AU647573B2 - Bridging system - Google Patents

Bridging system Download PDF

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Publication number
AU647573B2
AU647573B2 AU10356/92A AU1035692A AU647573B2 AU 647573 B2 AU647573 B2 AU 647573B2 AU 10356/92 A AU10356/92 A AU 10356/92A AU 1035692 A AU1035692 A AU 1035692A AU 647573 B2 AU647573 B2 AU 647573B2
Authority
AU
Australia
Prior art keywords
web
bridging member
bridging
member according
aperture
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.)
Expired
Application number
AU10356/92A
Other versions
AU1035692A (en
Inventor
Christopher Lee Healy
Robert Charles Labbett
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.)
Stramit Corp Pty Ltd
Original Assignee
Stramit Corp Pty Ltd
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 Stramit Corp Pty Ltd filed Critical Stramit Corp Pty Ltd
Priority to AU10356/92A priority Critical patent/AU647573B2/en
Publication of AU1035692A publication Critical patent/AU1035692A/en
Application granted granted Critical
Publication of AU647573B2 publication Critical patent/AU647573B2/en
Assigned to STRAMIT CORPORATION PTY LIMITED reassignment STRAMIT CORPORATION PTY LIMITED Request to Amend Deed and Register Assignors: STRAMIT CORPORATION LIMITED
Anticipated expiration legal-status Critical
Expired legal-status Critical Current

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
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C3/06—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with substantially solid, i.e. unapertured, web
    • E04C3/07—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with substantially solid, i.e. unapertured, web at least partly of bent or otherwise deformed strip- or sheet-like material
    • 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
    • E04B1/24—Structures comprising elongated load-supporting parts, e.g. columns, girders, skeletons the supporting parts consisting of metal
    • E04B1/2403—Connection details of the elongated load-supporting parts
    • E04B2001/2448—Connections between open section profiles
    • 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
    • E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0443—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by substantial shape of the cross-section
    • E04C2003/046—L- or T-shaped

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Joining Of Building Structures In Genera (AREA)

Description

-1-4 7 5 7 3 -47573
AUSTRALIA
Patents Act 1990
ORIGINAL
COMPLETE SPECIFICATION STANDARD PATENT Invention Title: Bridging System The following statement is a full description of this invention, including the best method of performing it known to me This invention relates to bridging pieces of the kind which are fixed between parallel structural members such as purlins and girts.
The invention specifically relates to the manner in which the bridging piece is engaged with the purlin and with another identical bridging member extending from the other side of the purlin, and is characterised by the formations employed at the ends of the bridging member for this purpose, and with the S" 15 method of their engagement.
By means of the invention it is sought to provide a system in which the bridging members can be engaged with the purlins and fixed to each other with less 2G manpower and in less time than is currently required by some existing systems, or at least to provide an alternative to currently used systems.
An embodiment of the invention will now be described by way of example, with reference to the accompanying drawings, in which: Fig. 1 is a fragmentary isometric view of one end of a bridging member incorporating the present invention; and Fig. 2 is a fragmentary isometric view of the other end of the bridging member of Fig. 1.
As shown in Fig. i, one end of the bridging member is provided with a tongue 11 extending from the web 12 of the bridging member. In an alternative embodiment, the tongue may be formed separately and fixed to the soe* 15 web 12 by suitable means such as rivets.
Near the outer end of the tongue 11 there is provided a square aperture 14, and located inwardly of the .0.000 S" aperture 14 is a circular aperture 15. These apertures are located on the longitudinal axis of the web 12.
Extending rearwardly from the aperture 15 is a raised S"stiffening rib 16, and on either side of the rib 16 a pair of triangular tabs 17 are punched upwardly from the surface of the web, presenting free edges which are respectively parallel to and normal to the axis of the member 10. The edges of the tabs which are normal to the axis are located a little forward of the ends S" of the side flanges 13 of the member At the other end of the bridging member the web 12 is provided, on its longitudinal axis, with a circular aperture 18 of the same diameter as the aperture and a rectangular tongue 19, the width of which is a little less than the width of the aperture 14. The end of the web 12 is chamfered at 20, to permit rotation of the lower half of the purlin in one plane under uplift loading thus reducing stress concentrations in the lower flange of the purlin.
As in many prior art bridging systems, the purlin or other member (not shown) between which the bridging pieces 10 are to be fixed is provided at appropriate intervals along its length with vertical slots dimensioned to receive the tongue 11.
In the assembly of the bridging system, a bridging piece 10 is brought up to a purlin and the tongue 11 inserted into the slot provided for that purpose in the web of the purlin. As the tongue is pushed into 15 the slot, the tabs 17 flex and then snap into engagement with the side of the purlin web opposite the end of the member 10. In this way, the bridging ***piece is secured against dislodgement from the purlin while its other end is being fixed to the tongue 11 of ooo..i another bridging piece. This enables one person to work on the fixing of the bridging, as a second person is not required to hold the bridging piece in place while the other end is being attached to the previously assembled bridging piece.
In fixing the ends of bridging pieces 10, the end ooee• S"illustrated in Fig. 2 is brought up to the tab 11, until the tongue 19 is positioned in register with the aperture 14. To facilitate this, the tongue 19 is *.e.SO preferably bent outwardly from the surface of the web **12 as shown in Fig. 2, either at manufacture or on site before assembly work begins.
The tab is then fully engaged within the aperture 14 and bent back upon itself to lock the two bridging pieces into engagement, the rigger using the handle of his podging spanner for this purpose. No additional -4fastening is normally required, and it will thus be seen that the assembly is a quick and simple process, requiring only one person, one tool and no components other than the bridging pieces themselves.
The apertures 15 and 18 are located so that they are in alignment when the bridging pieces are assembled together, so should it be found that the tabs 19 have been damaged or if additional securement is required, a bolt (not shown) can be passed through the apertures.
While the invention has been described in relation to a preferred embodiment, it is to be appreciated that 0o 15 it is not limited to that particular mode of *0e* realization, and that details of the illustrated embodiment such as the shape and location of the various formations, may be altered without departing from the scope of the invention.
0a 0 o 0 4*

Claims (8)

  1. 2. A bridging member according to claim 1 further ""characterised in that the engagement means of one of said first portion and said second portion comprise deformable engagement means engagable upon omOO• deformation thereof with the engagement means of the other of said first portion and said second portion of a similar member. oooo
  2. 3. A bridging member according to claim 1 or claim 2 further characterised in that the bridging member comprises a web and a flange extending therefrom, said first fastening portion comprising an extension of &aid web beyond said flange.
  3. 4. A bridging member according to claim 3 wherein said first fastening portion is attached to an end of said web. A bridging member according to any preceding claim further characterised in that said second fastening portion comprises an end of said web.
  4. 6. A bridging member according to claim 6 further characterised in that the end of said member containing said second fastening portion is rearwardly chamfered, such chamfer intersecting said flange.
  5. 7. A bridging member according to any one of claims 2 to 6 further characterised in that said deformable 15 engagement means comprises a tab struck from said first or said second portion, the engagement means of said other portion comprising an aperture therein S.,o dimensioned to receive said tab.
  6. 8. A bridging member according to any preceding claim further characterised in that said detent means comprises a pair of tabs struck from said first portion and providing locking faces facing rearwardly of said first portion to engage the web of said purlin 25 when said first portion is fully inserted through the slot therein.
  7. 9. A bridging member according to any one of claims 3 to 8 further characterised in that said member 0 30 comprises a second flange extendin I from the edge of the web of said member opposite the first-mentioned flange thereof. A bridging member according to any preceding claim, further characterised in that each of said first and second portions is provided with an aperture for the reception of a fastener, said apertures being -7- so located that the aperture of the first portion of a first such member aligns with the aperture of an overlapping second portion of a second such member when said first portion is passed fully through the web of a purlin and said second portion is abutted against said web.
  8. 11. A bridging member substantially as described herein with reference to the accompanying drawings. DATED this 21st day of January 1992 KH STRAMIT CORPORATION LIMITED Patent Attorneys for the Applicant: HALFORD CO. I S o A B S T R A C T A purlin bridging member (10) is provided with a tongue (11) which passes through a slot in a purlin web and is locked in placed by detents A deformable tab (19) in the end of a similar member is engaged with an aperture (14) in the tongue to join the bridging members. 6. 0* 0 1
AU10356/92A 1991-01-21 1992-01-21 Bridging system Expired AU647573B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU10356/92A AU647573B2 (en) 1991-01-21 1992-01-21 Bridging system

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
AUPK428191 1991-01-21
AUPK4281 1991-01-21
AU10356/92A AU647573B2 (en) 1991-01-21 1992-01-21 Bridging system

Publications (2)

Publication Number Publication Date
AU1035692A AU1035692A (en) 1992-07-23
AU647573B2 true AU647573B2 (en) 1994-03-24

Family

ID=25614208

Family Applications (1)

Application Number Title Priority Date Filing Date
AU10356/92A Expired AU647573B2 (en) 1991-01-21 1992-01-21 Bridging system

Country Status (1)

Country Link
AU (1) AU647573B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU681639B2 (en) * 1993-05-21 1997-09-04 Stramit Corporation Pty Limited Bridging member

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU713646B2 (en) * 1996-07-22 1999-12-09 Stramit Corporation Pty Limited Improved bridging member

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU466667B2 (en) * 1969-10-24 1972-04-27 Armco Steel Corporation Self fastening spacer for structural members
AU606691B2 (en) * 1987-06-01 1991-02-14 Roofing Centre Pty Ltd, The Purlin bridging

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU466667B2 (en) * 1969-10-24 1972-04-27 Armco Steel Corporation Self fastening spacer for structural members
AU436497B2 (en) * 1970-09-25 1973-04-05 Donn Pacific Limited Improvements in and relating to suspended ceilings
AU606691B2 (en) * 1987-06-01 1991-02-14 Roofing Centre Pty Ltd, The Purlin bridging

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU681639B2 (en) * 1993-05-21 1997-09-04 Stramit Corporation Pty Limited Bridging member

Also Published As

Publication number Publication date
AU1035692A (en) 1992-07-23

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Legal Events

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HB Alteration of name in register

Owner name: STRAMIT CORPORATION PTY LIMITED

Free format text: FORMER NAME WAS: STRAMIT CORPORATION LIMITED