Using a ring vibratory hammer is a highly efficient way of piling: you only need a short leader to drive long tubes. Instead of clamping on top, this variable moment-type of vibratory hammer clamps onto the outer wall of the tube. As closed end tubes for stone column piles are cast-in-situ, piles can be constructed.
Our Ring Vibrators are patented with a MDC – Moment Difference Control – system. The resonance-free start and stop of the machine makes it ideal for pile driving in vibration sensitive areas.