| 摘要 |
Flat quadrilateral panel (1, 11) for laying parallel to and alongside others to form the traffic-bearing surface (P) of a floor raised above a sub-floor by a plurality of supports on which the flat panels (1, 11) rest, which panel consists of a concave metal tray (5, 15) with the concavity uppermost and filled with a layer (6) of synthetic anhydrite hardened by setting. In the flat panel (1) in question, the inner surface (S) of the said tray (5, 15) exhibits no interruption due to holes or incisions interposed between its various parts, and is provided with a plurality of purchase elements (7i, 17i) to bond it securely to the said layer (6) of synthetic anhydrite. |
