| 摘要 |
<p>A structural element (2) for making floors (1) in combination with beams (3) of foam construction material, provides a metal section (4, 5) hollow inside (9) wherein foam construction material (10) is put that fills its inner volume. The filling foam material may be cellular polyurethane. The structural element fits the shape of the central recess (3a) of the beam of foam construction material (3) to which it is associated. The hollow metal section can be formed by a first (4) and by a second (5) metal section coupled to each other. The addition of the foam construction material (8) and its hardening causes the side edges (7) of the second metal section (5) to force against the side edges (8) of the first metal section (4), turning said section into a steady and stiff structural element (2). A floor (1) made with the structural element (2) associated to the beam (3) is lighter with respect to the prior art and allows an application from below of plaster suspended ceilings (40); this step is easy and quick, by means of self tapping screws (11) that cross the metal section (4) and penetrate the foam construction material (10). Alternatively, the structural element (21) comprises a shell (23) of continuous plastic stiff material with concavity towards below, suitable for spanning floors.</p> |
