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PW Trenchless Construction with pipe bursting job
PW Trenchless Construction upsizes an existing 8" (200mm) PVC sewer main to a 18" (450mm) using pipebursting. When replacing pipes with the static bursting technique, a bursting rod is pushed from a start pit (shaft) through the old pipe into a target pit (shaft). On arrival in the target pit the bursting blade with the new pipe connected is attached to the rod string. When pulling back the rod string the old pipe is destroyed by the blade, the pipe fragments are displaced into the surrounding soil and the new pipe - of equal or larger diameter - is pulled in simultaneously. Usually long plastic pipes are pulled in - in narrow spaces also short pipe modules can be installed.