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Gully
An open-topped box, made of glazed fireclay, cast iron, or plastic, at the base of a wall, into which a downpipe discharges. The top of the gully should be covered by a perforated plate, which can be removed to allow debris to be cleared. A pipe from the side of the gully should link to a drain carrying the water away from the building.
Related Words Cast iron work; Down pipe; Fireclay
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