| 摘要 |
<p>The invention concerns a road equipment designed to cover a ditch (K) and comprising a cover (3) and girders (1, 2) comprising rabbets (11, 22), projecting edges (13, 24), and flat-lying edges (15, 26), the cover (3) being pressed on the rabbets (11, 22). The invention is characterised in that said equipment has, before it is set up, a configuration for installation wherein it comprises one or several bars (41) passing through the lower webs (17, 28) of the girders (1, 2) and fixed thereto and to the cover (3) to maintain in their final configuration, level adjusting screws (51, 53) being provided in the edges (15, 26) of the girders (1, 2) to define a polygon with stable lift.</p> |
