Horizontal floor made up of a load-bearing structure and floor panels laid thereon

A horizontal floor, comprising:

• a load-bearing structure;
• and
• panels (7) that are positioned on the load-bearing structure and together define a floor surface,
• wherein the load-bearing structure comprises
• a main profile (1) fastened to vertical supports,
• secondary profiles (2) arranged transversely in relation to the main profile (1), the secondary profiles (2) being connected to the main profile (1) at respective ends thereof and supporting the panels (7) by way of an underside (7A) thereof, and
• a unitary connecting element (20) made up in one piece of
• a first fastening edge (21),
• a second fastening edge (22) extending parallel to the first fastening edge, and
• a central section (25) between the first fastening edge (21) and the second fastening edge (22),
• wherein the first fastening edge (21) is at least indirectly supported on and connected to the main profile (1), and
• wherein the first fastening edge (21) is connected to a vertical profile section of the main profile (1), and
• wherein the second fastening edge (22) is supported on the underside (7A) of one of the panels (7) and is connected to the one of the panels (7).