| 摘要 |
<p>The plinth is made from profiles (2) that have a central flat part (3) aving two extensions, high and low, in the form of channels (4), the concave sides of which are oriented towards the support posts of the guard rail. The free edges (5) of the channels are in the same plane as the central part (3), the latter having two series of longitudinal holes (6) arranged parallel to each other at two different heights and offset longitudinally. The offset of the holes and their length is such that a fixing bolt will be able to traverse one or other of the two series of holes.</p> |
