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SECTIONAL DRIVEN PILES

Sectional concrete pile - Sectional tubular pile

The sectional concrete pile is built up of prefabricated reinforced concrete sections. The sectional tubular pile is built up of tubular steel sections previously filled with concrete. The sections are joined by means of an interior or exterior pipe splice. The pile is driven by means of a small pile-driving rig with a drop hammer. Since the dimensions of the pile-driving rig as well as those of the pile section are adjusted to the working conditions, this system is extremely suitable for use in situations in which the working space is confined, or the working height or the access width is limited.



APPLICATIONS OF SECTIONAL DRIVEN PILES:
  • when the working height is limited, for example in existing buildings or in factory buildings under pipework, etc.; the sectional concrete pile is mainly used for industrial flooring;
  • in places which are difficult to reach, for example inside an existing building or in a garden with a narrow access;
  • in areas where loud vibrations from pile-driving are not permitted;
  • where work has to be carried out at low vibration levels.



TECHNICAL INFORMATION ON SECTIONAL DRIVEN PILES:

General:

  • Length of pile: depending on the depth of the bearing stratum;
  • Raking piles: in general not used;
  • Minimum working height: from approx. 3 m, depending on dimensions of the pile and the type of pile-driving rig required;
  • Minimum access width: from 0.7 m, depending on the dimensions of the pile and the pile-driving rig required;
  • Minimum access height: from 1.7 m, depending on the dimensions of the pile and the pile-driving rig required;
  • Minimum distance from centre of pile to a wall: 400 mm or more, depending on the dimensions of the pile, the required type of machine and the working space available;
  • Monitoring and testing: recording the set of the pile per number of blows.

Sectional concrete piles:

  • Diameter of concrete pile sections: 230 mm, 280 mm, 310 mm, 350 mm;
  • Grade of concrete: C30/37;
  • Reinforcement: minimum longitudinal reinforcement 0.3%, FeB 500;
  • Maximum bearing capacity 500 kN (in the above-mentioned standard dimensions); the pile does not resist tensile forces;
  • The pile is built up of sections which are 1.5 m, 2 m or 3 m long;
  • Weight of drop hammer: 400 kg to 2500 kg depending on the dimensions of the pile and type of soil.

Sectional tubular pile:

  • Diameter of tubular sections: 133 mm, 168 mm, 219 mm;
  • Grade of concrete: C30/37;
  • Maximum bearing capacity 250 kN (in the above mentioned standard dimensions); the pile does not resist tensile forces;
  • The pile is built up of sections which are 1.5 m or 2 m long;
  • Other sizes are available on request;
  • Weight of drop hammer: 400 kg to 2500 kg depending on the dimensions of the pile and type of soil.

Subject to alteration

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