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Methodology

Our specialty is “total rehabilitation.”  Depending upon your needs, we use both Pipe Bursting and Open Cut methodologies to rehabilitate your underground utilities.

 We use both the pneumatic and static methods of pipe bursting to replace existing pipe structures. How is it done?

During the pneumatic bursting process, a steel cable from a constant tension winch is inserted into the existing pipe from the receiving manhole to the insertion pit. In the insertion pit, the pneumatic tool, expander, and new pipe are connected to the end of the cable.  The percussion from the pneumatic tool (combined with the assembly being guided and pulled through the pipe) fractures the host pipe into the surrounding soil and the new pipe is simultaneously pulled into place .

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During the static bursting process, a segmented steel rod is pushed through the existing pipe from the receiving machine pit to the insertion pit.  In the insertion pit, the end of the rod is connected to an assembly of a solid conical steel  bursting head, and new HDPE/DI/PVC pipe.  As this assembly is pulled back  through the pipe using constant static pull, the bursting head displaces the host  pipe into the surrounding soil as the new pipe is simultaneously pulled into place.

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The appropriate pipe bursting method is generally preferred over the Open Cut method where it is important to keep disruption above ground to a minimum. The choice between the static and pneumatic methods of pipe bursting will depend on a number of factors, including specific project specification requirements, ground conditions.

Open Cut

Open Cut, as the name implies, is accomplished by simply digging a trench, replacing the pipe manually, and then refilling the trench.  This method is typically used only where Pipe Bursting is not feasible.

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