GB2283513A - Lintel - Google Patents

Lintel Download PDF

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Publication number
GB2283513A
GB2283513A GB9421225A GB9421225A GB2283513A GB 2283513 A GB2283513 A GB 2283513A GB 9421225 A GB9421225 A GB 9421225A GB 9421225 A GB9421225 A GB 9421225A GB 2283513 A GB2283513 A GB 2283513A
Authority
GB
United Kingdom
Prior art keywords
strut member
plate elements
structural element
mounting means
plate
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
GB9421225A
Other versions
GB2283513B (en
GB9421225D0 (en
Inventor
Michael Gwyn Williams
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.)
Catnic Ltd
Original Assignee
Catnic 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
Priority claimed from GB939322605A external-priority patent/GB9322605D0/en
Application filed by Catnic Ltd filed Critical Catnic Ltd
Priority to GB9421225A priority Critical patent/GB2283513B/en
Publication of GB9421225D0 publication Critical patent/GB9421225D0/en
Publication of GB2283513A publication Critical patent/GB2283513A/en
Application granted granted Critical
Publication of GB2283513B publication Critical patent/GB2283513B/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • 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
    • 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
    • E04C2003/023—Lintels
    • 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
    • E04C2003/0408—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 assembly or the cross-section
    • E04C2003/0413—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 assembly or the cross-section being built up from several parts
    • 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
    • E04C2003/0408—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 assembly or the cross-section
    • E04C2003/0421—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 assembly or the cross-section comprising one single unitary part
    • 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
    • E04C2003/0426—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 material distribution in cross section
    • E04C2003/0434—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 material distribution in cross section the open cross-section free of enclosed cavities
    • 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
    • E04C2003/0473—U- or C-shaped

Abstract

There is provided a device 1 comprising a strut member 5 adapted to extend between plate elements 2, 3 whereby to maintain them a desired distance apart, and means 6 adjacent at least one end of the strut member 5 and carried thereby for mounting the strut member 5 on one plate element 2, 3 of the structural element 4. The structural element may be a lintel, and the device 1 prevents deflection or shape deformation of the lintel under compressive loads. <IMAGE>

Description

A STRUCTURAL ELEMENT The invention relates to a structural element, particularly a lintel which is used to span an aperture in a cavity wall, and to a device for maintaining the dimensional integrity of such an element or lintel.
Previously, a problem experienced with elements or lintels is that of deflection or shape deformation under compressive loads when in use.
It is an object of the present invention to mitigate such disadvantages.
According to a first aspect of the invention, there is provided a device for maintaining two spaced apart plate elements in a desired spatial relation, comprising a strut member adapted to extend between the plate elements whereby to maintain them a desired distance apart, and means adjacent one end of the strut member and carried thereby for mounting the strut member on one plate element.
The mounting means may be formed integrally from the strut member, and there may be mounting means adjacent each end of the strut member. This provides for ease of manufacture.
The strut member may comprise a planar plate like member. This is a relatively simple construction, particularly as the device may be formed integrally from a metal which may be coated with plastic. This provides for a thermal break and can prevent corrosion.
There may be a plurality of strut members.
The mounting means may comprise a substantially flat surface for engaging the plate member.
The mounting means may comprise a tab extending substantially at a right angle from the plate member.
The device may further be provided with a strengthening means, which may serve to prevent movement of the mounting means relative to the or each strut member. The strengthening means may comprise an L-shaped rib, one bar of said L contacting the mounting means and the other contacting a strut member.
The device may also be provided with stop means, which functions to prevent movement of the mounting means towards the or each strut member. The stop means may comprise a member disposed on the mounting means in a position such that movement of the mounting means towards the or each strut member causes the member to contact the or each strut member. The stop means may comprise for example, a flange formed from an edge of the mounting means adjacent a strut member and disposed to contact a corresponding flange carried by the strut member.
The device may be formed from any substantially rigid material, and is preferably formed from a metal or a plastic.
According to a second aspect of the invention, there is provided a set of parts, comprising a structural element such as a lintel having two spaced apart plate elements, and at least one device as hereinbefore defined, adapted to be mounted on the plate elements.
The plate elements may be substantially parallel plate elements.
According to a third aspect of the invention, there is provided a structural element such as a lintel having two spaced apart plate elements and, mounted on those elements, and extending between them, a device as hereinbefore defined.
The structural element may include a plurality of devices mounted at intervals along the length of the plate elements. It is preferred that the structural element includes a device mounted close to each end of the plate elements, and it is further preferred that the devices are positioned from about 50 - 150mm from each of the ends. It is most preferred that the devices are positioned at about 100mm from each of the ends.
It is further preferred that the or each device is secured to each of said plate elements by a suitable fixing means. Examples of suitable fixing means are rivets, screws and welds. This provides a secure fixing and an improvement in structural performance.
Devices and structural elements or lintels embodying the invention are hereinafter described, way of example, with reference to the accompanying drawings.
Fig. 1 is a perspective view of a structural element including devices according to the invention; Fig. 2 is a perspective view of an embodiment of a device according to the invention; and Fig. 3 is a perspective view showing alternative ways of fitting a device according to the invention.
Referring to the drawings, in which like parts are referred to by like numerals, there is shown a device 1 for maintaining two spaced apart plate elements 2 and 3, such as substantially parallel and upright (in use) front and rear (again in use) members 2 and 3 of a structural element such as a lintel 4 in a desired spatial relation. The lintel 4 can support a load over an aperture in which is mounted for example a door or a window frame (not shown) and as a result the lintel 4 is subject to applied tension loads at its longitudinal ends, and compressive loads at or near the mid-span position.
The tension loads at the end can have a tendency to make the plate elements 2 and 3 splay apart, which whilst upsetting the dimensional integrity of the lintel, can also lead to movement and hence cracking or failure of surrounding plaster, mortar or cement (not shown). In order to obviate the splaying out, there is provided a device 1 for maintaining two spaced apart plate elements 2 and 3 in a desired spatial relation, comprising a strut member 5 adapted to extend between the plate elements 2 and 3 whereby to maintain them the desired distance apart, and means 6 adjacent at least one end of the strut member 5 and carried thereby for mounting the strut member 5 on one plate element 2, 3.
The device 1 may be integrally formed from for example mild steel and may be coated with a plastic coating so that there is no metal to metal contact between the device 1 and the lintel 4 so that corrosive electrochemical action is not set up in use.
Referring to Fig. 2, the embodiment of the device 1 shown comprises a Ushaped member including Shaped strengthening ribs 7 and stop means in the form of inwardly extending flanges 8.
Referring to Fig. 1, in use, the device 1 is secured between plate elements 2, 3 of the lintel 4 by suitable fixing means, including separate mechanical fasteners (not shown) or means such as rivets, screws or welds. Any convenient number of devices 1 may be used, and they may be positioned anywhere along the length of the structural element 4. However, as illustrated in Figure 1, an arrangement wherein devices are placed close to, but not immediately adjacent to each end of the element 4, and close to the centre of the element, is preferred. In particular it has been found that devices fitted about 50-150mm from the ends of the element 4 are unexpectedly better at reducing deflections under load, than when fitted close to or at the ends. Devices 1 fitted at the mid span position act as struts under compressive loads.
As stated, the devices may be secured in place by any suitable means. It is preferred that the devices 1 are rigidly secured in place, and that the devices are secured to both plate elements 2, 3, in order to provide an improvement in structural performance.
Referring to Fig. 3 it can be seen that the device 1 can be secured in a variety of attitudes.

Claims (25)

ClAIMS
1. A device for maintaining two spaced apart plate elements in a desired spatial relation, comprising a strut member adapted to extend between the plate elements whereby to maintain them a desired distance apart, and means adjacent one end of the strut member and carried thereby for mounting the strut member on one plate element.
2. A device according to Claim 1, wherein the mounting means is formed integrally from said strut member.
3. A device according to Claims 1 and 2, comprising mounting means adjacent each end of the strut member.
4. A device according to any preceding claim, wherein the strut member comprises a planar plate-like member.
5. A device according to any preceding claim, formed integrally from metal.
6. A device according to Claim 5, the device being coated with plastic.
7. A device according to any preceding claim, comprising a plurality of strut members.
8. A device according to any preceding claim, wherein the or each mounting means comprises a substantially flat surface for engaging a plate member.
9. A device according to any preceding claim, wherein the or each mounting means comprises a tab extending substantially at a right angle from the plate member.
10. A device according to any preceding claim, further comprising strengthening means to prevent movement of the or each mounting means relative to the or each strut member.
11. A device according to Claim 10, wherein the strengthening means comprises an L-shaped rib, one bar of said L contacting the mounting means, and the other contacting a strut member.
12. A device according to any preceding claim, further comprising stop means, said stop means functioning to substantially prevent movement of the mounting means towards the or each strut member.
13. A device according to Claim 12, wherein the stop means comprises a member disposed on the mounting means in a position such that movement of the mounting means towards the or each strut member causes said member to contact the or each strut member, to prevent further such movement.
14. A device according to Claim 13, wherein the stop means comprises a flange formed from an edge of the or each mounting means, adjacent a strut member and disposed to contact a corresponding flange carried by the strut member.
15. A device for maintaining two spaced apart plate elements in a desired spatial relation, substantially as hereinbefore described, with reference to the accompanying drawings.
16. A set of parts, comprising a structural element such as a lintel having two spaced apart plate elements, and at least one device according to any preceding claim, adapted to be mounted on the plate elements.
17. A set of parts according to Claim 16, the plate elements being substantially parallel plate elements.
18. A set of parts substantially as hereinbefore described, with reference to the accompanying drawings.
19. A structural element such as a lintel, having two spaced apart plate elements and, mounted on those elements, and extending between them, a device according to any of claims 1 to 15.
20. A structural element according to Claim 19, including a plurality of devices according to any of Claims 1 to 15, mounted at intervals along the length of the plate elements.
21. A structural element according to Claim 20, including a device according to any one of Claims 1 to 15, mounted from about 50 to 150mm from each end thereof.
22. A structural element according to Claim 20, including a device according to any one of Claims 1 to 15, mounted at about 100mm from each end thereof.
23. A structural element according to any of Claims 19 to 22, wherein the device according to any of Claims 1 to 15 is secured to each of said plate elements by fixing means.
24. A structural element according to Claim 23, wherein said fixing means comprises one or more of rivets, screws and welds.
25. A structural element such as a lintel in combination with a device according to any of Claims 1 to 15, substantially as hereinbefore described, with reference to the accompanying drawings.
GB9421225A 1993-11-02 1994-10-21 A structural element Expired - Fee Related GB2283513B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9421225A GB2283513B (en) 1993-11-02 1994-10-21 A structural element

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB939322605A GB9322605D0 (en) 1993-11-02 1993-11-02 A structural element
GB9421225A GB2283513B (en) 1993-11-02 1994-10-21 A structural element

Publications (3)

Publication Number Publication Date
GB9421225D0 GB9421225D0 (en) 1994-12-07
GB2283513A true GB2283513A (en) 1995-05-10
GB2283513B GB2283513B (en) 1997-06-04

Family

ID=26303779

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9421225A Expired - Fee Related GB2283513B (en) 1993-11-02 1994-10-21 A structural element

Country Status (1)

Country Link
GB (1) GB2283513B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2325258A (en) * 1997-05-15 1998-11-18 Keystone Lintels Ltd Lintel with bracing member

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1037582A (en) * 1964-03-24 1966-07-27 Dorman Long Steel Ltd Improvements in or relating to combined lintels, arch supports, and dampcourse trays
GB1566160A (en) * 1978-04-03 1980-04-30 Ig Lintels Ltd Lintels
GB2113737A (en) * 1981-12-23 1983-08-10 Mckechnie Engineering Lintel
GB2267517A (en) * 1992-06-02 1993-12-08 Catnic Ltd Spacer for lintel
GB2271130A (en) * 1992-10-05 1994-04-06 Stressline Multi-part gapped lintel to reduce heat bridging

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1598106A (en) * 1978-04-03 1981-09-16 Catnic Components Ltd Herringbone struts
CA2077170A1 (en) * 1992-08-28 1994-03-01 Warren Eberschlag Lightweight metal construction framing components

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1037582A (en) * 1964-03-24 1966-07-27 Dorman Long Steel Ltd Improvements in or relating to combined lintels, arch supports, and dampcourse trays
GB1566160A (en) * 1978-04-03 1980-04-30 Ig Lintels Ltd Lintels
GB2113737A (en) * 1981-12-23 1983-08-10 Mckechnie Engineering Lintel
GB2267517A (en) * 1992-06-02 1993-12-08 Catnic Ltd Spacer for lintel
GB2271130A (en) * 1992-10-05 1994-04-06 Stressline Multi-part gapped lintel to reduce heat bridging

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2325258A (en) * 1997-05-15 1998-11-18 Keystone Lintels Ltd Lintel with bracing member
GB2325258B (en) * 1997-05-15 2000-01-26 Keystone Lintels Ltd Lintels

Also Published As

Publication number Publication date
GB2283513B (en) 1997-06-04
GB9421225D0 (en) 1994-12-07

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19981021