摘要 |
<p>A support is a rail (8) with a rounded head (10), with which it grips into longitudinal fluting (11) on the underside (12) of a plate (3), which is notched for support on one side towards a higher level on an underside (6) of its longitudinal ends (4,5) and has a 6mm thickness in the center. The longitudinal fluting amounts 2mm or more.</p> |