| 摘要 |
The present invention relates to a drainage element, comprising a load-bearing element (1) formed by internal cells (3) encompassing each other and external cells (3´). The inner walls (5) thereof define outer walls (5´) of the drainage element (2), in which the bottom surface (6) of the internal cell (3) inner walls (5) and external cell (3´) outer walls (5´) is larger than the upper surface (7) of the internal cell (3) inner walls (5) and external cell (3´) outer walls (5´). The bottom surface (6) of both the internal cells (3) and external cells (3´) of the load-bearing element (1) is provided with grooves (8). |
