sheet piling

Noun

sheet piling (countable and uncountable, plural sheet pilings)

1. A type of retaining wall used during construction by driving interlocking sheets of material into the ground.
   • During the two Sundays preceding the accident, the track had been lifted to permit installation of shallow raft abutments some five to six feet under the track, which will eventually support a temporary bridge span during the construction of the permanent span, and sheet piling across the formation...1960 September, “Talking of Trains: Accident at Holmes Chapel”, in Trains Illustrated, page 522
2. The material used to assemble a sheet pile retaining wall.
   • During the partial line closure, engineers installed sheet piling to act as a retaining wall to support the embankment and road, and make it safe to carry out long-term repairs.2023 March 8, “Network News: Section of Cotswold Line reopens after landslip”, in RAIL, page 25