Other Trenchless Options

Percussion Moling

Pipe Bursting

Installation of a new pipe by pushing or pulling a head through an existing pipe, breaking the existing pipe to allow the new pipe to be "t h r e a d e d" through.  Many pipes are located in areas where traditional opentrench replacement methods are not feasible.  Pipe Bursting is becoming the preferred method for trenchless installation of new pipe.  The many advantages of this method include: replacement with a new pipe along the same path of the existing pipe; the ability to “upsize” the diameter of the existing pipe; no surface disruption.  This method can be used on clay pipe, concrete pipe, cast iron, and PVC.  Installation sizes from 4” to 24” in diameter.  Bay State Piping Co. is also experienced in installing in rock.


Pipe Splitting

Similar to pipe bursting, the head cuts the existing pipe as it is pulled through, allowing the new pipe to be threaded.  This method has the same trenchless advantages but is used on ductile iron and steel pipes. Installation sizes from 1” to 6” in diameter.



Pipe Ramming

Installation is achieved by pushing an open-ended casing with a pneumatically operated percussion device. Soil is not removed from the sleeve until the crossing is completed.  This process has advantages in the ease of setup, smaller size of bore pit, and the capability to bore through cobbles and small boulders.  High groundwater tables are more easily dealt with. Workers are not required to remain in the excavation during the operation, which is an important consideration on contaminated sites. Casing sizes from 8” to 36” in diameter.