EP1113116A2 - Pfosten und Aussenwand - Google Patents

Pfosten und Aussenwand Download PDF

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Publication number
EP1113116A2
EP1113116A2 EP00128698A EP00128698A EP1113116A2 EP 1113116 A2 EP1113116 A2 EP 1113116A2 EP 00128698 A EP00128698 A EP 00128698A EP 00128698 A EP00128698 A EP 00128698A EP 1113116 A2 EP1113116 A2 EP 1113116A2
Authority
EP
European Patent Office
Prior art keywords
web
flanges
stud
stud according
slots
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.)
Withdrawn
Application number
EP00128698A
Other languages
English (en)
French (fr)
Other versions
EP1113116A3 (de
Inventor
Jan Strömberg
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.)
Plannja AB
BPB Gyproc Nordic East AB
Original Assignee
BPB Ltd
Plannja AB
BPB Gyproc Nordic East AB
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 BPB Ltd, Plannja AB, BPB Gyproc Nordic East AB filed Critical BPB Ltd
Publication of EP1113116A2 publication Critical patent/EP1113116A2/de
Publication of EP1113116A3 publication Critical patent/EP1113116A3/de
Withdrawn legal-status Critical Current

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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
    • E04C3/08—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with apertured web, e.g. with a web consisting of bar-like components; Honeycomb girders
    • E04C3/09—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of metal with apertured web, e.g. with a web consisting of bar-like components; Honeycomb girders 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
    • 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
    • E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
    • E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
    • E04B2/74—Removable non-load-bearing partitions; Partitions with a free upper edge
    • E04B2/7407—Removable non-load-bearing partitions; Partitions with a free upper edge assembled using frames with infill panels or coverings only; made-up of panels and a support structure incorporating posts
    • E04B2/7409—Removable non-load-bearing partitions; Partitions with a free upper edge assembled using frames with infill panels or coverings only; made-up of panels and a support structure incorporating posts special measures for sound or thermal insulation, including fire protection
    • E04B2/7412—Posts or frame members specially adapted for reduced sound or heat transmission
    • 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
    • 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

  • This invention relates to a stud for exterior walls, made of bent sheet steel and comprising two parallel flanges and a slotted web between the flanges and a wall construction based on such studs.
  • Exterior walls in buildings with high demands on thermal insulation, for instance apartments and offices in cold climates are increasingly often made up of inner and outer boards screwed to C-shaped steel studs and fully insulated with mineral wool.
  • Typical wall thickness is 150- 300 mm.
  • the studs form thermal bridges which reduces the heat insulation.
  • the webs of the C-studs may be perforated with overlapping slots perpendicular to the thickness of the wall. That reduces the heat transfer typically 4 to 8 times.
  • a disadvantage with this perforation is that the strength and stiffness of the web are reduced, typically to 10-30 % of that of an unperforated web. This causes difficulties when screwing the boards to the stud. It may even make it necessary to use a thicker gauge steel than otherwise necessary, which increases the cold bridging and the costs.
  • This is achieved principally by a stud in which, in at least half the distance between the flanges, the web is retracted inwardly a distance that is between 1/3 and 2/3 of the of the width of the flanges, and the retracted portion of the web has overlapping longitudinal slots such that the transverse thermal transmission capability and the transverse bending stiffness of the stud are less than 1/3 of the corresponding values of a corresponding non-slotted web.
  • an inventive stud is both considerably stronger and considerably stiffer than an ordinary C-stud with the same weight. Further, the inventive studs can be packed to a volume for transportation and storing that is almost only half of the volume for ordinary C-studs
  • the sheet steel stud shown in cross section in Figure 1 is a wall stud for exterior walls. It is made of sheet steel with a thickness in the range of 0,75 to 2 mm. It has two flanges 12, 13 and an intermediate web 14-18. The web consists of two portions 14, 15 perpendicular to the flanges, two inclined portions 16, 17, and a central portion 18. The central portion 18 of the web has a great number of overlapping slots 19, as best appears from figure 7 which show slots that are cut without removal of material.
  • Figure 8 shows an alternative design with slots 19 in the form of punched elongated holes.
  • the slots reduce the heat transfer through the web by a factor 3 to 10 depending of the size and distance of the but in the same time they make the web both softer and weaker by bending also by a factor around 3 to 10; weaker the more the heat transfer is reduced.
  • the flanges 12, 13 have folded back edges 20, 21.
  • the edge 20 of the flange 12 is folded perpendicularly to the flange, whereas the edge 21 of the flange 13 is folded back.
  • the folding of the edges and the fact that the flange 12 is somewhat wider than the flange 13 makes it possible to put the studs two together in pairs as shown in figures 11 and 12. Such studs put together in pairs can then be piled into a transport package as seen in figure 13.
  • the central portion 18 of the web lies roughly on a line between the middle points of the flanges 12, 13, which is advantageous but not necessary which will be explained later.
  • the flange 13 lies within two normals that can be drawn from flange 12 at the corners of flange 12.
  • Figure 2 shows the situation when a board 23 is screwed with a piercing or self-drilling screw 22 pressing against the flange 13.
  • the shear centre 24 of the profile is close to the web 18 and close to the plane of the direction of the screw force. It means that there is almost no twisting of the profile and that the bending moment in the weakened web 18 is causing only minor deformations.
  • Figures 3 and 4 show the same as figure 1 and 2. The difference is that the flange 25 is turned the other way. The shear centre 27 is also then close to the web. The behaviour when screwing the board is the same as for the stud in figure 1.
  • Figure 5 shows a common C-stud with, through perforations, a weakened web 28.
  • the sheet steel thickness must be 1 mm or more due to the weak web and the difficulties to screw boards on such a profile.
  • Figure 6 shows the same stud when a board 23 is being screwed to it. Its shear centre 29 is located some centimetres outside the web.
  • the eccentricity of the force causes the profile to rotate away and the web to bend extensively. The drilling is difficult since the flange is not normal to the drilling point. Furthermore, there is a gap between the board and the flange at the drilling point and it is a risk that the gap is never closed.
  • Figures 11 and 12 show how studs can be put together in pairs.
  • One necessary condition is that one flange is at least two sheet thicknesses wider than the other.
  • Figure 12 shows two studs when being put together and explains why it is an advantage to fold the end stiffener of the narrower flange inwards.
  • C-studs can be piled in the same way. The difference appears in figure 12, where the studs are packed for stocking and transportation. Through the shape of the studs they can be packed twice as dense as C-studs can be. If the web portions 18 are pulled past the middle, these web portions will collide at attempts to put the profiles together according to Fig 11.
  • the web portions 18 are not extended to the middle of the profile, a distance between the web portions will appear when putting the profiles together according to Fig 11, which means that they will not be as compactly piled as is shown in Fig 13. This means that the portion 18 should be within a few mm, for example within 5 mm, from this line between the middle points of the flanges but not pass this line. It also appears from Fig 12 that the combined lengths of the web portions 14 and 15 shall not surpass the length of the web portion 18.
  • Figure 10 shows in a horizontal section an exterior wall in which double layers of wallboards, for example gypsum wallboards 31, 32, are attached to the flanges 12 of the studs by means of non-illustrated screws and double layers of wallboard 33,34 are attached to the flanges 13 in the same way.
  • double layers of wallboards for example gypsum wallboards 31, 32
  • the studs are vertical but they can also be used horizontally if they are fixed to brackets on pillars.
  • the webs perforated as in figures 7-9 are typically reducing the heat transfer 4-6 times and are typically 5-8 times softer for bending than an unperforated web.
  • the invention makes it possible to increase the perforations even more, to make the web up to 10 times softer, which may reduce the heat transfer down to 1/10 of the heat transfer of the unperforated web.
  • the flange stiffeners 20-21 may be folded in other angels than described.
  • the parts of the web adjacent to the flange 14-15 may be inclined and may even be eliminated so the inclined part 16-17 starts directly from the corner of the flange.
  • the flat middle part of the web 18 may be inclined for instance when the flanges are directed in different directions as in figure 3. It may also have unslotted areas and/or be stiffened by additional folds in the sheet steel with only minor influence on the heat transfer.
  • the invention is not limited to the shapes in figure 1 and 3 but covers also the above described alternative shapes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Building Environments (AREA)
  • Load-Bearing And Curtain Walls (AREA)
EP00128698A 1999-12-30 2000-12-29 Pfosten und Aussenwand Withdrawn EP1113116A3 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9904864 1999-12-30
SE9904864A SE9904864D0 (sv) 1999-12-30 1999-12-30 Väggregel av vikt tunnplåt

Publications (2)

Publication Number Publication Date
EP1113116A2 true EP1113116A2 (de) 2001-07-04
EP1113116A3 EP1113116A3 (de) 2003-07-09

Family

ID=20418379

Family Applications (2)

Application Number Title Priority Date Filing Date
EP00990161A Withdrawn EP1242697A1 (de) 1999-12-30 2000-12-29 Schalldämmende zwischenwand
EP00128698A Withdrawn EP1113116A3 (de) 1999-12-30 2000-12-29 Pfosten und Aussenwand

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP00990161A Withdrawn EP1242697A1 (de) 1999-12-30 2000-12-29 Schalldämmende zwischenwand

Country Status (5)

Country Link
EP (2) EP1242697A1 (de)
AU (1) AU2719901A (de)
NO (1) NO316327B1 (de)
SE (1) SE9904864D0 (de)
WO (1) WO2001049952A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1312725A1 (de) * 2001-11-19 2003-05-21 Rautaruukki OYJ Aussenwandpaneel und Aussenwand
EP3851760A1 (de) * 2020-01-16 2021-07-21 Carrier Corporation Isolierplatte für ein isoliertes luftstromgehäuse und isoliertes luftstromgehäuse mit einer solchen isolierplatte

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2007236561B2 (en) 2006-04-12 2012-12-20 James Hardie Technology Limited A surface sealed reinforced building element
ATE537309T1 (de) 2008-02-13 2011-12-15 Profilform As Rahmen für eine trockenbauwand
DE102009033916A1 (de) * 2009-07-20 2011-01-27 Saint-Gobain Rigips Austria Gesmbh Ständerelement sowie System für den Aufbau von Trennwänden

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2078276A (en) * 1980-06-12 1982-01-06 Expanded Metal Partition Stud
EP0080250A2 (de) * 1981-11-23 1983-06-01 Ayrshire Metal Products public limited company Pfetten
EP0342114A1 (de) * 1988-05-05 1989-11-15 Profilcometube Anordnung bestehend aus einer Aussenwand eines Gebäudes wie eine Dach- oder Fassadenverkleidung und einer Metallprofilleiste zu deren Unterstützung
US5464302A (en) * 1993-08-23 1995-11-07 National Gypsum Company Extendible interconnected C-studs
US5647186A (en) * 1995-01-11 1997-07-15 Donaldson; Ronald Arthur Steel framing system for walls
DE29912774U1 (de) * 1999-07-21 1999-11-18 Profil-Vertrieb GmbH, 76571 Gaggenau Als Leichtbauprofil ausgebildetes Ständerprofil

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2131467B (en) * 1982-12-03 1986-03-05 Ward Brothers Purlin extending across structurial members
DE3809046A1 (de) * 1988-03-18 1989-09-28 Hoesch Stahl Ag Traeger aus stahlblech
DE3879497T2 (de) * 1988-12-21 1993-09-09 Ernest R Bodnar Metallstuetze.
GB2247033A (en) * 1990-08-03 1992-02-19 Ward Building Systems Ltd Elongate cold-formed structural member, e.g. a purlin
FR2766904B1 (fr) * 1997-07-11 1999-10-08 Placoplatre Sa Profile a section transversale du type en c susceptible d'etre associe a lui-meme par emboitement

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2078276A (en) * 1980-06-12 1982-01-06 Expanded Metal Partition Stud
EP0080250A2 (de) * 1981-11-23 1983-06-01 Ayrshire Metal Products public limited company Pfetten
EP0342114A1 (de) * 1988-05-05 1989-11-15 Profilcometube Anordnung bestehend aus einer Aussenwand eines Gebäudes wie eine Dach- oder Fassadenverkleidung und einer Metallprofilleiste zu deren Unterstützung
US5464302A (en) * 1993-08-23 1995-11-07 National Gypsum Company Extendible interconnected C-studs
US5647186A (en) * 1995-01-11 1997-07-15 Donaldson; Ronald Arthur Steel framing system for walls
DE29912774U1 (de) * 1999-07-21 1999-11-18 Profil-Vertrieb GmbH, 76571 Gaggenau Als Leichtbauprofil ausgebildetes Ständerprofil

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1312725A1 (de) * 2001-11-19 2003-05-21 Rautaruukki OYJ Aussenwandpaneel und Aussenwand
EP3851760A1 (de) * 2020-01-16 2021-07-21 Carrier Corporation Isolierplatte für ein isoliertes luftstromgehäuse und isoliertes luftstromgehäuse mit einer solchen isolierplatte
US11351759B2 (en) 2020-01-16 2022-06-07 Carrier Corporation Insulating panel for an insulated air-flow casing and insulated air-flow casing comprising such an insulating panel

Also Published As

Publication number Publication date
AU2719901A (en) 2001-07-16
WO2001049952A1 (en) 2001-07-12
NO20006721L (no) 2001-07-02
EP1242697A1 (de) 2002-09-25
NO20006721D0 (no) 2000-12-29
SE9904864D0 (sv) 1999-12-30
EP1113116A3 (de) 2003-07-09
NO316327B1 (no) 2004-01-12
WO2001049952A9 (en) 2002-09-06

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