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  2. Drain-waste-vent system - Wikipedia

    en.wikipedia.org/wiki/Drain-waste-vent_system

    In the U.S., every plumbing fixture must also be coupled to the system's vent piping. [1] Without a vent, negative pressure from water leaving the system can slow flow (resulting in clogs) or cause a siphon to empty a trap. The high point of the vent system (the top of its "soil stack") must be open to the exterior at atmospheric pressure.

  3. Rainscreen - Wikipedia

    en.wikipedia.org/wiki/Rainscreen

    A screen in general terms is a barrier. [4] The rainscreen in a wall is sometimes defined as the first layer of material on the wall, the siding itself. [2] Also, rainscreen is defined as the entire system of the siding, drainage plane and a moisture/air barrier.

  4. Gooseneck (piping) - Wikipedia

    en.wikipedia.org/wiki/Gooseneck_(piping)

    Gooseneck vent with check valve being repainted. A gooseneck (or goose neck) is a 180° pipe fitting at the top of a vertical pipe that prevents entry of water. Common implementations of goosenecks are ventilator piping or ducting for bathroom and kitchen exhaust fans, ship holds, landfill methane vent pipes, or any other piping implementation exposed to the weather where water ingress would ...

  5. Termite barrier - Wikipedia

    en.wikipedia.org/wiki/Termite_barrier

    To effectively exclude subterranean termites, screen apertures smaller than 0.02 inches (0.5 mm) are required. [ 1 ] Application areas for screens in the building envelope include weep holes, soffits, gable and ridge vents, among others.

  6. Sanitary manhole - Wikipedia

    en.wikipedia.org/wiki/Sanitary_manhole

    Sanitary manholes should be constructed at locations where there is a change from a simple straight sewer line. These include all junctions that combine multiple lines into one or split from one, bends, changing in elevation, changing in pipe size, and changing in pipe type.

  7. Piping and plumbing fitting - Wikipedia

    en.wikipedia.org/wiki/Piping_and_plumbing_fitting

    Any material permitted by the plumbing, health, or building code (as applicable) may be used, but it must be compatible with the other materials in the system, the fluids being transported, and the temperature and pressure inside (and outside) the system. Brass or bronze fittings are common in copper piping and plumbing systems.

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