Division 17 Drill rig

A machine which is used for drilling holes on construction sites by

• percussive drilling

• rotary drilling

• rotary percussive drilling.

Drill rigs are stationary during drilling. They may move from one place of work to another, under their own power. Self-propelled drill rigs include those mounted on lorries, wheeled chassis, tractors, crawlers, skid bases (pulled by winch). When drill rigs are mounted on lorries, tractors and trailers, or a wheel-based, transportation may be carried out at higher speeds and on public roads.