EP0203868A1 - Bauelement für die Bauindustrie, Verfahren zum Zusammenbau und Einrichtung zur Ausführung des Verfahrens - Google Patents

Bauelement für die Bauindustrie, Verfahren zum Zusammenbau und Einrichtung zur Ausführung des Verfahrens Download PDF

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Publication number
EP0203868A1
EP0203868A1 EP86401130A EP86401130A EP0203868A1 EP 0203868 A1 EP0203868 A1 EP 0203868A1 EP 86401130 A EP86401130 A EP 86401130A EP 86401130 A EP86401130 A EP 86401130A EP 0203868 A1 EP0203868 A1 EP 0203868A1
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EP
European Patent Office
Prior art keywords
plate
members
pressing
longitudinal
installation
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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.)
Granted
Application number
EP86401130A
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English (en)
French (fr)
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EP0203868B1 (de
Inventor
Rémy Bruno Colladello
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Individual
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Individual
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Filing date
Publication date
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Priority to AT86401130T priority Critical patent/ATE59874T1/de
Publication of EP0203868A1 publication Critical patent/EP0203868A1/de
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Publication of EP0203868B1 publication Critical patent/EP0203868B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/12—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of wood, e.g. with reinforcements, with tensioning members
    • E04C3/14—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of wood, e.g. with reinforcements, with tensioning members with substantially solid, i.e. unapertured, web
    • 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

Definitions

  • the present invention relates to a construction element for the building industry, comprising a plate on which is formed at least one longitudinal box of triangular section which consists of two oblique walls fixed by their divergent ends on the plate and joined together, at their cowergentes ends, by a member, which has, on its face opposite the plate, two longitudinal grooves serving as housings for part of the converging ends of the oblique walls.
  • the invention also relates to a method for the manufacture of such a building element as well as to an installation for the implementation of this method.
  • construction elements of the aforementioned type constitute excellent self-supporting panels usable for the realization of the roofs or floors of large buildings such as sports halls, factories or public buildings.
  • These self-supporting panels have the main advantage of having very good flexural strength while being relatively light. They thus make it possible to considerably reduce the intermediate supports and even to eliminate them entirely in the case of use at medium range. They are also quick to set up on site and have a pleasant aesthetic which can be modified as desired by simple exterior fittings.
  • the present invention proposes to remedy this drawback and, to do this, it relates to a construction element of the type specified in the preamble, which is characterized in that the parts, external to the members, of the converging ends of the oblique walls have , over their entire length, chamfered surfaces by which they are in mutual contact, while the diverging ends of the oblique walls have, on at least one of the faces of the latter, longitudinal notches by which they rest on longitudinal members secured to the plate, on either side of the respective longitudinal edges of the latter.
  • the notches extend over the external faces of the oblique walls of the box, covering the entire length thereof, and, in the case of a construction, in particular a self-supporting panel, comprising several substantially parallel boxes formed on a common plate, the oblique walls facing each other of two neighboring boxes are supported, by their notch, on a common median beam.
  • the construction element thus designed can be very easily assembled by the implementation of a pressure bonding process which is also the subject of the present invention, this process consisting, after machining to the required shapes and dimensions of the or members (s), oblique walls, side members and plate, to glue these components on their surfaces intended to come into mutual contact, then to pre-assemble them in the final form of the construction element to be obtained and finally pressing the pre-assembly thus produced between, on the one hand, the back of the panel and, on the other hand, the member (s) and the side members, while laterally immobilizing the plate and the external side members.
  • a pressure bonding process which is also the subject of the present invention, this process consisting, after machining to the required shapes and dimensions of the or members (s), oblique walls, side members and plate, to glue these components on their surfaces intended to come into mutual contact, then to pre-assemble them in the final form of the construction element to be obtained and finally pressing the pre-assembly thus produced between, on the one hand, the back of the
  • the method according to the invention can advantageously be automated, with considerable time savings lowering manufacturing costs, by means of an installation which is also the subject of the present invention and which is characterized in that it comprises means presses which delimit a longitudinal cavity for receiving the pre-assembled building element and which are controlled to pass from an inactive state to an active state in which they maintain the latter in pressure between, on the one hand, the back of its plate and, on the other hand, its member (s) and its side members, stop means being further provided for laterally immobilizing the pre-assembled construction element along its plate and its external side members.
  • the pressing means comprise members for supporting the pre-assembled construction element, which extend in substantially parallel directions over the entire length of said receiving cavity and are positioned at least vertically in line with the locations of the members and side members of said element, as well as pressing members which which respectively disposed above at least some of the support and are movable in the direction of the latter, between an inactive position and an active position, the bearing surfaces of some lying in the same plane, while those of others are positioned in staggered rows according to a mutual arrangement corresponding to that of members and beams on the pre-assembled building element.
  • the construction element pre-assembled and pre-glued at the desired locations, can be introduced into this installation to come to rest on the support members, either by the back of its plate when these are are in the same plane, either by its members and its side members when they are staggered.
  • the pressing members in the inactive position are respectively plumb with the members and the side members and, under the action of a control device acting in synchronism with the movement of introduction of the element, they are brought in their active position in which they effectively press the whole of the pre-assembled construction element against the support members, along the glued surfaces of the members and the side members.
  • the integrity of the pre-assembly is preserved thanks to the action of the lateral stop means which will advantageously consist of a template having a cavity in which the construction element is pre-assembled, before its introduction into the pressing installation, this cavity having the same lateral dimensions as the plate of the pre-assembled building element and a height greater than that of this plate.
  • This template will be more particularly used in the case where the plate of the pre-assembled building element is formed of adjoining boards, to then simultaneously constitute a "mold" maintaining the integrity of the plate during the introduction of the pre-assembly. in the pressing plant.
  • the lateral stop means will preferably consist of two parallel rows of rollers with vertical axis of rotation, which are arranged on either side of said receiving cavity , up to the location of the tray and outer rails of the pre-assembled building element and which are separated by a distance equal to the width of the latter, the pre-assembled building element then being blocked laterally, over practically the entire height of the plate and the side rails outside, by these two rows of rollers.
  • this second embodiment of the stop means can be used even if the plate of the building element is formed of several adjoining planks, since in this case the latter rest on the top of the element and cannot therefore separate when it is introduced into the pressing installation.
  • the support members will advantageously be constituted by the upper strands of a train of endless chain of rollers bearing on rails, which simultaneously constitute a means for successively introducing the pre-assembled and pre-glued construction elements into the pressing installation.
  • the setting of the adhesive is also accelerated thanks to the presence inside the installation of a heating device acting on the glued areas of the construction element maintained under pressure.
  • Heating can be provided by a blower injecting hot air into a tunnel that envelops the building element inside the pressing installation or by microwave heating elements.
  • the double pressing and heating operation can be carried out in the space of a few seconds, at the end of which the pressing members are returned to their inactive position and the roller chains extract the pre-assembled building element from the installation; a new pre-glued and pre-assembled construction element is then introduced into the installation to undergo the pressing operation which has just been described.
  • a conveyor can be provided at the outlet thereof which successively takes up the assembled construction elements extracted by the roller chains and returns to empty, at the entrance of the installation, after going to a pre-assembly station for the building element.
  • each of the pressing members consists of a pressing shoe mounted to slide, by means of return springs, at the lower end d 'a rigid member secured to the installation frame, an inflatable tube connected to a blower being placed between each pressing shoe and the lower end of the member carrying it.
  • each of the pressing members consists of a number of jacks aligned in the longitudinal direction of said receiving cavity and the rods of which are integral with a common pressing shoe on which rollers rollers mounted free in rotation on an endless chain driven around the row of cylinders, in said longitudinal direction, these rollers being, in the active position of the cylinders, intended to bear against the component of the element of pre-assembled construction subjected to the action of the respective pressing member.
  • the construction element according to the invention which is exemplified in FIGS. 1 and 2, is in fact a self-supporting wooden panel constituted by a plate 1 of generally rectangular shape under which two boxes 2 of triangular section are formed, stretching in the longitu direction dinal of the stage 1.
  • each ', box 2 comprises two oblique side walls 3, 4 and 3a, 4a covering the entire length of the plate 1, these two walls diverging upward to come to be fixed to the plate 1 and converging downward to be joined by a member 5 which also extends over the entire length of the plate 1.
  • each member 5 has, on its face opposite the plate 1, two longitudinal and parallel V-shaped grooves 6, 7, in which the outer edge parts of the converging ends 8, 9 of the oblique walls are respectively housed and fixed.
  • the inner edge parts of the converging ends 8, 9 of the oblique walls of each box 2 are chamfered at 10 in the median longitudinal plane and over the entire length of the latter, and are placed in mutual contact. along their surfaces 10 thus chamfered.
  • the divergent ends 11, 12 of the oblique walls 3, 4, 3a, 4a each have over the entire length of the outer face of the latter, a notch 13 cut at right angles.
  • the oblique walls facing each other 4, 3a are supported and are fixed on the same median flat spar 14, while the external oblique walls 3, 4a are supported and are fixed respectively on two external flat spars 15 which are approximately twice as wide as the median beam and extend flush with the longitudinal edges of the plate 1, these beams 14, 15 being furthermore integral with the underside of the latter.
  • the non-scalloped parts of the divergent ends 11, 12 of the oblique walls are directly in contact with the plate 1 by bevelled surfaces 11a, 12a.
  • the walls 3, 3a, 4 and 4a of the boxes 2 will preferably be made of glulam, as shown in Figure 1.
  • the tray 1 will, for the same reasons, be made up of adjoining wooden planks 1a, extending in a direction perpendicular to the longitudinal axis of the caissons 2.
  • the panels of the type described above have the advantage that they can be used for the construction of large floors. vaulted surface or roofs with a minimum of intermediate supports. In this use, several panels will be joined side-by-side, along their longitudinal edges, by an interlocking system 16 with complementary tongues and grooves (see FIG. 1). In addition, the panel will preferably be bent in the longitudinal direction, towards the outside of the plate 1, and prestressed by means of a cable 17 stretched in contact with the bottom of the point of each of the boxes 2, over the entire length of these, by two fixing members 18.
  • the space 19 defined between two boxes 2 can be closed by a plate 20 resting on the faces of the members 5, facing the plate 1.
  • sheaths which can be used in the context of air heating or can be used for the passage of electric cables or water pipes.
  • these sheaths can be filled with thermal and / or acoustic insulation.
  • this panel lies in the simplicity of its assembly which can be carried out using an installation, a first embodiment of which will now be described with reference to FIGS. 3 to 6.
  • this embodiment comprises, on the one hand, a template 22, which, as will be seen below, constitutes a support for a pre-assembly P of the panel to be manufactured and, on the other hand, a press 23 into which the template 22 carrying the pre-assembly P is intended to be introduced.
  • This template 22 is more precisely constituted by a rectangular metal plate 26 provided with a peripheral edge 27 which is raised over a height greater than that of the plate 1 of the panel to be manufactured and delimits with the plate 26 a rectangular cavity of the same length and of same width as this tray.
  • the various components of the panel to be manufactured are pre-assembled to the inside the template cavity 22.
  • the boards 1a intended to form the plate 1 entirely lines the bottom of the template and is in contact, like the external side members 15, with the edge 27.
  • the template 22 carrying the pre-assembly P is introduced into the press 23 by one of its short sides, using six endless parallel chains with rollers 28 which extend at the same height and over the entire length of the press in the lower part of the frame 24 thereof.
  • Each of these chains 28 is driven around two large toothed wheels 29 and, on their upper side, their rollers 30 roll on a support rail 31, slightly hollowed out with a regular curvature in the length direction.
  • the rollers 30 of each chain 28 are mounted free in rotation, in groups of two, on stirrups 32 fixed to the chain and each of these stirrups 32 carries, opposite the rollers 30, a block of parallelepipedal wood 33.
  • the press 23 contains six pressing members 36a to 36f extending in the direction of introduction of the template 22, over a length somewhat greater than that of the latter and respectively plumb with the rails 31 of the roller chains 28.
  • Each of these pressing members comprises a rigid vertical member 37 secured to the frame 24 of the press and the lower end of which carries a pressing shoe 38 provided with two side cheeks 39 which are respectively placed in sliding contact with the side faces 40 of the frame 37 and are connected to the latter by return springs 41.
  • an inflatable tube 42 connected to a blower not shown, is interposed between each frame 37 and the pressing shoe 38 which it carries.
  • the two central pressing members 36c and 36d are juxtaposed on either side of the median longitudinal plane X of the press 23.
  • the group of these two pressing members 36c, 36d and the other members pressers 36a, 36b, 36e and 36f are mutually positioned at intervals corresponding to those which, on the pre-assembly P, separate the members 5 and the side members 14, 15.
  • the members 37 of the pressing members 36a to 36f have a height such that their pressing shoes 38 are staggered so as to delimit in the raised position, a space high enough to allow the introduction of the template 22 carrying the pre-assembly P.
  • each of the pressing shoes 38 is curved downward, in the direction of its length and according to a curvature to that of the concavity of the support rails 31
  • Figures 3 and 5 also show that inside the press and all around the volume for receiving the template 22 and the pre-assembly P which it carries, extends a tunnel 44 which closes on itself.
  • a sheath 45 in the middle of which are housed a fan 46 and several electrical resistors 47 located downstream of the latter, the resistors 47 can be replaced by a water or steam heating coil.
  • the front wall of the sheath 45 is provided with a door 48 allowing the template 22 to be inserted into the press 23, while its rear wall is provided with an outlet door 49.
  • the template 22 carrying the pre-assembly P is guided, when it is introduced into the press 23, between two rows of rollers 50 with vertical axes, extending respectively on the two sides of the press, in relation to symmetry with respect to the median longitudinal plane X thereof.
  • the pressing members 36a to 36f are respectively plumb with the members 5 and the median side members 14 and external 15 of the pre-assembly P.
  • the press 23 is further equipped with a control device, not shown, which acts in response to the complete introduction of the template 22, to stop the movement of the roller chains 28 and put the blower into service; the latter then inflates the tubes 42 over the entire length of the pressing members 36a to 36f.
  • a control device not shown, which acts in response to the complete introduction of the template 22, to stop the movement of the roller chains 28 and put the blower into service; the latter then inflates the tubes 42 over the entire length of the pressing members 36a to 36f.
  • the pressing shoes 38 are moved downwards, against the action of the springs 41, to come to bear on the members 5 and the side members 14, 15 which they press strongly.
  • the pressure forces are transmitted to all the glued surfaces of the pre-assembly P which, thanks to the shape of the template, retains its integrity during pressing.
  • the curved lower surfaces 43 of the pressing shoes 38 produce the desired longitudinal bending of the panel, in cooperation with the concavity of the rails 31 of the roller chains 28.
  • this closed hot air heating circuit can be replaced by microwave heating elements.
  • the press control device stops the fan 46 and deactivates the blower.
  • the tubes 42 being thus deflated, the springs 41 draw the pressing shoes 38 back to the high position.
  • the exit door 49 of the press 23 opens and the roller chains 28 are then again set in motion to extract the template 22 and place it on a conveyor 51 which brings it to a demolding station (not shown). ) where the assembled panel is removed from the template.
  • a new template 22 carrying a pre-assembly P is introduced into the press 23 and undergoes the cycle of operations which has just been described.
  • the conveyor 51 can be used for the introduction of the templates 22 into the press after passing to a station where the panels are pre-assembled in their respective template 22.
  • Figures 7 and 8 illustrate a second embodiment of the pressing installation according to the invention, which differs from the first only on the structure of the pressing members 36a to 36f.
  • Each of these pressing members is constituted by a row of jacks 52 whose bodies 53 are integral with the frame 24 of the press.
  • the rods 54 of these jacks 52 are, in each pressing member, joined by a common pressing shoe 55, on the convex lower surface 56 from which rollers rollers 57 are mounted free in rotation on an endless chain 58 driven around the row of jacks 52 in the same direction as the lower endless chains 28; the rollers 57 have the same configuration as those of the latter and in particular carry wooden pressing blocks 59.
  • the template 22 carrying the pre-assembly P enters the press 23 according to this second embodiment of the invention, it is sandwiched between the blocks 33 and 59 of the rollers 30 and 57 of the two trains of lower and upper endless chains 28 and upper 58 and is thus moved without interruption over the entire length of the press 23.
  • the jacks 52 press the pre-assembly P, as described above, by means of the pressing shoes 55, rollers 57 and pressing blocks 59. It is thus possible to continuously assemble the panels according to the invention, hence a significant gain in terms of yield and manufacturing costs.
  • the operating cycle of the installation according to this second embodiment of the invention is identical to that of the first.
  • FIG. 9 shows a third embodiment of the pressing installation according to the invention
  • the parallel roller chains 60 a to 60 f are positioned at two levels, according to an enantiomorphic staggered arrangement of that of the pressing members of the two previous embodiments and of which the pressing members 61, which can be indifferently those of the first or of the second embodiment, are arranged at the same height, respectively perpendicular to the six roller chains 60a to 6 0f .
  • the third embodiment of the pressing installation according to the invention is further characterized by the presence of two parallel rows of idle rollers with vertical axes 62, 63, symmetrical with respect to the median vertical plane X of the installation and separated by 'a distance equal to the width of the pre-assembly. These two rows of rollers 62, 63 are also located just below the pressing blocks 64 in the lowered position and have a height greater than that of the plate 1 of the pre-assembly P.
  • the pre-glued and pre-assembled construction element P can, in this pressing installation, be introduced without upside down and undergo the pressing operation in this position, without the need to use a template, as in the previous two embodiments.
  • the boards la which constitute the plate 1 of the pre-assembly P remain joined, because they rest on the top of the latter which is itself in support, by its members 5 and its side members 14, 15 on the blocks of wood 65 roller chains 60a to 60f.
  • the pre-assembly P is housed between the two rows of idle rollers 62, 63 which, being in contact with the plate 1 and the outer longitudinal members 15, play the role of the edges 27 of the template 22 of the two previous embodiments and therefore maintain the integrity of the pre-assembly during the pressing operation which is carried out as described above.
  • the rows of idle rollers 62, 63, 66 and 67 also guide the pre-assembly P during its movement at through the pressing plant.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Wood Science & Technology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Electromagnetism (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Stored Programmes (AREA)
  • Conveying And Assembling Of Building Elements In Situ (AREA)
  • Sewage (AREA)
  • Panels For Use In Building Construction (AREA)
  • Finishing Walls (AREA)
EP86401130A 1985-05-29 1986-05-28 Bauelement für die Bauindustrie, Verfahren zum Zusammenbau und Einrichtung zur Ausführung des Verfahrens Expired - Lifetime EP0203868B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT86401130T ATE59874T1 (de) 1985-05-29 1986-05-28 Bauelement fuer die bauindustrie, verfahren zum zusammenbau und einrichtung zur ausfuehrung des verfahrens.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8508052 1985-05-29
FR8508052A FR2582699B1 (fr) 1985-05-29 1985-05-29 Element de construction autoporteur, procede pour sa fabrication et installation pour la mise en oeuvre de ce procede

Publications (2)

Publication Number Publication Date
EP0203868A1 true EP0203868A1 (de) 1986-12-03
EP0203868B1 EP0203868B1 (de) 1991-01-09

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ID=9319641

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86401130A Expired - Lifetime EP0203868B1 (de) 1985-05-29 1986-05-28 Bauelement für die Bauindustrie, Verfahren zum Zusammenbau und Einrichtung zur Ausführung des Verfahrens

Country Status (4)

Country Link
EP (1) EP0203868B1 (de)
AT (1) ATE59874T1 (de)
DE (1) DE3676742D1 (de)
FR (1) FR2582699B1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2793827A1 (fr) * 1999-05-20 2000-11-24 Jean Denis Chansard Poutre de construction, procede pour sa fabrication et installation pour la mise en oeuvre du procede
FR2813904A1 (fr) 2000-09-14 2002-03-15 Jean Luc Sandoz Panneau de construction en bois autoportant

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR648575A (fr) * 1928-02-09 1928-12-11 Plafond en porte-à-faux composé de poutres en bois ou en béton disposées les unes contre les autres en forme de toit
DE706714C (de) * 1937-12-30 1941-06-03 Franz Paetz Verfahren zur Herstellung eines im Querschnitt dreieckigen Hohlbalkens aus Holz
US2444133A (en) * 1943-05-11 1948-06-29 Mid West Wood Products Company Building unit of generally right triangular form
US2829403A (en) * 1954-01-22 1958-04-08 Willatts William Henry Building units or components
DE1930414A1 (de) * 1969-06-14 1970-12-17 Erhard Meier Nagelbinder
DE1609898B1 (de) * 1965-08-18 1971-03-25 Wiesner Erich Dr Techn Dipl In Stossausbildung fuer hoelzerne Hallentraeger od.dgl.aus verleimten Lamellen
US3709762A (en) * 1970-09-01 1973-01-09 B Chandler Press for a wooden truss
FR2279900A1 (fr) * 1974-07-23 1976-02-20 Colladello Remy Element de construction pour l'industrie du batiment
FR2462247A1 (fr) * 1979-07-31 1981-02-13 Borras Fornas Juan Machine pour assemblage automatique des portes

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR648575A (fr) * 1928-02-09 1928-12-11 Plafond en porte-à-faux composé de poutres en bois ou en béton disposées les unes contre les autres en forme de toit
DE706714C (de) * 1937-12-30 1941-06-03 Franz Paetz Verfahren zur Herstellung eines im Querschnitt dreieckigen Hohlbalkens aus Holz
US2444133A (en) * 1943-05-11 1948-06-29 Mid West Wood Products Company Building unit of generally right triangular form
US2829403A (en) * 1954-01-22 1958-04-08 Willatts William Henry Building units or components
DE1609898B1 (de) * 1965-08-18 1971-03-25 Wiesner Erich Dr Techn Dipl In Stossausbildung fuer hoelzerne Hallentraeger od.dgl.aus verleimten Lamellen
DE1930414A1 (de) * 1969-06-14 1970-12-17 Erhard Meier Nagelbinder
US3709762A (en) * 1970-09-01 1973-01-09 B Chandler Press for a wooden truss
FR2279900A1 (fr) * 1974-07-23 1976-02-20 Colladello Remy Element de construction pour l'industrie du batiment
FR2462247A1 (fr) * 1979-07-31 1981-02-13 Borras Fornas Juan Machine pour assemblage automatique des portes

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2793827A1 (fr) * 1999-05-20 2000-11-24 Jean Denis Chansard Poutre de construction, procede pour sa fabrication et installation pour la mise en oeuvre du procede
FR2813904A1 (fr) 2000-09-14 2002-03-15 Jean Luc Sandoz Panneau de construction en bois autoportant
EP1317590B1 (de) * 2000-09-14 2006-06-28 Jean-Luc Sandoz Selbsttragendes baulelement aus holz

Also Published As

Publication number Publication date
DE3676742D1 (de) 1991-02-14
EP0203868B1 (de) 1991-01-09
FR2582699B1 (fr) 1991-04-05
ATE59874T1 (de) 1991-01-15
FR2582699A1 (fr) 1986-12-05

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