Tubular foundation element

摘要

A foundation element 500 comprises a hollow-section tube 501 adapted to connect longitudinally with similar tubes, and at least one radially extending projection 502, 503 adapted to distribute axial loads. The projection preferably projects both outwards and inwards from the exterior and interior of the tube respectively. The projections may comprise a helical vane, possibly comprising a helix. The vane may extend normal to the side of the tube. Also claimed is a method of forming a foundation with a foundation element which has a radially extending projection and which is not retracted, wherein a load-bearing mounting platform is secured thereto. A further method is claimed wherein a pilot bore-hole is drilled and subsequently is reamed by a rotating foundation element.