Hammer & Pipe Ramming

A pneumatic ramming tool drives the casing forward without removal of spoils.  Spoils are removed by various methods, dependent on soil types, after the casing is in place.


  • Well suited for cobbles and running sands
  • Lowest probability of surface subsidence


  • Line and grade accuracy (unless utilizing GBM in conjunction)
  • Casing thickness
  • Drive length limited by soil conditions