Pipe Trench

Excavation, bedding, pipe displacement, backfill, and spoil truck loads.

Trench

Run length (ft)Trench width (in)Typically OD + 12–24 inTrench depth (ft)

Pipe OD (in)Outside diameterBedding (in)Below pipe — typical 4–6 inInitial cover (in)Select fill above pipe crown

Excavation177.78cy

Bedding11.11cy

Pipe displacement5.82cy

Initial backfill (sand/select)38.63cy

Common fill (above)122.22cy

Total backfill160.85cy

Swell (%)Truck capacity (cy)

Spoil (loose)213.33cy

Truck loads15.2loads

Spoil = full excavation as bank volume × (1 + swell). Reused common fill on site reduces hauling — confirm with project specs.