| 摘要 |
A foundation pile member (1) is in the form of a body of revolution tapering downwardly between a broad upper end (2) and a narrower lower end (3). The periphery (4) of the foundation is provided with a ridge (7), preferably in the form of a screw thread (6), which urges it into the ground when rotated and subjected to a downward force. The foundation may be formed of concrete, plastics or wood and may further have a covering of friction-reducing material. A recess (12) or projection may be provided at the upper end (2) of the foundation for engagement by a rotating drive. |
