Method for making cavity in concrete floor comprises closing cavity upper part with cover fixed to formwork panel

摘要

The method for making a cavity (17) in the thickness of a floor (14) comprises closing the upper part of the cavity with a cover (1) fixed to a formwork panel by means of nails (13b). The formwork consists of a base (4) and a vertical wall (4a). The cover is provided with handles (7) and an embedment (8) connects it to the blub (9) of the vertical walls.