WO2011063447A1 - Structural element - Google Patents
Structural element Download PDFInfo
- Publication number
- WO2011063447A1 WO2011063447A1 PCT/AU2010/001534 AU2010001534W WO2011063447A1 WO 2011063447 A1 WO2011063447 A1 WO 2011063447A1 AU 2010001534 W AU2010001534 W AU 2010001534W WO 2011063447 A1 WO2011063447 A1 WO 2011063447A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- web
- structural element
- flanges
- lip
- pair
- Prior art date
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
- 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
-
- 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
- E04C2003/0482—Z- or S-shaped
Definitions
- the present invention relates to a structural element.
- the present invention relates to a structural element intended to be used as a load bearing element in a skeletal structure, and especially as a purlin for use in a roof supporting building structure.
- Purlins have long been used as load bearing elements in the construction of buildings and other similar structures.
- Conventional purlins are typically cold formed from roll- reduced steel into sections having either a generally Z shaped or C shaped cross section.
- Some attempts have been made to design purlins having increased strength relative to basic Z-section or C-section purlin configurations.
- Australian patent number 707074 discloses a Z-section purlin having increased strength due to the addition of lip returns.
- this arrangement suffers from the drawback that the purlins are difficult to stack, which therefore makes the handling and storage of the purlins difficult.
- the invention resides broadly in a structural element comprising a web, a pair of substantially oppositely directed flanges projecting outwardly from respective ends of the web, wherein the web comprises two or more channels formed therein, and wherein at least two of the two or more channels project into the web in opposed orientations to one another.
- Each of the pair of flanges may be disposed at any suitable angle to the web. However, in a preferred embodiment of the invention, both of the pair of flanges are disposed substantially at right-angles to the web. Thus, in this embodiment of the invention, the pair of flanges are located substantially parallel to one another.
- Each of the pair of flanges may be of any suitable width. However, it is preferred that the width of each of the flanges is less than the height of the web. Each of the pair of flanges may be of the same or different width to one another. Preferably, one of the pair of flanges is wider than the other of the pair of flanges. This allows for the structural elements to be readily stacked together for transportation and storage, or joined in an overlapping relationship. In a preferred embodiment of the invention, at least one of the pair of flanges may be provided with a lip extending therefrom. Preferably, the lip extends from, or adjacent to, an end of the at least one flange located furthest from the web.
- each of the pair of flanges may be provided with a lip.
- the lip (or lips if present) may be disposed at any suitable angle to the flange from which it extends. Preferably, however, each of the lip or lips are disposed at an included angle of less than 180° to the flange or flanges.
- each of the lips may be disposed at the same angle to its respective flange, or each of the lips may be disposed at a different angle to its respective flange.
- at least one of the lips is disposed substantially at a right angle to the flange.
- each of the pair of flanges is provided with a lip.
- the lip associated with a first flange is preferably disposed at an included angle of approximately 90° to the first flange, while the lip optionalassociated with a second flange is preferably disposed and included angle of between 90° and 180° to the second flange.
- it is preferred that the width of the first flange is less than that of the second flange.
- each of the lips may be substantially linear along its entire length, may be curved or bent, or may be substantially linear along a portion of its length and curved or bent along a portion of its length.
- the lip is curved or bent along at least a portion of its length
- the lip may be provided with one or more curves or bends that extend in any suitable direction.
- an inner radius of the one or more curves or bends may be located on the side of the lip closest to the web, or the side of the lip furthest from the web.
- the lip is provided with two or more curves or bends, the inner radius of at least one of the two or more curves or bends may be located on the side of the lip closest to the web, while an inner radius of at least another of the two or more curves or bends may be located on the side of the lip furthest from the web.
- the at least one lip may be provided with a lip return.
- the lip return may be disposed at any suitable angle to the lip.
- the lip return extends from at or adjacent the end of the lip remote from the flange.
- the lip return may be of any suitable width.
- the lips returns may be of any suitable configuration.
- the lip returns may be substantially linear along their entire length, may be curved or bent, or may be substantially linear along a portion of their length and curved or bent along a portion of their length.
- each of the lips may be provided with a lip return.
- the lip returns may be of the same configuration as one another, or may be of different configurations to one another.
- Each of the two or more channels may be of any suitable size, shape or configuration.
- both of the two or more channels extend at least partially along the length of the web.
- both of the two or more channels may extend continuously along the length of the web, while alternatively, one or more of the two or more channels may comprise a plurality of discrete channels extending coaxially along the length of the web.
- the two or more channels may be provided with any suitable shape.
- the two or more channels may be substantially U- or V-shaped, or may comprise a pair of sidewalls interconnected by a bottom wall, or a combination thereof.
- adjacent channels are spaced apart from one another by a portion of the height of the web.
- the two or more channels may be of different sizes to one another.
- the two or more channels may project different distances into the web as one another.
- the distance between the opposing walls of the channels may vary between channels. In this way, positive lapping of structural elements may be achieved.
- each of the two or more channels projects into the web is not critical, it is preferred that each of the two or more channels is shaped so as to enhance one or more of the torsional, vertical and lateral strengths of the structural element.
- the size and shape of the two or more channels is preferably sufficient to restrict the movement of adjacent or lapped structural elements along an axis of the web. This is particularly advantageous when the structural elements are used in conditions of high load and/or high stress.
- the channels may be used to provide both structural support and engagement enhancement for the use of one or more bridging members.
- the channels may provide a structural engagement mechanism for connection means (such as brackets or the like) for use in various applications (such as suspended ceilings).
- the two or more channels may be located at any suitable position along the height of the web.
- a first channel of the at least two channels that project into the web in opposed orientation to one another is located in a first portion of the height of the web between the middle of the web and a first flange
- a second channel of the at least two channels that project into the web in opposed orientation to one another is located in a second portion of the height of the web between the middle of the web and a second flange.
- the at least two of the two or more channels are located an approximately equal distance from the middle of the web as one another.
- the structural element may be fabricated from any suitable material using any suitable technique.
- the structural element is fabricated from a metal or metal alloy (and, in particular, steel or aluminium) and is fabricated by rolling (either cold or hot rolling) or extrusion.
- the structural element of the present invention may be fabricated in a wide variety of sizes depending on the application in which the structural element is to be used.
- the thickness of the structural element may also vary depending on the application in which the structural element is to be used.
- the structural element may be formed from 2mm thick steel if the load it is to bear is relatively small, whereas if the load is relatively high, the structural element may be formed from 3mm thick steel, and so on.
- these thicknesses are mentioned by way of illustration only, and the structural element may be formed of any suitable thickness.
- the thickness of the structural element may be substantially constant across its entire cross-section or may vary across the cross-section.
- the structural element is fabricated as a unitary structure.
- the structural element may be formed as a number of individual components which are adapted for connection to one another, such as by welding, brazing, soldering, or the like.
- the structural element may be a purlin.
- the structural element may be a purlin having a substantially Z-shaped cross-section.
- the invention resides broadly in a structural element comprising a web, a pair of flanges projecting outwardly in substantially the same direction from respective ends of the web, wherein the web comprises two or more channels formed therein, and wherein at least two of the two or more channels project into the web in the same orientation as one another.
- Each of the pair of flanges may be disposed at any suitable angle to the web. However, in a preferred embodiment of the invention* both of the pair of flanges are disposed substantially at right-angles to the web. Thus, in this embodiment of the invention, both of the pair of flanges are located substantially parallel to one another.
- Each of the pair of flanges may be of any suitable width. However, it is preferred that the width of each of the flanges is less than the height of the web. Each of the pair of flanges may be of the same or different width to one another. Preferably, one of the pair of flanges is wider than the other of the pair of flanges. This allows for the structural elements to be readily stacked together for transportation and storage, or joined in an overlapping relationship.
- At least one of the pair of flanges may be provided with a lip extending therefrom.
- the lip extends from or adjacent to an end of the at least one flange located furthest from the web.
- each of the pair of flanges may be provided with a lip.
- the lip may be disposed at any suitable angle to the flange from which it extends. Preferably, however, each of the lip or lips are disposed at an included angle of less than 180° to the flange or flanges.
- each of the lips may be disposed at the same angle to its respective flange, or each of the lips may be disposed at a different angle to its respective flange.
- at least one of the lips is disposed substantially at a right angle to the flange. In embodiments in which the flange is disposed at substantially a right angle to the web, the lip will therefore be disposed substantially parallel to the web.
- each of the pair of flanges is provided with a lip. In this embodiment, it is preferred that both of the lips are disposed at an included angle of about 90° to their respective flanges.
- the two or more channels may be of any suitable size, shape or configuration. Preferably, the two or more channels extend at least partially along the length of the web. In some embodiments of the invention, the two or more channels may extend continuously along the length of the web, while alternatively, one or more of the two or more channels may comprise a plurality of discrete channels extending coaxially along the length of the web.
- the at least two of the two or more channels extend into the web in the same direction as the flanges.
- the two or more channels may be provided with any suitable shape.
- the two or more channels may be substantially U- or V-shaped, or may comprise a pair of sidewalls interconnected by a bottom wall or a combination thereof.
- adjacent channels are spaced apart from one another by a portion of the height of the web.
- the two or more channels may be of different sizes to one another.
- the two or more channels may project different distances into the web as one another.
- the distance between the opposing walls of the channels may vary between channels. In this way, positive lapping of structural elements may be achieved. Further, configuring the two or more channels in this way ensures the correct orientation and. assembly of other constructions members (brackets and the like). This is particular of use for kit products and the like.
- each of the two or more channels projects into the web is not critical, it is preferred that each of the two or more channels is shaped so as to enhance one or more of the torsional, vertical and lateral strength of the structural element.
- the channels may be used to provide both structural support and engagement enhancement for the use of one or more bridging members.
- the channels may provide a structural engagement mechanism for connection means (such as brackets or the like) for use in various applications (such as suspended ceilings).
- the two or more channels project into the web in the same direction that the flanges extend.
- an engagement mechanism is created for other construction members (brackets or the like) that is both flush and positive. This is particularly of use in situations in which conjoined members of the same or a differing nature are required.
- the two or more channels may be located at any suitable position along the height of the web.
- a first channel of the at least two channels that project into the web in the same orientation to one another is located in an upper portion of the height of the web
- a second channel of the at least two channels that project into the web in the same orientation to one another is located in a lower portion of the height of the web.
- at least two of the two or more channels are located an approximately equal distance from the middle of the web as one another, although it will be understood that the two or more channels could also be located at different distances from the middle of the web as one another if desired.
- the structural element of the present invention is provided with increased strength relative to that obtained from conventional structural elements of this kind. It is envisaged that further channels may be provided on the web as required. The exact position and orientation of these further channels is not critical. Again however, additional increases in strength or other physical characteristics of the element such as torque resistance may be gained dependent upon the position of the additional channels.
- the structural element may be fabricated from any suitable material using any suitable technique.
- the structural element is fabricated from a metal or metal alloy (and, in particular, steel or aluminium) and is fabricated by rolling (either cold or hot rolling) or extrusion.
- the structural element of the present invention may be fabricated in a wide variety of sizes depending oh the application in which the structural element is to be used.
- the thickness of the structural element may also vary depending on the application in which the structural element is to be used.
- the structural element may be formed from 2mm thick steel if the load it is to bear is relatively small, whereas if the load is relatively high, the structural element may be formed from 3mm thick steel, and so on.
- these thicknesses are mentioned by way of illustration only, and the structural element may be formed of any suitable thickness.
- the structural element is fabricated as a unitary structure.
- the structural element may be formed as a number of individual components which are adapted for connection to one another, such as by welding, brazing, soldering, or the like.
- the structural element may be a purlin.
- the structural element may be a purlin having a substantially C-shaped cross-section.
- the structural element of the present invention demonstrated increased torsional strength across all spans tested and under all tested bridging conditions.
- the structural element of the present invention provides increased strength and stability during construction than conventional purlins.
- Figure 1 illustrates an end view of a Z-shaped purlin according to an embodiment of the present invention
- Figure 2 illustrates a perspective view of a Z-shaped purlin according to an embodiment of the present invention
- Figure 3 illustrates an end view of a C-shaped purlin according to an embodiment of the present invention
- Figure 4 illustrates a perspective view of a, C-shaped purlin according to an embodiment of the present invention
- Figures 5-10 illustrate end views of Z-shaped purlins according to alternative embodiments of the present invention.
- Figures 1 1-14 illustrate comparative graphs of span distance (mm) vs torsional strength (kN/m) for a prior art purlin and the structural element of the present invention. Detailed Description of the Drawings.
- FIG. 1 and 2 there is illustration a Z-shaped purlin 10 according to an embodiment of the present invention.
- the purlin 10 comprises a web 11, a first flange 12 extending outwardly from a first end of the web 11 in a first direction, and a second flange 13 extending outwardly from a second end of the web 11 in a second direction.
- the first flange 12 and the second flange 13 extend outwardly from the web 11 substantially parallel to one another but in opposite directions.
- the width of the first flange 12 is less than the width of the second flange 13, thereby facilitating easy stacking, storage, transportation and use of the purlins 10.
- the first flange 12 is provided with a lip 14 extending from an end of the first flange 12 furthest from the web 1 1.
- the lip 14 is disposed at an included angle ⁇ ] of about 90° to the first flange 12.
- the second flange 13 is provided with a lip 15 extending from an end of the second flange 13 furthest from the web 11.
- the lip 15 is disposed at an included angle ⁇ 2 of between 90° and 180° to the second flange 13.
- the web 11 is provided with a first channel 16 extending into the web 11 in a first direction, and a second channel 17 extending into the web 11 in a second direction opposite to the first direction.
- the first channel 16 and second channel 17 are substantially U-shaped channels in the web 11 that extend continuously along the entire length of the web 1 1.
- the first channel 16 and the second channel 17 are spaced apart from one another by a portion of the height of the web 11.
- the first channel 16 is located in a first portion of the web 11 between the middle 18 of the height of the web 11 and the second flange 13, while the second channel 17 is located in a second portion of the web 11 between the middle 18 of the height of the web 1 1 and the first flange 12.
- the purlin 20 comprises a web 21 , a first flange 22 extending outwardly from a first end of the web 21 in a first direction, and a second flange 23 extending outwardly from a second end of the web 21 in substantially the same direction as the first flange 22, such that the first flange 22 and the second flange 23 extend substantially parallel to one another.
- the first flange 22 is provided with a lip 24 extending from an end of the first flange 22 furthest from the web 21.
- the lip 24 is disposed at an included angle ⁇ of about 90° to the first flange 22.. ' : -
- the second flange 23 is provided with a lip 25 extending from an end of the second flange 23 furthest from the web 21.
- the lip 25 is also disposed at an included angle ⁇ 2 of about 90° to the second flange 23..
- the web 21 is provided with a first channel 26 extending into the web 21 in a first direction, and a second channel 27 extending into the web 21 in the same direction as the first channel 26.
- the first channel 26 and second channel 27 are substantially U- shaped channels in the web 21 that extend along the entire length of the web 21.
- the first channel 26 and the second channel 27 are spaced apart from one another by a portion of the height of the web 21.
- the first channel 26 is located in a first portion of the web 21 between the middle 28 of the height of the web 21 and the second flange 23, while the second channel 27 is located in a second portion of the web 21 between the middle 29 of the height of the web 21 and the first flange 22.
- FIG 5 there is shown a Z-shaped purlin 30 according to an alternative embodiment of the present invention.
- the purlin 30 is very similar to that illustrated in Figures 1 and 2 with the exception that a first lip 1 is provided with a lip return 32 extending from the end of the lip 31 furthest from a first flange 33.
- a second lip 34 extends from a second flange 35, the second lip 34 being curved along a portion of its length.
- the inner radius of the curve 36 is located on the side of the lip 34 furthest from the web 37.
- FIG 7 a similar purlin 30 to that illustrated in Figure 6 is shown, with the exception that the lip 31 extending from the first flange 33 is curved along a portion of its length. In this embodiment the inner radius of the curve 38 is located on the side of the lip 31 closest to the web 37.
- FIG 8 there is shown a Z-shaped purlin 30 that is very similar to that shown in Figure 6, with the exception that the second lip 34 is provided with a more pronounced curve therein.
- a purlin 30 is illustrated in which the first lip 31 is provided with a lip return 32 that extends from the end of the lip 31 furthest from the first flange 33.
- the lip return 32 while similar to that illustrated in Figures 5 and 6, extends at an even more obtuse angle from the lip 31 than the lip returns shown in Figures 5 and 6.
- the second lip 34 is a substantially linear lip, and is provided with a lip return 39 that extends at an acute angle to the lip 34, such that the lip return 39 extends in a direction generally towards the web 37.
- the purlin 30 of Figure 10 is very similar to that shown in Figure 6, with the exception that the second lip 34 is substantially linear and is provided with a lip return 39.
- the lip return 39 extends from the second lip 34 in a direction that is substantially parallel to the second flange 35. Further, the lip return 39 extends in a direction towards the web 37.
- FIGs 11-14 there is illustrated graphs of span distance (mm) vs torsional strength (kN/m) for a prior art purlin and the structural element of the present invention.
- Figure 1 a comparison between the torsional strength of the prior art purlin (represented by the grey column) and the torsional strength of a purlin of the present invention (represented by the white column) is shown wherein no pieces of bridging are located between spaced apart purlins. It will be noted in this Figure that, across all span distances, the torsional strength of the purlin of the present invention is greater than that of the prior art purlin.
- the major advantage of the present invention is that, due to the position and orientation of the channels in the web, the load-bearing properties of the purlins are significantly improved over conventional purlin designs.
- the relatively simple cross-section of the purlins of the present invention ensure the cost of materials, as well as the cost and complexity of manufacturing the purlins, are relatively low.
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Joining Of Building Structures In Genera (AREA)
- Rod-Shaped Construction Members (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2010324521A AU2010324521B2 (en) | 2009-11-27 | 2010-11-16 | Structural element |
US13/512,437 US20120266562A1 (en) | 2009-11-27 | 2010-11-16 | Structural element |
NZ600216A NZ600216A (en) | 2009-11-27 | 2010-11-16 | Structural element |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2009905821A AU2009905821A0 (en) | 2009-11-27 | Structural Element | |
AU2009905821 | 2009-11-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2011063447A1 true WO2011063447A1 (en) | 2011-06-03 |
Family
ID=44065727
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/AU2010/001534 WO2011063447A1 (en) | 2009-11-27 | 2010-11-16 | Structural element |
Country Status (4)
Country | Link |
---|---|
US (1) | US20120266562A1 (en) |
AU (1) | AU2010324521B2 (en) |
NZ (2) | NZ600216A (en) |
WO (1) | WO2011063447A1 (en) |
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US20220372758A1 (en) * | 2021-05-24 | 2022-11-24 | Super Stud Building Products, Inc. | Isolated Resilient Channel |
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US8833025B2 (en) * | 2011-01-04 | 2014-09-16 | Advanced Architectural Products, Llc | Polymer-based bracket system for exterior cladding |
US9249622B1 (en) * | 2013-09-18 | 2016-02-02 | Premium Garage Door Hardware Inc. | Garage door track with inwardly hemmed sidewall, and reinforcing ribs to reduce the incidence of rollout |
US10316509B2 (en) | 2017-04-03 | 2019-06-11 | Revamp Panels, LLC | Post and beam system |
US20190323282A1 (en) * | 2018-04-18 | 2019-10-24 | Assa Abloy Entrance Systems Ab | Strut for windload door |
US11622627B2 (en) * | 2020-01-30 | 2023-04-11 | International Technical Coatings, Inc. | Method and apparatus for flange clip for support channel |
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DE202006008668U1 (en) * | 2006-05-30 | 2006-09-07 | Richter-System Gmbh & Co. Kg | Sheet metal profile for dry construction systems has two arm sections connected by base section with reinforcement strips extending over entire width of supporting edges at free ends of arms |
US8499512B2 (en) * | 2008-01-16 | 2013-08-06 | California Expanded Metal Products Company | Exterior wall construction product |
US8056303B2 (en) * | 2009-05-06 | 2011-11-15 | Frobosilo Raymond C | Non load-bearing metal wall stud having increased strength |
-
2010
- 2010-11-16 US US13/512,437 patent/US20120266562A1/en not_active Abandoned
- 2010-11-16 NZ NZ600216A patent/NZ600216A/en unknown
- 2010-11-16 WO PCT/AU2010/001534 patent/WO2011063447A1/en active Application Filing
- 2010-11-16 AU AU2010324521A patent/AU2010324521B2/en active Active
- 2010-11-16 NZ NZ627155A patent/NZ627155A/en unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1997876A (en) * | 1929-04-17 | 1935-04-16 | William O Sheldon | Metal lumber |
US4329824A (en) * | 1979-12-12 | 1982-05-18 | Lowe Colin F | Sheet metal beam |
GB2319790A (en) * | 1996-11-29 | 1998-06-03 | Kingspan Res & Dev Ltd | Structural element, e.g. purlin |
EP1344876A2 (en) * | 2002-03-14 | 2003-09-17 | Wuppermann Staba GmbH | Purlin and purlin support |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20220372758A1 (en) * | 2021-05-24 | 2022-11-24 | Super Stud Building Products, Inc. | Isolated Resilient Channel |
Also Published As
Publication number | Publication date |
---|---|
NZ600216A (en) | 2014-07-25 |
AU2010324521B2 (en) | 2016-05-05 |
US20120266562A1 (en) | 2012-10-25 |
AU2010324521A1 (en) | 2012-06-14 |
NZ627155A (en) | 2015-11-27 |
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