Cover for concrete floor casing - has thick concrete prefabricated plates coupled to stone slabs by angle iron

摘要

The filigree cover for the casing of concrete floors comprises several cm. thick concrete plates of prefabricated length and width. The leading sides (4) of the plates (3) are provided with stone slabs (9) which are connected to the concrete plates by angle iron (7) and whose height corresponds to that of the concrete floor which is to be poured. The spacing between the stone slabs and concrete plates is adjustable. The vertical limb of the angle iron is located in a recess (8) in the stone slab while the horizontal limb has a force fit in a borehole in the concrete plate.