Backfill definition

Backfill means any foreign material, usually pea gravel or sand, which usually differs from the native soil and is used to support or cover the underground storage tank system.
Backfill means the placement of fill material within a specified depression, hole or excavation pit below the surrounding adjacent ground level as a means of improving flood water conveyance or to restore the land to the natural contours existing prior to excavation.
Backfill means a soil which is clean and free of foreign debris, placed over the disposal area and fill extensions.

Examples of Backfill in a sentence

  • Backfill plugs shall be installed at intervals not to exceed 50 ft (15 m).

  • Backfill plugs shall not have any fine aggregate bedding or backfill, but shall be entirely cohesive soil or any class of concrete.

  • Backfill plugs are to be 4 ft (1.2 m) long, measured parallel to the trench, full trench width and depth.

  • Backfill to existing grade, and restore disturbed area to the satisfaction of the Engineer.

  • Backfill at the inside of bridge wing-walls shall be placed before railing bases on the wing-walls are constructed.


More Definitions of Backfill

Backfill means only the material placed in the excavation zone to support the petroleum storage tank system;
Backfill or "backfilling" means to fill an excavation or pit with material to a predetermined configuration by reducing the peaks, valleys, and outslopes of the spoil, and filling the cut.
Backfill means the soil that is placed in a trench or bed that surrounds or is on top of the dispersal media within the excavation up to the naturally occurring soil surface.
Backfill means replacement of suitable material compacted as specified around and over a pipe, conduit, casing, or gallery.
Backfill means suitable material that is used to replace excavated material around a structure or that is used in a pipe trench to replace excavated material above the granular surround of the pipe to the underside of the roadway/footway construction or the underside of the top-soil reinstatement in a green area as set out in this Code of Practice;
Backfill means only the material placed in the excavation