EP0568441A1 - Tragstruktur wie zum Beispiel eine Decke, mit Trägern und einer Betonplatte und Verfahren zu ihrer Herstellung - Google Patents

Tragstruktur wie zum Beispiel eine Decke, mit Trägern und einer Betonplatte und Verfahren zu ihrer Herstellung Download PDF

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Publication number
EP0568441A1
EP0568441A1 EP93401088A EP93401088A EP0568441A1 EP 0568441 A1 EP0568441 A1 EP 0568441A1 EP 93401088 A EP93401088 A EP 93401088A EP 93401088 A EP93401088 A EP 93401088A EP 0568441 A1 EP0568441 A1 EP 0568441A1
Authority
EP
European Patent Office
Prior art keywords
concrete
beams
recess
recesses
structure according
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Withdrawn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
EP93401088A
Other languages
English (en)
French (fr)
Inventor
Claude Marcel René Henri Blouet
Marcel Blouet
René Blouet
Henri Blouet
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.)
BLOUET, CLAUDE MARCEL RENE HENRI
BLOUET, HENRI
BLOUET, MARCEL
BLOUET, RENE
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 EP0568441A1 publication Critical patent/EP0568441A1/de
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/17—Floor structures partly formed in situ
    • E04B5/23—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated
    • E04B5/26—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated with filling members between the beams
    • E04B5/261—Monolithic filling members
    • E04B5/263—Monolithic filling members with a flat lower surface
    • 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
    • E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/17—Floor structures partly formed in situ
    • E04B5/23—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated
    • 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
    • E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/17—Floor structures partly formed in situ
    • E04B5/23—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated
    • E04B2005/232—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated with special provisions for connecting wooden stiffening ribs or other wooden beam-like formations to the concrete slab
    • E04B2005/235—Wooden stiffening ribs or other wooden beam-like formations having a special form
    • 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
    • E04B5/16—Load-carrying floor structures wholly or partly cast or similarly formed in situ
    • E04B5/17—Floor structures partly formed in situ
    • E04B5/23—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated
    • E04B2005/232—Floor structures partly formed in situ with stiffening ribs or other beam-like formations wholly or partly prefabricated with special provisions for connecting wooden stiffening ribs or other wooden beam-like formations to the concrete slab
    • E04B2005/237—Separate connecting elements

Definitions

  • the present invention relates to a supporting structure comprising beams and a concrete slab which cooperate to form an inseparable and particularly resistant structure.
  • wood / concrete connecting elements are generally used, part of which is inserted into a beam and another part is embedded in the concrete.
  • the purpose of these connecting elements is to avoid relative displacements between the various constituents of the structure (wood, formwork, concrete, etc.) especially in the longitudinal direction of the beams.
  • document FR-A-2 611 778 describes a floor comprising beams in which circular grooves are made intended to receive cylindrical connectors made of very resistant metal, arranged at given distances from one another. Then placed on these beams, a formwork provided with holes to allow the connectors projecting from the beams, the cross section of the holes being greater than the diameter of the connectors.
  • This formwork is, finally, covered with a reinforced concrete slab, this penetrating the entire volume of the holes, that is to say in the connectors and around them and this, in a homogeneous manner taking into account of the shape chosen for said connectors.
  • This type of floor makes it possible to avoid the relative movements of the different layers thus formed, in the longitudinal direction of the beams.
  • the document FR-A-2 510 163 describes a process which consists on the one hand, of partially introducing reinforcements in the upper face of each beam and on the other hand, of making holes blind in the same face.
  • Each beam is surmounted by an auxiliary beam formed of resin concrete, this resin concrete partially submerging the reinforcements and filling the blind holes. It is also used to hold joists above the beams.
  • the patent FR-A-2,229,4908 for its part, describes a floor composed of interjoists placed on beams made of any material but preferably (only) of wood and arranged vertically and joined together from place to place by crosspieces of wire d 'steel.
  • the interjoists are covered with concrete which is reinforced by irons connected to the sleepers.
  • This floor receives ceiling elements located under the beams in order to conceal them completely.
  • the objective of the invention is to provide a support structure such that it makes it possible to avoid relative movements in the longitudinal direction of the beams but also in a direction transverse thereto.
  • the invention relates to a floor having visible lower beams and concealing the other resistant parts, the ceiling being located not under the beams but above.
  • the invention also aims to provide a particularly resistant structure forming an inseparable whole.
  • the subject of the invention is a supporting structure such as a floor, of the type comprising beams spaced apart from each other in a substantially parallel manner and associated with a concrete slab, characterized in that at least some of said beams are in one piece and have a central longitudinal recess defining, on the upper face of the beam, two bearing surfaces intended for shuttering elements extending from one beam to another, at their upper part, and constitute ceiling elements located above the beams and in that said beams are integral with a concrete slab which extends over the formwork elements and in the longitudinal recesses in order to form an inseparable assembly, these recesses comprising means concrete attachment.
  • a supporting structure comprising a beam associated with a concrete slab as shown in Figures 8 to 10
  • the beams used to form the beam, or at least some of them, are of type illustrated in Figures 1 to 7.
  • a beam 10 according to the invention. It has a continuous central longitudinal recess 11 opening to the outside and intended to be filled with concrete.
  • This recess is generally practiced in new beams, to create a beam, but it is also possible to make a longitudinal recess in a pre-existing beam on site, if possible, or after disassembly, as the case may be.
  • the longitudinal recess 11 opening to the outside can take various forms as long as it is suitable for forming an inseparable assembly with the concrete, after it has been poured.
  • the longitudinal recess 11 has a constriction 11a using the hooking means 72-72 concrete is to avoid a possible detachment in a direction perpendicular to the longitudinal direction of the beam, according to arrow F1.
  • attachment means such as, for example, square-shaped parts planted in the bottom of the recess and one branch of the square of which is substantially parallel to the longitudinal direction of beam.
  • the longitudinal recess 11 defines on the same face 10a of the beam 10 two bearing surfaces 16 and 18, the width l was determined so that they can serve as support for the formwork elements 70 as described below.
  • Figure 2 shows another form of recess that can be practiced in beams for the production of a supporting structure according to the invention.
  • a recess 22 is formed in a beam 20 by first making two cuts along lines 22 a and 22 b . Then, after having removed the cut falls 21, 23 and 25, the lower part 22 c of the recess is produced using, for example, a cutter introduced by the opening resulting from the first cuts 22 a and B.
  • this lower part 22 c are chosen so as to form a constriction 24 intended to ensure satisfactory attachment of the concrete 72-72 a , thus making it possible to avoid separation in the direction of the arrow F2.
  • the recess 22 defines on the face 20 a of the beam, two bearing surfaces 26 and 28 intended to receive shuttering elements 70, as explained below.
  • the choice of the shape of the recess 22 is advantageous in the sense that it makes it possible to recover the cut scrap 21, 23 and 25 and to use these pieces of wood for other purposes.
  • means are provided on the beams constituting the beam, for preventing relative movements of the concrete with respect to said beams in the longitudinal direction of these beams.
  • blind holes or notches 30 are made in the bottom of the longitudinal recess 11, as shown in FIG. 3. These notches 30 are made at predetermined distances from one another and they are advantageously closer together in places where the largest arrow is expected. Consequently, when the concrete 72-72 a is poured, it enters the recess 11 and the notches 30. This structure makes it possible to avoid sliding movements of the concrete 72-72 a on the beam 10 , according to arrows F3 and F4.
  • wood / concrete "anti-slip" means can consist of metal parts with irregular surfaces favorable to the attachment of concrete.
  • Figure 4 shows an example. Is placed in the recess 11, steel blades 32 having projecting inclined teeth 34. However, other parts can be used such as serrated metal rings known per se.
  • FIG. 5 illustrates an alternative embodiment according to which, after having made a longitudinal recess 11 in a beam 10 as explained above, two rows of notches 36 are practically parallel and in the longitudinal direction of the beam 10. Then, in 'recess 11 a metal frame 38 formed by pins 40 connected by a longitudinal rod 44.
  • the notches 36 essentially serve to retain a layer of resin 46 introduced into the recess 11 to maintain the pins 40 in the vertical position , especially when pouring concrete which will be reinforced.
  • Figures 6 and 7 illustrate other examples of intermediate connecting elements.
  • a double recess 52 is formed in a beam 50 having throttles 54, by making two lines of cross saws, in a manner analogous to cuts 22 a and 22 b of FIG. 2, but this times, keeping the central part 52 a .
  • the recess 52 defines two bearing surfaces 56 and 58 on the face 50 a of the beam 50.
  • the intermediate elements consist, in this case, of metal parts 60 in the form of plates and these plates are pressed both into the bottom 52 a of the recess 52 and into one of its side walls 52 b or 52 c .
  • two successive parts 60 are advantageously fixed in different side walls of the recess 52.
  • the parts 60 extend beyond the bearing surfaces 56-58 over a height h .
  • the lower parts 60 is embedded in the concrete 72 fills the recess 52 (as in the case of the aforementioned connecting intermediate members) and the projecting portion is embedded in the slab 72 has on itself the height h .
  • the height h is preferably chosen so that the part 60 does not pass right through the concrete slab 72 a .
  • FIGS. 6 and 7. Another type of intermediate connecting element is also shown diagrammatically in FIGS. 6 and 7. It is a tube 62 having teeth 64 at one of its ends. In this case, a notch is made in the bottom 52 a of the recess and the teeth 64 of a tube 62 are inserted therein. In addition, as for the parts 60, provision is made for the tube 62 to extend beyond bearing surfaces 56 and 58 over a height h '. When pouring the concrete 72-72 a , it enters the recess 52 but also inside the tubes 62 and the height h 'of these tubes is embedded in the concrete slab 72 a itself .
  • the parts introduced into the recess 11 may, depending on the choice of their shape, serve both as means for attaching the concrete to avoid separation in a direction perpendicular to the longitudinal direction of the beams and to avoid relative sliding movements of the concrete on the wood in the longitudinal direction of the beams.
  • the beams thus prepared are then used to form a load-bearing structure according to the invention.
  • FIG. 8 illustrates the process for obtaining a support structure with beams of the type of FIG. 1 and 3 and shows the positioning of its various constituents.
  • the desired number of beams 10 is placed at a defined distance from each other and in a substantially parallel manner, to constitute a beam.
  • FIGS. 8 and 9 only two beams 10 have been shown entirely so as not to unnecessarily overheat the drawing.
  • the intermediate connecting elements corrugated blades 32-34, pins 40, plates 60, serrated tubes 62, etc.
  • Only notches 30 have been shown in the sectional beam, to clearly show the penetration of the concrete into the structure.
  • formwork elements 70 which each extend from one beam to another, without obstructing the opening of the recesses 11. If we consider two adjacent beams 10, we see that the longitudinal edges 70 a and 70 b of a formwork element 70 rest on two bearing surfaces 16 and 18 facing each other and belonging respectively to two adjacent beams.
  • the invention allows the use of formwork elements having an external surface 70 c having the surface finish and / or the desired aesthetics. In this case, it is not necessary to provide for the application of a special coating between the beams (in particular plaster) as is generally the case with the structures produced so far.
  • the last step of the process consists in pouring a concrete slab 72-72 a on the beams and the formwork elements 70.
  • the concrete 72 fills the recesses 11 as well as the holes 30 possible.
  • intermediate connecting elements are also present in the recesses 11, such as those illustrated in Figures 4, 5 and 6 for example, these are embedded in the concrete 72 and possibly in the slab 72 has prorpement said if they extend beyond the bearing surfaces 16-18.
  • reinforced concrete can be obtained by placing the metal frame 38-40-44 in the recesses 11, a frame which is embedded in the concrete 72-72 a when it is poured.
  • FIG. 10 illustrates an alternative embodiment according to which only certain beams are hollowed out, for example in the case of the reuse of beams already existing and which cannot be deposited in particular for reasons of fragility.
  • a preexisting beam 74 is left "as is” and beams 10 hollowed out as indicated above are placed on either side to form a complete beam.
  • this beaming formwork elements 70 whose longitudinal edges 70 a and 70 b rest respectively on two bearing surfaces 16 and 18 belonging to two separate beams 10.
  • the shuttering element 70 At the location of the beam 74 which is not hollowed out, provision is made for the shuttering element 70 to rest entirely on one of its faces 74 a .
  • the formwork elements would all be of the same width, the latter corresponding to the distance separating two successive beams, there is then simply a discontinuity in the formwork element 70 at the level of the beam 74 on its face 74 a .
  • the concrete slab is then poured as indicated above and the concrete 72 enters the recesses 11 since these are not obstructed by the formwork elements 70.
  • FIG. 11 an embodiment can be seen according to which staples 80 are provided inserted by their ends in the bearing surfaces 16 and 18 and forming bridges above the recess 11.
  • These staples 80 consolidate the beam 10 because they oppose the spacing of the edges of the bearing surfaces 16 and 18 which could occur by deformation of the wood. Indeed the "C" shape lying of the hollowed beam gives it a tendency to open.
  • a more or less large number of staples 80 is placed so that these are more or less numerous and more or less close.
  • the pins 94 have a shape and dimensions such that they ensure, by contact with the sides of the recess 11, the correct positioning of the armature so that after the beams 10 and the armatures 90 have been put in place, can pour concrete without additional fixing operations.
  • FIGS. 13 and 14 show the embodiment which combines the advantages described with reference to FIGS. 11 and 12, because the beam 10 receives staples 80 in addition to the frame 90.
  • these staples have the advantage of preventing the armature 90 from separating from the beam: the iron 91 is located under the staples 80 and prevents the removal of the frame 80 from the top of the recess 11; the pins 94 located next to the staples 80 oppose the withdrawal of the frame 80 longitudinally relative to the recess 11.
  • the beam 10, the frame 90 and the staples 80 constitute an inseparable assembly which can be sold as is, for example by being packaged in a package such as a strong plastic sheet.
  • FIG. 15 shows an embodiment according to which the recess 11 of the beam 10 is obtained by three milling operations which create three slots 12, 13 and 14 oriented radially with respect to a virtual center close to the center of the beam, slots which complete the recess 11 and create a constriction 11 a .
  • the depth of the slots 12, 13 and 14 is chosen so that the bottoms of these slots are placed according to the same ring A of wood, this ring having been highlighted among the others by a mixed line.
  • a beam 10 whose section is rectangular. It is hollowed out by making three longitudinal holes, the full circular contours of which are indicated in dotted lines. The three holes are intersecting and determine a central oblong recess 10 b which leaves substantially constant thicknesses of wood, 10 c , 10 d , 10 e and 10 f .
  • a beam 10 pierced in this way is lightened without losing its strength and has, after drying, no crack or crack.
  • the beam 10 is as shown in Figure 18, that is to say that the central recess 11 does not open to the outside.
  • the thickness of wood which surrounds the central recess 11 is practically constant because the difference between the thickness E1 considered on the sides and that E2 considered in the corners is small and, in any case, less than that results from the circular recess in FIGS. 1 to 5 and 8 to 14.
  • the substantially quadrangular shape of the recess 11 makes it possible to place a reinforcement 90 therein composed of horizontal bars 95 joined by welded pins 96, of a type known per se, which makes it possible to properly reinforce the concrete which is to be poured in the recess 11 and in the passage 11 a , as well as above the beams 10, as described with reference to FIGS. 8 to 10.
  • the load-bearing structure according to the invention has very good resistance, and it is the beams 10-20-50 and the concrete slab 72-72 a which together contribute to this increased resistance.
  • a relatively thin concrete slab 72 a can be provided because, thanks to the presence of the recesses 11, a ribbed concrete slab, known to be much more resistant than a flat slab, is finally obtained. the ribbing resulting from the filling of the recesses with concrete.
  • the invention has the advantage of allowing the application, to the realization of the structure, of all the technicality of the concrete, such as for example the use of prestressing.
  • the beams 10-20-50-74 constituting the beam are maintained at each of their ends. But, on certain sites, it may happen that only the concrete slab 72 has support on supports, the beams 10-20-50 then being used only for decoration.
  • the invention makes it possible to obtain the desired aesthetic finish by the actual construction of the structure.
  • the invention is particularly applicable to the production of storey floors.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • Rod-Shaped Construction Members (AREA)
EP93401088A 1992-04-28 1993-04-27 Tragstruktur wie zum Beispiel eine Decke, mit Trägern und einer Betonplatte und Verfahren zu ihrer Herstellung Withdrawn EP0568441A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9205229A FR2692924B1 (fr) 1992-04-28 1992-04-28 Structure porteuse telle qu'un plancher, comprenant des poutres et une dalle de beton et procede pour son obtention.
FR9205229 1992-04-28

Publications (1)

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EP0568441A1 true EP0568441A1 (de) 1993-11-03

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EP93401088A Withdrawn EP0568441A1 (de) 1992-04-28 1993-04-27 Tragstruktur wie zum Beispiel eine Decke, mit Trägern und einer Betonplatte und Verfahren zu ihrer Herstellung

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EP (1) EP0568441A1 (de)
CA (1) CA2094995A1 (de)
FR (1) FR2692924B1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5640218A (en) * 1994-12-06 1997-06-17 Kanda Optical Co., Ltd. Foldable spectacles with temple members having deformable earpieces for fitting into compact case
FR2824093A1 (fr) * 2001-04-27 2002-10-31 Claude Marcel Rene Henr Blouet Structure coffrante telle que des poutres de bois et une structure metallique porteuse servant de support a une dalle de beton a faible compression et procede pour son obtention
FR2876718A1 (fr) * 2004-10-19 2006-04-21 Claude Blouet Coffrage bois d'armature de poutre de plancher beton
EP3128244A1 (de) 2015-08-03 2017-02-08 ERNE AG Holzbau Aktivierbares beton-verbundelement
EP3591130A1 (de) * 2018-07-04 2020-01-08 Klasch Spezial- Bauartikel GmbH Deckenkonstruktion
FR3131339A1 (fr) * 2021-12-24 2023-06-30 Ingenova Ouvrage de construction de type plancher composite

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2760478A1 (fr) * 1997-03-06 1998-09-11 Francois Aubert Element de construction de type poutre
FR2774112B1 (fr) 1998-01-27 2000-03-17 Archipente Element de paroi composite bois-beton
EP3201405B1 (de) * 2014-09-30 2023-02-08 Université Laval Aufgebautes system, verbinder dafür und verfahren zur herstellung davon
RU180141U1 (ru) * 2017-04-26 2018-06-05 Федеральное государственное бюджетное образовательное учреждение высшего образования "Казанский государственный архитектурно-строительный университет" (КГАСУ) Деревобетонное перекрытие
RU2728055C2 (ru) * 2018-05-15 2020-07-28 Федеральное государственное бюджетное образовательное учреждение высшего образования "Казанский государственный архитектурно-строительный университет" (КазГАСУ) Деревобетонное самонапряженное перекрытие

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH223498A (de) * 1941-06-11 1942-09-30 Piccolin Stefano Tragkonstruktion.
FR987101A (fr) * 1949-03-30 1951-08-09 Système de plancher réalisable sans étais et sans coffrage
FR1004452A (fr) * 1947-04-24 1952-03-31 Procédé pour la construction de plafonnages et de plafonds à nervures en béton armé, ainsi que de nervures de coffrage en béton armé
CH301714A (de) * 1951-10-04 1954-09-30 Bocion Adolf Rippendecke.
FR2166335A1 (en) * 1972-01-05 1973-08-17 Sattanino Jean Pierre Prefabricated flooring components - using profiled sections of insulating materials in conjunction with cast concrete
FR2229830A1 (de) * 1973-05-18 1974-12-13 Sibel Ste Francaise

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH223498A (de) * 1941-06-11 1942-09-30 Piccolin Stefano Tragkonstruktion.
FR1004452A (fr) * 1947-04-24 1952-03-31 Procédé pour la construction de plafonnages et de plafonds à nervures en béton armé, ainsi que de nervures de coffrage en béton armé
FR987101A (fr) * 1949-03-30 1951-08-09 Système de plancher réalisable sans étais et sans coffrage
CH301714A (de) * 1951-10-04 1954-09-30 Bocion Adolf Rippendecke.
FR2166335A1 (en) * 1972-01-05 1973-08-17 Sattanino Jean Pierre Prefabricated flooring components - using profiled sections of insulating materials in conjunction with cast concrete
FR2229830A1 (de) * 1973-05-18 1974-12-13 Sibel Ste Francaise

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5640218A (en) * 1994-12-06 1997-06-17 Kanda Optical Co., Ltd. Foldable spectacles with temple members having deformable earpieces for fitting into compact case
FR2824093A1 (fr) * 2001-04-27 2002-10-31 Claude Marcel Rene Henr Blouet Structure coffrante telle que des poutres de bois et une structure metallique porteuse servant de support a une dalle de beton a faible compression et procede pour son obtention
FR2876718A1 (fr) * 2004-10-19 2006-04-21 Claude Blouet Coffrage bois d'armature de poutre de plancher beton
EP3128244A1 (de) 2015-08-03 2017-02-08 ERNE AG Holzbau Aktivierbares beton-verbundelement
EP3591130A1 (de) * 2018-07-04 2020-01-08 Klasch Spezial- Bauartikel GmbH Deckenkonstruktion
FR3131339A1 (fr) * 2021-12-24 2023-06-30 Ingenova Ouvrage de construction de type plancher composite

Also Published As

Publication number Publication date
FR2692924B1 (fr) 1996-07-26
CA2094995A1 (fr) 1993-10-29
FR2692924A1 (fr) 1993-12-31

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