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 gray water system in accordance with the applicable provisions of Sections P2909, P2910 and P2911.
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 103.10 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.
In flood hazard areas as established by Table R301.2(1):
Trenching installed parallel to footings shall not extend below the 45-degree (0.79 rad) bearing plane of the bottom edge of a wall or footing (see Figure P2604.4).
Piping shall be supported in accordance with the following:
- Piping shall be supported to ensure alignment and prevent sagging, and allow movement associated with the expansion and contraction of the piping system.
- Piping in the ground shall be laid on a firm bed for its entire length, except where support is otherwise provided.
- Hangers and anchors shall be of sufficient strength to maintain their proportional share of the weight of pipe and contents and of sufficient width to prevent distortion to the pipe. Hangers and strapping shall be of approved material that will not promote galvanic action. Rigid support sway bracing shall be provided at changes in direction greater than 45 degrees (0.79 rad) for pipe sizes 4 inches (102 mm) and larger.
- Piping shall be supported at distances not to exceed those indicated in Table P2605.1.
|PIPING MATERIAL||MAXIMUM HORIZONTAL |
|MAXIMUM VERTICAL |
|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||2.67 (32 inches)||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/aluminum/polyethylene (PE-AL-PE) pipe||2.67 (32 inches)||4b|
|Polyethylene of raised temperature (PE-RT) pipe||2.67 (32 inches)||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.
- The maximum horizontal spacing of cast-iron pipe hangers shall be increased to 10 feet where 10-foot lengths of pipe are installed.
- Midstory guide for sizes 2 inches and smaller.