WO2004090251A1 - Roofing structure - Google Patents

Roofing structure Download PDF

Info

Publication number
WO2004090251A1
WO2004090251A1 PCT/AU2004/000495 AU2004000495W WO2004090251A1 WO 2004090251 A1 WO2004090251 A1 WO 2004090251A1 AU 2004000495 W AU2004000495 W AU 2004000495W WO 2004090251 A1 WO2004090251 A1 WO 2004090251A1
Authority
WO
WIPO (PCT)
Prior art keywords
truss
rafters
supported
support structure
chord
Prior art date
Application number
PCT/AU2004/000495
Other languages
French (fr)
Inventor
Martin Charles Holland
Original Assignee
Formsteel 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 Formsteel Pty Ltd filed Critical Formsteel Pty Ltd
Priority to AU2004228985A priority Critical patent/AU2004228985A1/en
Publication of WO2004090251A1 publication Critical patent/WO2004090251A1/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B7/00—Roofs; Roof construction with regard to insulation
    • E04B7/02—Roofs; Roof construction with regard to insulation with plane sloping surfaces, e.g. saddle roofs
    • E04B7/06—Constructions of roof intersections or hipped ends
    • E04B7/063—Hipped ends
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B7/00—Roofs; Roof construction with regard to insulation
    • E04B7/02—Roofs; Roof construction with regard to insulation with plane sloping surfaces, e.g. saddle roofs

Definitions

  • the present invention generally relates to a roofing structure.
  • the present invention relates to a support structure for a roof covering and the formation of trusses used within the support structure.
  • roofing structure typically comprises a support structure and a roof covering.
  • the support structure is built or is located upon the walls of a house to provide the general shape and pitch of the roof. It also provides the support upon which the roof covering is secured.
  • support structures There are several main types of support structures utilised in the building of modern day domestic houses. These types of structures can be made from metal, timber or a combination of both.
  • the support structure can be fabricated in part before being supplied to the site or may be made entirely on site from lengths of timber.
  • the typical roofing structure uses a roofing truss as an integral part of the support structure. These trusses provide the basic structural elements of the support structure.
  • a truss is typically triangular in shape having two rafters meeting at an apex to define an upper chord and a ceiling joist spanning from one end of the upper chord to the other to provide the triangular shape.
  • support members span between the upper chord and the ceiling joist.
  • the present invention provides a support structure for a roof, the support structure comprises
  • the at least one truss is positioned so as to be supported by load bearing walls of a building, the rafters are positioned so that a portion of each rafter is supported by the at least one truss, once the rafters are in place a plurality of underpurlins are attached to the rafters.
  • the present invention also provides a support structure for a roof, the support structure comprises
  • the at least one truss is placed so as to span between load bearing walls of a building, the ceiling joists are placed and secured to each truss such that they are also supported by the load bearing walls, the rafters are positioned so that a portion of each rafter is supported by the at least one truss, once the rafters are in place a plurality of underpurlins are attached to the rafters.
  • the present invention also provides a support structure for a roof, the support structure comprises
  • each truss is placed so as to span between load bearing walls of a building, the ceiling joists are placed and secured to at least one truss such that they are also supported by load bearing walls, the rafters are positioned so that a portion of one or more of the rafters is supported by the at least one intermediate truss, and an end of each rafter is supported by the at least one main truss, once the rafters are in place a plurality of underpurlins are attached to the rafters.
  • the present invention also provides a support structure for a roof, the support structure comprises
  • At least one intermediate truss a plurality of rafters supported on at least one truss
  • each truss is placed and secured to load bearing walls of a building, the rafters are positioned so that a portion of one or more rafters is supported by the at least one intermediate truss, and an end of each rafter is supported by the at least one main truss, once the rafters are in place a plurality of underpurlins are attached to the rafters.
  • the at least one intermediate truss may be smaller in height than the at least one main truss to provide the roof's pitch.
  • each truss is positioned along or substantially parallel to the longitudinal axis of the building.
  • each truss is positioned substantially vertical.
  • each truss is a truncated truss comprising an upper chord and a lower chord which are maintained in a spaced apart, parallel relationship.
  • the upper chord and lower chord are equal in length and their relationship is maintained using two end support members orientated perpendicular to each chord and spanning from opposed ends of the upper chord to corresponding ends on the lower chord, the truncated truss is further reinforced using a plurality of diagonal support members spanning between the two chords between the end support members.
  • the upper and lower chords are of different lengths, with their relationship maintained by two end support members, one being orientated perpendicular to each chord and the other being orientated at an angle to each chord, each end support spanning from opposed ends of the upper chord to corresponding ends on the lower chord, the truncated truss is further reinforced using a plurality of diagonal support members spanning between the two chords between the end support members.
  • the upper and lower chords are of different lengths, with their relationship maintained by two end support members, each being orientated at an angle to each chord, and spanning from opposed ends of the upper chord to corresponding ends on the lower chord, the truncated truss is further reinforced using a plurality of diagonal support members spanning between the two chords between the end support members.
  • the upper chord supports the rafters.
  • the lower chord is in engagement with the ceiling joists or walls of the building.
  • Truncated trusses provide support for the rafters, and can be constructed to the required length and height.
  • the number of truncated trusses required in a roof structure depends on the size and shape of the roof.
  • each truncated truss is secured across load-bearing walls before the rafters are secured across the truncated trusses.
  • ceiling joists may also span across the lower chord of each truss.
  • the use of a truncated truss obviates or minimises the need to have steel strutting beams, hangers, underpurlins, struts and ridges which are typically required in the construction of modern day support structures.
  • truncated trusses also removes the need to have valleys and hips incorporated within the roof configuration.
  • the construction of a support structure using truncated trusses is also a far more cost effective and quicker system than those conventionally used today.
  • truncated trusses in a support structure of a roof system allows the truss to be made in a factory and transported to the site. Where longer truncated trusses are required a series of truncated trusses may be joined end to end during construction of the support structure in order to achieve the required length.
  • truncated truss As the upper chord of the truncated truss does not need to align with the pitch of the roof the same size truncated truss can be used in many different roofing structures.
  • Using intermediate truncated trusses of a reduced height than the main tm ncated truss negates the need of additional supporting members, particularly at the hip end or a valley in a buildings roof system as the intermediate truss can provide support for rafters closer to the edge of the building owing to the truncated truss being of reduced height. This is also enhanced by using a truncated truss whereby the upper and lower chords are maintained in space apart relation by one or more end supports orientated at an angle to the chords.
  • the present invention also provides a truncated truss for use in a support structure of a roof system, the truncated truss comprising an upper chord and a lower chord, maintained in spaced apart, parallel relationship by a plurality of support members spanning between each chord.
  • the plurality of support members includes two end support members, one located at each end of the truncated truss and orientated perpendicular to each chord, each end support member spanning from one end of the upper chord to a corresponding end on the lower chord.
  • the present invention further provides a roof construction for a building comprising at least one truss and a plurality of rafters supported on the truss, the truss comprising an upper and lower chord, the lower chord being adapted to be supported on a load bearing part of the building, and the upper chord being adapted to support the rafters.
  • each rafter extends from the truss to another support such as a further truss or a load-bearing wall.
  • Figure 1 is a plan view of a support structure
  • Figure 2 is a front view of a truss of a first type supporting rafters
  • Figure 3 is a sectional view of part of a roof structure
  • Figure 4 is a sectional view of part of a roof structure at a hip end with a second type of truss.
  • the support structure comprises a plurality of trusses 13 supporting a plurality of rafters 15 which in turn support a plurality of underpurlins 17.
  • Each truss 13 comprises an upper chord 19 and a lower chord 21.
  • the upper chord 19 and lower chord 21 are equal in length and are in spaced apart, parallel relationship. This relationship is maintained by two end support members 23, orientated perpendicular to each chord and spanning from opposed ends of the upper chord 19 to corresponding ends of the lower chord 21.
  • Each truss 13 is further reinforced by a plurality of diagonal support members 25.
  • trusses 13 of the desired height are placed so as to span across load bearing walls in a substantially vertical orientation.
  • Ceiling joists 27 are then secured to each truss substantially perpendicular thereto, as shown in figure 3.
  • Rafters 15 are then placed across one or more trusses 13 such that a portion of the rafter 5 is supported thereon.
  • Figure 4 shows use of a second type of truss 13a wherein the upper chord 19 is shorter in length than the lower chord 21. As a result the end support member 23a is orientated at an angle to each chord 19, 21.
  • This type of truss is utilised to provide support to the roof (not shown) at the hip end of a roofing structure. Modifications and variations such as would be apparent to the skilled ad ressee are considered to fall within the scope of the present invention.

Landscapes

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

Abstract

A support structure (11) for a roof , the support structure (11) comprising at least one main truss (13) and at least one intermediate truss (13). The support structure (11) also comprises a plurality of rafters (15) supported on at least one truss (13) and a plurality of ceiling joists (27) supported by at least one truss (13). Upon construction of a roof, each truss (13) is placed so as to span between load bearing walls of a building. The ceiling joists (27) are also placed and secured to at least one truss (13) such that they are also supported by load bearing walls. The rafters (15) are positioned so that a portion of one or more rafter (15) is supported by the at least one intermediate truss (13), and an end of each rafter (15) is supported by the at least one main truss (13). Once the rafters (15) are in place a plurality of underpurlins are attached to the rafters before the roof is secured thereto.

Description

"Roofing Structure"
Field of the Invention
The present invention generally relates to a roofing structure. In particular the present invention relates to a support structure for a roof covering and the formation of trusses used within the support structure.
Background Art
All modern domestic houses have a roofing structure which typically comprises a support structure and a roof covering. The support structure is built or is located upon the walls of a house to provide the general shape and pitch of the roof. It also provides the support upon which the roof covering is secured.
There are several main types of support structures utilised in the building of modern day domestic houses. These types of structures can be made from metal, timber or a combination of both.
The support structure can be fabricated in part before being supplied to the site or may be made entirely on site from lengths of timber. The typical roofing structure uses a roofing truss as an integral part of the support structure. These trusses provide the basic structural elements of the support structure.
A truss is typically triangular in shape having two rafters meeting at an apex to define an upper chord and a ceiling joist spanning from one end of the upper chord to the other to provide the triangular shape. In order to provide the truss with the required rigidity, support members span between the upper chord and the ceiling joist. Once the trusses are in place battens/underpurlins, typically made from timber or metal, are required to support each truss member and to provide the remaining sections of support structure. The main purpose of the trusses is to support the battens/underpurlins. The use of triangular trusses often results in inefficient use of time if the trusses are fabricated on site, and increases building cost as a result of the additional support members required to complete the support structure for the roof covering.
The preceding discussion of the background to the invention is intended only to facilitate an understanding of the present invention. It should be appreciated that the discussion is not an acknowledgement or admission that any of the material referred to was part of the common general knowledge in Australia as at the priority date of the application.
It is an object of this invention to provide a support structure which minimises the number of fabricated trusses and support members required in the construction of a roofing structure.
SUMMARY OF INVENTION
The present invention provides a support structure for a roof, the support structure comprises
at least one truss
a plurality of rafters supported on the at least one truss
wherein upon construction of a roof, the at least one truss is positioned so as to be supported by load bearing walls of a building, the rafters are positioned so that a portion of each rafter is supported by the at least one truss, once the rafters are in place a plurality of underpurlins are attached to the rafters.
The present invention also provides a support structure for a roof, the support structure comprises
at least one truss
a plurality of rafters supported on the at least one truss a plurality of ceiling joists supported by the at least one truss
wherein upon construction of a roof, the at least one truss is placed so as to span between load bearing walls of a building, the ceiling joists are placed and secured to each truss such that they are also supported by the load bearing walls, the rafters are positioned so that a portion of each rafter is supported by the at least one truss, once the rafters are in place a plurality of underpurlins are attached to the rafters.
The present invention also provides a support structure for a roof, the support structure comprises
at least one main truss
at least one intermediate truss
a plurality of rafters supported on at least one truss
a plurality of ceiling joists supported by at least one truss
wherein upon construction of a roof, each truss is placed so as to span between load bearing walls of a building, the ceiling joists are placed and secured to at least one truss such that they are also supported by load bearing walls, the rafters are positioned so that a portion of one or more of the rafters is supported by the at least one intermediate truss, and an end of each rafter is supported by the at least one main truss, once the rafters are in place a plurality of underpurlins are attached to the rafters.
The present invention also provides a support structure for a roof, the support structure comprises
at least one main truss
at least one intermediate truss a plurality of rafters supported on at least one truss
wherein upon construction of a roof, each truss is placed and secured to load bearing walls of a building, the rafters are positioned so that a portion of one or more rafters is supported by the at least one intermediate truss, and an end of each rafter is supported by the at least one main truss, once the rafters are in place a plurality of underpurlins are attached to the rafters.
The at least one intermediate truss may be smaller in height than the at least one main truss to provide the roof's pitch.
Preferably each truss is positioned along or substantially parallel to the longitudinal axis of the building.
Preferably each truss is positioned substantially vertical.
Preferably each truss is a truncated truss comprising an upper chord and a lower chord which are maintained in a spaced apart, parallel relationship.
According to one aspect of the truncated truss, the upper chord and lower chord are equal in length and their relationship is maintained using two end support members orientated perpendicular to each chord and spanning from opposed ends of the upper chord to corresponding ends on the lower chord, the truncated truss is further reinforced using a plurality of diagonal support members spanning between the two chords between the end support members.
According to a second aspect of the truncated truss, the upper and lower chords are of different lengths, with their relationship maintained by two end support members, one being orientated perpendicular to each chord and the other being orientated at an angle to each chord, each end support spanning from opposed ends of the upper chord to corresponding ends on the lower chord, the truncated truss is further reinforced using a plurality of diagonal support members spanning between the two chords between the end support members. According to a third aspect of the truncated truss, the upper and lower chords are of different lengths, with their relationship maintained by two end support members, each being orientated at an angle to each chord, and spanning from opposed ends of the upper chord to corresponding ends on the lower chord, the truncated truss is further reinforced using a plurality of diagonal support members spanning between the two chords between the end support members.
Preferably the upper chord supports the rafters.
Preferably the lower chord is in engagement with the ceiling joists or walls of the building.
Truncated trusses provide support for the rafters, and can be constructed to the required length and height. The number of truncated trusses required in a roof structure depends on the size and shape of the roof. When constructing the support structure each truncated truss is secured across load-bearing walls before the rafters are secured across the truncated trusses. In some applications, ceiling joists may also span across the lower chord of each truss. The use of a truncated truss obviates or minimises the need to have steel strutting beams, hangers, underpurlins, struts and ridges which are typically required in the construction of modern day support structures. In some cases the use of truncated trusses also removes the need to have valleys and hips incorporated within the roof configuration. The construction of a support structure using truncated trusses is also a far more cost effective and quicker system than those conventionally used today.
Utilising truncated trusses in a support structure of a roof system allows the truss to be made in a factory and transported to the site. Where longer truncated trusses are required a series of truncated trusses may be joined end to end during construction of the support structure in order to achieve the required length.
As the upper chord of the truncated truss does not need to align with the pitch of the roof the same size truncated truss can be used in many different roofing structures. Using intermediate truncated trusses of a reduced height than the main tm ncated truss negates the need of additional supporting members, particularly at the hip end or a valley in a buildings roof system as the intermediate truss can provide support for rafters closer to the edge of the building owing to the truncated truss being of reduced height. This is also enhanced by using a truncated truss whereby the upper and lower chords are maintained in space apart relation by one or more end supports orientated at an angle to the chords.
The present invention also provides a truncated truss for use in a support structure of a roof system, the truncated truss comprising an upper chord and a lower chord, maintained in spaced apart, parallel relationship by a plurality of support members spanning between each chord.
Preferably the plurality of support members includes two end support members, one located at each end of the truncated truss and orientated perpendicular to each chord, each end support member spanning from one end of the upper chord to a corresponding end on the lower chord.
The present invention further provides a roof construction for a building comprising at least one truss and a plurality of rafters supported on the truss, the truss comprising an upper and lower chord, the lower chord being adapted to be supported on a load bearing part of the building, and the upper chord being adapted to support the rafters.
Typically each rafter extends from the truss to another support such as a further truss or a load-bearing wall.
Description of the Drawings
The invention will be better understood by reference to the following description of an embodiment thereof as shown in the accompanying drawings in which:
Figure 1 is a plan view of a support structure; Figure 2 is a front view of a truss of a first type supporting rafters;
Figure 3 is a sectional view of part of a roof structure; and
Figure 4 is a sectional view of part of a roof structure at a hip end with a second type of truss.
Best Mode(s) for Carrying out the Invention
Shown in figures 1 to 3, is a support structure 11 of a roof structure. The support structure comprises a plurality of trusses 13 supporting a plurality of rafters 15 which in turn support a plurality of underpurlins 17.
Each truss 13 comprises an upper chord 19 and a lower chord 21. In the type of truss 13 shown in figure 2, the upper chord 19 and lower chord 21 are equal in length and are in spaced apart, parallel relationship. This relationship is maintained by two end support members 23, orientated perpendicular to each chord and spanning from opposed ends of the upper chord 19 to corresponding ends of the lower chord 21. Each truss 13 is further reinforced by a plurality of diagonal support members 25.
In constructing a support structure 11 , trusses 13 of the desired height are placed so as to span across load bearing walls in a substantially vertical orientation. Ceiling joists 27 are then secured to each truss substantially perpendicular thereto, as shown in figure 3. Rafters 15 are then placed across one or more trusses 13 such that a portion of the rafter 5 is supported thereon.
Figure 4 shows use of a second type of truss 13a wherein the upper chord 19 is shorter in length than the lower chord 21. As a result the end support member 23a is orientated at an angle to each chord 19, 21. This type of truss is utilised to provide support to the roof (not shown) at the hip end of a roofing structure. Modifications and variations such as would be apparent to the skilled ad ressee are considered to fall within the scope of the present invention.
Throughout the specification, unless the context requires otherwise, the word "comprise" or variations such as "comprises" or "comprising", will be understood to imply the inclusion of a stated integer or group of integers but not the exclusion of any other integer or group of integers.

Claims

The Claims Defining the Invention are as Follows
1. A support structure for a roof, the support structure comprises
at least one truss
a plurality of rafters supported on the at least one truss
wherein upon construction of a roof, the at least one truss is positioned so as to be supported by load bearing walls of a building, the rafters are positioned so that a portion of each rafter is supported by the at least one truss, once the rafters are in place a plurality of underpurlins are attached to the rafters.
2. A support structure for a roof, the support structure comprises
at least one truss
a plurality of rafters supported on the at least one truss
a plurality of ceiling joists supported by the at least one truss
wherein upon construction of a roof, the at least one truss is placed so as to span between load bearing walls of a building, the ceiling joists are placed and secured to each truss such that they are also supported by the load bearing walls, the rafters are positioned so that a portion of each rafter is supported by the at least one truss, once the rafters are in place a plurality of underpurlins are attached to the rafters.
3. A support structure for a roof, the support structure comprises
at least one main truss
at least one intermediate truss a plurality of rafters supported on at least one truss
a plurality of ceiling joists supported by at least one truss
wherein upon construction of a roof, each truss is placed so as to span between load bearing walls of a building, the ceiling joists are placed and secured to at least one truss such that they are also supported by load bearing walls, the rafters are positioned so that a portion of one or more of the rafters is supported by the at least one intermediate truss, and an end of each rafter is supported by the at least one main truss, once the rafters are in place a plurality of underpurlins are attached to the rafters.
4. A support structure for a roof, the support structure comprises
at least one main truss
at least one intermediate truss
a plurality of rafters supported on at least one truss
wherein upon construction of a roof, each truss is placed and secured to load bearing walls of a building, the rafters are positioned so that a portion of one or more rafters is supported by the at least one intermediate truss, and an end of each rafter is supported by the at least one main truss, once the rafters are in place a plurality of underpurlins are attached to the rafters.
5. A support structure according to claim 4 wherein the at least one intermediate truss is smaller in height than the at least one main truss so as to provide the roof's pitch.
6. A support structure according to claim 4 or 5 wherein each truss is positioned along or substantially parallel to the longitudinal axis of the building.
7. A support structure according to claim 4, 5 or 6 wherein each truss is positioned substantially vertical.
8. A support structure according to any one of the preceding claims wherei n each truss is a truncated truss comprising an upper chord and a lower chord maintained in a spaced apart, parallel relationship.
9. A support structure according to claim 8 wherein the upper chord and lower chord of the truncated truss are equal in length and their relationship is maintained using two end support members orientated perpendicular to each chord and spanning from opposed ends of the upper chord to corresponding ends on the lower chord, the truncated truss is further reinforced using a plurality of diagonal support members spanning between the two chords between the end support members.
10. A support structure according to claim 8 wherein the upper and lower chords of the truncated truss are of different lengths, with their relationship maintained by two end support members, one being orientated perpendicular to each chord and the other being orientated at an angle to each chord, each end support spanning from opposed ends of the upper chord to corresponding ends on the lower chord, the truncated truss is further reinforced using a plurality of diagonal support members spanning between the two chords between the end support members.
11. A support structure according to claim 8 wherein the upper and lower chords of the truncated truss are of different lengths, with their relationship maintained by two end support members, each being orientated at an angle to each chord, and spanning from opposed ends of the upper chord to corresponding ends on the lower chord, the truncated truss is further reinforced using a plurality of diagonal support members spanning between the two chords between the end support members.
12. A support structure according to any one of claims 8 to 11 wherein the upper chord supports the rafters.
13. A support structure according to any one of claims 8 to 12 wherein the lower chord is in engagement with the ceiling joists or walls of the building.
14. A truncated truss for use in a support structure of a roof system, the truncated truss comprising an upper chord and a lower chord maintained in spaced apart, parallel relationship by a plurality of support members spanning between each chord.
15. A truncated truss according to claim 14 wherein the plurality of support members includes two end support members, one located at each end of the truncated truss and orientated perpendicular to each chord, each end support member spanning from one end of the upper chord to a corresponding end on the lower chord.
16. A roof construction for a building comprising at least one truss and a plurality of rafters supported on the truss, the truss comprising an upper and lower chord, the lower chord being adapted to be supported on a load bearing part of the building, and the upper chord being adapted to support the rafters.
17. A roof construction for a building according to claim 16 wherein each rafter extends from the truss to another support such as a further truss or a load- bearing wall.
18. A support structure for a roof as substantially herein described with reference to the drawings.
19. A truncated truss as substantially herein described with reference to the drawings.
20. A roof construction for a building as substantially herein described with reference to the drawings.
PCT/AU2004/000495 2003-04-14 2004-04-14 Roofing structure WO2004090251A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU2004228985A AU2004228985A1 (en) 2003-04-14 2004-04-14 Roofing structure

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2003901775A AU2003901775A0 (en) 2003-04-14 2003-04-14 Roof structure
AU2003901775 2003-04-14

Publications (1)

Publication Number Publication Date
WO2004090251A1 true WO2004090251A1 (en) 2004-10-21

Family

ID=31500812

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU2004/000495 WO2004090251A1 (en) 2003-04-14 2004-04-14 Roofing structure

Country Status (2)

Country Link
AU (1) AU2003901775A0 (en)
WO (1) WO2004090251A1 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002021247A (en) * 2000-07-11 2002-01-23 Asahi Kasei Corp Roof truss of gable structure and method for constructing the same
JP2002030757A (en) * 2000-07-18 2002-01-31 Sumitomo Metal Ind Ltd Hipped roof for steel house and joint metal used therefor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2002021247A (en) * 2000-07-11 2002-01-23 Asahi Kasei Corp Roof truss of gable structure and method for constructing the same
JP2002030757A (en) * 2000-07-18 2002-01-31 Sumitomo Metal Ind Ltd Hipped roof for steel house and joint metal used therefor

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 2002 *

Also Published As

Publication number Publication date
AU2003901775A0 (en) 2003-05-01

Similar Documents

Publication Publication Date Title
US3256670A (en) Prefabricated steel joist adapted for the reinforcement of floors
CA2732480C (en) Adjustable hip-end purlin
EP2802717B1 (en) Lattice girder structure using innovative multiple joints for roof covering purposes
US16767A (en) Improved metallic roof
US20020020134A1 (en) Building truss structure
WO2004090251A1 (en) Roofing structure
AU2004228985A1 (en) Roofing structure
US20040211146A1 (en) Truss
Patel et al. Analysis and design of conventional industrial roof truss and compare it with tubular industrial roof truss
US20210189717A1 (en) Roof frame structure
WO2000053859A1 (en) Method and arrangement for assembling roof
EP3880904B1 (en) Loft conversion
EP2770131B1 (en) An Improved Roofing Arrangement
US3720033A (en) Roof building element and method of making a roof
EP1382766B1 (en) Kit for building composable trellis-like structures
US20210254337A1 (en) Extended roof truss with outboard purlins having load supporting k-trusses at extensions
Lawson New developments in use of cold formed steel in buildings
GB2363620A (en) Reinforced timber structural member
JP4694947B2 (en) Roof telescopic truss and roof structure
AU596293B2 (en) Roof truss
SU876908A1 (en) Roof panel
PL244337B1 (en) Roof beam unit
Bellamy The overall stability of masonry-walled buildings
JPH11343704A (en) Ridge structure of roof
Dannemann Recent Developments in Cold Formed Steel

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): BW GH GM KE LS MW MZ SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG

121 Ep: the epo has been informed by wipo that ep was designated in this application
WWE Wipo information: entry into national phase

Ref document number: 2004228985

Country of ref document: AU

ENP Entry into the national phase

Ref document number: 2004228985

Country of ref document: AU

Date of ref document: 20040414

Kind code of ref document: A

WWP Wipo information: published in national office

Ref document number: 2004228985

Country of ref document: AU

122 Ep: pct application non-entry in european phase