摘要 |
A wall of a web-shaped material (2) supported by vertical posts (1), which consist of at least one round tube (3,4,27) having coaxial at its end a helicoidal element (5), wherewith the tube is screwed into the ground, whereafter a sleeve (12), which forms part of a anchoring device (7,10,12) is slided over the tube (3,4,27) to secure the tube (3,4,27) to the ground. |