CA2650788A1 - Wooden lattice beam for construction - Google Patents

Wooden lattice beam for construction Download PDF

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Publication number
CA2650788A1
CA2650788A1 CA002650788A CA2650788A CA2650788A1 CA 2650788 A1 CA2650788 A1 CA 2650788A1 CA 002650788 A CA002650788 A CA 002650788A CA 2650788 A CA2650788 A CA 2650788A CA 2650788 A1 CA2650788 A1 CA 2650788A1
Authority
CA
Canada
Prior art keywords
mortise
tenons
chords
struts
glued
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.)
Granted
Application number
CA002650788A
Other languages
French (fr)
Other versions
CA2650788C (en
Inventor
Artur Schwoerer
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.)
Peri SE
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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 CA2650788A1 publication Critical patent/CA2650788A1/en
Application granted granted Critical
Publication of CA2650788C publication Critical patent/CA2650788C/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
    • E04B1/18—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons
    • E04B1/26—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of wood
    • 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
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0486—Truss like structures composed of separate truss elements
    • E04C2003/0491—Truss like structures composed of separate truss elements the truss elements being located in one single surface or in several parallel surfaces

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Joining Of Building Structures In Genera (AREA)
  • Rod-Shaped Construction Members (AREA)
  • Bridges Or Land Bridges (AREA)

Abstract

The invention proposes a wooden lattice girder 1 for construction comprising an upper chord 4 and a lower chord 5, connected to each other by struts 2, having tenons 7 each at the ends thereof, wherein the tenons 7 at one end each of the struts 2 are glued into mortises 9 on the upper chord 4, running in the longitudinal direction of the upper chord 4, and the tenons 7 at the other end of the struts 2 are glued into mortises 9 on the lower chord 5, running in the longitudinal direction of the lower chord 5.
The lateral surfaces 12 of a respective mortise 9 running in the longitudinal direction thereof encompass an acute angle and the surfaces of the tenon 7 glued to said lateral surfaces 12 of said mortise 9 encompass a corresponding acute angle.

Claims (8)

1. Wooden lattice girder (1) for construction comprising an upper chord (4) and a lower chord (5), connected to each other by struts (2), having tenons (7) each at the ends thereof, wherein the tenons (7) at one end each of the struts (2) are inserted and glued into mortises (9) on the upper chord (4), running in the longitudinal direction of the upper chord (4), and the tenons (7) at the respective other end of the struts (2) are inserted and glued into mortises (9) on the lower chord (5), running in the longitudinal direction of the lower chord (5), wherein the lengths of the mortises in the longitudinal direction of the chords correspond, or largely correspond, to the dimensions of the tenon inserted therein, and wherein the lateral surfaces (12) of a respective mortise (9) running in the longitudinal directions thereof encompass an acute angle and the surfaces (10) of the tenon (7) glued to said lateral surfaces (12) of the said mortise (9) encompass a corresponding acute angle, characterized in that the cross-sections of the tenons are made to have, or largely have, a rectangular shape, and the mortises (9) in the chords (4,5), when viewed in side elevation, have circular and/or oval-shaped partial areas and that the corresponding dovetail shapes of the struts are matched accordingly to these partial areas.
2. Lattice girder according to claim 1, characterized in that the ends of the struts (2) have two tenons (7) each.
3. Lattice girder according to at least any one of claims 1 to 2, characterized in that there is a clearance between the mortise bottom side end of the tenons (7) and the mortise bottom of the mortise (9), into which the respective tenon (7) is glued.
4. Lattice girder according to at least any one of claims 1 to 3, characterized in that the mortise bottoms of the mortises (9) in the longitudinal direction of the chords (4,5) have a semi-circular profile (20) each.
5. Lattice girder according to at least any one of claims 1 to 4, characterized in that two struts (2) each adjacent to each other are interlocked with one another in the region of their ends being glued into mortises (9) of one of the chords (4, 5).
6. Lattice girder according to claim 5, characterized in that the glued ends are interlocked with one another by means of a dovetail fine finishing (14) of the abutting tenons (7).
7. Lattice girder according to at least any one of claims 5 to 6, characterized in that the dovetailed ends each form a respective semi-circular profile in the longitudinal direction of the chords.
8. Method for producing a lattice girder according to at least any one of the claims 1 to 7, wherein the tenons (7) of the struts (2) are glued into the mortises (9) of the chords (4, 5) characterized in that by means of a circular saw blade a first lateral surface (12) of a respective mortise (9) running in the longitudinal direction of the chords (4, 5) is formed by making a first cut with a circular saw and the second lateral surface (12) of the mortise (9) running in the longitudinal direction of the chords (4, 5) is formed by making a second cut with a circular saw, wherein the cutting planes of the circular saw cuts are set in accordance with the acute angle to be generated between the lateral surfaces (12) of the mortise (9).
CA2650788A 2006-05-10 2007-04-17 Wooden lattice beam for construction Active CA2650788C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102006021731.4 2006-05-10
DE102006021731.4A DE102006021731B4 (en) 2006-05-10 2006-05-10 Method for producing a lattice girder made of wood for the construction sector
PCT/DE2007/000661 WO2007128255A1 (en) 2006-05-10 2007-04-17 Wooden lattice beam for construction

Publications (2)

Publication Number Publication Date
CA2650788A1 true CA2650788A1 (en) 2007-11-15
CA2650788C CA2650788C (en) 2012-05-01

Family

ID=38292974

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2650788A Active CA2650788C (en) 2006-05-10 2007-04-17 Wooden lattice beam for construction

Country Status (14)

Country Link
US (2) US20090094930A1 (en)
EP (1) EP2021557B1 (en)
JP (1) JP4818433B2 (en)
KR (1) KR101083891B1 (en)
CN (1) CN101443521B (en)
AU (1) AU2007247633B2 (en)
BR (1) BRPI0709790B1 (en)
CA (1) CA2650788C (en)
DE (1) DE102006021731B4 (en)
NO (1) NO342435B1 (en)
RU (1) RU2401922C2 (en)
UA (1) UA91620C2 (en)
WO (1) WO2007128255A1 (en)
ZA (1) ZA200809478B (en)

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Also Published As

Publication number Publication date
WO2007128255A1 (en) 2007-11-15
JP4818433B2 (en) 2011-11-16
KR101083891B1 (en) 2011-11-15
KR20080106591A (en) 2008-12-08
RU2008148599A (en) 2010-06-20
DE102006021731A1 (en) 2007-11-22
AU2007247633A1 (en) 2007-11-15
RU2401922C2 (en) 2010-10-20
NO342435B1 (en) 2018-05-22
NO20085109L (en) 2008-12-08
US20090094930A1 (en) 2009-04-16
US20110289881A1 (en) 2011-12-01
EP2021557B1 (en) 2019-03-20
ZA200809478B (en) 2009-11-25
UA91620C2 (en) 2010-08-10
BRPI0709790A2 (en) 2011-07-26
JP2009536277A (en) 2009-10-08
CN101443521B (en) 2012-07-25
CN101443521A (en) 2009-05-27
EP2021557A1 (en) 2009-02-11
CA2650788C (en) 2012-05-01
DE102006021731B4 (en) 2015-07-30
BRPI0709790B1 (en) 2018-01-09
AU2007247633B2 (en) 2012-01-12

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