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Grundocore core drills
for the perfect construction pit

Circular construction pits allow fast and particularly gentle access to the underground infrastructure without classical excavation work. An essential advantage of the round construction pit compared to a conventional square-cut excavation pit is the long-term strength after re-closure.

For producing these round construction pits, thecore drill bits of a GRUNDOCORE coring machine make a circular cut into the surface made of asphalt, concrete or reinforced concrete. The core hole is neatly cut out and later re-inserted, so that the surface is sustainably restored. That way, minimally invasive keyholes and even walk-in round construction pits can be produced with the core hole drill, avoiding subsequent cost.

Advantages of Grundocore core drills

  • Conceptual solution for the trenchless installation and renewal of water, gas, power and data property service connections through a keyhole
  • The GRUNDOCORE series comprises for coring machines for keyholes from 650 mm to 2.000 mm Ø
  • The keyhole causes even lower surface damage and subsequent costs compared to conventional square-cut excavation pits
  • Keyhole means safe, more productive and reduced reinstatement surface work
  • For assembly work inside the keyhole a variety of special telescopic tools are available 

APPLICATION RANGE of Grundocore core drills

  • Core cutting of round construction pits from Ø 650 to 2.000 mm in asphalt, concrete or reinforced concrete
  • Construction of minimally invasive keyholes up to walk-in construction pits
  • Core holes as start/target pits for new pipe installation
  • Core holes for service and repair works, e.g.
    • Setting of blind caps
    • Exchange of gate valves
    • Removal of fittings
    • Cleaning of supply lines

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THE ROUND CONSTRUCTION PIT
THE METHOD OF THE FUTURE

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