WO2010094110A1 - Solive en bois porteuse de membrure supérieure et procédé - Google Patents

Solive en bois porteuse de membrure supérieure et procédé Download PDF

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Publication number
WO2010094110A1
WO2010094110A1 PCT/CA2010/000196 CA2010000196W WO2010094110A1 WO 2010094110 A1 WO2010094110 A1 WO 2010094110A1 CA 2010000196 W CA2010000196 W CA 2010000196W WO 2010094110 A1 WO2010094110 A1 WO 2010094110A1
Authority
WO
WIPO (PCT)
Prior art keywords
wooden
joist
chord
webs
metal webs
Prior art date
Application number
PCT/CA2010/000196
Other languages
English (en)
Inventor
André LEMYRE
Original Assignee
Solive Ajourée 2000 Inc.
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
Priority claimed from CA002654720A external-priority patent/CA2654720C/fr
Priority claimed from US12/388,031 external-priority patent/US8166724B2/en
Application filed by Solive Ajourée 2000 Inc. filed Critical Solive Ajourée 2000 Inc.
Publication of WO2010094110A1 publication Critical patent/WO2010094110A1/fr

Links

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
    • E04C3/29—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures
    • E04C3/292—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures the materials being wood and metal
    • 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
    • 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
    • E04C3/29—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures
    • E04C3/291—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures with apertured web

Definitions

  • Wooden joists are horizontal supporting members that run from wall to wall, wall to beam, or beam to beam to support a ceiling, roof or floor. Wooden joists have a pair of horizontal chords, interrelated by a board in an I-joist configuration, or by V-shaped webs, in an open-joist or truss configuration.
  • a wooden joist comprising: a wooden top chord; a wooden bottom chord; wooden boards adhesively connected to the wooden top chord and to the wooden bottom chord to form an I-joist section along a portion of the wooden joist; wooden webs adhesively connected to the wooden top chord and to the wooden bottom chord to form an open- joist section along another portion of the wooden joist; a bearing extension defined by the wooden top chord extending beyond any one of the wooden boards and the wooden webs at an end of the wooden joist; at least a pair of metal webs in alignment on opposed sides of the wooden joist, each metal web comprising a top connector end fixed to the bearing extension, a bottom connector end fixed to the bottom chord, and a structural arm between the connector ends, the metal webs being solely provided in an end region along the wooden joist; whereby the wooden joist is adapted to be in a top-chord bearing relation with a beam by the bearing extension and the top connector ends
  • the structural arm of the metal webs overlaps between the I-joist section and the open-joist section.
  • two pairs of the metal webs are provided at the end region of the wooden joist.
  • the two pairs of the metal webs are arranged to form V-shaped structures of webs on the opposed sides of the wooden joist.
  • the two pairs of the metal webs are arranged such that the structural arms of the metal webs are parallel to one another on the opposed sides of the wooden joist.
  • the metal webs are in the open- joist section of the wooden joist. Still further in accordance with the first embodiment, a portion of the I-joist section is removed, such that the wooden joist has a selected length.
  • a wooden column is provided between the open- joist section and the I-joist section.
  • said metal webs are provided in the two end regions of the wooden joist.
  • a method for adapting a wooden joist to a top-chord bearing configuration comprising: providing a joist having a wooden top chord and a wooden bottom chord adhesively connected to wooden boards to form a joist having at least an I-joist portion; cutting an end of the I-joist section as a function of a required length of the wooden joist in such a way that a bearing extension is defined by the top chord extending beyond the wooden boards at an end of the I- joist; securing metal webs on opposed sides of the wooden joist such that the metal webs are connected to the bearing extension; whereby the joist may be used in a top-chord bearing relation with a beam.
  • a wooden joist comprising: a wooden bottom chord; wooden boards adhesively connected to the wooden bottom chord so as to project upwardly therefrom; a wooden top chord adhesively connected to a top edge of the wooden boards to form an I- joist section with the wooden bottom chord and the wooden boards, the wooden top chord extending beyond the wooden boards at an end of the wooden joist to form a bearing extension; and at least a pair of metal webs in alignment on opposed sides of the I-joist, each metal web comprising a top connector end fixed to the bearing extension, a bottom connector end fixed to the bottom chord, and a structural arm between the connector ends, the metal webs being solely provided in an end region along the I-joist; whereby the wooden joist is adapted to be in a top-chor
  • two pairs of the metal webs are provided at the end region of the wooden joist.
  • a portion of the I-joist section is removed, such that the wooden joist has a selected length.
  • FIG. 1 is a perspective view of a wooden joist in accordance with an embodiment, in a top- chord bearing relation with a beam, on an I-joist section;
  • Fig. 2 is an enlarged perspective view of the wooden joist of Fig. 1, with an end in a bottom- chord bearing configuration;
  • Fig. 4 is an enlarged elevation view of the end of the wooden joist of Fig. 2;
  • Fig. 5 is an enlarged elevation view of the end of the wooden joist of Fig. 3;
  • Fig. 8 is an enlarged elevation view of an end of the wooden joist of Fig. 1, with pairs of metal webs forming a V and with a removed I-joist section;
  • Fig. 10 is an enlarged perspective view of the wooden joist of Fig. 9, with an end in a bottom-chord bearing configuration
  • Fig. 11 is an enlarged perspective view of the wooden joist of Fig. 9, with an end in a top-chord bearing relation with a beam;
  • Fig. 12 is an enlarged elevation view of the end of the wooden joist of Fig. 10;
  • Fig. 13 is an enlarged view of the end of the wooden joist of Fig. 11, with pairs of metal webs forming a V;
  • Fig. 14 is an enlarged view of the end of the wooden joist of Fig. 11, with pairs of metal webs in a parallel relation;
  • Fig. 15 is a perspective view of a wooden I-joist in accordance with yet another embodiment, in a top- chord bearing relation with a beam.
  • the wooden webs 16 form a series of Vs, and are connected to the chords 12 and 14 using adhesives, as well as complementary joint portions (e.g., scarf joints) between the webs 16 and the chords 12 and 14.
  • the section 18 is said to be open, as the gaps between the wooden webs 16 can be used as a passage for pipes, ventilation ducts, wires and the like, in the ceiling or below the floor.
  • the board 20 interconnects the chords 12 and 14.
  • the board/boards 20 may be received in channels defined in the chords 12 and 14, with an adhesive used to mechanically connect the board/boards 20 to the chords 12 and 14.
  • complementary joint portions such as scarf joints or the like, may be used to increase the contact area between the chords 12 and 14 and the board 20.
  • the board 20 may be made of different types of wood panels, such as oriented strand board (i.e., OSB) , plywood, or the like.
  • Wooden columns 24 are also provided between the chords 12 and 14. One wooden column 24 is at the junction between the wooden webs 16 and the board 20. Another wooden column 24 is at an end of the wooden joist 10, on the side of the open joist.
  • a ribbon 26 (aka, a 2 x 4 ribbon or a 2 x 4 band) is optionally provided at an end of the wooden joist 10, in a clearance in the top chord 12 and wooden column 24.
  • the ribbon 26 is used for the lateral support of the wooden joist 10, when supported in a bottom-chord bearing configuration, on a structure A.
  • the top chord 12 is shown projecting beyond the end of the bottom chord 14 and the end of the board 20.
  • the projection is referred to as bearing extension 28.
  • the bearing extension 28 is seated on an upper surface of a beam B, in a top-chord bearing relation between the wooden joist 10 and the beam B.
  • metal webs 30 are added to the wooden joist 10, in the vicinity of the bearing extension 28.
  • the metal webs 30 each have an arm 32 at the ends of which are connector ends 34.
  • the connectors ends 34 have a plurality of teeth, whereby the connector ends 34 pressed on the lateral surfaces of the chords 12 and 14 are firmly secured thereto.
  • the arm 32 is in an oblique relation with respect to the chords 12 and 14.
  • the metal webs 30 come in pairs, with a web 30 on each side of the wooden joist 10, whereby only one of the pair of webs 30 is shown in Figs. 1, 3 and 5. Accordingly, the metal webs 30 reinforce the wooden joists 10.
  • the metal webs 30 are connected to the wooden joist 10 such that the upper connector ends 34 are on the bearing extension 28. By having the upper connection ends 34 on the bearing extension, a part of the load on the bottom chord 14 is supported by the beam B through the metal web 30.
  • the I-joist section 22 of the wooden joist 10 is provided to adjust the overall length of the wooden joist 10.
  • the I-joist section 22 may be reduced in length, by removing an end thereof.
  • a removed portion of the I-joist section 22 is illustrated at 22' .
  • the removed portion 22' is typically sawn off, forming a cut that is perpendicular to the longitudinal axes of the top chord 12 and bottom chord 14.
  • a bearing extension 28 is kept when cutting off an end of the I-joist section 22.
  • the removal of an end of the I-joist section 22 is preferably performed in plant, according to the length required by a customer. Once a portion has been removed, the metal webs 30 are pressed onto the wooden joist 10. As is shown in Fig. 6, the connector end 34 on the top chord 12 is on the bearing extension 28. Referring to Fig. 7, a second pair of metal webs
  • the Vs of metal webs 30 may be in the I-joist section 22 of the wooden joist 10. Alterna- tively, as shown in Fig. 8, the Vs of metal webs 30 may overlap between the open-joist section 18 and the I-joist section 22. Referring to Fig.
  • a wooden joist in accordance with another embodiment of the present disclosure is generally shown at 50.
  • the wooden joist 50 is similar in construction to the wooden joist 10 of Figs. 1 to 8 , whereby like components bear like reference numerals.
  • the wooden joist 50 of Fig. 9 is in top-chord bearing relation with the beam B from the end of the open-joist section 18.
  • the bearing extension 28 extends beyond a top end of one of the wooden webs 18.
  • the top connector ends 34 of the metal webs 30 are on the bearing extension 28, whereby the top connector ends 34 are on top of the beam B when the wooden joist 50 is in top-chord bearing relation with the beam B.
  • the I-joist section 22 is in a bottom- chord bearing relation with the structure A.
  • the length of the I-joist section 22 may be reduced so as to obtain a wooden joist of selected length.
  • the wooden joist 50 may be sectioned on site.
  • additional metal webs 30 may be used to reinforce the structural connection between the top chord 12 and the bottom chord 14.
  • two pairs of metal webs 30 (on opposed sides of the wooden joist 50) are arranged to form a V-shaped structure.
  • two pairs of metal webs 30 (on opposed sides of the wooden joist 50) are arranged to have the metal webs 30 of the same side in a parallel relation. Both these configurations increase the contact area between connector ends 34 of the metal webs 30 and the chords 12 and 14, thereby structurally reinforcing the wooden joist 50.
  • a wooden joist in accordance with yet another embodiment is generally shown at 60.
  • metal webs 30 By having the use of metal webs 30 limited to the end of the wooden joists 10, 50 and 60, these wooden joists have a limited amount of metal components, thereby reducing their cost.
  • the metal webs 30 structurally reinforce the joist 10, 50 and 60, by providing an additional amount of retention between the chords 12 and 14 (i.e., tensile strength) . This additional amount of retention adds to that provided by the adhesive connection between the chords 12 and 14. Accordingly, by the presence of the metal webs 30, the stiffness and damping of the wooden joists 10, 50 and 60 are increased.
  • metal webs 30 can be provided at both ends of the wooden joists 10, 50 and 60, so as to have the wooden joists 10, 50 and/or 60 supported in top-chord bearing on both ends.
  • the wooden joists 10, 50 and/or 60 can be provided at both ends of the wooden joists 10, 50 and 60, so as to have the wooden joists 10, 50 and/or 60 supported in top-chord bearing on both ends.
  • the wooden joists 10 can be provided at both ends of the wooden joists 10, 50 and 60, so as to have the wooden joists 10, 50 and/or 60 supported in top-chord bearing on both ends.
  • the metal web 30 covers approximately 1 foot of span, and a pair of webs 30 combined in a V- shape (e.g., Fig. 7) spans on 2 feet.
  • the metal webs 30 are in the end region of the joists so as to cover between 5 to 15% of the end of the joist in terms of span. Configurations in which more than a pair of metal webs 30 are used are typically for longer spans of wooden joist.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Floor Finish (AREA)
  • Rod-Shaped Construction Members (AREA)

Abstract

L'invention porte sur une solive en bois qui comprend une membrure supérieure et des membrures inférieures en bois. Des planches en bois sont reliées de façon adhésive aux membrures pour former une section de solive en I le long d'une partie de la solive en bois. Des âmes en bois peuvent être reliées de façon adhésive aux membrures pour former une section de solive ouverte le long d'une autre partie de la solive en bois. Une extension porteuse est définie par la membrure supérieure en bois s'étendant au-delà d'une extrémité de la solive en bois. Des âmes métalliques sont alignées sur des côtés opposés de la solive en bois. Chaque âme métallique comprend une extrémité de liaison supérieure fixée à l'extension porteuse, une extrémité de liaison inférieure fixée à la membrure inférieure et un bras structurel entre les extrémités de liaison. Les âmes métalliques sont uniquement disposées dans une région d'extrémité le long de la solive en bois, grâce à quoi la solive en bois est apte à être dans une relation de support de membrure supérieure avec une poutre.
PCT/CA2010/000196 2009-02-18 2010-08-23 Solive en bois porteuse de membrure supérieure et procédé WO2010094110A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US12/388,031 2009-02-18
CA002654720A CA2654720C (fr) 2009-02-18 2009-02-18 Solive en bois porteuse a membrures superieures et methode
US12/388,031 US8166724B2 (en) 2009-02-18 2009-02-18 Top-chord bearing wooden joist and method
CA2654720 2009-02-18

Publications (1)

Publication Number Publication Date
WO2010094110A1 true WO2010094110A1 (fr) 2010-08-26

Family

ID=42633380

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CA2010/000196 WO2010094110A1 (fr) 2009-02-18 2010-08-23 Solive en bois porteuse de membrure supérieure et procédé

Country Status (1)

Country Link
WO (1) WO2010094110A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3961455A (en) * 1973-05-29 1976-06-08 Peters Dierk D Truss support connector
US5560177A (en) * 1996-03-04 1996-10-01 Brightwell; Lionel L. Trimmable open web joist
US5592800A (en) * 1995-01-20 1997-01-14 Truswal Systems Corporation Truss with adjustable ends and metal web connectors
CA2195616A1 (fr) * 1997-01-21 1998-07-21 Wayne Clark Solive armee
US7240463B2 (en) * 2000-06-27 2007-07-10 Nci Building Systems, L.P. Structural member for use in the construction of buildings
US20070256389A1 (en) * 2006-05-03 2007-11-08 Davis John D Sheet Metal Web Stiffener And Chord Nailing Restrictor For Wooden I-Joist

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3961455A (en) * 1973-05-29 1976-06-08 Peters Dierk D Truss support connector
US5592800A (en) * 1995-01-20 1997-01-14 Truswal Systems Corporation Truss with adjustable ends and metal web connectors
US5560177A (en) * 1996-03-04 1996-10-01 Brightwell; Lionel L. Trimmable open web joist
CA2195616A1 (fr) * 1997-01-21 1998-07-21 Wayne Clark Solive armee
US7240463B2 (en) * 2000-06-27 2007-07-10 Nci Building Systems, L.P. Structural member for use in the construction of buildings
US20070256389A1 (en) * 2006-05-03 2007-11-08 Davis John D Sheet Metal Web Stiffener And Chord Nailing Restrictor For Wooden I-Joist

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