EP1867799A2 - Panneau préfabriqué pour la fabrication de sols et toits - Google Patents

Panneau préfabriqué pour la fabrication de sols et toits Download PDF

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Publication number
EP1867799A2
EP1867799A2 EP07110417A EP07110417A EP1867799A2 EP 1867799 A2 EP1867799 A2 EP 1867799A2 EP 07110417 A EP07110417 A EP 07110417A EP 07110417 A EP07110417 A EP 07110417A EP 1867799 A2 EP1867799 A2 EP 1867799A2
Authority
EP
European Patent Office
Prior art keywords
plate
slab
beams
panel
wood
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP07110417A
Other languages
German (de)
English (en)
Other versions
EP1867799A3 (fr
Inventor
Andrea Bonelli
Giuseppe Bonelli
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of EP1867799A2 publication Critical patent/EP1867799A2/fr
Publication of EP1867799A3 publication Critical patent/EP1867799A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00—Flooring
    • E04F15/02—Flooring or floor layers composed of a number of similar elements
    • E04F15/10—Flooring or floor layers composed of a number of similar elements of other materials, e.g. fibrous or chipped materials, organic plastics, magnesite tiles, hardboard, or with a top layer of other materials
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/02—Load-carrying floor structures formed substantially of prefabricated units
    • E04B5/04—Load-carrying floor structures formed substantially of prefabricated units with beams or slabs of concrete or other stone-like material, e.g. asbestos cement
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B5/00—Floors; Floor construction with regard to insulation; Connections specially adapted therefor
    • E04B5/02—Load-carrying floor structures formed substantially of prefabricated units
    • E04B5/12—Load-carrying floor structures formed substantially of prefabricated units with wooden beams
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04F—FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F2201/00—Joining sheets or plates or panels
    • E04F2201/05—Separate connectors or inserts, e.g. pegs, pins, keys or strips

Definitions

  • the present invention relates to a prefabricated panel for the manufacture of floors and roofs.
  • prefabricated panels comprising a plurality of wooden beams, defining respective lower panel beads, and an upper slab made of reinforced concrete, which is cast and made monolithic with the settling beams, so as to make the transport and the assembly of the prefabricated panel at the building sites where the laying is later carried out convenient.
  • a prefabricated panel for the manufacture of floors and roofs; the panel comprising:
  • numeral 1 indicates a prefabricated panel, which is drawn near to other panels 1 of a similar type for the manufacture of a floor or roof.
  • the panel 1 comprises an upper slab 4 comprising a plate 5 made of conglomerate, consisting of shredded wood (which is also designated “chipped” wood) which is bound with cement.
  • shredded wood which is also designated "chipped” wood
  • PLS registered trademark
  • a material displaying such features is known by the brand name of "PLS” (registered trademark).
  • PLS registered trademark
  • a mineralization process is cited by way of example: after having been shredded in small fibers displaying different size, the wood is desiccated at high temperature and mixed with mineral powders and other ecological products which make it inert.
  • Such a method is known, for instance, from European patent No. EP0517577 filed on June 2nd, 1992, which is here integrally recalled for the sake of completeness in description and for the required parts.
  • a dosage example is the following:
  • the kneading is obtained by dry mixing the loose wood with the cement, so as to properly distribute the two elements, to which the water is then gradually added.
  • the obtained kneading is immediately cast in appropriate moulds, such as to form the shape intended for the plate 5.
  • Water-, electric- and/or heating-system tubings may already be arranged in the moulds to directly embed such tubings in the casting.
  • the plate 5 is manufactured with a uniform thickness, with an extrados 6 (upper surface) and an intrados 7 (lower surface) which are flat.
  • the slab 4 comprises a painted boarding 8, consisting of wooden laths which are reciprocally arranged side by side and attached to the lower surface 7, for instance by means of screws or nails.
  • the panel 1 further comprises a plurality of wooden beams 10, which are arranged at sight under the slab 4, against the boarding 8, and are orthogonal to the laths of the boarding 8 itself.
  • the lower surface 7 is finish-free and is plastered after the panel 1 has been laid to form the floor or the roof: in this case, each wooden beam 10 is wrapped by a nylon film (not shown) to be protected during plastering. Such a film is then removed once the plaster has dried.
  • each beam 10 is preferably attached to the plate 5 by means of a plurality of screws 11, having respective threaded rods 12 which partially engage the beam 10 and partially engage the plate 5, whereas the heads 13 of the screws 11 are arranged along the upper surface 6, by means of the interposition of respective washers (not shown).
  • the beam 10 is arranged directly in contact against the lower surface 7, without the boarding 8.
  • a related washer 16 is interposed between the beam 10 and the lower surface 7: the two opposite faces 17 of the washer 16 are toothed or knurled to embed both into the beam 10 and into the plate 5, to increase the friction and the transmission of the stresses between the beam 10 and the slab 4.
  • the lower surface 7 has a different shape from a flat shape: for instance, it defines a plurality of elongated seats each of which partially houses a related beam 10.
  • the slab 4 has an edge 18 that does not have the beams 10 and an edge 19 that carries a beam 10a, which comprises a portion 20 which laterally protrudes with respect to the edge 19 itself: during the laying, the panel 1 is bound to another adjacent panel 1 (partially shown with a broken line), a side edge of which is overlapped and then attached to the portion 20 of the beam 10a by means of screws.
  • the use of PLS of the plate 5 allows to make the slab 4 lighter with respect to the prefabricated panels with a concrete slab: indeed, the plate 5 has a relatively low specific weight in the range between 800 and 1000 kg/m 3 .
  • the panel 1 also allows to avoid the increase in weight of old load-bearing walls during the restoration of buildings. Again because of its low specific weight, the panel 1 may also be manufactured displaying a greater size that the panels of the known art.
  • PLS is a very good thermal insulating and sound-absorbing material. Specifically, roofs and floors manufactured with the panels 1 have an insulating coefficient 8 times higher, with a specific weight 2 times lower, than a cement or concrete slab.
  • the panel 1 ensures operational rapidity, assembly ease, safety and stability of the structures, and a considerable saving as far as costs are concerned. Indeed, the panels 1 are manufactured at the factory, and are then carried to the building site for the laying step: in this manner, up to 90% of the time required for the laying may be saved as compared to products which are cast or assembled directly on the building site.
  • the transversal sections and the thickness of the weight-bearing element of the panel 1 may considerably be reduced.
  • the beams 10 and the slab 4 do not only rest on each other, but are attached, some of the stress is relieved on the linear weight-bearing beams 10, which in this case are manufactured of solid wood.
  • the attachment between beams 10 and slab 4 avoids reciprocal movements between the extrados of the wood and the intrados of the slab, so it leads the wood of the beams 10 and the PLS of the plate 5 to "cooperate", thus exploiting the properties of the two materials at best, that is inducing the wood to work in traction and the slab 4 in compression.
  • the combination or coupling between the two elements implies the individuation of a common neutral axis, which is displaced downwards for the PLS, and is displaced upwards for the wood, with respect to the case in which they are subjected to a simple flexion.
  • the extent by which the neutral axis is displaced, is a function of the geometry of the panel 1. In general, the traction flexing stresses are absorbed to a greater extent by the wooden beads 10, whereas the compression stresses are absorbed by the PLS plate 5.
  • the plate 5 When the plate 5 has an embedded framework therein, the latter may also be of the so-called "light” type, as the plate 5 is mostly stressed by compression.
  • prefabricated panels 1 displaying high resistance may be manufactured.
  • the panels 1 have optimal support features, they are light and may cover considerable openings, they have definitely limited thickness and are both sound-absorbing and sound-insulating, as well as having the desired finishing.
  • the PLS which is obtained by a wood mineralization process, is a totally ecological and biocompatible material, that contains no polluting chemical substance. It may be perfectly positioned in the most varied environments with total respect for the environment. It is easily recyclable and therefore does not affect the environmental balance.
  • PLS is produced from the recovery of wood discards.
  • every m 3 of wood there are stored 820 m 3 of carbon dioxide, which are absorbed by the growing plant; by preserving the wood in its natural state, PLS avoids the return of the carbon dioxide contained therein to the environment, thus making a contribution to minimize the environmental impact of the wood discards.
  • PLS ensures a long duration in time of the panel 1: indeed, it does not deform in the presence of water, it does not suffer from freezing, it has a very good resistance to compression and does not require any maintenance during time.
  • PLS In virtue of its resistance to compression and its resistance to fire, PLS results being particularly suitable for the construction of structures that must ensure safety, energy saving and high living comfort.
  • PLS has a very good holding to nails (comparable to that of wood) and may be machined or sawed as if it were wood.
  • the panel 1 may have a different shape than that shown and possible intermediate openings. Furthermore, a water-resistant sheathing could be interposed between the boarding 8 and the plate 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Panels For Use In Building Construction (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
  • Building Environments (AREA)
EP07110417A 2006-06-16 2007-06-15 Panneau préfabriqué pour la fabrication de sols et toits Withdrawn EP1867799A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ITTO20060091 ITTO20060091U1 (it) 2006-06-16 2006-06-16 Pannello prefabbricato per la realizzazione di solai e tetti

Publications (2)

Publication Number Publication Date
EP1867799A2 true EP1867799A2 (fr) 2007-12-19
EP1867799A3 EP1867799A3 (fr) 2010-01-06

Family

ID=38511190

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07110417A Withdrawn EP1867799A3 (fr) 2006-06-16 2007-06-15 Panneau préfabriqué pour la fabrication de sols et toits

Country Status (2)

Country Link
EP (1) EP1867799A3 (fr)
IT (1) ITTO20060091U1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2103752A1 (fr) * 2008-03-20 2009-09-23 Fensterfabrik Albisrieden Ag Couverture
AU2020281139B2 (en) * 2019-08-13 2021-03-25 LWC Research Pty Ltd Prefabricated floor panel, construction and method therefor
CN113152759A (zh) * 2021-04-26 2021-07-23 中国林业科学研究院木材工业研究所 一种装配式预应力增强正交胶合木楼板

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2722226A1 (fr) * 1994-07-05 1996-01-12 Bueno Oscar Procedes industrialises par panneaux bois a double platekage formant parquets ou planchers de constructions
WO1999022095A1 (fr) * 1997-10-28 1999-05-06 Carter Holt Harvey Limited Panneaux de plancher et/ou installation desdits panneaux et/ou procedes les concernant
GB2420355A (en) * 2004-11-20 2006-05-24 Rowan Timber Supplies Joist with adhered acoustic insulating material

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2722226A1 (fr) * 1994-07-05 1996-01-12 Bueno Oscar Procedes industrialises par panneaux bois a double platekage formant parquets ou planchers de constructions
WO1999022095A1 (fr) * 1997-10-28 1999-05-06 Carter Holt Harvey Limited Panneaux de plancher et/ou installation desdits panneaux et/ou procedes les concernant
GB2420355A (en) * 2004-11-20 2006-05-24 Rowan Timber Supplies Joist with adhered acoustic insulating material

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2103752A1 (fr) * 2008-03-20 2009-09-23 Fensterfabrik Albisrieden Ag Couverture
WO2009115286A1 (fr) * 2008-03-20 2009-09-24 Fensterfabrik Albisrieden Ag Dalle
AU2020281139B2 (en) * 2019-08-13 2021-03-25 LWC Research Pty Ltd Prefabricated floor panel, construction and method therefor
CN113152759A (zh) * 2021-04-26 2021-07-23 中国林业科学研究院木材工业研究所 一种装配式预应力增强正交胶合木楼板

Also Published As

Publication number Publication date
EP1867799A3 (fr) 2010-01-06
ITTO20060091U1 (it) 2007-12-17

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