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 ?
The archery field is a turfed expanse of levelled backfilled land, measuring 183 by 100m, and marked down its length by an abstract forest (a memory of Sherwood perhaps) -- a double band of poles which, echoing an arrow's trajectory, diminish in height as they approach the target end.
Northwest Airlines, currently operating under bankruptcy protection, quickly backfilled some of the lost service, resulting in a net decline in enplanements for fiscal 2006 of just 9.
For pipeline padding and backfilling, it allows material to be screened on site and then backfilled directly into a trench, eliminating the need for a dedicated stationary screening machine.
While Northwest Airlines backfilled a portion of this loss, overall enplaned passenger declines year-to-date fiscal 2006 are down 12.