Abstract: A prefabricated industrial floor for forming a multi-storey prefabricated structure consisting of an interlocking node frame with a capital totally contained within the floor thickness (19), formed from a plurality of tile elements (11) arranged side by side parallel to each other which do not require the laying of a make-up casting, which can have the floor surface already incorporated, and which form a service compartment (22) on the ceiling side and a service compartment (21, 32) on the flooring side, both inspectionable, and from tile support beams (20) which are produced with the same equipment and have the same soffit appearance. The capital, beams and tiles are provided with a series of holes (24, 24') which lighten the structure, which cannot be seen, and which can be used for service passages or for floor stiffening cross-members (25).

Abstract: A prefabricated tile for covering building roofings comprises a plurality of side-by-side light diffusion sites (13) defined by openings (15) provided through a lower flat slab (11) of said tile. From said lower flat slab (11) mutually opposite side walls (12) extend upwards with decreasing height from the middle to the ends of said tile, wherein through said side walls (12) openings (14) are provided to make the whole structure lighter and allow service equipment to run through.

Abstract: A roofing system for industrial buildings is based on a plurality of self-supporting tiles (10), prefabricated from reinforced concrete, having a generally "V"-shaped cross-section, wherein the wings (11) of the "V"-shaped cross-section extend from a longitudinal channel (14) designed to collect rain water, and in which the tile (10) ends, at its opposite ends, with respective closure heads (12) each of which is provided with a support block (15), which is designed to rest on a supporting carrier beam (16). The support block (15) is furthermore provided with protruding parts (18) designed to support the corresponding block (15) of a superimposed identical tile (10), with between pairs of tiles (10) skylight-roofing beam members and shed-roofing beam members being intercalated.