Abstract: A self-supporting construction element (1, 101) of expanded plastics, in particular for manufacturing floor elements and walls of buildings in general comprises: (1) a central body (2), substantially parallelepipedic in shape and having two opposite faces (6, 7); at least one reinforcing section bar (8,9) transversally extending across the central body (2) between the faces (6,7) thereof and embedded in the expanded plastics; a lath (16) for supporting at least one layer (17) of a suitable covering material, associated to a fin (11,12) of the reinforcing section bar (8,9) lying flush with and substantially parallel to at least one of the faces (6,7) of the construction element (1,101).

Abstract: A composite panel (1) particularly suited for erecting buildings with a structural load-bearing wooden framework (4) is formed by a substantially parallelepiped body of expanded synthetic material having a standardized thickness, a modularly standardized width and a customized height, which is congruent with the design floor height of the building to be constructed. The panels have a plurality of longitudinal channels extending for the whole height of the panel. A series of channels (2,3) uniformly spaced and staggered in the sense of said width and of said thickness of the panel, are open on the adjacent face of the panel and have a T-shaped cross section. In these open channels fit T-shaped cross section wooden posts (4), the stem portion (4b) of which emerges out of said open channels and project from the surface of the panel.