Backfill

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backfill

[′bak‚fil]
(civil engineering)
Earth refilling a trench or an excavation around a building, bridge abutment, and the like.
(mining engineering)
Waste sand or rock used to support the mine roof after removal of ore.

Backfill

Crushed stone or coarse soil placed around the foundation walls to provide drainage for water collecting in the soil behind the wall.

backfill

Soil which is replaced in an area that has been excavated previously.

backfilling, backfill

1. Rough masonry built behind a facing or between two faces.
2. Filling over the extrados of an arch.
3. Brickwork in spaces between structural timbers. Also see nogging
4. Soil or crushed stone used to fill the space between the excavation or sheeting and the exterior of a structure, or around the foundation walls to provide means for water to drain away from a foundation.
References in periodicals archive ?
If the backfill is not adequate, the screw output will be unstable and even the smallest variation in output entering the discharge section will cause the screw to vary in its fill length.
When a new police station opens in Mission Hills next January, it will further strain the LAPD's limited officer ranks and cost about $364,000 to promote officers and backfill positions, officials said Monday.
FELCO's backfill conveyor places material in a hopper that travels the length of the conveyor and is returned to the trench on a cross conveyor.