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  2. Sanitary sewer - Wikipedia

    en.wikipedia.org/wiki/Sanitary_sewer

    A manhole cover for a sanitary sewer access point. View looking down into an open manhole showing two converging sanitary sewer lines. The larger line enters from the right and changes direction within the manhole to exit from the top of the photo. A smaller line enters from the bottom of the photo under the access steps.

  3. Manhole - Wikipedia

    en.wikipedia.org/wiki/Manhole

    PMG manholes in a city street, Perth, Western Australia Manhole being used to access sewer Installation of a fiber-optic manhole in Brooklyn, New York An uncovered manhole in Beirut, Lebanon. A manhole (utility hole, maintenance hole, [1] or sewer hole) is an opening to a confined space such as a shaft, utility vault, or large vessel.

  4. Sewerage - Wikipedia

    en.wikipedia.org/wiki/Sewerage

    Map of London sewer network, late 19th century Sewerage (or sewage system ) is the infrastructure that conveys sewage or surface runoff ( stormwater , meltwater , rainwater ) using sewers. It encompasses components such as receiving drains , manholes , pumping stations , storm overflows, and screening chambers of the combined sewer or sanitary ...

  5. Sanitary manhole - Wikipedia

    en.wikipedia.org/wiki/Sanitary_manhole

    A sanitary manhole under construction. A sanitary manhole (sewer manhole, [1] sanitary sewer manhole [2] or sewer maintenance hole [3]) is a manhole that is used as an access point for maintenance and inspection of an underground sanitary sewer system. Sanitary manholes are sometimes used as vents to prevent the buildup of pressurized sewage ...

  6. Manhole cover - Wikipedia

    en.wikipedia.org/wiki/Manhole_cover

    A round manhole and its cover. A manhole cover is a removable plate forming the lid over the opening of a manhole, an opening large enough for a person to pass through that is used as an access point for an underground vault or pipe. It is designed to prevent anyone or anything from falling in, and to keep out unauthorized persons and material.

  7. Culvert - Wikipedia

    en.wikipedia.org/wiki/Culvert

    A culvert under the Vistula river levee and a street in Warsaw. Construction or installation at a culvert site generally results in disturbance of the site's soil, stream banks, or stream bed, and can result in the occurrence of unwanted problems such as scour holes or slumping of banks adjacent to the culvert structure.

  8. Water supply network - Wikipedia

    en.wikipedia.org/wiki/Water_supply_network

    Attempts to expand water supply by governments are costly and often not sufficient. The building of new illegal settlements makes it hard to map, and make connections to, the water supply, and leads to inadequate water management. [4] In 2002, there were 158 million people with inadequate water supply. [5]

  9. List of New York City manhole cover abbreviations - Wikipedia

    en.wikipedia.org/wiki/List_of_New_York_City...

    This is a list of manhole cover markings found in New York City. Fiber-Optic Manhole Cover in NYC. Markings. Bell System; BECo = Brooklyn Edison Company;