Small/large diameter perforator
The large and/or small diameter driller has some specific training requirements (small and/or large diameter drilling license, each of them has the duration of 40 h and is renewed every 5 years) therefore, has taken a course and obtained a specific qualification for the use of complex machinery. In carrying out their activities, drillers deal with drilling activities for the construction of foundation works (small diameter means micropiles - tie rods - anchors) and large diameter (foundation piles - diaphragm walls).
Small and/or large diameter drilling license.