Abstract: A prefabricated ceiling element for ceilings in buildings comprises a concrete ceiling panel (1, 1', 1") and a steel girder (2, 2', 2") having a T-section, the web of which has tips (2c, 2c') which are anchored in the concrete ceiling panel (1, 1', 1"). Free cutouts (2d) are located between the tips. The steel girder (2, 2', 2") extends only over the midportion of the ceiling panel (1, 1', 1"), so that at the ends of the panel support areas and installation lanes (4) remain freely accessible.

Abstract: A compound girder of an on-site assembly type is assembled to include components which rigidly interconnect two or more prefabricated ceiling panels (3a, 3b) in a bending stiff manner. The compound girder includes for each ceiling panel (3a, 3b) at least one web section (1a, 1b) and an upper chord section (2a, 2b). The girder further includes a continuous length lower chord (4). The lower chord (4) takes up the tension and shearing loads. The individual web sections (1a, 1b) are secured to the lower chord (4) by screw connections which prevent a sliding displacement between the connected elements relative to each other.