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[[File:Precast drywell.jpg|thumb|Dry wells can easily be constructed from precast concrete rings]]
A dry well is related to a [[perforated catchbasin]], and also to a [[soakaway]].
A dry well is related to a [[perforated catchbasin]], and also to a [[soakaway]].
They are more usually a hollow structure, with the longest axis being vertically oriented.
They are more usually a hollow structure, with the longest axis being vertically oriented.