GB1566702A - Purlins - Google Patents

Purlins Download PDF

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Publication number
GB1566702A
GB1566702A GB679079A GB679079A GB1566702A GB 1566702 A GB1566702 A GB 1566702A GB 679079 A GB679079 A GB 679079A GB 679079 A GB679079 A GB 679079A GB 1566702 A GB1566702 A GB 1566702A
Authority
GB
United Kingdom
Prior art keywords
web portion
flanges
thickness
purlin
figures
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.)
Expired
Application number
GB679079A
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.)
TI METSEC Ltd
Original Assignee
TI METSEC 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 TI METSEC Ltd filed Critical TI METSEC Ltd
Priority to GB679079A priority Critical patent/GB1566702A/en
Publication of GB1566702A publication Critical patent/GB1566702A/en
Expired legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • 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
    • E04C2003/0408—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by assembly or the cross-section
    • E04C2003/0413—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects characterised by assembly or the cross-section being built up from several parts
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/04—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal
    • E04C2003/0404—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal beams, girders, or joists characterised by cross-sectional aspects
    • E04C2003/0426—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
    • E04C2003/0452—H- or I-shaped

Landscapes

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

Description

(54) PURLINS (71) We, TI MErSEC LIMITED, a British Company, of Binningham Road, Oldbury, Warley, Worcestershire B69 4HE, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement: This invention relates to purlins which are used to support the roof claddings of buildings, the object of the invention being to vide such a purlin in an approved form. The subject matter of the application is divided from our Application No. 39645/75 (Serial No. 1566701) filed 27th September 1975.
In accordance with the invention there is provided a purlin formed from a single piece of metal and having a pair of flanges which are interconnected by a web portion, characterised in that the thickness of said web portion is less than the thickness of each of said flanges, and in that said web portion is formed with a plurality of stiffening ribs of corrugations which extend transversely across the depth of said web portion between the two flanges.
The flanges may respectively extend from said web portion in opposite directions or in the same direction.
The invention will now be more particularly described with reference to the drawings accompanying the Provisional Specification.
Referring then to Figures 1 and 2 of the drawings accompanying the Provisional Spe cification, the purlin shown therein is formed from a single piece of metal which is bent to provide two flanges 10 and 11 and a web portion 12. The two flanges 10 and 11 extend respectively from opposite sides of the web portion 12 and moreover each flange is bent along its outer edge to form a lip having a free edge lOa or lla The thickness of each flange is indicated in Figure 1 by reference 13 and the thickness of the web portion is indicated in Figure 2 by reference 14 and it will be seen that the latter thickness is less than the former thickness. This difference in the two thicknesses is conveniently achieved by bending the piece of metal so as to form each flange with a double thickness of material.Moreover the web 12 is formed with corrugations as indicated by reference 15 which extend transversely across the depth of the web portion between the two flanges.
In the embodiment shown in Figures 3 and 4 of the drawings accompanying the Provisional Specification, the purlin again comprises a web portion 16 and two flanges 17 and 18 which extend from opposite sides of the web portion and again the thickness of the web portion is less than the thickness of each flange. In this case the web portion is formed with a plurality of spaced stiffening ribs 19 which also extend transversely across the depth of the web portion between the two flanges.
In the embodiment shown in Figures 5 and 6 of the drawings accompanying the Provisional Specification, the purlin also comprises a web portion 20 and two flanges 21 and 22, the thickness of the web portion being less than the thickness of each flange.
In this case the web portion is formed with a plurality of stiffening ribs 23 of generally X-shaped configuration which extend across the depth of the web portion between the two flanges.
WHAT WE CLAIM IS:- 1. A purlin formed from a single piece of metal and having a pair of flanges which are interconnected by a web portion, charaterised in that the thickness of said web portion is less than the thickness of each of said flanges and in that said web portion is formed with a plurality of stiffening ribs or corrugations which extend transversely across the depth of said web portion between the two flanges.
**WARNING** end of DESC field may overlap start of CLMS **.

Claims (1)

  1. **WARNING** start of CLMS field may overlap end of DESC **.
    (54) PURLINS (71) We, TI MErSEC LIMITED, a British Company, of Binningham Road, Oldbury, Warley, Worcestershire B69 4HE, do hereby declare the invention, for which we pray that a patent may be granted to us, and the method by which it is to be performed, to be particularly described in and by the following statement: This invention relates to purlins which are used to support the roof claddings of buildings, the object of the invention being to vide such a purlin in an approved form. The subject matter of the application is divided from our Application No. 39645/75 (Serial No. 1566701) filed 27th September 1975.
    In accordance with the invention there is provided a purlin formed from a single piece of metal and having a pair of flanges which are interconnected by a web portion, characterised in that the thickness of said web portion is less than the thickness of each of said flanges, and in that said web portion is formed with a plurality of stiffening ribs of corrugations which extend transversely across the depth of said web portion between the two flanges.
    The flanges may respectively extend from said web portion in opposite directions or in the same direction.
    The invention will now be more particularly described with reference to the drawings accompanying the Provisional Specification.
    Referring then to Figures 1 and 2 of the drawings accompanying the Provisional Spe cification, the purlin shown therein is formed from a single piece of metal which is bent to provide two flanges 10 and 11 and a web portion 12. The two flanges 10 and 11 extend respectively from opposite sides of the web portion 12 and moreover each flange is bent along its outer edge to form a lip having a free edge lOa or lla The thickness of each flange is indicated in Figure 1 by reference 13 and the thickness of the web portion is indicated in Figure 2 by reference 14 and it will be seen that the latter thickness is less than the former thickness. This difference in the two thicknesses is conveniently achieved by bending the piece of metal so as to form each flange with a double thickness of material.Moreover the web 12 is formed with corrugations as indicated by reference 15 which extend transversely across the depth of the web portion between the two flanges.
    In the embodiment shown in Figures 3 and 4 of the drawings accompanying the Provisional Specification, the purlin again comprises a web portion 16 and two flanges 17 and 18 which extend from opposite sides of the web portion and again the thickness of the web portion is less than the thickness of each flange. In this case the web portion is formed with a plurality of spaced stiffening ribs 19 which also extend transversely across the depth of the web portion between the two flanges.
    In the embodiment shown in Figures 5 and 6 of the drawings accompanying the Provisional Specification, the purlin also comprises a web portion 20 and two flanges 21 and 22, the thickness of the web portion being less than the thickness of each flange.
    In this case the web portion is formed with a plurality of stiffening ribs 23 of generally X-shaped configuration which extend across the depth of the web portion between the two flanges.
    WHAT WE CLAIM IS:-
    1. A purlin formed from a single piece of metal and having a pair of flanges which are interconnected by a web portion, charaterised in that the thickness of said web portion is less than the thickness of each of said flanges and in that said web portion is formed with a plurality of stiffening ribs or corrugations which extend transversely across the depth of said web portion between the two flanges.
    2 A purlin substantially as hereinbefore described with reference to and as shown in Figures 1 and 2, or in Figures 3 and 4, or in Figures 5 and 6 of the drawings accompanying the Provisional Specification.
GB679079A 1976-09-22 1976-09-22 Purlins Expired GB1566702A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB679079A GB1566702A (en) 1976-09-22 1976-09-22 Purlins

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB679079A GB1566702A (en) 1976-09-22 1976-09-22 Purlins

Publications (1)

Publication Number Publication Date
GB1566702A true GB1566702A (en) 1980-05-08

Family

ID=9820812

Family Applications (1)

Application Number Title Priority Date Filing Date
GB679079A Expired GB1566702A (en) 1976-09-22 1976-09-22 Purlins

Country Status (1)

Country Link
GB (1) GB1566702A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2228752A (en) * 1989-02-02 1990-09-05 Steelpress Metal beam
EP0425952A1 (en) * 1989-11-02 1991-05-08 Gebr. Knauf Westdeutsche Gipswerke Sheet metal profile with groove
EP1251217A1 (en) 2001-04-19 2002-10-23 Danilo Giannini Beam for supports and relative method to obtain said beam

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2228752A (en) * 1989-02-02 1990-09-05 Steelpress Metal beam
EP0425952A1 (en) * 1989-11-02 1991-05-08 Gebr. Knauf Westdeutsche Gipswerke Sheet metal profile with groove
EP1251217A1 (en) 2001-04-19 2002-10-23 Danilo Giannini Beam for supports and relative method to obtain said beam

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Legal Events

Date Code Title Description
PS Patent sealed
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PE20 Patent expired after termination of 20 years

Effective date: 19960921