US20040194412A1 - Reinforced wooden structure, framework, building thus equipped and manufacturing method - Google Patents

Reinforced wooden structure, framework, building thus equipped and manufacturing method Download PDF

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Publication number
US20040194412A1
US20040194412A1 US10/832,045 US83204504A US2004194412A1 US 20040194412 A1 US20040194412 A1 US 20040194412A1 US 83204504 A US83204504 A US 83204504A US 2004194412 A1 US2004194412 A1 US 2004194412A1
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planks
reinforcements
wooden
beams
reinforcement
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Jean-Luc Sandoz
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    • 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
    • E04C3/16—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of wood, e.g. with reinforcements, with tensioning members with apertured web, e.g. trusses
    • 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
    • E04C3/17—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of wood, e.g. with reinforcements, with tensioning members with non-parallel upper and lower edges, e.g. roof trusses

Definitions

  • the present invention relates to a reinforced wooden structure.
  • the present invention also relates to a framework equipped with a reinforced wooden structure.
  • the present invention is concerned with a building having a framework equipped with a reinforced wooden structure.
  • the present invention additionally relates to a method for manufacturing and assembling a reinforced wooden structure.
  • Wood is a material which is very widely used in construction, and with which it is possible to produce a whole series of load-bearing systems having their own specific mechanical properties and capable of withstanding all levels and types of load.
  • the various load-bearing systems made of wood are, for the main part, posts and beams, triangulated systems also referred to as “trusses”, jointed systems, portal frames, beam latticeworks, shells and elements operating as plates.
  • the invention relates to the production of a reinforced wooden structure with parallel members or in the form of a truss, which has good mechanical properties, allows a reduction in the production costs and can be readily adapted to suit the characteristics desired for each specific application (load to be withstood, dimensions of the structure, etc.).
  • Documents CH 467,402 and FR 2,303,128 disclose a reinforcement placed in beams which are formed as one piece at the intersection node. The reinforcement is inserted into a simple slot made for its passage. Metal fittings are also provided to keep the assembly in place.
  • Document WO 00/32,891 discloses an economic way of producing beams using structures formed by planks nailed together to make up larger cross sections from wood of small cross section.
  • a reinforced wooden structure is formed by several beams constructed from at least three planks. The two outer planks and the central plank are joined to one another, the two outer planks being placed on either side of the central plank. In addition to the central planks, reinforcements are positioned at the junction zones forming an intersection between at least two beams.
  • a first disadvantage of these reinforced structures is the presence of a given odd number of planks, which gives successive incrementations of thicknesses lacking flexibility.
  • Another disadvantage is that the central planks and the reinforcements must constantly keep the same thickness for one and the same structure.
  • marking, positioning and fixing the various reinforcements and central planks prove to be relatively complex and inexact operations, since this involves longitudinal joining without blocking points.
  • Another disadvantage is that central planks and reinforcements give a large number of components for one and the same truss, which gives rise to high manufacturing costs and increased assembly times.
  • One of the main problems posed is that of being able to absorb the maximum flow of force which is localized at the supports, the intersections and the diagonals so as to simultaneously take up bending, tensile, compressive and shear forces.
  • a second problem is to succeed in reducing the number of components in the case of one and the same reinforced wooden structure.
  • a third problem is to provide a way of marking, positioning and automatically fixing the various central planks.
  • a fourth problem is of developing a method of manufacturing reinforced structures which allows the possibility of assembly by skilled workers on the actual site and can be easily adapted to suit the constructions to be produced.
  • a reinforced wooden structure consists of several beams constructed from at least three wooden planks, two outer planks and one central plank, which are joined to one another, the two outer planks being placed on either side of the central plank, the central plank being positioned at the junction zones forming an intersection between at least two beams.
  • the reinforced structure is characterized in that the central wooden plank is inserted in a housing formed by two cutouts, each made in one of the two outer wooden planks.
  • the means of connection used which are totally independent of the two outer planks and the central plank, will work in shear with the two planks.
  • the housing may preferably be formed symmetrically in the two outer planks, such that the two cutouts have the same depth.
  • the width of the central wooden plank may be greater than or equal to the width of the two outer wooden planks so as to further increase the contact areas and thus the reinforcing effect.
  • the beams of the reinforced structure may comprise a number N of central wooden planks and a number N+1 of outer wooden planks.
  • the N central planks may then be inserted in a number N of housings made in the N+1 outer planks.
  • the beams may further comprise two additional wooden planks arranged on each of the visible faces of the two outermost wooden planks.
  • the beams may comprise a first group having a number N of central planks and a number N+1 of outer planks which is joined to a second group having a number N of central planks and a number N+1 of outer planks.
  • the N central planks may be inserted in N housings made in the N+1 outer planks.
  • the central plank or planks may have a thickness which is different than that of the outer planks.
  • the material of the central plank or planks may be selected, individually or in combination, from the group consisting of Kertopuu® panels and other glued microlam panels with high mechanical performance.
  • a framework is characterized in that it is equipped with a reinforced wooden structure as described above.
  • a building is characterized in that it comprises a framework as described above.
  • a method for manufacturing and assembling the reinforced wooden structure as described above comprises the steps consisting in making a cutout in each of the two outer wooden planks at the junction zones forming an intersection between at least two beams, in positioning a central wooden plank in the cutout, and in assembling the two outer wooden planks and the central wooden plank.
  • the reinforced wooden structure may preferably be assembled by nailing, screwing, pinning and/or by gluing.
  • FIG. 1 represents a side view of a truss
  • FIG. 2 represents a perspective exploded view of a three-plank truss
  • FIG. 3 represents a perspective exploded view of a five-plank truss
  • FIG. 4 represents a view in longitudinal section of a three-plank beam
  • FIG. 5 represents a view in longitudinal section of a five-plank beam
  • FIG. 6 represents a view in longitudinal section of a seven-plank beam
  • FIG. 7 represents a view in longitudinal section of a five-plank beam, in an alternative embodiment
  • FIG. 8 represents a view in longitudinal section of a seven-plank beam, in an alternative embodiment
  • FIG. 9 represents a view in longitudinal section of a six-plank beam, in an alternative embodiment
  • FIG. 10 represents a side view of a truss with simple beams
  • FIG. 11 represents a side view of a two-pinned portal frame
  • FIG. 12 represents a side view of a latticework with parallel members
  • FIG. 13 represents a side view of a half-truss
  • FIG. 14 represents a side view of a truncated truss
  • FIG. 15 represents a side view of a truss with upturned ties
  • FIG. 16 represents a side view of a three-pinned portal frame
  • FIG. 17 represents a side view of a multi-facet truss.
  • the primary reinforced structures in the form of a triangle ( 1 ), or “truss” are generally used to produce roof frameworks and provide the roof with its pitch.
  • the elements involved in the production of such structures are composed of two principal rafters ( 2 ), of a tie ( 3 ), of two diagonals ( 4 ), of a post ( 6 ) and of two angle braces ( 7 ).
  • Such assemblies rest on supports (not shown) arranged at each end of the tie ( 3 ).
  • the various elements that is to say the principal rafters ( 2 ), the tie ( 3 ), the two diagonals ( 4 ), the post ( 6 ), and the two angle braces ( 7 ) are in beam form and are denoted in the remainder of the description by the common term “beam”.
  • Each beam is constructed from planks which are nailed to one another to make up larger cross sections.
  • the constituent planks involved in making up each beam are solid wooden planks whose cross section is generally between 15 cm and 30 cm wide by 3 cm to 10 cm thick, not excluding other specific dimensions. Moreover, with thin planks, for example of around 3 cm to 5 cm, it is possible carry out artificial drying under conventional conditions.
  • the length of said planks may be variable and dependent on the structures to be produced, and will be, for example, between 4 m and 12 m. Longer planks may be obtained by finger jointing.
  • planks may be combined to give larger cross sections.
  • the planks may also be in the form of glued laminated or microlaminated planks of the Kertopuu® type or other equivalents.
  • All of the beams involved in the formation of such a structure are formed by three constituent planks ( 16 , 17 and 18 ), for example nailed together (see FIGS. 2 and 4).
  • the beams comprise two outer planks ( 16 and 17 ) and one central plank ( 18 ).
  • the central plank or plate ( 18 ) constitutes a reinforcement.
  • the central planks or reinforcements ( 18 ) make it possible in a simple manner to reinforce the intersections forming a junction between these beams, and more specifically make it possible for the intersections subjected to the most stress to be reinforced.
  • the reinforcements ( 18 ) are thus positioned in the central layer, which allows the connection means or connectors passing through to be in double shear by comparison with reinforcements exposed on the outside of the structure, as is often the case.
  • the length and width of the reinforcements ( 18 ) is independent of the length and width of the outer planks ( 16 and 17 ).
  • the width of the reinforcements ( 18 ) is greater than or equal to the width of the two outer planks ( 16 and 17 ).
  • the surface area of the reinforcements ( 18 ) is enlarged so as to greatly exceed the dimensions of the node and protrude outside the structure (see FIGS. 1 to 3 and 10 to 17 ).
  • An upper reinforcement ( 19 ) is placed at the intersection ( 9 ) between principal rafters ( 2 ) and post ( 6 ).
  • a lateral reinforcement ( 21 ) connects the intersection ( 11 ) between principal rafters ( 2 ) and diagonals ( 4 ), the intersection ( 12 ) between principal rafters ( 2 ) and angle braces ( 7 ) to the intersection ( 13 ) between tie ( 3 ) and angle braces ( 7 ).
  • the intersections ( 11 , 12 and 13 ) are duplicated to the left and right of one and the same truss ( 1 )
  • two reinforcements ( 21 ), one right and one left, are used.
  • a lower reinforcement ( 22 ) is placed at the intersection ( 14 ) between tie ( 3 ), diagonals ( 4 ), and post ( 6 ).
  • the lateral reinforcement ( 21 ) in the form of a plank is able to take up the bending moment and the local shear which are generated by the two internal beams, for example the compressed diagonal ( 4 ) and the compressed angle brace ( 7 ).
  • the lateral reinforcement ( 21 ) thus reinforces the intersection ( 11 ) with respect to bending and to local shear forces which are important mechanical components of the system of intersection.
  • the lateral reinforcement ( 21 ) acts as an additional rib. It should be noted that the lateral reinforcement ( 21 ) is offset with respect to the node ( 8 ) between the principal rafter (2) and tie ( 3 ).
  • the various reinforcements ( 19 , 21 and 22 ) are inserted in housings. These housings are each formed by two cutouts, each being cut into a face of each of the two outer planks ( 16 and 17 ). The combination of two cutouts constitutes a housing. The length of the housings is independent of the length of the outer planks ( 16 and 17 ).
  • cutouts have a depth which is substantially equal to half the thickness of the various reinforcements ( 19 , 21 and 22 ). By virtue of this characteristic, it is thus no longer necessary for the three constituent planks ( 16 , 17 and 18 ) forming each beam to be of the same thickness.
  • Housings ( 23 ) are thus provided at the upper end of the principal rafters ( 2 ) and of the post ( 6 ) in the region of the intersection ( 9 ). These housings ( 23 ) are intended for the upper reinforcement ( 19 ). Housings ( 24 ) are thus provided over a portion of the length of the principal rafters ( 2 ), at the upper end of the diagonals ( 4 ), over the whole length of the angle braces ( 7 ) and over part of the tie ( 3 ), in the region of the intersections ( 11 , 12 and 13 ). The angle braces ( 7 ) will simply have a thickness which is less than that of the planks ( 16 and 17 ). These housings ( 24 ) are intended for the lateral reinforcements ( 21 ).
  • Housings ( 26 ) are thus provided at the lower end of the diagonals ( 4 ), at the lower end of the post ( 6 ) and at the center of the tie ( 3 ), in the region of the intersection ( 14 ). These housings ( 26 ) are intended for the lower reinforcement ( 22 ).
  • the reinforcements ( 19 , 21 and 22 ) and their positioning by embedding are always calculated to take up the shear forces generated by the two diagonals ( 4 ) occurring at the intersection, to take up the tensile forces and compressive forces in the axis of the diagonals ( 4 ) and to reinforce the principal rafters ( 2 ) in the region of the intersections so as to simultaneously take up bending forces and local compressive forces.
  • These reinforcements ( 19 , 21 and 22 ) of the “plate” type have great rigidity and work in both directions of the plane. However, in certain cases, the reinforcements have a main direction for absorbing forces and they may be reoriented differently in relation to the plank for better efficiency.
  • the cutouts corresponding to the housings ( 23 , 24 and 26 ) are produced automatically, for example by numerical machining of the planks ( 16 and 17 ).
  • the planks ( 16 and 17 ) are thus always planed.
  • An antifungal treatment and a wood stain may be applied during machining.
  • the cutouts forming the housings ( 23 , 24 and 26 ) in the planks ( 16 and 17 ) allows automatic positioning, without any marking, of the reinforcements ( 19 , 21 and 22 ) without having to mark out the positions of the latter, unlike in the prior art. This constitutes an appreciable saving in time and precision in terms of assembly and reliability of the reinforced structure.
  • the production plant can deliver complete trusses with all the components cut and numbered, which a skilled worker can then assemble by himself at his worksite.
  • the various planks ( 16 and 17 ) and reinforcements ( 19 , 21 and 22 ) are connected using independent connectors, by nailing, screwing or pinning.
  • the connectors will pass right through the first plank ( 16 or 17 ), right through the reinforcement ( 18 , 21 or 22 ) and about four-fifths of the way through the second plank ( 17 or 16 ).
  • Such a solution allows greater forces to be withstood, the reinforcements ( 19 , 21 and 22 ) in the region of the intersection zones ( 9 , 11 , 12 , 13 and 14 ) increasing the nailing zones.
  • This nailing operation is designed not to crack the central reinforcements ( 19 , 21 and 22 ).
  • the positioning of the reinforcements ( 19 , 21 and 22 ) inside the housings ( 23 , 24 and 26 ) is favorable for the transmission of forces. It is possible to make savings on connection means, such as nails, screws, bolts, etc. Furthermore, because the reinforcements ( 19 , 21 and 22 ) are pre-fixed by fitting, it is conceivable for them to be glued at the bottom of the cutouts forming the housings ( 23 , 24 and 26 ). This gluing of the reinforcements ( 19 , 21 and 22 ) may be sufficient to assemble and produce the entire wooden structure. These central reinforcements ( 19 , 21 and 22 ) in the form of planks therefore have good performance at their points of assembly.
  • the reinforcements ( 19 , 21 and 22 ) have a thickness which is conventionally between 27 mm and 39 mm.
  • the corresponding cutouts of the housings ( 23 , 24 and 26 ) will have a depth between 13.5 mm and 19.5 mm, respectively.
  • These reinforcements are produced from a panel consisting of a structural element of LVL wood of the microlaminated plywood type.
  • This is a laminated wood made up of spruce veneers which are obtained by rotary cutting. These approximately 3 mm-thick veneers are hot-glued, grain on grain, under high pressure with a weather-resistant phenolic resin. The fibers are arranged in the longitudinal direction.
  • This plywood is marketed for example by Finnforest under the name Kertopuu® or Kerto®. Other glued microlam or plywood panels with high mechanical performance can also be used.
  • the term “outer plank” applies to all the planks ( 27 , 29 , and 32 ) which are not reinforcements, even though they are included within the reinforced structure.
  • the same technical characteristics of the reinforcements and planks already described above for the truss having beams comprising three planks will be adopted, with two upper reinforcements ( 19 ), four lateral reinforcements ( 21 ) and two lower reinforcements ( 22 ).
  • the reinforcements ( 28 and 31 ) are thus duplicated and are then respectively positioned between the first plank ( 27 ) and the second plank ( 29 ) and between the second plank ( 29 ) and the third plank ( 32 ).
  • the plank inserted at the center ( 29 ) will be machined on its two faces to form the cutouts required for positioning the reinforcements ( 28 and 31 ).
  • the term “outer plank” applies to all the planks ( 33 , 36 , 39 and 41 ) which are not reinforcements, even though they are included within the reinforced structure.
  • the same technical characteristics of the reinforcements and planks already described for the truss having beams comprising three or five planks will be adopted, with three upper reinforcements ( 19 ), six lateral reinforcements ( 21 ) and three lower reinforcements ( 22 ).
  • the reinforcements ( 34 , 37 and 39 ) are thus tripled and are then respectively positioned between the first plank ( 33 ) and the second plank ( 36 ), between the second plank ( 36 ) and the third plank ( 38 ) and between the third plank ( 38 ) and the fourth plank ( 41 ).
  • the planks inserted at the center ( 36 and 38 ) will be machined on their two faces to form the cutouts required for positioning the reinforcements ( 34 , 37 and 39 ).
  • the structure is characterized in that the number within the planks of reinforcements being positioned at each intersection is equal to N, the number of outer planks being equal to N+1. Given that the N planks of reinforcements are inserted in the N+1 outer planks, the total thickness of the beams will be equal to the sum of the thicknesses of the N+1 outer planks.
  • Each connector will work with two, four or even six shear sections. This is advantageous in the case of large frameworks intended for agricultural or industrial buildings having free spans of 40 m to 60 m.
  • the term “outer plank” applies to all the planks ( 16 and 17 ) which are not reinforcements ( 18 ), even though they are included within the reinforced structure.
  • the same technical characteristics of the reinforcements and planks already described above for the truss having beams comprising three planks will be adopted, with an upper reinforcement ( 19 ), two lateral reinforcements ( 21 ) and a lower reinforcement ( 22 ).
  • FIG. 8 In another alternative embodiment (see FIG. 8), starting from a structure having beams comprising five constituent planks ( 27 , 28 , 29 , 31 and 32 ) (according to FIG. 5), it may also be envisioned to produce beams having seven planks. All the beams ( 2 , 3 , 4 , 6 and 7 ) involved in the configuration of a reinforced structure of the truss type are formed by seven constituent planks ( 27 , 28 , 29 , 31 , 32 , 42 and 43 ), for example nailed together. The two planks ( 42 and 43 ) are fixed to the respective free visible outer face of the two outermost planks ( 27 and 32 ).
  • the term “outer plank” applies to all the planks ( 27 , 29 and 32 ) which are not reinforcements ( 28 and 31 ), even though they are included within the reinforced structure.
  • the same technical characteristics of the reinforcements and planks already described above for the truss having beams comprising three or five planks will be adopted, with two upper reinforcements ( 19 ), four lateral reinforcements ( 21 ) and two lower reinforcements ( 22 ).
  • first substructure or group comprising three constituent planks ( 16 a , 17 a , and 18 a ) which is joined to a second substructure or group comprising three constituent planks ( 16 b , 17 b and 18 b ).
  • the term “outer plank” applies to all the planks ( 16 a , 16 b , 17 a and 17 b ) which are not reinforcements ( 18 a and 18 b ), even though they are included within the reinforced structure.
  • the same technical characteristics of the reinforcements and planks already described above for the truss having beams comprising three or five planks will be adopted, with two upper reinforcements ( 19 ), four lateral reinforcements ( 21 ) and two lower reinforcements ( 22 ).
  • a truss seen in cross section must always be symmetrical with respect to the axis of the centermost plank, that is to say, depending on the particular case, the reinforcement or the central plank which is not a reinforcement.
  • the reinforcements will in principle have the same thickness.
  • the central reinforcement could have one thickness and the lateral reinforcements taken in pairs could have another thickness. This symmetry makes it possible to avoid unwanted forces, such as twisting forces on the truss, which would cause the truss to buckle on its more rigid side.
  • the reinforcement of the intersections and of the wooden structure according to the present invention can be tailored equally well to the two broad families of triangulated wooden structures known as “structures with parallel members” and “triangulated trusses”.
  • the structure with parallel members is used for example for bridges or horizontal floor structures.
  • truss with simple beams see FIG. 10
  • a two-pinned portal frame see FIG. 11
  • a latticework with parallel members see FIG. 12
  • a half-truss see FIG. 13
  • a truncated truss see FIG. 14
  • a truss with upturned ties see FIG. 15
  • a three-pinned portal frame see FIG. 16
  • a multi-facet truss see FIG. 17
  • They comprise a structure substantially related to the truss ( 1 ) described in detail above. Where appropriate, they are placed on two vertical pillars ( 44 ). They comprise as many upper reinforcements ( 19 ), lateral reinforcements ( 21 ) and lower reinforcements ( 22 ) as there are possibilities of intersections and assembly nodes between the constituent beams ( 2 , 3 , 4 and 6 ).

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Chemical And Physical Treatments For Wood And The Like (AREA)
US10/832,045 2001-11-06 2004-04-26 Reinforced wooden structure, framework, building thus equipped and manufacturing method Abandoned US20040194412A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR01.14311 2001-11-06
FR0114311A FR2831906B1 (fr) 2001-11-06 2001-11-06 Structure renforcee en bois, charpente, batiment ainsi equipe et procede de fabrication
PCT/FR2002/003610 WO2003040488A1 (fr) 2001-11-06 2002-10-22 Structure renforcee en bois, charpente, batiment ainsi equipe et procede de fabrication

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/FR2002/003610 Continuation WO2003040488A1 (fr) 2001-11-06 2002-10-22 Structure renforcee en bois, charpente, batiment ainsi equipe et procede de fabrication

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US20040194412A1 true US20040194412A1 (en) 2004-10-07

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US (1) US20040194412A1 (fr)
EP (1) EP1451420B1 (fr)
AT (1) ATE478210T1 (fr)
DE (1) DE60237389D1 (fr)
FR (1) FR2831906B1 (fr)
WO (1) WO2003040488A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080178555A1 (en) * 2007-01-26 2008-07-31 C. Green & Sons, Inc. Tapered truss
US20140144097A1 (en) * 2007-01-26 2014-05-29 Wayne Green Tapered truss
US11142910B2 (en) * 2019-12-09 2021-10-12 Don Kanawyer Abutting irregular hexagons as beam ties for a dual beam joist supporting a truss

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US3070923A (en) * 1960-10-05 1963-01-01 Redi Truss International Inc Structural truss and joint for use therewith
US3592717A (en) * 1967-07-20 1971-07-13 Weyerhaeuser Co Glued joint with intergral adhesive key
US3991535A (en) * 1975-03-14 1976-11-16 Keller James R Pressed-in dovetail type joint
US4441287A (en) * 1980-07-24 1984-04-10 Engineered Roof Trusses Pty. Ltd. Framed building construction
US4891927A (en) * 1983-10-07 1990-01-09 Metsaliiton Teollisuus Oy Joint for connecting wooden beams to each other, and the use of the joint in roof truss structures
US5649403A (en) * 1995-01-04 1997-07-22 Haisch; Douglas C. Truss structure
US5681021A (en) * 1995-06-27 1997-10-28 Noll; Ronald C. Roof jack with bracket
US20020124521A1 (en) * 1998-12-03 2002-09-12 Jean-Luc Sandoz Wooden trussed structural systems, such as frameworks, bridges, floors
US6701690B2 (en) * 2001-07-17 2004-03-09 Guildo Deschenes I-shaped wooden beam

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CH467402A (de) 1967-12-15 1969-01-15 Ringbau Ag Gurt-Streben- Verbindung für Holz-Gitterträger
FR2164514B3 (fr) * 1971-12-24 1974-08-23 Holme & Sons Ltd Walter
FR2303128A1 (fr) 1975-03-07 1976-10-01 Habitat Communaute Travail Perfectionnements aux procedes pour l'assemblage des elements de charpente
FR2572759A1 (fr) * 1984-11-08 1986-05-09 Burger Raymond Poutre triangulee en bois, assemblee par compression progressive entre deux surfaces, collage et autoserrage
DE19847858A1 (de) * 1997-10-22 1999-04-29 Fritz Rutz Fachwerkträger
FI112106B (fi) * 1999-10-15 2003-10-31 Lauttaniemen Teollisuus Ky Puuristikkorakenne

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3070923A (en) * 1960-10-05 1963-01-01 Redi Truss International Inc Structural truss and joint for use therewith
US3592717A (en) * 1967-07-20 1971-07-13 Weyerhaeuser Co Glued joint with intergral adhesive key
US3991535A (en) * 1975-03-14 1976-11-16 Keller James R Pressed-in dovetail type joint
US4441287A (en) * 1980-07-24 1984-04-10 Engineered Roof Trusses Pty. Ltd. Framed building construction
US4891927A (en) * 1983-10-07 1990-01-09 Metsaliiton Teollisuus Oy Joint for connecting wooden beams to each other, and the use of the joint in roof truss structures
US5649403A (en) * 1995-01-04 1997-07-22 Haisch; Douglas C. Truss structure
US5681021A (en) * 1995-06-27 1997-10-28 Noll; Ronald C. Roof jack with bracket
US20020124521A1 (en) * 1998-12-03 2002-09-12 Jean-Luc Sandoz Wooden trussed structural systems, such as frameworks, bridges, floors
US6701690B2 (en) * 2001-07-17 2004-03-09 Guildo Deschenes I-shaped wooden beam

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080178555A1 (en) * 2007-01-26 2008-07-31 C. Green & Sons, Inc. Tapered truss
US20140144097A1 (en) * 2007-01-26 2014-05-29 Wayne Green Tapered truss
US9181700B2 (en) * 2007-01-26 2015-11-10 Morton Building, Inc. Tapered truss
US9689163B2 (en) 2007-01-26 2017-06-27 Morton Building, Inc. Tapered truss
US11142910B2 (en) * 2019-12-09 2021-10-12 Don Kanawyer Abutting irregular hexagons as beam ties for a dual beam joist supporting a truss

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FR2831906B1 (fr) 2004-09-24
DE60237389D1 (de) 2010-09-30
WO2003040488A1 (fr) 2003-05-15
EP1451420A1 (fr) 2004-09-01
ATE478210T1 (de) 2010-09-15
FR2831906A1 (fr) 2003-05-09
EP1451420B1 (fr) 2010-08-18

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