What Is Pipe Bursting?
Pipe bursting is a trenchless pipe-replacement method in which a hydraulically or pneumatically driven bursting head is pulled through an existing pipe by a cable winch from a receiving pit. The bursting head fractures (bursts) the old pipe outward into the surrounding soil while simultaneously pulling a new high-density polyethylene (HDPE) pipe into the same cavity. The end result is a brand-new full-diameter pipe in the footprint of the failed pipe — with zero trenching along the pipe run, only two small access pits (one at each end).
The method is governed by ASTM F1962 and standardised by NASSCO. It is distinct from CIPP pipe lining: bursting REPLACES the pipe entirely and allows upsizing (for example 3-inch to 4-inch); lining RESTORES the existing pipe wall only. Wooley operates Pow-R Mole pipe-bursting equipment — the client-confirmed manufacturer relationship that trains and certifies our crews — and fuses HDPE pipe on-site with an in-house hydraulic fusion welder rather than sub-contracting.