# US 5,704,174 A · Prefabricated industrial floor > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,704,174 A - Document ID: US5704174A - Status: Granted - Kind: A - Application number: 08/703,733 - Filed: 1996-08-27 - Granted: 1998-01-06 - Earliest claimed: 1993-11-09 - Assignees: DLC S.r.l. - Inventors: Alberto Dal Lago - Web page: https://patentgrep.com/patent/US5704174A ## CPC - E04B 5/04: with beams {or slabs} of concrete or other stone-like material, e.g. asbestos cement (E04B5/08, E04B5/14 take precedence) - E04B 1/20: the supporting parts consisting of concrete, e.g. reinforced concrete, or other stonelike material - E04B 5/043: {having elongated hollow cores} - E04B 5/06: {with beams} placed against one another {optionally with pointing-mortar} - E04B 5/43: Floor structures of extraordinary design; Features relating to the elastic stability; Floor structures specially designed for resting on columns only, e.g. mushroom floors ({anchoring devices for balconies with means for preventing cold bridging E04B1/0038}; extraordinary constructions in general E04B1/34) - E04B 5/48: Special adaptations of floors for incorporating ducts, e.g. for heating or ventilating (in block-shaped elements E04C1/39; in slab- or sheet-shaped elements E04C2/52) - E04B: GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS (border constructions of opening in walls, floors or ceilings E06B1/00; {electromagnetic shielding H05K9/0001}) ## 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). The structure, of high fire resistance, is designed so that, without any formal variation, the tile (11) can be replaced by a beam (edge beam, wind beam, beam for high concentrated loads). ## Claims ### Claim 1 A prefabricated industrial preformed concrete floor formed from a plurality of tile elements of variable height arranged side by side parallel to each other, characterized in that said side-by-side tile elements (11) form a series of service compartments (21, 22, 32) having a treading surface and defined apertures said service compartments being open at least at said treading surface, and having closure plates (17, 18, 30, 33) which are positionable at said defined apertures to provide coplanarity of said floor and to distribute loads without laying a make-up concrete casting and to form a finished floor surface, and having in each of said tile elements (11), side walls (13), said side walls being provided with a plurality of holes (24) said floor also having main frame beams (20) of variable height said main frame beams (20) having an upper and a lower surface said lower surface being in register with said tile elements (11) to provide coplanarity of said floor. ### Claim 2 (depends on 1) An industrial floor as claimed in claim 1, characterised in that main frame beam (20) of variable height are provided having their soffit identical to said tile element (11). ### Claim 3 (depends on 1, 2) An industrial floor as claimed in claim 1 or 2, characterised in that each of said tile elements (11) is provided with a plurality of holes (24) in its side walls (13). ### Claim 4 (depends on 2) An industrial floor as claimed in claim 2, characterised in that said main frame beams (20) are provided with a plurality of holes (24') in side walls. ### Claim 5 (depends on 1) An industrial floor as claimed in claim 1, characterized in that the side-by-side tile elements (11) have undersides which form underside service compartments (22) whereby said underside service compartments are closable by false ceiling elements (23) which form a flat soffit. ### Claim 6 A prefabricated industrial prestressed concrete floor with a floor thickness, said floor consisting essentially of a plurality of tile elements of variable height arranged side by side parallel to each other and having side-by-side tile elements (11) which form a series of service compartments (21, 22, 32) having a treading surface and defined apertures said service compartments being open at least at said treading surface, and having closure plates (17, 18, 30, 33) which are positionable at said defined apertures to provide coplanarity of said floor and to distribute loads without laying a make-up concrete casting and to form a finished floor surface, said tile elements being supported by an interlocked node frame formed with capital columns, said tile elements, said interlocked node frame and said capital columns being contained within the floor thickness without a make up casting.