AU784897B2 - A light weight building material - Google Patents
A light weight building material Download PDFInfo
- Publication number
- AU784897B2 AU784897B2 AU16751/01A AU1675101A AU784897B2 AU 784897 B2 AU784897 B2 AU 784897B2 AU 16751/01 A AU16751/01 A AU 16751/01A AU 1675101 A AU1675101 A AU 1675101A AU 784897 B2 AU784897 B2 AU 784897B2
- Authority
- AU
- Australia
- Prior art keywords
- light weight
- structural member
- elongate structural
- corrugations
- weight elongate
- 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.)
- Ceased
Links
- 239000004566 building material Substances 0.000 title claims description 25
- 239000002184 metal Substances 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 10
- 238000005728 strengthening Methods 0.000 claims 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 2
- 238000007373 indentation Methods 0.000 claims 1
- 229910052742 iron Inorganic materials 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000003467 diminishing effect Effects 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Landscapes
- Rod-Shaped Construction Members (AREA)
Description
P/00/01 1 Regulation 3.2
AUSTRALIA
Patents Act 1990
ORIGINAL
COMPLETE SPECIFICATION STANDARD PATENT Invention Title: A light weight building material The following statement is a full description of this invention, including the best method of performing it known to us: FF14PSYX)'C\NATPIW12krN)175461 9 *1 CE01031000.9 1 A Light Weight Building Material Technical field of the invention The present invention generally relates to a building material, especially to a light weight building material for use in structural work.
Background of the invention With our forest fast diminishing, timber supply is e getting scarce and inconsistent in grade. This makes the cost of timber as a building material prohibitively high.
10 Over the years, building contractors and developers have been forced to look for alternative materials to reduce the cost of building construction. Many approaches have been eeooe proposed in the past to utilise light weight building material made from metal for structural works such as roof S 15 trusses or the likes, however until the present invention, the results have not been very encouraging. In many prior art practices, the truss members are formed from a U-shape section of a metal sheet. In one example, the ends of the legs of the U-section are tightly folded back to form a thick double edge. The top chords in prior art practices, are formed of inverted U-shaped sections having flanges projecting outwardly from the ends of each of the legs to provide greater rigidity.
One of the major difficulties with many of the prior art practices to manufacturing of metal roof trusses is that different components are used for bottom chords and CE01031000.9 2 the top chords resulting in that two different fabrication lines are required. Furthermore, two different stock items must be maintained in inventory. In addition, because of the flanges of the top chord members, it is necessary to provide for cutting the flanges off at least one of the top chords at the apex of the truss.
Due to the unfriendly U-shape of the building material, handling and working with the building material is rather difficult adding unnecessary cost to the construction. Strength and rigidity of the building material are also suspect. The present invention attempts to solve at least partially if not completely these problems.
The applicant does not concede that the prior art discussed in the specification forms part of the common general knowledge in the art at the priority date of this application.
Summary of the invention Accordingly, it is an object of the present invention to provide a light weight building material for use in structural work.
It is another object of the present invention to provide a light weight building material for use in structural work that has a considerable strength and rigidity.
r.
CE01031000.9 3 It is yet another object of the present invention to provide a light weight building material for use in structural work that is rust proof for long life.
According to an aspect of the present invention there is provided a light weight building material having a wall section wherein said wall section is a piece of metal sheet forming an endless wall.
Brief description of the drawings The present invention may be better understood from 10 reading of the following Detailed Description taken in conjunction with the accompanying drawings in which: Fig. 1 illustrates a light weight building material according to one embodiment of the present invention.
Fig. 2 illustrates a cross-sectional view of the light 15 weight building material.
Detailed description of the embodiments Referring now to Fig. 1 which illustrates a light weight building material according to one embodiment of the present invention and Fig. 2 which illustrates a cross-sectional view of the light weight building material. The light weight building material (1) comprises at least three walls, but unlike the U-section of the prior art, the present invention uses a triangular-section. However, a rectangular-section having four walls, a first wall a second wall (12) a third wall (13) and a fourth wall (14) is preferred.
Alternatively, a round section may also be used. The close section will eliminate the necessity to fold back to form the double edge for strength and rigidity of the prior art practice.
The light weight building material is formed .from a single piece of metal sheet, advantageously a galvanised mild steel sheet. The metal sheet is cut to size and rolled-formed to form the light weight building material'(1). This is a simple single run machining.
To form the light weight building material the ***metal sheet is first being provided with a first interlocking means (31) on one end and a second interlocking means (32) on the other end. As the metal sheet is rolled over the roll-forming machine, the first interlocking means (31) will mate the second interlocking means (32) to thereby formed the light weight building material To further strengthen the joint, rivets may be applied along the mating line of the interlocking means.
To further strengthen the light weight building material, the first and .second walls (11, 12) are provided with.a reinforcing means The reinforcing means may be a plurality of ribs or corrugations formed on the walls (11, 12) It will be understood by those skilled in the art that changes and modifications may be made to the invention without departing from the spirit and scope of the invention. Therefore it is intended that the foregoing description is merely for illustrative purposes and not intended to limit the spirit and scope of the invention in any way.
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Claims (16)
1. A light weight elongate structural member comprising a strip of sheet metal having longitudinal edges, the strip being formed into a closed hollow section with the longitudinal edges interlocked together, the closed hollow section having at least three walls, at least two of the walls being provided with a multiplicity of parallel strengthening ribs or corrugations which are aligned transverse to the length of the member.
2. A light weight elongate structural member as claimed in claim 1, wherein said closed shape is triangular. 10
3. A light weight elongate structural member as claimed in claim 1, wherein said o°: S closed shape is rectangular.
4. A light weight elongate structural member according to claim 3, comprising a top wall, a bottom wall, and opposing side walls, said parallel strengthening ribs or corrugations being formed in both of said side walls. 15
5. A light weight elongate structural member as claimed in claim 4, wherein the join in said longitudinal edges is located in either said top wall or said bottom wall.
6. A light weight elongate structural member as claimed in either of claims 4 or wherein said parallel strengthening ribs or corrugations do not extend the full height of the sidewalls and a strip of each side wall above and below the ribs or corrugations is a planar configuration.
7. A light weight elongate structural member as claimed in any of claims 1 to 6, wherein one said longitudinal edge is provided with a first interlocking means and the other said longitudinal edge is provided with a second interlocking means which enable said longitudinal edges to be joined together. 004868366 7
8. A light weight elongate structural member as claimed in claim 7, wherein said first interlocking means interlocks said second interlocking means to form said light weight building material.
9. A light weight elongate structural member as claimed claim 8, wherein the interlock between said first interlocking means and said second interlocking means is strengthened using a plurality of fasteners. A light weight elongate structural member as claimed in any of claims 1 to 9, wherein said multiplicity of parallel strengthening ribs or corrugations are aligned substantially perpendicular to the length of the member.
10
11. A light weight elongate structural member as claimed in any of claims 1 to I wherein said multiplicity of parallel strengthening ribs or corrugations are integrally formed in the member.
12. A light weight elongate structural member as claimed in any of claims 1 to wherein said multiplicity of parallel strengthening ribs or corrugations comprise indentations in the member.
13. A light weight elongate structural member as claimed in any of claims 1 to wherein said multiplicity of parallel strengthening ribs or corrugations are affixed to the member.
14. A light weight elongate structural member as claimed in any one of the preceding claims, wherein said strip of metal sheet is a galvanised iron sheet.
A roof truss comprised of a light weight elongate structural member according to any preceding claim.
16. A light weight elongate structural member substantially as herein described with reference to the accompanying drawings.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU16751/01A AU784897B2 (en) | 2001-01-31 | 2001-01-31 | A light weight building material |
| JP2001134917A JP2002327512A (en) | 2001-01-31 | 2001-05-02 | Lightweight building material |
| TW90110690A TW491922B (en) | 2000-04-04 | 2001-05-04 | A light weight building material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU16751/01A AU784897B2 (en) | 2001-01-31 | 2001-01-31 | A light weight building material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU1675101A AU1675101A (en) | 2002-08-01 |
| AU784897B2 true AU784897B2 (en) | 2006-07-20 |
Family
ID=3706661
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU16751/01A Ceased AU784897B2 (en) | 2000-04-04 | 2001-01-31 | A light weight building material |
Country Status (1)
| Country | Link |
|---|---|
| AU (1) | AU784897B2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1502688A (en) * | 1974-06-05 | 1978-03-01 | Scanovator Ab | Hollow elongate members |
| US5379567A (en) * | 1993-02-12 | 1995-01-10 | Vahey; Michael | Structural member |
-
2001
- 2001-01-31 AU AU16751/01A patent/AU784897B2/en not_active Ceased
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1502688A (en) * | 1974-06-05 | 1978-03-01 | Scanovator Ab | Hollow elongate members |
| US5379567A (en) * | 1993-02-12 | 1995-01-10 | Vahey; Michael | Structural member |
Also Published As
| Publication number | Publication date |
|---|---|
| AU1675101A (en) | 2002-08-01 |
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