| 摘要 |
<p>A panel shaped ceiling or floor element for a run-off on surfaces of structures flooded with liqs. is esp. applicable to a drain in a flat roof. It consists entirely of a panel-shaped basic unit (1), made of non-combustible heat-insulating foamed material, with a drainage passage (2) through it, widening towards the top in a sleeve shape. The upper side of the unit contains a holding depression (3), opening out into the passage in a shallow conical shape, while the widened sleeve contains an annular groove-shaped widened section (5) to accommodate a foil clamping ring. Drain construction and installation are simplified.</p> |
