Building studs, wall structures comprising such building studs, and methods for forming wall structures

Abstract

A building stud (10) for forming a framework for mounting wall panels, comprising first and second flange portions (12, 14) and a web portion (16) interconnecting the flange portions, wherein the flange portions comprise planar, elongated wood fiber members (18, 20), and the web portion comprises a polymeric and / or cellulose fiber based veneer member (22) having a first linear line of weakness (24) and a second linear line of weakness (26), the lines of weakness being parallel and the veneer member bendable along the lines of weakness to enable the building stud to be folded from a retracted storage position to an extended installation position.

Description

[Technical Field]

[0001] The present invention relates to building studs for forming a framework for mounting wall panels, a wall structure comprising such building studs, and a method for forming a wall structure. [Background technology]

[0002] When building a wall, a framework with studs is created. Horizontally, a top board is attached to the ceiling and a bottom board is attached to the floor. Vertical studs are then placed between these, usually 450 to 600 mm apart. Once the framework is installed, wall panels are attached to the framework with nails or screws. Therefore, the distance between the studs is determined by the width of the wall panels that are fastened to the studs. Common materials for wall panels are gypsum, MDF (medium density fiber), OSB (oriented strand board), shavings, and wood chips. Magnesium oxide, calcium silicate, fiber cement, and fiber gypsum boards, as well as various types of composite boards, also exist.

[0003] When constructing walls in general and interior walls in particular, studs made from steel or wood are primarily used today. Wooden studs are usually solid and square, making them suitable for attaching wall panels with screws or nails. However, wooden studs are relatively heavy and prone to twisting during storage.

[0004] Steel studs are commonly used in wall structures made using so-called light-frame construction techniques. Typically, such wall structures comprise a framework of metal profile studs forming supports or frames that are covered with sheet-like building boards. This framework includes horizontal studs that form top and bottom panels, and these studs typically have a U-shaped cross section. Upright studs are attached to the top and bottom panels at predetermined mutual intervals, and then the building boards are attached to these panels and studs.

[0005] Steel studs are typically made from steel plate that is cut and bent to achieve the desired profile. Typically, a steel stud has two parallel flange members joined by a transverse web member that extends substantially perpendicular to the flange members. Thus, the steel stud can have a substantially C-shaped cross section. Steel studs are often made from relatively thin steel plate. For example, steel studs are typically made from steel plate with a thickness in the range of 0.4–0.6 mm. While thin material thickness is important from a cost perspective, it is also crucial for the sound transmission of the wall. Thinner web sections transmit less sound between the flange sections than thicker web sections, so thinner steel better attenuates sound transmitted through the wall. Another advantage of steel studs is that they can be "boxed," i.e., placed inside each other, during transportation and storage. This reduces the volume they occupy, which is important from a storage perspective and considering the cost and environmentally harmful nature of transportation. This is also crucial in work sites where storage space is often scarce.

[0006] When attaching wall panels to framing, nails or screws are typically spaced approximately 200 mm apart on center at the edges of the wall panels and approximately 300 mm apart on center at the center of the panels. The primary method of attachment to wooden framing is by screwing, which is slower and more demanding on the installer than nailing. This is done because when nailing into wooden bars, there is a risk that the nails will "work out" due to changes in shape that occur in the wood when the air humidity changes. Nails that work out in this way then cause visible defects in the finished wall surface and can show through paint or wallpaper.

[0007] In framing constructed from steel studs, nailing is not possible because the steel is too thin for nails to be attached as intended. Attaching solid wall panels to the framing with screws can also be problematic when thin studs are used. With solid plasterboard, such as plywood and OSB, the resistance encountered when mechanically sinking a screw head into the wall panel can be so great that the interaction between the screw and the steel stud deforms the steel stud rather than forcing the screw into the stud. The screw threads then lose friction within the steel stud. Summary of the Invention [Problem to be solved by the invention]

[0008] It is an object of the present invention to provide a new type of building stud and related method that can help to at least partially solve this problem. [Means for solving the problem]

[0009] One aspect of the invention relates to a building stud for forming a framework for mounting wall panels, the building stud comprising first and second flange portions and a web portion interconnecting the flange portions, each flange portion comprising a planar elongated wood fiber member which may have a substantially rectangular cross-section, the web portion comprising a polymeric and / or cellulose fiber based veneer member including first and second linear lines of weakness which are parallel, the veneer member bendable along the lines of weakness to enable the building stud to be brought from a retracted storage position to an extended installation position.

[0010] For example, each wood fibre component may be a panel or board of solid wood or chipboard or wood fibre laminate.

[0011] In principle, the sheet member may contain any polymer and / or cellulose fiber material, or a combination thereof, as long as the sheet member provides sufficient strength in the expanded mounting position. For example, the sheet member may comprise a warm or thermosetting sheet, such as a sheet made from ABS (acrylonitrile butadiene styrene monomer) or polypropylene (PP). For example, it may be preferable if the sheet member comprises an ABS sheet having a thickness in the range of 1.5 to 3.0 mm, in which parallel embossments in the sheet material form the fold lines or lines of weakness.

[0012] Alternatively, the veneer member may comprise a carton or cardboard element, i.e., a rigid paper product, the production of which includes a step of dewatering a suspension of cellulosic fibers and optionally man-made fibers. The cardboard element may, for example, comprise corrugated cardboard, i.e., paper, so-called corrugated cardboard with a liner glued on both sides, so-called fluting. The basis weight of the cardboard material may preferably exceed 170 grams per square meter (paperboard) and preferably exceed 400 grams per square meter (cardboard). In cardboard elements, the lines of weakness may preferably be realized by crease lines, i.e., embossments in the cardboard material, which cause local delamination of the layers of the cardboard material and thereby create a hinge function.

[0013] According to yet another alternative, the veneer members may comprise fibreboard, for example MDF (medium density fibre board) or masonite.

[0014] The veneer member may comprise different materials that may be laminated. For example, the line of weakness may be formed by a flexible layer of the veneer member or a fabric-connected rigid segment. For example, fiberboard bonded to a nonwoven fabric may form the veneer member of a building stud according to the present invention, where adjacent fiberboards bonded to the nonwoven fabric are foldably arranged along parallel fold lines so that the building stud can be brought from a retracted storage position to an extended installation position. Thus, in this embodiment, the line of weakness is a fold line formed by the nonwoven fabric.

[0015] The sheet member may comprise a first attachment portion attached adjacent to the first flange portion, a second attachment portion attached adjacent to the second flange portion, and a web portion disposed between the attachment portions, the first line of weakness forming a boundary between the first attachment portion and the web portion, and the second line of weakness forming a boundary between the second attachment portion and the web portion. The bond between the attachment portion and each web portion may be a nailed bond, a screwed bond, an adhesive bond, or a combination thereof.

[0016] Alternatively, or as a complement, a groove may be cut into each flange portion, into which the free edge of the mounting portion may be mounted.

[0017] The interaction between the attachment portion and the flange portion helps to reduce shape changes of the wood fiber components in the flange portion caused by, for example, changes in humidity, in other words the attachment portion helps to eliminate or at least reduce problems that may arise when the wood fiber components are fastened.

[0018] In the storage position, the flange portions may be arranged in a common plane, and in the installation position, the flange portions may be arranged in two parallel planes.

[0019] In the storage position, the sheet member may be rectangular, and in the installation position, it may have a U-shaped cross section.

[0020] The line of weakness may be formed by embossing, i.e. by continuously or discontinuously deforming the sheet material along the line of weakness. Alternatively or supplementarily, the line of weakness may be formed by machining a recess along the line of weakness. Alternatively or supplementarily, the line of weakness may also be formed by cutting partly through the sheet material product, continuously or discontinuously along the line of weakness.

[0021] Each wood fiber element may have a substantially rectangular cross-section, and the dimensions of that cross-section may be customized to achieve desired performance. For example, when installing plywood and gypsum wall panels, each wood fiber element may have a cross-sectional dimension of 40 mm wide and 15 mm thick. This width provides sufficient space for joining the edges of two panels to the same stud, while also providing good conditions for securely screwing or nailing the wall panels. Furthermore, this structure solves the problem of moisture-induced movement within the wood material and its effect on nail position (which typically occurs in solid wood studs because there is no wood at the tip of the nail). Movement of the wood material cannot push the nail out of its attachment but only changes the "tightness" of its body. Of course, this assumes that the length of the nail is longer than the combined thickness of the installed wall panel and wood fiber element.

[0022] The web portion may comprise one or more of said veneer members, which or these veneer members may be elongated.

[0023] In the building studs according to the present invention, the web members of the web portions connecting the flange portions can be formed using thin plates, so that good sound attenuation is obtained.Since solid wooden studs are dense and provide a good transmission path for sound, noise attenuation is very poor.

[0024] Another aspect of the present invention relates to a wall structure comprising a building stud as described above.

[0025] Yet another aspect of the present invention relates to a method of forming a wall structure comprising a plurality of elongated building studs, each comprising first and second flange portions and a web portion interconnecting the flange portions, wherein each flange portion comprises a flat elongated wood fiber member, and the web portion comprises a polymeric and / or cellulose fiber based veneer member exhibiting first and second linear lines of weakness, the lines of weakness being parallel. The method comprises: bringing each building stud from a retracted storage position, with the flange portions disposed in a common plane, to an extended installation position, with the flange portions disposed in two parallel planes, by bending the sheet metal member along the line of weakness; positioning and securing the building studs to the framing with the first flange portions of each stud disposed in a common plane when the building studs are brought from the storage position to the installation position; directly or indirectly attaching one or more wall panels to the first flange portion; Includes.

[0026] The problem of space-consuming configuration is solved by the ability to store and transport the studs in a retracted storage position in which the flange portions can be positioned in a common plane and the web portions, which can be planar in the storage position, can be positioned over the flange portions.

[0027] It may be advantageous to be able to adjust the building stud to any length prior to installation while the building stud is in a storage position.

[0028] The studs can therefore be easily expanded by the installer during installation. The shape of the stud in the expanded position is determined by where the veneer members are attached to the wood fiber members and where the lines of weakness are located. The profile of the stud in the expanded position can be H-, U-, or Z-shaped, as desired and depending on the application.

[0029] The thin plate member may be elongated.

[0030] The web portion may include only one sheet member that extends along the stud.

[0031] The web portion may comprise a plurality of thin plate members arranged such that the first lines of weakness are aligned along a common first linear line, the second lines of weakness are aligned along a common second linear line, and the second linear line is parallel to the first linear line.

[0032] In the following, embodiments of the present invention will be described in more detail with reference to the accompanying drawings. [Brief explanation of the drawings]

[0033] [Figure 1] 1 illustrates an embodiment of a building stud according to the present invention in a stored position. [Figure 2] 2 shows the building stud of FIG. 1 in an installation position. [Figure 3] 3 shows the building stud of FIG. 2 attached to a profile plate. [Figure 4] 1 illustrates various configurations of building studs according to the present invention. [Figure 5] 1 illustrates various configurations of building studs according to the present invention. [Figure 6] 1 illustrates various configurations of building studs according to the present invention. [Figure 7] 10A-10C illustrate various embodiments of sheet metal members that may be included in building studs according to the present invention. [Figure 8] 10A-10C illustrate various embodiments of sheet metal members that may be included in building studs according to the present invention. [Figure 9] 1 illustrates an embodiment of a building stud according to the present invention in a stored position. [Figure 10] 1 shows a further embodiment of a building stud according to the present invention in a storage position. [Figure 11a] 10 illustrates yet another embodiment of a building stud according to the present invention in a storage position. [Figure 11b] 10 shows yet another embodiment of a building stud according to the present invention in an installed position. DETAILED DESCRIPTION OF THE INVENTION

[0034] FIG. 1 illustrates an embodiment of a building stud 10 according to the present invention. The stud 10 includes a first flange portion 12, a second flange portion 14, and a web portion 16 interconnecting the flange portions 12, 14. Each flange portion 12, 14 includes a planar, elongated wood fiber member 18, which in the illustrated embodiment has a rectangular cross-section measuring 15 mm by 40 mm. In the illustrated embodiment, each flange portion 12, 14 is formed from a uniform board of homogenous wood, although the flange portions 12, 14 need not be uniform and may include or be made from other types of wood fiber members, such as those made from chipboard or wood fiber laminates.

[0035] The web portion 16 comprises an elongated thin plate member 22 that is rectangular and has a length corresponding to the length of the wood fiber members 18, 20. In the illustrated embodiment, the width of the thin plate member 22 is slightly less than the combined width of the wood fiber members 16, 18. In the illustrated embodiment, the thin plate member 22 is formed from an ABS sheet having a thickness of approximately 2.5 mm.

[0036] The thin plate member 22 has a first line of weakness 24 and a second line of weakness 26, which are straight and parallel, and along which the thin plate member 22 is bendable. The thin plate member 22 is plastically deformable along the lines of weakness 24, 26, allowing the thin plate member 22 to bend along the lines of weakness 24, 26. In the illustrated embodiment, the lines of weakness 24, 26 are constituted by discontinuous fold lines formed in the thin plate member 22 along the lines of weakness 24, 26. However, the lines of weakness 24, 26 may be formed in other ways, such as by through-cut recesses or cuts cut along the lines of weakness 24, 26. Alternatively, or as a supplement, the lines of weakness 24, 26 may be formed by partially cutting the material of the thin plate member 22 along the lines of weakness 24, 26, either continuously or discontinuously.

[0037] The thin plate member 22 comprises a first attachment portion 28 abutting and attached to the first flange portion 12, a second attachment portion 30 abutting and attached to the second flange portion 14, and a web member 32 disposed between the attachment portions 28 and 30. The first line of weakness 24 forms the boundary between the first attachment portion 28 and the web member 32, and the second line of weakness 26 forms the boundary between the second attachment portion 30 and the web member 32.

[0038] In the illustrated embodiment, the mounting portions 28, 30 are connected to the respective flange portions 12, 14 by nails 34 to form nailed joints. The connections between the mounting portions 28, 30 and the flange portions 12, 14 may alternatively be threaded joints, adhesive joints, or combinations of nails, screws, or adhesive joints. Alternatively, or as a complement, grooves (not shown) may be cut into the respective flange portions, into which the free edges of the mounting portions may be fitted. However, in such an embodiment, the free edges must be bent 90 degrees to fit into the grooves.

[0039] 1 shows building stud 10 in a storage position, in which flange portions 12, 14 are positioned side-by-side in a common plane, with planar web portion 16 positioned parallel to and above flange portions 12, 14. This facilitates transport and storage of building studs, as several studs can be stacked on top of each other in a space-efficient manner.

[0040] When an installer intends to install building stud 10 into a wall structure, the installer moves building stud 10 from the retracted storage position shown in FIG. 1 to the extended installation position shown in FIG. 2. This is done by the installer manually rotating flange portions 12, 14 relative to one another about lines of weakness 24, 26 so that flange portions 12, 14 lie in two parallel planes. In this movement, veneer member 22 is locally deformed along the lines of weakness, allowing mounting portions 28, 30 to be perpendicular to web member 32, as shown in FIG. 2. However, web member 32 and mounting portions 28, 30 retain their respective planar shapes, and thus flange portion 16 assumes a U-shaped cross section.

[0041] Once the building stud 10 is brought to the installation position, the installer can place the building stud into the wall structure 11, as shown in Figure 3, where the building stud 10 is positioned on the rail sill 36 for further installation. It may be advantageous to be able to adjust the building stud 10 to any length before installation, while the building stud is in the storage position.

[0042] Figures 4-6 schematically illustrate alternative embodiments of attachment of the web portion to the flange portion and alternative locations of the lines of weakness. These figures show the studs in cross section, with the locations of the lines of weakness indicated by arrows. In each figure, the studs are shown in a storage position on the left and in an installation position on the right.

[0043] In the embodiment shown in Figure 4, the web portion 16a is attached to the flange portions 12a, 14a in the same way as in the embodiment shown in Figure 1.3, i.e. the line of weakness is located in the center of the flange portions 12a, 14a. In the attached position, the stud 10a therefore obtains a substantially I- or H-shaped profile.

[0044] In the embodiment shown in FIG. 5, the lines of weakness are offset near the edges of flange portions 12b, 14b so that, in the installed position, stud 10b has a substantially U-shaped profile, but web member 32b is asymmetrically positioned.

[0045] 6, in the storage position, web portion 16c is double-folded over second flange portion 14c, and the line of weakness is positioned so that web member 32c extends diagonally between web members 12c, 14c in the installed position, thereby causing stud 10c to have a Z-shaped cross-section in the installed position.

[0046] Figure 7 shows a web portion 16d intended to be part of a building stud according to the embodiment of the invention described above with reference to Figures 1 and 2. Web portion 16d comprises an elongated thin plate member 22d that is rectangular and has two parallel longitudinal edges 38. In the embodiment shown, thin plate member 22d has a width of approximately 120 mm. However, it will be understood that the width of thin plate member 22d can be adjusted (taking into account the thickness of the flange portions) to the desired thickness of the building stud in the installation position. The length of thin plate member 22d is adjusted to the desired length of the building stud in the storage position.

[0047] In the illustrated embodiment, the sheet member 22d is approximately 2.5 mm thick. However, it will be appreciated that the thickness of the sheet member 22d can be adjusted to the desired strength of the building stud at the installation location. Typically, the thickness of the sheet member 22d can be in the range of 1 to 5 mm, depending on the material of the sheet member.

[0048] The sheet member 22d has first and second linear, parallel lines of weakness 24d, 26d along which the sheet member 22d can be bent so that the building stud can be moved from a storage position to an installation position, as described above. In the illustrated embodiment, the lines of weakness 24d, 26d include linear indentations 40 extending along each line of weakness 24d, 26d. The indentations 40 are approximately 20 mm long and spaced approximately 5 mm apart. Alternatively, the lines of weakness 24d, 26d may include continuous or discontinuous recesses or cuts.

[0049] As described above, sheet member 22d includes first mounting portion 28d intended for attachment to a first flange portion of a building stud and second mounting portion 30d intended for attachment to a second flange portion of the building stud. Between them, mounting portions 28d, 30d define web member 32d, which is intended to form the flange of the building stud at the attachment location. Thus, first line of weakness 24d forms the interface between first mounting portion 28d and web member 32d, and second line of weakness 26d forms the interface between second mounting portion 30d and web member 32d.

[0050] In the illustrated embodiment, the lines of weakness 24d, 26d are located approximately 20 mm from the respective longitudinal edges 38. However, it will be appreciated that the areas of the attachment portions 28d, 30d can be adjusted by locating the lines of weakness 24d, 26d further away or closer to the longitudinal edges 38. For example, the areas can be adapted to the type of joint used between the attachment portions 28d, 30d and the flange portions.

[0051] The sheet member 22d may be provided with recesses 42 for pipe or cable penetrations. Alternatively or additionally, the sheet member 22d may be provided with weakened lines 44 for forming pipe or cable penetrations.

[0052] 8 shows a web portion 16e intended for inclusion in a building stud according to a further embodiment of the present invention. In this embodiment, the web portion 16e comprises a zigzag-shaped sheet member 22e, but otherwise has lines of weakness 24e, 26e that function similarly to the lines of weakness described above. That is, these lines of weakness separate the sheet member 22e into attachment portions 28e, 30e and an intermediate web portion 32e, the attachment portions 28e, 30e being intended for attachment against flange portions to form a building stud, and the lines of weakness 24e, 26e similarly providing lines along which the sheet member can be folded so that the building stud can be brought from a retracted storage position to an extended installation position.

[0053] It will be appreciated that various stud configurations can be achieved by varying the dimensions of the flanges and web members and locating the lines of weakness in different locations.

[0054] In the above embodiment, each web segment comprises a slat member extending along the stud. However, in alternative embodiments, the web segment may comprise a plurality of slat members spaced apart along the stud, as shown, for example, in FIG. 9.

[0055] FIG. 9 illustrates an embodiment of a building stud 10f according to the present invention. The stud 10f includes a first flange portion 12f, a second flange portion 14f, and a web portion 16f connecting the flange portions 12f, 14f. The web portion 16f includes a plurality of thin plate members 22f having lines of weakness 24f, 26f that function similarly to the lines of weakness described above. That is, these lines of weakness divide each thin plate member 22f into attachment portions 28f, 30f and an intermediate web portion 32f. The attachment portions 28f, 30f are intended to abut and attach to the flange portions to form the building stud, and the lines of weakness 24f, 26f form lines along which the thin plate members can be folded to bring the building stud 10f from the retracted storage position shown in the figure to the equivalent extended installation position described above. Thus, the thin plate members 22f are positioned such that the lines of weakness 24f are aligned along a common first linear line 46f. Similarly, the lines of weakness 26f are aligned along a common second linear line 48f that is parallel to the first linear line 46f.

[0056] In the embodiment shown in Figure 9, the veneer members 22f are uniform and symmetrically positioned on the building stud 10f in the storage position. However, it will be understood that the veneer members need not be uniform and / or symmetrically positioned, so long as the lines of weakness are aligned to form first and second lines of weakness in the web portion that allow the building stud to be brought from the retracted storage position to the extended installation position. An example of a building stud 10g including a web portion 16g with alternatively shaped and positioned veneer members 22g is shown in Figure 10. This veneer member 22g includes lines of weakness 24g, 26g positioned along parallel, linear lines 46g, 48g.

[0057] Figures 11a and 11b show a further embodiment of a building stud 10h according to the present invention: Figure 11a shows the building stud 10h in a retracted storage position, and Figure 11b shows the building stud 10h in an extended installation position.

[0058] Building stud 10h includes web portion 16h, which includes sheet member 22h. In this embodiment, sheet member 22h includes three sheet member segments 28h, 30h, and 32h arranged edge-to-edge, and a ductile fabric 50 attached to and connecting sheet member segments 28h-32h. In the attached position (see FIG. 11a), fabric 50 is disposed between flange portions 12h and 14h and sheet member segments 28h, 30h, and 32h. Sheet member segments 28h, 30h, and 32h may be cellulose fiberboard, e.g., MDF board, and ductile fabric 50 may be a fiber-reinforced fabric.

[0059] The thin plate member segment 28h and the portion of the fabric 50 attached thereto are attached to the first flange portion 12h. Thus, the thin plate member segment 28h forms the first fastening portion of the thin plate member 22h. The thin plate member segment 30h and the portion of the fabric 50 attached thereto are attached to the second flange portion 14h. Thus, the thin plate member segment 30h forms the second fastening portion of the thin plate member 22h. The intermediate thin plate member segment 32h and the portion of the fabric 50 attached thereto are not attached to the flange portions 12h, 14h.

[0060] Along the edges where the sheet member segments 28h, 30h, and 32h abut one another, the sheet member segments 28h, 30h, and 32h have chamfered edges 52 at approximately 45 degrees facing away from the fabric 50. Because adjacent sheet member segments 28h, 30h, and 32h are connected to the fabric 50, they are foldably arranged together along parallel fold lines 24h, 26h. This, along with the fact that the sheet member segments 28h, 30h, and 32h have chamfered edges 52, allows the sheet member 22h to be moved from a generally flat storage position, as shown in FIG. 11a, in which the sheet member segments 28h, 30h, and 32h are arranged in a common plane, to an installed position, as shown in FIG. 11b, in which the chamfered edges 52 of adjacent sheet member segments abut one another to provide support for one another.

Claims

1. A building stud (10, 10a to 10c, 10f to 10h) for forming a framework for attaching wall panels, comprising a first flange portion (12, 12a to 12c, 12f to 12h) and a second flange portion (14, 14a to 14c, 14f to 14h), and a web portion (16, 16a to 16h) interconnecting the flange portions, Each flange portion comprises a planar elongated wood fiber member (18, 20); the web portion (16, 16a-16g) is made of a polymer-based and / or cellulose fiber-based thin plate member (22, 22d-22h) including a first linear line of weakness (24, 24d-24h) and a second linear line of weakness (26, 26d-26h); the lines of weakness are parallel; The thin plate members (22, 22d to 22h) are bendable along the lines of weakness so as to bring the building studs (10, 10a to 10c, 10f to 10h) from a folded storage shape to an unfolded installation shape.

2. The thin plate members (22, 22d to 22h) are a first mounting portion (28, 28d to 28h) that is attached to the first flange portion (12, 12a to 12c to 12f to 12h) in abutment therewith; a second mounting portion (30, 30d to 30h) that is attached to the second flange portion (14, 14a to 14c, 14f to 14h) in abutment therewith; and web members (32, 32d to 32h) disposed between the attachment portions (28, 28d to 28g, 30, 30d to 30g), the first lines of weakness (24, 24d-24h) form a boundary between the first attachment portions (28, 28d-28h) and the web members (32, 32d-32h); 2. The building stud (10, 10a-10c, 10f-10h) according to claim 1, wherein the second line of weakness (26, 26d-26h) forms a boundary between the second attachment portion (30, 30d-30h) and the web member (32, 32d-32h).

3. In the storage configuration, the flange portions (12, 12f, 12g, 14, 14f, 14g) are arranged in a common plane; 3. The building stud (10, 10f, 10g) according to claim 1 or 2, wherein in the mounting configuration, the flange portions (12, 12f, 12g, 14, 14f, 14g) are arranged in two parallel planes.

4. 4. The building stud (10, 10f, 10g) of claim 3, wherein in the stored configuration, the web portions (16, 16a-16g) are planar and positioned parallel to and on the flange portions (12, 12f, 12g, 14, 14f, 14g).

5. The building stud (10) according to any one of claims 1 to 4, wherein the wood fibre elements (18, 20) each have a rectangular cross section.

6. In the storage shape, the thin plate members (22, 22d to 22g) have a rectangular shape; The building stud (10, 10f, 10g) according to any one of claims 1 to 5, wherein in the mounting configuration, the thin plate member (22, 22d to 22g) has a U-shaped cross section.

7. The building stud (10) according to any one of claims 1 to 6, wherein the thin plate members (22, 22d, 22e) are elongated.

8. 8. The building stud (10f, 10g) according to any one of claims 1 to 7, wherein the web portion (16f, 16g) comprises a plurality of polymeric and / or cellulose fiber based thin plate members (22f, 22g) arranged such that the first lines of weakness (24f, 24g) are aligned along a common first linear line (46f, 46g), the second lines of weakness (26f, 26g) are aligned along a common second linear line (48f, 48g), and the second linear lines (48f, 48g) are parallel to the first linear lines (46f, 46g).

9. The building stud (10, 10f, 10g) according to any one of claims 1 to 8, wherein the thin plate member (22, 22d to 22g) comprises a plurality of laminated materials (22h, 50).

10. The building stud (10, 10f, 10g) according to any one of claims 1 to 9, wherein the sheet members (22, 22d-22g) comprise plastic sheets, cardboard or paperboard sheets, and / or wood fibre boards.

11. A wall structure (11) comprising a building stud (10, 10f, 10g) according to any one of claims 1 to 10.

12. 1. A method for providing a wall structure (11) comprising a plurality of elongated building studs (10, 10f, 10g), each having a first flange portion (12, 12f, 12g) and a second flange portion (14, 14f, 14g), and a web portion (16, 16a-16g) interconnecting said flange portions (12, 12f, 12g, 14, 14f, 14g), comprising: Each flange portion (12, 12f, 12g, 14, 14f, 14g) comprises a planar elongated wood fiber member (18, 20); the web portion (16, 16a to 16g) is comprised of a polymer-based and / or cellulose fiber-based thin plate member (22, 22d to 22g) including a first linear line of weakness (24, 24d to 24g) and a second linear line of weakness (26, 26d to 26g); the lines of weakness (24, 24d to 24g, 26, 26d to 26g) are parallel; The method comprises: prior to attaching the building studs to the wall structure, the method includes the step of bringing each building stud (10, 10f, 10g) from a folded storage configuration in which the flange portions (12, 12f, 12g, 14, 14f, 14g) are disposed in a common plane to an unfolded installation configuration in which the flange portions (12, 12f, 12g, 14, 14f, 14g) are disposed in two parallel planes by bending the thin plate members (22, 22d-22g) along the lines of weakness (24, 24d-24g, 26, 26d-26g).

13. when the building studs (10, 10f, 10g) are brought from the storage configuration to the installation configuration, positioning and securing the building studs (10, 10f, 10g) to a framework with their respective first flange portions (12, 12f, 12g) disposed in a common plane; directly or indirectly attaching one or more wall panels to said first flange portion (12, 12f, 12g); 13. The method of claim 12, comprising:

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