Soil displacement screw pile with lost tip

Vibration-free screw pile with double lateral soil displacement, without vertical soil transportation or decompression of soil around the tip. The shaft of the pile is cylindrical

Construction chart

Construction sequence

1. Positioning of the tube with  lost tip on the ground level.
2. The tube is screwed into the soil using a pull-down force.
3. During screwing in, the soil is horizontally displaced.
4. Once the required installation depth is reached, reinforcement is placed into the steel tube.
5. Casting of concrete through the tube
6. Withdrawal of the tube by means of oscillation. The tip is lost.
7. After concreting, additional head reinforcement can be placed into the freshly poured concrete if required.
8. Completion of the pile and moving the piling rig to the next pile.

Fields of application

  • Almost all soil profiles including moderately to densely packed layers of sand thanks to increased penetration.
  • Urban environments and industrial projects
  • Behaves like a soil displacement pile resulting in the development of high allowable bearing capacities.

Environmental impact

  • Vibration-free execution
  • Low-noise execution
  • Minimal removal of soil
  • A stable, dry and flat work platform is required

Technical details

  • Shaft diameters range from 300 to 560 mm
  • Tip diameters range from 450 to 670 mm (larger diameters optional)
  • Length dependent on the piling rig used: up to 35 m
  • Piles installed to accommodate compression or tension loads.
  • Maximum bearing capacity up to 3000 kN (in compression)
  • Inclined piles up to a maximum gradient of 1/3
  • Possibility to execute the pile with injection of grout

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