| 摘要 |
<p>The grid element is slip-preventive and non-rotting on surfaces where water or other liquids may collect. It is combined with other to form a wide-area grating with the tread surface formed by strips intersecting st the same level. The broad side (16) of the tread strips (2, 3) provides the tread surface (1). Cups (9) are formed on the underside of the strip intersections with the central axis (8) vertical to the tread surface. The opening edges (10) of these form at least part of the grating's installation surface (28). The cup sheaths(11) are pref. of hollow cylindrical shape.</p> |
