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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. United Concrete Pipe Corporation - Wikipedia

    en.wikipedia.org/wiki/United_Concrete_Pipe...

    United Concrete Pipe Corporation was a manufacturing and construction company based in Southern California. It was in the business of constructing and installing concrete water pipes for irrigation, water lines, sewers, and drains, and after 1930 expanded into general construction, building concrete bridges, tunnels, concrete roads, and ...

  4. San Diego County Water Authority - Wikipedia

    en.wikipedia.org/wiki/San_Diego_County_Water...

    The San Diego County Water Authority (SDCWA) is a wholesale supplier of water to the roughly western third of San Diego County, California. The Water Authority was formed in 1944 by the California State Legislature. SDCWA serves 22 member agencies with 34 Board of Director members. [1]

  5. San Diego Aqueduct - Wikipedia

    en.wikipedia.org/wiki/San_Diego_Aqueduct

    In 1968, the construction of Pipeline 4, of the Second Aqueduct, began. Pipeline 4 was completed in 1971. In 2005, the San Diego County Water Authority began construction on the 11-mile-long (18 km), 8.5-foot-wide (2.6 m) San Vicente Pipeline, connecting San Vicente Reservoir to the Second Aqueduct. Construction on the project was completed in ...

  6. Cast iron pipe - Wikipedia

    en.wikipedia.org/wiki/Cast_iron_pipe

    Cast iron pipes piled up near the construction site. Cast iron pipe is pipe made predominantly from gray cast iron.It was historically used as a pressure pipe for transmission of water, gas and sewage, and as a water drainage pipe during the 17th, 18th, 19th and 20th centuries.

  7. Plumbing - Wikipedia

    en.wikipedia.org/wiki/Plumbing

    The pipes were hollowed-out logs which were tapered at the end with a small hole in which the water would pass through. [23] The multiple pipes were then sealed together with hot animal fat. Wooden pipes were used in Philadelphia, [24] Boston, and Montreal in the 1800s. Built-up wooden tubes were widely used in the US during the 20th century.