GB2085506A - Insulated roof - Google Patents

Insulated roof Download PDF

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Publication number
GB2085506A
GB2085506A GB8130246A GB8130246A GB2085506A GB 2085506 A GB2085506 A GB 2085506A GB 8130246 A GB8130246 A GB 8130246A GB 8130246 A GB8130246 A GB 8130246A GB 2085506 A GB2085506 A GB 2085506A
Authority
GB
United Kingdom
Prior art keywords
portions
purlins
beams
roof structure
support elements
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
GB8130246A
Other versions
GB2085506B (en
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.)
Voestalpine Metsec PLC
Original Assignee
Voestalpine Metsec PLC
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 Voestalpine Metsec PLC filed Critical Voestalpine Metsec PLC
Priority to GB8130246A priority Critical patent/GB2085506B/en
Publication of GB2085506A publication Critical patent/GB2085506A/en
Application granted granted Critical
Publication of GB2085506B publication Critical patent/GB2085506B/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
    • E04D13/16—Insulating devices or arrangements in so far as the roof covering is concerned, e.g. characterised by the material or composition of the roof insulating material or its integration in the roof structure
    • E04D13/1606—Insulation of the roof covering characterised by its integration in the roof structure
    • E04D13/1612—Insulation of the roof covering characterised by its integration in the roof structure the roof structure comprising a supporting framework of roof purlins or rafters
    • E04D13/1625—Insulation of the roof covering characterised by its integration in the roof structure the roof structure comprising a supporting framework of roof purlins or rafters with means for supporting the insulating material between the purlins or rafters
    • 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
    • E04D—ROOF COVERINGS; SKY-LIGHTS; GUTTERS; ROOF-WORKING TOOLS
    • E04D13/00—Special arrangements or devices in connection with roof coverings; Protection against birds; Roof drainage ; Sky-lights
    • E04D13/16—Insulating devices or arrangements in so far as the roof covering is concerned, e.g. characterised by the material or composition of the roof insulating material or its integration in the roof structure
    • E04D13/1606—Insulation of the roof covering characterised by its integration in the roof structure
    • E04D13/1612—Insulation of the roof covering characterised by its integration in the roof structure the roof structure comprising a supporting framework of roof purlins or rafters
    • E04D13/1618—Insulation of the roof covering characterised by its integration in the roof structure the roof structure comprising a supporting framework of roof purlins or rafters with means for fixing the insulating material between the roof covering and the upper surface of the roof purlins or rafters
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Roof Covering Using Slabs Or Stiff Sheets (AREA)

Abstract

A roof structure having a covering comprising an inner lining 26, an insulating intermediate layer 27 and an external cladding 29 which are superimposed upon one another and are supported on a structural framework of beams or purlins 1, incorporates support elements of channel section, said support elements having bearing surfaces 12 which engage the upper surfaces of the beams or purlins, a pair of outwardly directed flange portions 13 positioned below the bearing surface for supporting the inner lining and insulating layers, and a spacing portion 11 positioned above the bearing surfaces for supporting the external cladding. <IMAGE>

Description

SPECIFICATION Roof structures This invention relates to roof structures and in particular to means for supporting the roof cladding and insulating layers.
The invention is primarily concerned with roof structures in which a covering comprising an inner lining, an insulating layer and external cladding, which are superimposed upon one another, are supported on a structural framwork of beams or purlins. Hitherto the covering has rested upon the upper surface of the beams or purlins and in order to obtain a roof of acceptable firmness, it has been necessary to restrict the thickness of the insulating layer that can be used.
The present invention provides a system by means of which the insulating layer can be supported at a level below the upper surface of the beams of purlins and also provide a rigid support for the external cladding, so that the latter may be firmly secured without compressing the insulating layer to an undesirable degree.
According to one aspect the present invention provides a roof structure having a covering comprising an inner lining, an insulating intermediate layer and an external cladding which are superimposed upon one another and are supported on a structural framework of beams or purlins, a channel section support element being located over each of the beams or purlins longitudinally thereof, each of said support elements comprising a web portion which acts as a support for the external cladding and a pair of wall portions, said wall portions defining a pair of co-planar outwardly directed marginal flange portions which depend below the upper surface of the beam or purlin and form a support for the internal lining and roof insulating layers, a pair of intermediate bearing surfaces positioned above the plane of the flanges and inwardly thereof which abut the upper surface of the beam or purlin, and central spacing portion above the upper surface of the beam or purlin.
According to a further aspect of the present invention a support element for an insulated roof structure, of the form defined hereinbefore, comprises a channel section having a web portion and a pair of wall portions, said wall portions defining a pair of co-planar outwardly directed marginal flange portions, a pair of bearing surfaces positioned intermediate of the plane of the flange portions and the web portion and inwardly of the flange portions and a central spacing portion on the opposite side of the bearing surfaces from the flange portions.
In use the support element is positioned on top of a structural beam or purlin, so that its bearing surfaces engage the upper surface of the beam or purlin and its flange portions extend outwardly on either side of the beam or purlin, at a level below its upper surface. In this manner internal lining boards may be laid between the beam or purlins, supported along opposite edges by the flange portions of the support elements. Sheets of insulation may be laid upon the internal lining boards. The space above the beams or purlins and between adjacent sheets of insulation, will then be filled by the central portion of the support element and the upper surface of this central spacing portion will form a support for the external cladding of the roof.A relatively thin layer of insulating material may be positioned between the web portion which forms the upper surface of the central portion of the support element and the outer cladding in order to avoid a cold spot at this point.
The support element according to the present invention may be secured to a beam or purlin by a suitable fastening means, for example the support element may be secured by means of screws, rivets or similar fastening means which pass through the wall portions of the support element between the flange portions and the bearing surfaces and into or through the adjacent portions of the beams or purlins. Alternatively the support elements may be clipped on to the beams or purlins and inter-engaging formations, for example ribs and grooves, may be provided for this purpose.Where the support elements are mechanically secured to the beams or purlins, the external cladding may be secured to the support elements by suitable means, but where the support elements are merely clipped to the beams or purlins, the external cladding must be secured to the beams or purlins thereby clamping the support elements in position.
One embodiment of the invention is now described, by way of example only, with reference to the accompanying drawings, in which: Figures 1 shows a perspective view of a support element in accordance with the present invention; and Figure 2 shows a part sectional view of a roof structure incorporating the support element illustrated in Figure 1.
As shown in Figure 1 , the support element 10 comprises a cold rolled metal channel section having a double rectangular cross-section. The closed end of the channel section, which forms the central spacer portion 11 of the support element 10 is narrower than the open end of the channel section, so that longitudinal shoulder portions are provided, these shoulder portions acting as bearing surfaces 12 for the support element 10.
The longitudinal edges of the channel section are provided with co-planar outwardly directed flanges 13.
Longitudinal ribs 14 are provided in the wall portions 1 5 between the bearing surfaces 12 and the flange portions 1 3 The end surface 1 6 of the spacer portion 11 is recessed so that a pair of longitudinal ridge portions 17 are formed along each edge of the surface 16.
As illustrated in Figure 2 a roof support structure is formed from a plurality of parallel Z-purlins 21 which are supported on a suitable structure (not shown). A support element 10, as described above is placed over the upper surface 20 of each of the purlins 21, so that the bearing surfaces 12, engage the upper surface of the top flange 21. The ribs 14 on the support element engage, on one side, the longitudinal edge of the lip 23 of the purlin 21 and, on the other side, a corresponding longitudinal groove 24 in the web portion 25 of the purlin 21 in order to provide a positive location of the support element 10 on the purlin 21, during construction of the roof. Internal lining boards 26 are placed between the purlins 21 so that they are supported at opposite edges by the flange portions 13 of adjacent support elements 10.Sheets 27 of insulating material are then placed upon the upper surface of the internal lining boards 26 so that they project above the level of the upper flange 22 of the purlin 21. The space above the purlins 21 and between adjacent sheets of insulation 27 is filled by the spacer portion 11 of the support element 10. A thin strip of insulating material 28 is placed along the recessed upper surface 16 of the spacer portion 11 and the outer cladding 29 of the roof is supported upon the ridge portion 1 7 of the upper surface 1 6 of the support element 10. The outer cladding 29 of the roof is secured by suitable means (not shown) to the purlin 21, thereby clamping the support elements 10 to the purlins 21. One suitable method of securing the outer cladding 29 to the purlins 21 would be to use selfdrilling screws which pass through the spacer portion 11 of the support element 10 into the upper flange 22 of the purlin 21. An alternative method would be to provide apertures in one of the web portions 15 of the support element 11 so that "J" bolts engaging the lip 23 of the purlin 21, may be used to secure the outer cladding 29 to the purlin 21 in a conventional manner.

Claims (14)

1. A roof structure having a covering comprising an inner lining, an insulating intermediate layer and an external cladding which are superimposed upon one another and are supported on a structural framework of beams or purlins, a channel section support element being located over each of the beams or purlins longitudinally thereof, each of said support elements comprising a web portion which acts as a support for the external cladding and a pair of wall portions, said wall portions defining a pair of co-planar outwardly directed marginal flange portions which depend below the upper surface of the beam or purlin and form a support for the internal lining and roof insulating layers, a pair of intermediate bearing surfaces positioned above the plane of the flanges and inwardly thereof which abut the upper surface of the beam or purlin, and a central spacing portion above the upper surface of the beam or purlin.
2. A roof structure according to claim 1 in which the support elements are secured to their associated beams or purlins by fastening means which pass through the wall portions of the support elements, between the flange portions and the bearing surfaces, and into or through the adjacent portions of the beams or purlins.
3. A roof structure according to claim 2 in which the external cladding is secured to the support elements by suitable means.
4. A roof structure according to claim 1 in which complementary formations are provided on the support elements and the beams or purlins by means of which the support elements may be clipped over the beams or purlins.
5. A roof structure according to claim 4 in which longitudinal ribs or grooves are provided on the wall portions of the support elements between the flange portions and bearing surfaces and complementary formations are provided on the adjacent portions of the beams or purlins.
6. A roof structure according to claim 2,4 or 5 in which the external cladding is secured to the beams or purlins.
7. A roof structure according to claim 6 in which fastening means pass through the web portions of the support elements and into the upper surface of the beams or purl ins.
8. A roof structure according to claim 6 in which apertures are provided in one or both wall portions of the support elements, whereby fastening means for the external cladding may engage the side portions of the beams or purlins.
9. A roof structure according to any one of the preceding claims in which the web portions of the support elements are provided with a pair of longitudinal ridge portions, one along each edge, to support the external cladding, thereby forming a recessed portion in which insulation may be provided between the web and the external cladding.
1 0. A roof structure according to any one of the preceding claims in which the support elements are formed of metal by a cold rolling process.
11. A support element for an insulated roof structure of the form defined hereinbefore, comprising a channel section having a web portion and a pair of wall portions, said wall portions defining a pair of co-planar outwardly directed marginal flange portions, a pair of bearing surfaces intermediate of the flange portions and web portions and inwardly of the flange portions, and a central spacing portion on the opposite side of the bearing surfaces from the flange portions.
12. A support element according to claim 11 in which formations are provided in the wall portions between the flange portions and the bearing surfaces which may engage corresponding formations on a beam or purlin, so that the support element may be clipped thereto.
1 3. A support element according to claim 12 in, which longitudinal ribs or grooves are provided in the walls of the support element, between the bearing surfaces and the flange portions.
14. A support element according to any one of claims 11 to 13 in which longitudinal ridge portions are provided along each edge of the web portion thereby forming a central recessed portion.
1 5. A support element according to any one of claims 11 to 14 made from cold rolled metal.
1 6. A roof structure substantially as described herein with reference to, and as shown in Figure 2.
1 7. A support element for a roof structure of the form defined hereinbefore, substantially as described herein with reference to, and as shown in Figures 1 and 2.
GB8130246A 1980-10-08 1981-10-07 Insulated roof Expired GB2085506B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8130246A GB2085506B (en) 1980-10-08 1981-10-07 Insulated roof

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8032349 1980-10-08
GB8130246A GB2085506B (en) 1980-10-08 1981-10-07 Insulated roof

Publications (2)

Publication Number Publication Date
GB2085506A true GB2085506A (en) 1982-04-28
GB2085506B GB2085506B (en) 1984-11-28

Family

ID=26277136

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8130246A Expired GB2085506B (en) 1980-10-08 1981-10-07 Insulated roof

Country Status (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2137251A (en) * 1983-03-25 1984-10-03 New Zealand Guardian Trust Com Insulating panel
GB2254088A (en) * 1991-03-28 1992-09-30 Redland Plasterboard Ltd Floating floor

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2137251A (en) * 1983-03-25 1984-10-03 New Zealand Guardian Trust Com Insulating panel
GB2254088A (en) * 1991-03-28 1992-09-30 Redland Plasterboard Ltd Floating floor

Also Published As

Publication number Publication date
GB2085506B (en) 1984-11-28

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Legal Events

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

Effective date: 19931007