Franki Foundations

Mini steel cased driven piles

The mini steel cased driven piles is a closed ended, low energy driven full-displacement pile with a lost steel tube. The pile is formed using an internal free-fall hammer striking a dry concrete plug locked at the bottom of the casing. The tubular segments are welded together in function of the available free working height.

Construction Sequence

Fields of application

  • In confined, narrow and difficult to access working areas and/or spaces with restricted headroom.

  • In aggressive soil conditions and contaminated soils.

  • Suitable in soils with strong underground flow of water, where the fresh concrete is protected by the casing.

  • Well-suited for piling through cavities or very soft and unstable top or intermediate layers of soil where over-consumption of concrete is likely to occur. 

  • Where the cut-off level is located above ground level.

  • Possibility to maintain with great accuracy the concrete level: execution of non-concreted lengths is possible.

  • Wide range: industrial projects, infrastructure, hydraulic engineering works, railway works, housing construction, rehabilitation and renovation.

Environmental impact

  • Limited vibrations.

  • Limited noise pollution since driving is performed inside the tube.

  • No soil removal (soil displacement pile).

  • A stable, dry and flat work platform is required.

Technical Specifications

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