Moreover, a wide range of diameters and lengths can be obtained. Indeed it is possible to drill piles of a diameter from 40 to 140 cm. In terms of length, the equipment currently available allows to reach 35 ÷ 40 metres (with loader), depending on pile diameter and soil consistency.
The drilling method allows to cross a wide range of cohesive and non-cohesive soils, both in the presence and absence of aquifer. Any cobbles compatible with the auger diameter are easily displaced thanks to the power of the rotary heads.
Moreover, no shocks or vibrations are produced and it is therefore possible to work in town centres.