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  2. Drain-waste-vent system - Wikipedia

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

    A sewer pipe is normally at neutral air pressure compared to the surrounding atmosphere.When a column of waste water flows through a pipe, it compresses air ahead of it in the system, creating a positive pressure that must be released so it does not push back on the waste stream and downstream traps, slow drainage, and induce potential clogs.

  3. 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 ...

  4. When should you remove snow and icicles from your roof? - AOL

    www.aol.com/weather/remove-snow-icicles-roof...

    In the world of a child, knocking huge icicles hanging from a roof is the most fun game the winter can provide. But to the wallets of a homeowner, knocking huge icicles hanging from a roof can be ...

  5. Drain (plumbing) - Wikipedia

    en.wikipedia.org/wiki/Drain_(plumbing)

    Pool drain vortex as viewed from above the water at Grange Park wading pool Underwater view of drain, showing vortex-formation phenomenon. A drain is the primary vessel or conduit for unwanted water or waste liquids to flow away, either to a more useful area, funnelled into a receptacle, or run into sewers or stormwater mains as waste discharge to be released or processed.

  6. Ridge vent - Wikipedia

    en.wikipedia.org/wiki/Ridge_vent

    A ridge vent is a type of vent installed at the peak of a sloped roof which allows warm, humid air to escape a building's attic. Ridge vents are most common on shingled residential buildings. Ridge vents are also used in industrial warehouses to help release the hot air and help circulate comfortable air inside the building .

  7. Canopy (architecture) - Wikipedia

    en.wikipedia.org/wiki/Canopy_(architecture)

    A canopy is a type of overhead roof or else a structure over which a fabric or metal covering is attached, able to provide shade or shelter from weather conditions such as sun, hail, snow and rain. They are frequently found at bus shelters and train station platforms. [1] A canopy can also be a tent, generally without a floor.