-29-403.5   Toilet facilities in mercantile and assembly occupancies.
18-29-403.6   Customer facilities.
18-29-403.6.1   Pay facilities.
18-29-403.6.1.1   Included buildings.
18-29-403.7   Drinking fountains.
18-29-403.8   Multiple dwellings.
18-29-403.9   Kitchens.
18-29-404   Accessible Plumbing Facilities.
18-29-404.1   Where required.
18-29-405   Installation of Fixtures.
18-29-405.1   Water supply protection.
18-29-405.2   Access for cleaning.
18-29-405.2.1   Toilet room construction.
18-29-405.2.2   Day care centers.
18-29-405.3   Setting.
18-29-405.3.1   Water closets, lavatories and bidets.
18-29-405.3.2   Urinals.
18-29-405.4   Floor and wall drainage connections.
18-29-405.4.1   Floor flanges.
18-29-405.4.1.1   Hard lead floor flanges.
18-29-405.4.2   Securing floor outlet fixtures.
18-29-405.4.3   Securing wall-hung water closet bowls.
18-29-405.5   Water-tight joints.
18-29-405.6   Plumbing in mental health centers.
18-29-405.7   Design of overflows.
18-29-405.7.1   Connection of overflows.
18-29-405.8   Access to concealed connections.
18-29-406   Automatic Clothes Washers.
18-29-406.1   Approval.
18-29-406.2   Water connection.
18-29-406.3   Waste connection.
18-29-407   Bathtubs.
18-29-407.1   Approval.
18-29-407.2   Bathtub waste outlets.
18-29-407.3   Glazing.
18-29-408   Bidets.
18-29-408.1   Approval.
18-29-408.2   Water connection.
18-29-409   Dishwashing Machines.
18-29-409.1   Approval.
18-29-409.2   Water connection.
18-29-409.2.1   Water supply connection.
18-29-409.2.2   Hot water.
18-29-409.3   Waste connection.
18-29-409.3.1   Commercial dishwashers.
18-29-410   Drinking Fountains.
18-29-410.1   Approval.
18-29-410.2   Prohibited location.
18-29-411   Emergency Showers and Eyewash Stations.
18-29-411.1   Water connection.
18-29-411.2   Waste connection.
18-29-412   Floor Drains.
18-29-412.1   Approval.
18-29-412.2   Floor drain trap and strainer.
18-29-412.3   Size of floor drains.
18-29-412.4   Required location and construction.
18-29-412.4.1   Underground floor drains.
18-29-412.4.2   Sanitary waste drain.
18-29-412.4.3   Masonry or concrete floor.
18-29-412.4.4   Hospitals and nursing homes.
18-29-412.4.5   Public laundries and multiple- family dwellings.
18-29-412.4.6   Size.
18-29-412.4.7   Accessibility.
18-29-412.4.8   Provision for evaporation.
18-29-412.4.9   Floor drains in food establishments.
18-29-413   Food Waste Grinder Units.
18-29-413.1   Approval.
18-29-413.2   Domestic food waste grinder waste outlets.
18-29-413.3   Commercial food waste grinder waste outlets.
18-29-413.4   Water supply required.
18-29-414   Garbage Can Washers.
18-29-414.1   Water connection.
18-29-414.2   Waste connection.
18-29-415   Laundry Trays.
18-29-415.1   Approval.
18-29-415.2   Waste outlet.
18-29-416   Lavatories.
18-29-416.1   Approval.
18-29-416.2   Cultured marble lavatories.
18-29-416.3   Lavatory waste outlets.
18-29-417   Showers.
18-29-417.1   Approval.
18-29-417.2   Water supply riser.
18-29-417.3   Shower waste outlet.
18-29-417.4   Shower compartments.
18-29-417.4.1   Deliberately omitted.
18-29-417.4.2   Wall area.
18-29-417.4.3   Shower installation.
18-29-417.4.4   Water temperature safety.
18-29-417.4.5   Dimensions.
18-29-417.4.6   Materials.
18-29-417.4.7   Public or institution showers.
18-29-417.5   Shower floor or receptors.
18-29-417.5.1   Support.
18-29-417.5.2   Deliberately omitted.
18-29-417.6   Glazing.
18-29-418   Sinks.
18-29-418.1   Approval.
18-29-418.2   Sink waste outlets.
18-29-418.2.1   Facilities with no range oven.
18-29-419   Urinals.
18-29-419.1   Approval.
18-29-419.2   Substitution for water closets.
18-29-419.3   Urinals for public or employee toilet facilities.
18-29-419.4   Surrounding material.
18-29-420   Water Closets.
18-29-420.1   Approval.
18-29-420.2   Water closets for public or employee toilet facilities.
18-29-420.3   Water closet seats.
18-29-420.4   Water closet connections.
18-29-420.5   Deliberately omitted.
18-29-420.6   Chemical closets.
18-29-420.7   Temporary toilet facilities.
18-29-421   Whirlpool Bathtubs.
18-29-421.1   Approval.
18-29-421.2   Installation.
18-29-421.3   Drain.
18-29-421.4   Suction fittings.
18-29-422   Health Care Fixtures and Equipment.
18-29-422.1   Scope.
18-29-422.2   Deliberately omitted.
18-29-422.3   Deliberately omitted.
18-29-422.4   Deliberately omitted.
18-29-422.5   Deliberately omitted.
18-29-422.6   Deliberately omitted.
18-29-422.7   Deliberately omitted.
18-29-422.8   Deliberately omitted.
18-29-422.9   Sterilizer equipment requirements.
18-29-422.9.1   Sterilizer piping.
18-29-422.9.2   Steam supply.
18-29-422.9.3   Steam condensate return.
18-29-422.9.4   Condensers.
18-29-422.10   Special elevations.
18-29-423   Specialty Plumbing Fixtures.
18-29-423.1   Water connections.
18-29-423.2   Approval.
18-29-424   Faucets and Other Fixture Fittings.
18-29-424.1   Approval.
18-29-424.2   Hose spray.
18-29-424.3   Hand showers.
18-29-424.4   Shower valves.
18-29-425   Flushing Devices for Water Closets and Urinals.
18-29-425.1   Flushing devices required.
18-29-425.1.1   Separate for each fixture.
18-29-425.2   Flushometer valves and tanks.
18-29-425.3   Flush tanks.
18-29-425.3.1   Ball cocks.
18-29-425.3.2   Overflows in flush tanks.
18-29-425.3.3   Sheet copper.
18-29-425.3.4   Access required.
18-29-425.4   Flush pipes and fittings.
Article 5.  Water Heaters
18-29-501   General.
18-29-501.1   Scope.
18-29-501.2   Deliberately omitted.
18-29-501.3   Drain valves.
18-29-501.4   Location for access.
18-29-501.5   Water heater labeling.
18-29-501.6   Tankless water heaters.
18-29-501.6.1   Coils.
18-29-501.7   Pressure marking of storage tanks.
18-29-501.8   Temperature controls.
18-29-501.8.1   Instantaneous water heaters.
18-29-501.9   Heat exchangers.
18-29-502   Installation.
18-29-502.1   General.
18-29-502.2   Water heaters installed in non- private garages.
18-29-502.3   Rooms used as a plenum.
18-29-502.4   Prohibited location.
18-29-502.5   Water heaters installed in closets accessed through sleeping rooms or bathrooms.
18-29-502.6   Water heaters installed in attics, basements or other areas.
18-29-503   Connections.
18-29-503.1   Cold water line valve.
18-29-503.1.1   Shutoff valves.
18-29-503.2   Deliberately omitted.
18-29-504   Safety Devices.
18-29-504.1   Antisiphon devices.
18-29-504.2   Vacuum relief valve.
18-29-504.3   Energy cutoff device.
18-29-504.4   Shutdown.
18-29-504.5   Relief valve.
18-29-504.5.1   Installation.
18-29-504.6   Relief valve approval.
18-29-504.7   Relief outlet waste.
18-29-504.7.1   Discharge.
18-29-504.7.2   Location.
18-29-504.7.3   Materials.
18-29-504.8   Required pan.
18-29-504.8.1   Pan size and drain.
18-29-504.8.2   Pan drain termination.
18-29-505   Insulation.
18-29-505.1   Unfired vessel insulation.
Article 6.  Water Supply and Distribution
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 of nonmetered 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   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   General.
18-29-801.1   Scope.
18-29-801.2   Protection.
18-29-802   Indirect Wastes.
18-29-802.1   Where required.
18-29-802.1.1   Deliberately omitted.
18-29-802.1.2   Deliberately omitted.
18-29-802.1.3   Potable clear-water waste.
18-29-802.1.4   Nonpotable clear-water waste.
18-29-802.1.5   Waste piping.
18-29-802.1.6   Dishwashing machine.
18-29-802.1.7   Sinks.
18-29-802.2   Deliberately omitted.
18-29-802.3   Waste receptors.
18-29-802.3.1   Open hub waste receptors.
18-29-802.4   Standpipes.
18-29-803   Special Wastes.
18-29-803.1   Deliberately omitted.
18-29-803.2   Neutralizing device required for corrosive wastes.
18-29-803.3   System design.
18-29-803.4   Volatile wastes.
18-29-804   Materials, Joints and Connections.
18-29-804.1   General.
18-29-804.2   Acid waste piping material.
18-29-805   Waste Water Control.
18-29-805.1   Preliminary treatment.
18-29-805.1.1   Approval.
18-29-805.2   Prohibited wastes.
18-29-805.2.1   Maximum concentration.
18-29-805.2.2   Types of discharge.
18-29-805.3   Discharges of clean waters.
18-29-805.4   Manholes.
18-29-805.4.1   Use and permit.
18-29-805.5   Gauging and sampling.
18-29-805.5.1   Legal or financial obligation.
18-29-805.6   Sampling methods.
18-29-805.7   Analyses.
18-29-805.7.1   Preliminary treatment.
18-29-805.7.2   Written approval.
Article 9.  Vents
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   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   General.
18-29-1001.1   Scope.
18-29-1002   Trap Requirements.
18-29-1002.1   Fixture traps.
18-29-1002.1.1   Open plumbing.
18-29-1002.1.2   Traps underground.
18-29-1002.1.3   Animal facilities and barn drainage.
18-29-1002.1.4   Basement floor drains.
18-29-1002.1.5   Backwater valves.
18-29-1002.2   Design of traps.
18-29-1002.3   Prohibited traps.
18-29-1002.4   Trap seals.
18-29-1002.5   Size of fixture traps.
18-29-1002.6   Deliberately omitted.
18-29-1002.7   Trap setting and protection.
18-29-1002.8   Recess for trap connection.
18-29-1002.9   Acid-resisting traps.
18-29-1002.10   Plumbing in mental health centers.
18-29-1003   Interceptors and Separators.
18-29-1003.1   Interceptors required.
18-29-1003.1.1   Interceptors not required.
18-29-1003.2   Size, type and location to be approved.
18-29-1003.3   Grease interceptor or catch basin.
18-29-1003.3.1   Where required.
18-29-1003.3.2   Grease, fats and oils.
18-29-1003.3.3   Grease interceptors and discharge.
18-29-1003.3.4   Construction materials.
18-29-1003.3.5   Types.
18-29-1003.3.6   Grease trap capacity.
18-29-1003.3.7   Rate of flow controls.
18-29-1003.3.8   Efficiency of interceptors.
18-29-1003.4   Grease catch basins outside.
18-29-1003.4.1   Basin cover.
18-29-1003.5   Deliberately omitted.
18-29-1003.6   Volatile waste separator.
18-29-1003.6.1   Garages.
18-29-1003.7   Separation of liquids.
18-29-1003.7.1   General design requirements.
18-29-1003.7.2   Garage and service stations.
18-29-1003.8   Sand interceptors in commercial establishments.
18-29-1003.9   Laundries.
18-29-1003.10   Bottling establishments.
18-29-1003.11   Slaughterhouses.
18-29-1003.12   Venting of interceptors and separators.
18-29-1003.13   Access and maintenance of interceptors and separators.
18-29-1004   Materials, Joints and Connections.
18-29-1004.1   General.
Article 11.  Storm Drainage
18-29-1101   General.
18-29-1101.1   Scope.
18-29-1101.2   Where required.
18-29-1101.2.1   Roof drainage and downspouts.
18-29-1101.2.2   Drainage of areas and yards.
18-29-1101.2.3   Storm runoff.
18-29-1101.3   Prohibited drainage.
18-29-1101.4   Tests.
18-29-1101.5   Continuous flow.
18-29-1101.6   Fittings and connections.
18-29-1101.7   Roof design.
18-29-1101.8   Cleanouts required.
18-29-1101.9   Backwater valves.
18-29-1102   Materials.
18-29-1102.1   General.
18-29-1102.2   Inside storm drainage conductors.
18-29-1102.3   Underground building storm drain pipe.
18-29-1102.4   Building storm sewer standards.
18-29-1102.5   Subsoil drain pipe.
18-29-1102.6   Roof drains.
18-29-1102.7   Fittings.
18-29-1103   Traps.
18-29-1103.1   Main trap.
18-29-1103.2   Material.
18-29-1103.3   Size.
18-29-1103.4   Cleanout.
18-29-1104   Conductors and Connections.
18-29-1104.1   Prohibited use.
18-29-1104.1.1   District sewer lines.
18-29-1104.2   Combining storm with sanitary drainage.
18-29-1104.2.1   Separate sewer systems.
18-29-1104.3   Floor drains.
18-29-1105   Roof Drains.
18-29-1105.1   Strainers.
18-29-1105.2   Flat decks.
18-29-1105.3   Roof drain flashing.
18-29-1105.4   Maximum area.
18-29-1106   Size of Conductors, Leaders and Storm Drains.
18-29-1106.1   General.
18-29-1106.2   Vertical conductors and leaders.
18-29-1106.3   Building storm drains and sewers.
18-29-1106.4   Vertical walls.
18-29-1106.5   Parapet wall scupper location.
18-29-1106.6   Size of roof gutters.
18-29-1107   Fines.
18-29-1108   Combined Sanitary and Storm System.
18-29-1108.1   Size of combined drains and sewers.
18-29-1109   Values for Continuous Flow.
18-29-1109.1   Equivalent roof area.
18-29-1110   Controlled Flow Roof Drain Systems.
18-29-1110.1   General.
18-29-1110.1.1   Design.
18-29-1110.2   Control devices.
18-29-1110.3   Installation.
18-29-1110.4   Minimum number of roof drains.
18-29-1111   Sumps.
18-29-1111.1   Subsoil drains.
18-29-1111.2   Building subdrains.
18-29-1111.3   Pumping system.
18-29-1111.3.1   Pump capacity and head.
18-29-1111.3.2   Construction.
18-29-1111.3.3   Electrical.
18-29-1111.3.4   Piping.
Article 12.  Swimming Pools
18-29-1200   General.
18-29-1200.1   Scope.
18-29-1200.2   Definition – nonprivate swimming pool.
18-29-1200.3   Definition – private swimming pool.
Part I
18-29-1201   Nonprivate Swimming Pools Generally.
18-29-1201.1   Scope.
18-29-1201.2   Prohibited locations.
18-29-1201.3   Permit requirements.
18-29-1202   Construction.
18-29-1202.1   Nonprivate swimming pools.
18-29-1202.2   Recirculation inlets.
18-29-1202.3   Outlets.
18-29-1202.4   Hose connections.
18-29-1202.5   Overflow gutters.
18-29-1202.6   Equipment for removal of sediment.
18-29-1202.7   Recirculation system.
18-29-1202.7.1   Turnover of pool contents.
18-29-1202.8   Equipment required.
18-29-1202.9   Strainer required.
18-29-1202.10   Disinfection equipment.
18-29-1202.11   Chemical equipment.
18-29-1202.11.1   Coagulant solutions.
18-29-1202.12   Filtration equipment.
18-29-1202.12.1   Filter area.
18-29-1202.12.2   Underdrain system size.
18-29-1202.12.3   Filter sand depth.
18-29-1202.12.4   Loss-of-head gauges.
18-29-1202.12.5   Proper design.
18-29-1202.12.6   Pressure sand filter system provisions.
18-29-1202.12.7   Filter media other than sand.
18-29-1202.12.8   Sight glass.
18-29-1202.12.9   Filter piping arrangement.
18-29-1202.13   Make-up water.
18-29-1202.14   Sewage or waste water.
18-29-1202.15   Cleanouts.
18-29-1202.16   Accessibility.
18-29-1202.17   Hydrogen-ion concentration.
18-29-1202.18   Disinfectant residuals.
18-29-1203   Additional Facilities Required.
18-29-1203.1   Equipment room location and drainage.
18-29-1203.2   Dressing room drainage.
18-29-1203.3   Shower facilities.
18-29-1203.4   Toilet facilities.
18-29-1203.4.1   Inside dry.
18-29-1203.4.2   Inside wet.
18-29-1203.4.3   Fixtures.
18-29-1203.4.3.1   Smaller pools.
18-29-1203.4.3.2   Larger pools.
18-29-1203.4.4   Deliberately omitted.
18-29-1203.4.5   Backsiphonage.
18-29-1203.4.6   Cleaning.
18-29-1203.4.7   Splashing.
18-29-1203.4.8   Floors.
18-29-1203.4.9   Hose bibs.
18-29-1203.4.10   Discharge.
18-29-1203.5   Subsurface drainage.
18-29-1203.6   Drinking fountains.
18-29-1203.7   Bathhouse facilities at apartment pools.
18-29-1203.7.1   Where required.
18-29-1203.7.2   Outdoor pools.
18-29-1203.7.3   Indoor pools.
Part II
18-29-1204   Private Swimming Pools.
18-29-1204.1   Location.
18-29-1204.1.1   District limitations.
18-29-1204.1.2   Distance from property line.
18-29-1204.2   Permit required.
18-29-1204.3   Drawings, plans and permits.
18-29-1204.3.1   Presentation, examination and approval.
18-29-1204.3.2   Scale and dimensions of plan.
18-29-1204.3.3   Restrictions prior to issuance of permit.
18-29-1204.3.4   Deviation from plans.
18-29-1204.4   Recirculation pools.
18-29-1204.5   Materials.