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  NASTT's 2012 Introduction to Trenchless Technology Short Course New Installation Pt 2 Session 4

 

Auger Boring is technique for forming a bore from a drive pit to a reception pit, by means of a rotating cutting head. Spoil is removed back to the drive shaft by helically wound auger flights rotating in a steel casing.

Pipe Ramming is a non-steerable system of forming a bore by driving an open-ended steel casing using a percussive hammer from a drive pit. The soil may be removed from the casing using multiple methods.

Moling and Piercing generally require minimum excavation and are typically used as forms of online replacement, breaking aside the existing piping fabric and pulling through a new structural lining.

Pilot Tube is a multi-staged method of accurately installing a product pipe by use of a guided pilot tube and followed by an upsized product pipe.

Guided Boring is a method for the installation of pipes, conduits and cables using a surface-launched drilling rig. A pilot bore is drilled using a rotating drill string and is then enlarged by a back reamer to the size required for the product pipe. 

Sponsored by: NASTT

  


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