About this chapter: Chapter 3 covers general regulations for plumbing installations. As many of these requirements would need to be repeated in Chapters 3 through 14, placing such requirements in only one location eliminates code development coordination issues associated with the same requirement in multiple locations. These general requirements can be superseded by more specific requirements for certain applications in Chapters 3 through 14.
Plumbing fixtures, drains, appurtenances and appliances used to receive or discharge liquid waste or sewage shall be directly connected to the sanitary drainage system of the building or premises, in accordance with the requirements of this code. This section shall not be construed to prevent indirect waste systems required by Chapter 8.
Exception: Bathtubs, showers, lavatories, clothes washers and laundry trays shall not be required to discharge to the sanitary drainage system where such fixtures discharge to an approved system in accordance with Chapters 13 and 14.
In instances where conflicts occur between this code and the manufacturer's installation instructions, the more restrictive provisions shall apply.
Pipe shall be supported in accordance with Table 308.5.
|PIPING MATERIAL||MAXIMUM |
|Acrylonitrile butadiene styrene (ABS) pipe||4||10b|
|Chlorinated polyvinyl chloride (CPVC) pipe and tubing, 1 inch and smaller||3||10b|
|Chlorinated polyvinyl chloride (CPVC) pipe and tubing, 11/4 inches and larger||4||10b|
|Copper or copper-alloy pipe||12||10|
|Copper or copper-alloy tubing, 11/4-inch diameter and smaller||6||10|
|Copper or copper-alloy tubing, 11/2-inch diameter and larger||10||10|
|Cross-linked polyethylene (PEX) pipe 1 inch and smaller||2.67 (32 inches)||10b|
|Cross-linked polyethylene (PEX) pipe 11/4 inch and larger||4||10b|
|Cross-linked polyethylene/aluminum/cross-linked polyethylene (PEX-AL-PEX) pipe||2.67 (32 inches)||4|
|Polyethylene/aluminum/polyethylene (PE-AL-PE) pipe||2.67 (32 inches)||4|
|Polyethylene of raised temperature (PE-RT) pipe 1 inch and smaller||2.67 (32 inches)||10b|
|Polyethylene of raised temperature (PE-RT) pipe 11/4 inch and larger||4||10b|
|Polypropylene (PP) pipe or tubing 1 inch and smaller||2.67 (32 inches)||10b|
|Polypropylene (PP) pipe or tubing, 11/4 inches and larger||4||10b|
|Polyvinyl chloride (PVC) pipe||4||10b|
|Stainless steel drainage systems||10||10b|
For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm.
- The maximum horizontal spacing of cast-iron pipe hangers shall be increased to 10 feet where 10-foot lengths of pipe are installed.
- For sizes 2 inches and smaller, a guide shall be installed midway between required vertical supports. Such guides shall prevent pipe movement in a direction perpendicular to the axis of the pipe.
|Table 308.5.1 Hanger Rod Size|
|Pipe and Tube Size||Rod Size|
|1/2" — 4"||3/8"|
|5" — 8"||1/2"|
|10" — 12"||5/8"|
- Water service pipes.
- Pump seals in individual water supply systems where the pump is located below the design flood elevation.
- Covers on potable water wells shall be sealed, except where the top of the casing well or pipe sleeve is elevated to not less than 1 foot (305 mm) above the design flood elevation.
- Sanitary drainage piping.
- Storm drainage piping.
- Manhole covers shall be sealed, except where elevated to or above the design flood elevation.
- Other plumbing fixtures, faucets, fixture fittings, piping systems and equipment.
- Water heaters.
- Vents and vent systems.
Exception: The systems listed in this section are permitted to be located below the elevation required by Section 1612 of the International Building Code for utilities and attendant equipment, provided that the systems are designed and installed to prevent water from entering or accumulating within their components and the systems are constructed to resist hydrostatic and hydrodynamic loads and stresses, including the effects of buoyancy, during the occurrence of flooding up to such elevation.
Gauges used for testing shall be as follows:
- Tests requiring a pressure of 10 pounds per square inch (psi) (69 kPa) or less shall utilize a testing gauge having increments of 0.10 psi (0.69 kPa) or less.
- Tests requiring a pressure of greater than 10 psi (69 kPa) but less than or equal to 100 psi (689 kPa) shall utilize a testing gauge having increments of 1 psi (6.9 kPa) or less.
- Tests requiring a pressure of greater than 100 psi (689 kPa) shall utilize a testing gauge having increments of 2 psi (14 kPa) or less.
Reduced pressure principle, double check, pressure vacuum breaker, reduced pressure detector fire protection, double check detector fire protection, and spill-resistant vacuum breaker backflow preventer assemblies and hose connection backflow preventers shall be tested at the time of installation, immediately after repairs or relocation and at least annually by a certified cross connection control technician, in accordance with the applicable testing procedures associated with each specific certifying agency. When applicable the testing procedure shall be performed for the identified backflow prevention assembly in its entirety in accordance with one of the following applicable standards: ASSE 5013, ASSE 5015, ASSE 5020, ASSE 5047, ASSE 5048, ASSE 5052, ASSE 5056, CSA B64.10, CSA B64.10.1 or the testing procedures provided in the 10th Edition Manual of Cross-Connection Control from the University of Southern California's Foundation for Cross-Connection Control and Hydraulic Research.
The testing procedures from the 10th Edition Manual of Cross-Connection Control from the University of Southern California's Foundation for CrossConnection Control and Hydraulic Research is incorporated by reference, and may be examined at the Colorado Plumbing Board's office at 1560 Broadway, Suite 1350, Denver, Colorado 80202, during normal business hours, Monday through Friday, except days designated as state holidays. Certified copies of the 10th Edition Manual of Cross-Connection Control shall be provided at cost, upon request. The Board or the Board's staff will provide information regarding how the 10th Edition Manual of Cross-Connection Control may be examined for free at the state public depository library. The 10th Edition Manual of Cross-Connection Control is also available from the agency, organization or association originally issuing the code, standard, guideline, or rule at: USC Foundation Office, Research Annex 219, Los Angeles, CA 90089-7700 or (https://fccchr.usc.edu/). This rule does not include any later amendments or editions of the code, standard, guideline, or rule.
Components of the condensate disposal system shall be cast iron, galvanized steel, copper and copper alloy, cross-linked polyethylene, polyethylene, ABS, CPVC, PVC or polypropylene pipe or tubing. Components shall be selected for the pressure and temperature rating of the installation. Joints and connections shall be made in accordance with the applicable provisions of Chapter 7 relative to the material type. Condensate waste and drain line size shall be not less than 3/4-inch (19.1 mm) internal diameter and shall not decrease in size from the drain pan connection to the place of condensate disposal. Where the drain pipes from more than one unit are manifolded together for condensate drainage, the pipe or tubing shall be sized in accordance with Table 314.2.2.
[M] TABLE 314.2.2
CONDENSATE DRAIN SIZING
|EQUIPMENT CAPACITY||MINIMUM CONDENSATE |
|Up to 20 tons of refrigeration||3/4 inch|
|Over 20 tons to 40 tons of refrigeration||1 inch|
|Over 40 tons to 90 tons of refrigeration||11/4 inch|
|Over 90 tons to 125 tons of refrigeration||11/2 inch|
|Over 125 tons to 250 tons of refrigeration||2 inch|
For SI: 1 inch = 25.4 mm, 1 ton of capacity = 3.517 kW.
In addition to the requirements of Section 314.2.1, where damage to any building components could occur as a result of overflow from the equipment primary condensate removal system, one of the following auxiliary protection methods shall be provided for each cooling coil or fuel-fired appliance that produces condensate:
- An auxiliary drain pan with a separate drain shall be provided under the coils on which condensation will occur. The auxiliary pan drain shall discharge to a conspicuous point of disposal to alert occupants in the event of a stoppage of the primary drain. The pan shall have a depth of not less than 11/2 inches (38 mm), shall be not less than 3 inches (76 mm) larger than the unit or the coil dimensions in width and length and shall be constructed of corrosion-resistant material. Galvanized sheet metal pans shall have a thickness of not less than 0.0236-inch (0.6010 mm) (No. 24 gage) galvanized sheet metal. Nonmetallic pans shall have a thickness of not less than 0.0625 inch (1.6 mm).
- A separate overflow drain line shall be connected to the drain pan provided with the equipment. Such overflow drain shall discharge to a conspicuous point of disposal to alert occupants in the event of a stoppage of the primary drain. The overflow drain line shall connect to the drain pan at a higher level than the primary drain connection.
- An auxiliary drain pan without a separate drain line shall be provided under the coils on which condensate will occur. Such pan shall be equipped with a water-level detection device conforming to UL 508 that will shut off the equipment served prior to overflow of the pan. The auxiliary drain pan shall be constructed in accordance with Item 1 of this section.