Plumbing fixtures, drains and appliances used to receive or discharge liquid wastes 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.
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 nonpotable graywater system in accordance with the applicable provisions of Sections P2910, P2911, and P2912.
The water and drainage system of any building or premises where plumbing fixtures are installed shall be connected to a public or private water supply and a public or private sewer system. As provided for in Section 103.5 of Part I of the Virginia Uniform Statewide Building Code (13VAC5-63) for functional design, water supply sources and sewage disposal systems are regulated and approved by the Virginia Department of Health and the Virginia Department of Environmental Quality.
Note: See also the Memorandums of Agreement in the "Related Laws Package," which is available from the Virginia Department of Housing and Community Development.
Piping shall be supported in accordance with the following:
|PIPING MATERIAL||MAXIMUM HORIZONTAL SPACING (feet)||MAXIMUM VERTICAL SPACING (feet)|
|Copper or copper-alloy pipe||12||10|
|Copper or copper-alloy tubing (11/4 inches in diameter and smaller)||6||10|
|Copper or copper-alloy tubing (11/2 inches in 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)||4b|
|CPVC pipe or tubing (1 inch in diameter and smaller)||3||10b|
|CPVC pipe or tubing (11/4 inches in diameter and larger)||4||10b|
|PB pipe or tubing||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|
|Stainless steel drainage systems||10||10b|
For SI: 1 inch = 25.4 mm, 1 foot = 304.8 mm.
Each length of pipe and each pipe fitting, trap, fixture, material and device utilized in a plumbing system shall bear the identification of the manufacturer and any markings required by the applicable referenced standards. Nipples created from the cutting and threading of approved pipe shall not be required to be identified.
Exception: Where the manufacturer identification cannot be marked on pipe fittings and pipe nipples because of the small size of such fittings, the identification shall be printed on the item packaging or on documentation provided with the item.