The Pennine Terrafirmer is a a vibro stone column rig that is capable of doing up to 800mm diameter holes on its Caterpillar 330B base.
The technique is used for ground improvement for soil density compaction and increase bearing capacity.
The Vibroflot can be supplied for this rig as an optional extra, if required.
Deep vibratory techniques using Vibroflots are generally known as vibro compaction and vibro replacement. The techniques are used for densifying granular soils, as well as for realising stone columns.