EP2067910A1 - Vorrichtung und Verfahren zum Erzeugen einer Aussparung in der Betonplatte - Google Patents

Vorrichtung und Verfahren zum Erzeugen einer Aussparung in der Betonplatte Download PDF

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Publication number
EP2067910A1
EP2067910A1 EP08358015A EP08358015A EP2067910A1 EP 2067910 A1 EP2067910 A1 EP 2067910A1 EP 08358015 A EP08358015 A EP 08358015A EP 08358015 A EP08358015 A EP 08358015A EP 2067910 A1 EP2067910 A1 EP 2067910A1
Authority
EP
European Patent Office
Prior art keywords
box
reservation
forming
concrete slab
slab
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Withdrawn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
EP08358015A
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English (en)
French (fr)
Inventor
Laurent Gotman
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.)
Scorev-Societe De Conception De Realisation Et De Vente
Original Assignee
Scorev-Societe De Conception De Realisation Et De Vente
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 Scorev-Societe De Conception De Realisation Et De Vente filed Critical Scorev-Societe De Conception De Realisation Et De Vente
Publication of EP2067910A1 publication Critical patent/EP2067910A1/de
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G15/00—Forms or shutterings for making openings, cavities, slits, or channels
    • E04G15/06—Forms or shutterings for making openings, cavities, slits, or channels for cavities or channels in walls of floors, e.g. for making chimneys
    • E04G15/061—Non-reusable forms

Definitions

  • the present invention relates to a device for forming reservations made in concrete floors during the construction of buildings.
  • the invention relates to a device for creating a reservation or hopper, that is to say a recess reserved in anticipation of the subsequent passage of one or more vertical technical sleeves, during the casting of a concrete floor one floor, during the construction phase of a building.
  • This device constitutes a lost formwork, that is to say a formwork element, intended to remain in place after pouring concrete.
  • the invention also relates to a method for forming a reservation in a concrete slab.
  • a known method of making reservations in a floor of a building floor consists, after pouring a concrete slab over the entire floor surface, to make measurements on said slab allowing locate the desired locations of reservations and then create the said reservations using a jackhammer.
  • the realization of a hopper, according to such a method has the disadvantage of being long and difficult.
  • the hoppers being made vis-à-vis and superimposed on several floors, the latter also pose a risk to the safety of people during construction work.
  • the concrete slabs, thus prepared for the passage of the ducts offer no sealing at the level of reservations before the phase of implantation of said ducts.
  • a known device for the realization of reservations is constituted by a welded wire mesh set up before pouring the floor, using a box system and cons box. Pitches for the passage of the duct or ducts are created by cutting the welded mesh. After installation of the duct or ducts, plywood plates are positioned around said duct or ducts, and concrete is then poured to close the reservation.
  • the use of this device improves the safety of people during the work, but it remains random while the device offers no temporary sealing of the slab before implantation of the ducts.
  • the implementation and closure of the reservation require significant implementation efforts and duration of intervention.
  • the document FR-2,712,330 describes an armed resin formwork plate, put in place before the pouring of the reinforced concrete floors and used as a reservation to create a hopper for the passage of the pipes.
  • This plate thin, remains permanently implanted in the location of the future technical duct after pouring the floor.
  • On this plate are previously welded with resin, and around orifices in the latter, sheaths, that is to say, tubular sleeves for the introduction of cables and / or pipes.
  • This formwork device has the disadvantage of having to be custom made to allow the arrangement and fixing of the sleeves, according to a predefined design of ducts.
  • Said passage means being defined, for each sleeve, by a perforable region arranged in the side wall to have a lower breaking strength than the rest of the side wall.
  • This reservation box is limited to the passage of horizontal ducts (pipes).
  • the invention overcomes the aforementioned drawbacks by providing a formwork device and a method for forming a reservation in a concrete slab or floor.
  • the formwork device is of the type comprising a quadrangular box consisting of four sides assembled together, and a bottom disposed at a distance from the upper opening of said box, said device being notably remarkable in that said bottom is constituted by a waterproof composite panel, resistant to punching, adapted to be easily cut with the aid of a hand tool and having the ability to withstand a heavy load, said device further comprising a removable cover for closing said box, before pouring of the slab.
  • At least one of the faces or sides of the box is inclined, from top to bottom towards the interior of the latter.
  • the invention also proposes a method for overcoming the problems of producing hoppers mentioned above.
  • the method for forming a reservation in a concrete slab is remarkable in that, by means of a lost formwork, on the one hand, in the first place, a hopper of which at least a portion of the edge has a slope downwardly inclined towards the reservation and, on the other hand, thereafter, by pouring concrete into said lost formwork, a plug of which at least a portion of the edge has an inclined slope from bottom to top in the direction of outside.
  • the bottom of the box is disposed in overflow of the lower part thereof.
  • the bottom of the box comprises a plate made of a material that can be easily cut with the aid of a hand tool, such as, for example, reinforced plastic, preferably extruded polystyrene. armed, or cork.
  • a hand tool such as, for example, reinforced plastic, preferably extruded polystyrene. armed, or cork.
  • the bottom of the box comprises a protective film made of a sealing material resistant to punching, able to be easily cut with the aid of a hand tool and having an ability to withstand a heavy load, this protective film covers the entire at least the lower face of the plate, and preferably the lower and upper faces of said plate.
  • the protective film is made of fiberglass, or carbon fiber, or polyester fiber.
  • a lower floor consisting of a lower frame, is assembled to the faces of the box, a space or slot in which are engaged the edges of the bottom of the latter being formed between said lower frame and the sides of said box.
  • two opposite sides of the box are inclined towards the bottom thereof.
  • hopper and "reservation” designate empty spaces reserved in a concrete floor or slab to establish ducts for the passage of ducts and / or various cables.
  • formwork refers to a device prepared for casting cast concrete or other similar material.
  • the formwork is described as “lost” when it is intended to remain in place after pouring concrete.
  • the device 1 comprises a box 2, of quadrangular shape (for example rectangular or square), consisting of four sides 2a, 2b, 2c, 2d assembled together, a bottom 3 disposed at a distance from the upper opening 0, that is to say at a distance from the upper edge of said sides, and a removable cover 4.
  • a box 2 of quadrangular shape (for example rectangular or square), consisting of four sides 2a, 2b, 2c, 2d assembled together, a bottom 3 disposed at a distance from the upper opening 0, that is to say at a distance from the upper edge of said sides, and a removable cover 4.
  • the box 2 comprises at least one face or side 2a, positioned with an inclination, from top to bottom, with respect to the vertical plane and towards the inside of said box, preferably with an angle of the order of 75 °.
  • the box may also have two opposite sides 2a, 2c, or all of its four sides 2a, 2b, 2c, 2d, inclined inward, identically or not.
  • the box 2 is made to the dimensions of the desired hopper, and preferably made of water-repellent chipboard and assembled, in a manner known per se, using staples or otherwise.
  • the bottom 3 of the box 2 extends laterally over the lower part of the side wall 2a-2b-2c-2d of said box which thus has, at its base, a peripheral belt overflowing with 3d anchorage.
  • the bottom 3 is constituted by a sealed composite panel, resistant to punching, capable of being cut with the aid of a hand tool, such as a cutter, and capable of supporting a heavy load, for example, the weight of a person.
  • the composite panel constituting the bottom 3, comprises a plate 3a, which can be made of a light material, relatively soft, such as, for example, extruded polystyrene or cork.
  • This plate 3a may have a small thickness, of the order of a few centimeters, for example of the order of +/- 2 cm.
  • a protective film 3b sealed, resistant to punching, able to be easily cut using a sharp hand tool (eg a cutter or the like) and having an ability to withstand a heavy load, generally greater than the weight of an operator.
  • a protective film 3c having identical characteristics to the protective film 3b completely covers the upper surface of the plate 3a.
  • the protective film 3b and / or 3c provides (s) water resistance and punching, as well as an ability to support the weight of an operator, without yielding.
  • Said film 3b and / or the film 3c may be made of, for example, glass fibers or carbon fibers or polyester fibers or any other similar material made by suitable and known weaving methods. in itself, for providing said panel the strength characteristics described. Said film 3b and / or the film 3c is / are applied to the plate 3a by suitable bonding techniques known per se.
  • Said film 3b and / or the film 3c may have a thickness of +/- 1 mm.
  • the bottom 3 can be assembled to the box 2 by any method known per se. However, a particular and advantageous assembly device is described below.
  • the device also comprises a lower frame 7 disposed under the bottom 3.
  • This frame is constituted by the assembly of four sides 7a, 7b, 7c, 7d.
  • the sides 7b, 7c, 7d of this frame are placed in the alignment of the sides 2b, 2c, 2d of the box, when the latter are arranged vertically, that is to say perpendicular to the bottom 3.
  • the sides 7b, 7c, 7d have a reduced height relative to the sides 2b, 2c, 2d of the box.
  • the lower frame is assembled at the sides of the box with a space allowing the passage of the overflowing 3d edge of the panel 3.
  • the lower frame 7 is assembled to the box 2 by means of vertical blocks 8 fixed, externally, to the vertical sides of said frame 7 and said box 2, allowing to provide a space or horizontal slot 9 between them.
  • the bottom 3 is housed in the slot 9 and held laterally by the shims 8 assuring the assembly.
  • a glue bead can be added at the bottom 3 and around the box 2, to improve the mechanical strength of said bottom.
  • the cover 4 of the device is constituted by a quadrangular panel, of shape and dimensions slightly greater than those of the box 2, exceeding for example of the order of a few centimeters with respect to said box and on each side thereof.
  • the box 2, the cover 4 and the lower frame 7 can be made of an identical material, preferably water-repellent chipboard.
  • the device according to the invention comprises at least one duct 10 intended to be fixed on the bottom 3 after casting of the slab and cutting said bottom, and before casting the closure cap B1 of the hopper.
  • the method for forming a reservation in a concrete slab is remarkable in that it achieves by means of a lost formwork, on the one hand a hopper at least a portion of the edge has an inclined slope from top to bottom in the direction of the reservation and, on the other hand, a plug with at least a portion of the edge, has a slope inclined upwardly in the direction of the outside, so that in case of disappearance of the lost formwork, for example by following a fire, the cap remains in place in the hopper.
  • the inclination of one of the faces 2a of the box 2 avoids the fall of the plug B1 of the concrete surrounding the ducts, for example during a fire. Indeed, the constituent materials of the device are flammable. In case of fire, the device disappears, and the concrete block poured into said device and retained by the latter would drop if the walls of said device were all vertical.
  • the inclination of one of the faces of the device provides a concrete block within said device, serving as "plug" remaining in place in the hopper in case of fire.
  • the inclination of one of the faces of the box with an angle of 75 ° with respect to the vertical plane and towards the inside of said box makes it possible to ensure an overlap of the plug on the support slab on a concrete thickness at least 75 mm and thus maintain a firewall at the hopper.
  • the device is first positioned on the formwork surface S of the concrete slab ( Figure 6A ) at the desired location, the box 2-3-7 being closed by its cover (4).
  • the floor or concrete slab B is poured whose thickness is substantially equal to that of the total height of the box 2-3-4-7 ( Figure 6B ) which has been made according to the expected thickness of said slab, so that the surface thereof is in alignment with the surface of the lid 4.
  • the form box 2-3-4-7 is thus anchored by means of its raised lateral parts (bottom edges 3 and shims 8) in the edges of the reservation or hopper T obtained.
  • one or more holes TR are made in the bottom 3 of the formwork box at the desired location (s) ( Figure 6C ), which may be predetermined, for the establishment of the ducts for the passage of ducts, the cover 4 being previously removed.
  • the cutting of the TR hole or holes can be performed using hand tools with motorized drive or manually operated, for example by means of professional cutters.
  • the vertical duct or ducts 10 are then put in place, for example by engagement and gluing of the lower portion thereof in the one or more holes TR ( Figure 6D ).

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
EP08358015A 2007-12-03 2008-12-01 Vorrichtung und Verfahren zum Erzeugen einer Aussparung in der Betonplatte Withdrawn EP2067910A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0708425A FR2924456A1 (fr) 2007-12-03 2007-12-03 Dispositif et procede pour former une reservation dans une dalle de beton

Publications (1)

Publication Number Publication Date
EP2067910A1 true EP2067910A1 (de) 2009-06-10

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EP08358015A Withdrawn EP2067910A1 (de) 2007-12-03 2008-12-01 Vorrichtung und Verfahren zum Erzeugen einer Aussparung in der Betonplatte

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EP (1) EP2067910A1 (de)
FR (1) FR2924456A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3057004A1 (fr) * 2016-10-05 2018-04-06 Siib Boite de reservation autobloquante et son procede d'utilisation
FR3118471A1 (fr) * 2020-12-29 2022-07-01 Ain Corporation Embase de montage pour une boîte de réservation et procédé de fabrication d’une prédalle incorporant cette embase

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2712330A1 (fr) 1993-11-10 1995-05-19 Destouches Michel Plaque de coffrage perdue destinée aux réservations dans les planchers des canalisations tous fluides.
EP0972985A2 (de) * 1998-07-17 2000-01-19 ERCO Leuchten GmbH Leuchtengehäuse für den Einbau in ein Betonbauteil, insbesondere in eine Betondecke
FR2789711A1 (fr) 1999-02-12 2000-08-18 David Genevois Boite de reservation pour l'incorporation de canalisations dans une dalle de beton et son procede de mise en oeuvre
WO2005012421A1 (de) * 2003-07-31 2005-02-10 Alonid Aktiengesellschaft Biologisch abbaubare hilfsmittel für den betonbau, ein verfahren zu deren herstellung und deren verwendung
US20050055916A1 (en) * 2003-08-11 2005-03-17 Daigger Daniel J. Rough in box for use in protecting a plumbing drain during pouring of concrete

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2712330A1 (fr) 1993-11-10 1995-05-19 Destouches Michel Plaque de coffrage perdue destinée aux réservations dans les planchers des canalisations tous fluides.
EP0972985A2 (de) * 1998-07-17 2000-01-19 ERCO Leuchten GmbH Leuchtengehäuse für den Einbau in ein Betonbauteil, insbesondere in eine Betondecke
FR2789711A1 (fr) 1999-02-12 2000-08-18 David Genevois Boite de reservation pour l'incorporation de canalisations dans une dalle de beton et son procede de mise en oeuvre
WO2005012421A1 (de) * 2003-07-31 2005-02-10 Alonid Aktiengesellschaft Biologisch abbaubare hilfsmittel für den betonbau, ein verfahren zu deren herstellung und deren verwendung
US20050055916A1 (en) * 2003-08-11 2005-03-17 Daigger Daniel J. Rough in box for use in protecting a plumbing drain during pouring of concrete

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3057004A1 (fr) * 2016-10-05 2018-04-06 Siib Boite de reservation autobloquante et son procede d'utilisation
EP3306012A1 (de) 2016-10-05 2018-04-11 SIIB France Selbstblockierender verteilerkasten, und sein verwendungsverfahren
FR3118471A1 (fr) * 2020-12-29 2022-07-01 Ain Corporation Embase de montage pour une boîte de réservation et procédé de fabrication d’une prédalle incorporant cette embase

Also Published As

Publication number Publication date
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