suction point

English

Etymology

suction +‎ point

Noun

suction point (plural suction points)

  1. A hole in the floor exposing a pit beneath the foundation of a building, used for soil suction in radon mitigation.
    • 2023 January 3, “Radon Mitigation”, in (Please provide the book title or journal name)‎[1], Lincoln, Nebraska: Nebraska Department of Health & Human Services Division of Public Health, Radon Program, retrieved 1 November 2024, page 2:
      A five-inch suction point (the size of a CD) that will be drilled through the floor in an unfinished storage area or your utility room.
  • suction pit
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