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  2. Sump pump - Wikipedia

    en.wikipedia.org/wiki/Sump_pump

    Sump pumps are used where basement flooding may otherwise happen, and to solve dampness where the water table is near or above the foundation of a structure. Sump pumps send water away from a location to any place where it is no longer problematic, such as a municipal storm drain, a dry well, or simply an open-air site downhill from the building (sometimes called "pumping to daylight").

  3. Uniform Plumbing Code - Wikipedia

    en.wikipedia.org/wiki/Uniform_Plumbing_Code

    Chapter II is the largest chapter at 45 pages and includes "Plumbing Regulations of the New York City Board of Health". On page 25 Dr. Tracy presents a "plan of construction" that was recommended by the Board of Health but no date is provided and it is not stated whether the city adopted this proposal or not. The Board of Health's plan ...

  4. Total dynamic head - Wikipedia

    en.wikipedia.org/wiki/Total_dynamic_head

    In fluid dynamics, total dynamic head (TDH) is the work to be done by a pump, per unit weight, per unit volume of fluid.TDH is the total amount of system pressure, measured in feet, where water can flow through a system before gravity takes over, and is essential for pump specification.

  5. Net positive suction head - Wikipedia

    en.wikipedia.org/wiki/Net_positive_suction_head

    Remembering that the minimum requirement is 600 mm above the NPSH R therefore this pump will not be able to pump the 70 degree Celsius liquid and will cavitate and lose performance and cause damage. To work efficiently, the pump must be buried in the ground at a depth of 2.4 metres plus the required 600 mm minimum, totalling a total depth of 3 ...

  6. Drainage equation - Wikipedia

    en.wikipedia.org/wiki/Drainage_equation

    the permissible long term average depth of the water table (Dw) on the basis of agricultural drainage criteria; the soil's hydraulic conductivity (Ka and Kb) by measurements; the depth of the bottom of the aquifer (Di) the design drain spacing (L) can be found from the equation in dependence of the drain depth (Dd) and drain radius (r ...

  7. Interceptor ditch - Wikipedia

    en.wikipedia.org/wiki/Interceptor_ditch

    Sump pits are also placed at suitable intervals for installation of centrifugal pumps to remove the water collected in an efficient manner. [2] In fine sands and silts, there may be sloughing, erosion or quick conditions. For such type of soils the method is confined to a depth of 1 to 2 m.

  8. Lift irrigation - Wikipedia

    en.wikipedia.org/wiki/Lift_irrigation

    Lift irrigation schemes must accomplish two main tasks: first, to carry water by means of pumps or other way, from the water source to the main delivery chamber, which is situated at the top most point in the command area.

  9. Suction caisson - Wikipedia

    en.wikipedia.org/wiki/Suction_caisson

    A suction caisson can effectively be described as an inverted bucket that is embedded in the marine sediment.Attachment to the sea bed is achieved either through pushing or by creating a negative pressure inside the caisson skirt by pumping water out of the caisson; both of these techniques have the effect of securing the caisson into the sea bed.