| 摘要 |
A preferably thermoplastic twin slab, in particular destined to be fastened to a concrete wall, consists of two slabs (1, 3) which are linked together in a liquid-tight manner with anchoring knobs (5) for anchoring to a wall, a leakage gap (2) being formed therebetween. The advantages of the invention are a high stability against outer forces, a low material consumption and a simple and economical production. Also disclosed is a process for producing this twin slab. |
