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  2. Cesspit - Wikipedia

    en.wikipedia.org/wiki/Cesspit

    In the UK, a cesspit is a closed tank for the reception and temporary storage of sewage; in North America, this is simply referred to as a "holding tank".Because it is sealed, the tank must be emptied frequently – on average every 6 weeks [2] – but frequency varies a great deal and can be as often as weekly or as rarely as quarterly.

  3. Pothole (landform) - Wikipedia

    en.wikipedia.org/wiki/Pothole_(landform)

    Other names used for riverine potholes are pot, (stream) kettle, giant's kettle, evorsion, hollow, rock mill, churn hole, eddy mill, and kolk. [1] Although somewhat related to a pothole in origin, a plunge pool (or plunge basin or waterfall lake ) is the deep depression in a stream bed at the base of a waterfall .

  4. Pothole - Wikipedia

    en.wikipedia.org/wiki/Pothole

    A pothole is a pot-shaped depression in a road surface, [1] usually asphalt pavement, where traffic has removed broken pieces of the pavement. It is usually the result of water in the underlying soil structure and traffic passing over the affected area.

  5. Dry well - Wikipedia

    en.wikipedia.org/wiki/Dry_well

    A sump in a basement can be built in dry well form, allowing the sump pump to cycle less frequently (handling only occasional peak demand). A French drain can resemble a horizontal dry well that is not covered. A larger open pit or artificial swale that receives stormwater and dissipates it into the ground is called an infiltration basin or ...

  6. Latrine - Wikipedia

    en.wikipedia.org/wiki/Latrine

    A pit latrine is a simple and inexpensive toilet, minimally defined as a hole (pit) in the ground. More sophisticated pit latrines may include a floor plate, or ventilation to reduce odor and fly and mosquito breeding (called ventilated improved pit latrine or "VIP latrine"). [5]

  7. Pit cave - Wikipedia

    en.wikipedia.org/wiki/Pit_cave

    Pit cave near Benagil in Lagoa, Portugal A caver rappelling into Mexico's enormous pit cave, Sotano de las Golondrinas Pit cave Haviareň, Little Carpathians. A pit cave, shaft cave or vertical cave—or often simply called a pit (in the US) and pothole or pot (in the UK); jama in Slavic languages scientific and colloquial vocabulary (borrowed since early research in the Western Balkan Dinaric ...

  8. Vacuum sewer - Wikipedia

    en.wikipedia.org/wiki/Vacuum_sewer

    It discharges into a collection sump that might collect sewage from 2-6 houses and is located in a public area. Vacuum technology is based on differential air pressure. Rotary vane vacuum pumps generate an operation pressure of -0.4 to -0.6 bar at the vacuum station, which is also the only element of the vacuum sewerage system that must be ...

  9. Sump - Wikipedia

    en.wikipedia.org/wiki/Sump

    In mining the term sump is used to describe a hole made in the floor of a level in a working, in the direction of a lower level either for the purpose of testing the trend of an ore vein, or for the purpose of ventilation. The equivalent of a sump on a boat is the bilge. In the human eye, the vitreous humour has a minor role as a metabolic sump ...

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