EP2691585B1 - Improvements relating to construction - Google Patents
Improvements relating to construction Download PDFInfo
- Publication number
- EP2691585B1 EP2691585B1 EP11791029.9A EP11791029A EP2691585B1 EP 2691585 B1 EP2691585 B1 EP 2691585B1 EP 11791029 A EP11791029 A EP 11791029A EP 2691585 B1 EP2691585 B1 EP 2691585B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- support
- decoupler
- spacer
- panel
- bridge
- 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.)
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Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/74—Heat, sound or noise insulation, absorption, or reflection; Other building methods affording favourable thermal or acoustical conditions, e.g. accumulating of heat within walls
- E04B1/88—Insulating elements for both heat and sound
-
- 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
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- 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
- E04B2/56—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members
- E04B2/58—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members with elongated members of metal
- E04B2/60—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members with elongated members of metal characterised by special cross-section of the elongated members
- E04B2/62—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members with elongated members of metal characterised by special cross-section of the elongated members the members being formed of two or more elements in side-by-side relationship
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- 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
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- 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
- E04B2/7453—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 with panels and support posts, extending from floor to ceiling
- E04B2/7457—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 with panels and support posts, extending from floor to ceiling with wallboards attached to the outer faces of the posts, parallel to the partition
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- 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
- E04C2003/0417—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 demountable
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- 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
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- 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
- E04C2003/043—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 hollow cross-section comprising at least one enclosed cavity
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- E—FIXED CONSTRUCTIONS
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- 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
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- 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
- E04C2003/0465—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 square- or rectangular-shaped
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
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- 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
Description
- This invention relates to supports for use in construction. In particular, though not exclusively, the invention relates to spacer supports for use in frame construction.
- Frame construction is a common building technique for the fabrication of so-called stud wall structures, which are especially useful as internal walls of buildings, e.g. partitions, but may also be used externally. Frame construction involves fastening sheets of walling material, such as plasterboard, to supports. A stud, also referred to as a post, upright or scantling, is an example of such a support. Furthermore, other supports, such as braces, are used in frame construction to hold or strengthen stud-type supports within the wall structure.
- In its simplest form, frame construction involves fastening a sheet of walling material to either side of a row of supports (e.g. studs) to form a 'single stud' wall. An air gap between the sheets of walling material provides a degree of acoustic (sound) isolation.
Acoustic isolation is an important consideration in frame construction. It is hence common practice, particularly in partitioning, to use two rows of parallel supports (e.g. studs) and to fasten a single sheet of walling material to the outside faces of each of the paired supports. This creates an enlarged air gap within the resulting 'twin stud' wall, providing better low frequency acoustic insulation. - However, in both 'single stud' and 'twin stud' walls, supports have been found, undesirably, to act as acoustic bridges due to support-borne transmission of sound waves. This is a particular problem in 'single stud' walls but also occurs in 'twin stud' walls, where some form of brace (support) is generally fastened between parallel supports to provide adequate strength. As such a brace provides a stiff connection between supports, it provides an acoustic bridge, reducing overall acoustic isolating performance. Compared to 'single stud' construction, 'twin stud' construction also suffers from increased cost of materials and installation time.
- In summary, although supports act as spacers in frame construction to provide isolating or insulating gaps, they themselves are often acoustic bridges, particularly when monolithic or made of metal.
- Attempts have been made to overcome this problem.
EP1513989 A1 discloses a wall stud comprising two opposing sidewalls interconnected by a spanning web including a curved member having at least one row of elongate slots formed therein along a longitudinal axis thereof. -
EP 1705 305 A2 discloses generally C-shaped members for use in steel framed buildings, formed from thermally conductive components which have a gap therebetween, which is spanned with a thermally insulating, high strength, reinforced polymer. -
WO03/001003 A1 - Nevertheless, providing good a level of acoustic isolation and/or thermal insulation at low cost, and without excessive installation time, remains a need in the prior art, particularly where high structural stability is desired. It is an object of the invention to address this and/or at least one other problem associated with the prior art.
- The invention embraces advantageous spacer supports for stud wall structures of the type comprising panel supports and a bridge member extending between the panel supports, wherein the bridge member comprises bridge portions connected and separated by a decoupler.
- From a first aspect, the invention resides in a spacer support for a stud wall structure according to claim 1. The spacer support comprises: panel supports having first and second lateral boundaries; and a bridge member extending between the panel supports, the bridge member comprising bridge portions each extending from a lateral boundary of an associated one of the panel supports, the bridge portions being connected and separated by a decoupler at connecting faces of the bridge portions that are fastened to the decoupler, wherein the bridge portions comprise a laterally inward-angled section to position their connecting faces laterally inboard of the first and second lateral boundaries of the panel supports. The bridge member extends between the panel supports generally along a depth axis which is orthogonal to lateral and longitudinal axes of the spacer support. The lateral and longitudinal axes are also orthogonal to each other.
- By separating the bridge portions of the bridge member, the decoupler mitigates acoustic coupling between the panel supports, thereby providing acoustic insulation. Likewise, the decoupler mitigates thermal coupling between the panel supports. The term "mitigate" as used herein ideally also embraces prevention.
- The positioning of the connecting faces laterally inboard by the inward-angled sections of the bridge portions enhances the structural stability to the spacer support. By inboard positioning is meant that the connecting faces do not extend beyond, and preferably do not intersect, the lateral boundaries of the panel supports. This may conveniently be verified in an end view or cross section of the panel support (see e.g.
Figure 1 described below). - Inboard positioning of the connecting faces of the bridge portions leads to a compact structure that, whilst being easy to manufacture and providing economy of space, can reduce strain at the connecting faces fastened to the decoupler and hence limit bending forces acting on the decoupler. In other words, inboard positioning of the decoupler allows a more efficient balance of the load on the decoupler when compression or weight is applied to the panel supports. Thus, in contrast to
EP 1705 305 A2 , which focuses on a high-strength, reinforced polymer to span its gap and counteract bending, the approach of the present invention is to stabilise forces on the decoupler, and the spacer support as a whole, by advantageous arrangement of the bridge portions. - Due to its insulating properties and structural rigidity, the spacer support is of particular value in external walls, e.g. load-bearing external walls.
- The decoupler may act as an acoustic decoupler, i.e. mitigate the transmission of sound between the bridge portions, in any effective manner. The intensity or amplitude of sound and vibrations is typically diminished by attenuation, i.e. absorption, reflection and/or scattering.
- The decoupler disrupts support-borne transmission of sound and vibration by acting as a discontinuity in the bridge member, between the bridge portions. To further enhance acoustic attenuation, the decoupler may advantageously have a damping ratio ζ (C/Cc) of at least 0.2, preferably at least 0.3. Preferably, and typically, the damping ratio of the decoupler may be higher than the damping ratio of the bridge portions, ζ may be determined by logarithmic decrement, as described for example in ISO 4664-2:2006.
The decoupler may act as a thermal decoupler, i.e. mitigate the transfer of heat between the bridge portions, in any effective manner. The transfer of heat may be mitigated by counteracting or slowing one or more of conduction, convection and radiation. - Conduction has been found to be the prime cause of thermal bridging in spacer supports. The decoupler disrupts support-borne conduction of heat by acting as a discontinuity in the bridge member, between the bridge portions. To counteract conduction of heat, the decoupler may advantageously have a thermal conductivity of at most 0.2 W/(K·m), more preferably at most 0.15 W/(K·m) or at most 0.1 W/(K·m), ideally at most 0.01 W/(K·m). The minimum thermal conductivity of the decoupler may be as low as possible, for example 0.01 W(K·m) or 0.001 W/(K·m). Preferably, and typically, the thermal conductivity of the decoupler may be lower than the thermal conductivity of the bridge portions. For example, to drastically reduce heat loss due to cold bridges, the thermal resistance of the decoupler may be at least five times higher than the thermal resistance of each bridge portion.
- The decoupler may preferably be load-bearing, i.e. be capable of supporting weight in addition to its own. For example, the decoupler may advantageously be capable of supporting the weight of one or more of the panel supports and bridge portions. The decoupler may provide at least a majority of the shear resistance and/or pull out resistance of the connection between the bridge portions.
- To ensure a high degree of acoustic and/or thermal insulation between the panel supports, the bridge portions may preferably be connected via the decoupler such that support-borne sound transmitted, and/or heat conducted, from a first panel support to a second panel support must pass through the decoupler. For maximum insulation, the bridge portions may be connected solely via the decoupler.
- For a good compromise between connective stiffness and acoustic attenuation or damping, the decoupler may advantageously have a Young Modulus measured according to ASTM E111-04 (2010) in the range of from 2 MPa to 50 MPa, preferably 10 MPa to 15 MPa. The Poisson's ratio of the decoupler measured according to ASTM E132-04 (2010) may advantageously be in the range of from 0.45 to 0.50, preferably 0.48 to 0.50, most preferably 0.49 to 0.50.
- To lend strength to the spacer support, the transversal shear resistance of the decoupler measured according to EN 14869-2:2004 may preferably be at least 300 N/m, whilst its tensile resistance may preferably be at least 500 N/m. Advantageously, the auto-ignition temperature of the decoupler may be at least 200 °C.
- The decoupler may comprise any suitable material, for example material having one or more of the preferred properties listed above. Advantageously, the decoupler may comprise or consist of a polymeric material, preferably a rubber. The decoupler may comprise a composite material, for example a laminate. Conveniently, the decoupler may comprise an acoustic isolation tape, which may preferably be rubber-based, i.e. comprise at least one rubber layer. Alternatively, the decoupler may, for example comprise or be selected from one or more of a polymeric glue, a silicon sealant, an intumescent sealant, and a medium viscosity paste containing acrylic emulsion, inert fillers and fungicide.
- Advantageously, the decoupler may be fire retardant. Thus the decoupler may preferably comprise an intumescent material, i.e. a material that swells as a result of heat exposure, thus increasing in volume, and decreasing in density. The decoupler and the spacer support as a whole may preferably comply with fire resistance standards e.g. BS 5588, when tested to BS 476: Part 21 , 22 or 23.
- The decoupler may be fastened to the bridge portions with the help of an adhesive. The adhesive may be of any known type and may contribute to decoupling. Accordingly, the adhesive may optionally form part of the decoupler. In one embodiment the decoupler comprises a rubber-based acoustic isolation tape having layers of adhesive on opposed faces.
- The decoupler may have a lateral width, a longitudinal length and a depth separating the bridge portions. Advantageously, the width of the decoupler may be greater than its depth. The length of the decoupler may preferably be greater than the width and the depth. Conveniently, the decoupler may be generally oblong or block-shaped.
- The decoupler may be intermittent, i.e. comprise one or more gaps. Alternatively, the decoupler may be continuous.
The panel supports and/or bridge portions may preferably comprise a web, for example of cold rolled metal such as steel. The web may preferably have a thickness in the range of from 0.3 to 2 mm, e.g. in the range of from 0.4 to 1 .5 mm, preferably in the range of from 0.5 to 1 mm. Conveniently, each panel support and an associated bridge portion may be integral. This can greatly facilitate manufacturing of the panel supports and bridge portion. For example, each panel support and associated bridge portion may be formed of a single web of cold rolled metal, such as steel. To enhance stiffness and facilitate location of the spacer support, the or each panel support may comprise a groove or other locating or stiffening formation. The or each panel support may also comprise a, preferably integral, formation, such as a terminating shoulder, arranged to assist location of the decoupler. - Preferably, the spacer support may comprise two (first and second) panel supports and associated first and second bridge portions.
- The panel supports may each comprise an outer face arranged to support walling material, with the bridge portions and decoupler bridging a gap between the outer faces. The connecting faces of the bridge members may be fastened to the decoupler for example with an adhesive as described above. The panel supports, outer faces and connecting faces may each comprise first and second lateral sides or boundaries defining their width and first and second longitudinal sides or boundaries defining their length. However, it will be appreciated that the spacer support may be used in any orientation and that the terms "lateral", "longitudinal", "depth" and the like wherever used herein are nonlimiting in relation to overall orientation of the spacer support.
- Advantageously, the outer faces of the panel supports may be substantially parallel to each other. Similarly, the connecting faces of the bridge portions are substantially parallel to each other and substantially parallel to the outer faces. "Substantially parallel" may encompass, for example, a deviation in orientation from parallel of less than 15 degrees, preferably less than 10 degrees, most preferably less than 5 or even less than 2 degrees. A substantially parallel orientation of the faces helps, in synergy with the inboard position of the connecting faces, further to reduce shear strain on the decoupler, and thus enhances the stability of the support. Ideally, the faces may be arranged to be parallel to each other.
- For stability and economy of space, the bridge portions are arranged such that the connecting faces of the bridge portions lie laterally inboard of the first and second lateral boundaries or sides of the panel supports. Likewise, the decoupler may preferably lie wholly laterally inboard of the first and second lateral boundaries or sides of the panel supports. Most preferably at least a part (ideally the lateral centre) of the connecting faces and/or the decoupler may lie laterally central within the spacer support, i.e. be equidistant from first and second lateral boundaries of the panel supports.
- The bridge portions extend from a lateral boundary, end or side of an associated panel support. For effective spacing, each bridge portion may comprise an orthogonal section, substantially perpendicular relative to its associated outer face. As aforesaid, to position their connecting faces laterally inboard of the first and second lateral boundaries of the panel supports, the bridge portions comprise a laterally inward-angled section. Preferably, the bridge portions may each comprise an orthogonal section extending from the lateral boundary or side of the panel support associated with the bridge portion, with the inward-angled section extending from the orthogonal section. The spacer support may preferably be generally W-shaped in cross-section, with an inboard section of the spacer support lying between first and second panel supports.
- In one embodiment, the decoupler is substantially equidistant from the panel supports. However, advantageously, to assist so-called boxing of a plurality of spacer supports, the decoupler may alternatively be offset towards one of the panel supports. Preferably, the spacer support may comprise first and second bridge portions, with the first bridge portion bridging a greater distance than the second bridge portion.
- The spacer support may preferably be a stud. The spacer support may preferably have a depth, measured between outer surfaces of the panel supports, of 50 mm or more, preferably 70 mm or more, 80 mm or more, or 90 mm or 100 mm, 150 mm, or even 200 mm or more. A greater depth helps to enhance isolation and insulation. The advantages of the spacer support may however be particularly noticeable or valuable when deployed with a low depth. The depth may, for example be 300 mm or less, or 200 mm or less, or preferably 100 mm or less, or even 80 mm or less. The spacer support can thus provide acoustic and/or thermal decoupling in a space-efficient manner.
- The invention also embraces a stud wall structure comprising a spacer support as described anywhere herein. Preferably the spacer support may define a gap formed between first and second panels of walling material of the stud wall structure, the walling material being supported by, e.g. affixed to, first and second panel supports of the spacer support. The gap defined by the stud wall structure may advantageously comprise isolating or insulating material. The stud wall structure may for example be an internal or external wall or façade system and may be load-bearing.
- Preferably, the spacer support may be adapted for convenient assembly, e.g. domestically or on a construction site. Thus, from a second aspect, the invention resides in a set for assembling one or more spacer supports, the set comprising: a plurality of webs, each of said webs defining a panel support having first and second lateral boundaries and a bridge portion extending from a lateral boundary of the panel support, the bridge portion having a connecting face and a laterally inward-angled section to position the connecting face laterally inboard of the first and second lateral boundaries of the panel support; and a decoupler co-operable with the webs to connect and separate the bridge portions by fastening to the connecting faces.
- To aid storage and transportation, the set may comprise first and second substantially identical webs that are provided in stacked form. Conveniently, the decoupler may comprise an isolation tape comprising a polymeric, e.g. rubber layer having adhesive on opposed faces (e.g. a peelable two-sided-self-adhesive rubber tape).
- From a third aspect, the invention resides in a method of making the spacer support according to the invention, the method comprising: forming or providing each of a plurality of webs into a panel support having first and second lateral boundaries and an integral bridge portion extending from a lateral boundary of the panel support, the bridge portion having a connecting face and a laterally inward-angled section to position the connecting face laterally inboard of the first and second lateral boundaries of the panel support; and fastening a decoupler to the connecting faces of the bridge portions to connect and separate the bridge portions and form a spacer support.
- The invention also extends to the use of a spacer support as described anywhere herein to support and space apart first and second panels of walling material.
- From a fourth aspect, the invention resides in a method of decoupling first and second panel supports, the method comprising: spacing the panel supports to form a gap; and bridging the gap between the panel supports via a decoupler positioned laterally inboard of the panel supports to connect and separate the first and second panel supports. The decoupler and panel supports are as described anywhere herein. The gap may preferably be bridged by a bridge member as described anywhere herein.
- Where context permits, preferred features of each aspect of the invention may be as described in connection with any of the other aspects. Other advantages of the invention will be apparent to the skilled person from the following description of exemplary embodiments of the invention.
- In order that this invention may be more readily understood, reference will now be made, by way of example, to the accompanying drawings, which are not to scale and in which:
-
Figure 1 a is a schematic sectional view of a spacer support according to a first exemplary embodiment of the invention; -
Figure 1b is a perspective view of a segment of the spacer support ofFigure 1 a;Figure 1c is a top view of a segment of the spacer support ofFigures 1 a and 1 b; -
Figure 2a is a schematic sectional view of a first web of the spacer support ofFigures 1 a to 1 c;Figure 2b is a schematic sectional view of a second web of the spacer support ofFigures 1 a to 1 c; -
Figure 2c is a schematic sectional view of a decoupler of the spacer support ofFigures 1 a to 1 c; -
Figure 3a is a sectional view of a spacer support according to a second exemplary embodiment of the invention; -
Figure 3b is a perspective view of a segment of the spacer support ofFigure 3a ; -
Figure 4a is a sectional view of two spacer supports according to the second embodiment of the invention in a boxed configuration; -
Figure 4b is a perspective view of a segment of the boxed spacer supports ofFigure 4a ; -
Figure 5 is a sectional view of a partition comprising spacer supports according to the first embodiment of the invention; -
Figure 6 is a sectional view of a first external wall configuration comprising prior art spacer supports; and -
Figure 7 is a sectional view of a second external wall configuration comprising spacer supports according to an exemplary embodiment of the invention. - Referring to
Figures 1 a to 1 c, in a first embodiment of the invention, a spacer support in the form of astud 2, comprises first andsecond steel webs 4, 6 (hot dipped galvanised, EN 10327:2004 compliant), connected and separated by an acoustic and thermal decoupler in the form of anacoustic isolation tape 8. - The
isolation tape 8 provides enhanced acoustic and thermal isolation or decoupling along a depth of thestud 2, between adistal end 10 and aproximal end 12 thereof. Thestud 2, along with its parts, also has first and second lateral boundaries orsides Figure 1b , a longitudinal length (about 3 metres). - The
steel webs - With reference to
Figure 2a , thefirst web 4 comprises anouter portion 18A representing a first panel support withopposed faces bridge portion 20A extending distally from theouter portion 18A. Theouter portion 18A of thefirst web 4 acts as aproximal wall 22A of thestud 2 and presents a proximalouter face 24A for supporting proximal walling material (not shown in the Figures). In use of the stud, walling material such as plasterboard can be fastened to theouter portion 18A for example with the help of self tapping or self drilling screws. - To enhance stiffness and facilitate location of the
stud 2, theouter portion 18A of thefirst web 4 comprises a laterally central, acutely angledgroove 26A formed in the distal direction X. For the same reasons, theouter portion 18A also comprises a distally extending terminatingshoulder 28A at its firstlateral side 14. - The
bridge portion 20A of the first web extends distally from the secondlateral side 16 of theouter portion 18A. Thebridge portion 20A comprises afirst section 30A that is generally perpendicular to theouter face 24A and asecond section 32A that is angled laterally inwardly from thefirst section 30A. The inwardly angledsection 32A comprises a plurality oflongitudinal slots 34 visible in the view ofFigure 1c , and merges, via akink 44A, into aninner section 36A having a connectingface 38A that is substantially parallel to theouter face 24A of theouter portion 18A. Referring again toFigure 2a , theinner section 36A of the bridge portion has a distally extending terminatingshoulder 40A to enhance stiffness and facilitate location of thebridge portion 20A with respect to theisolation tape 8, which is fastened to the connectingface 38A as will be described. Thebridge portion 20A, with all itssections first web 4, as is theouter portion 18A. - Referring now to
Figure 2b , the second web of the stud is a mirror image of the first web. Indeed, the second web is identical to the first web except for its orientation. Thus, save for a reversal in orientation with respect to the proximal and distal directions, Y, X, the description of the first web also applies to the second web. - The
bridge portion 20B of thesecond web 6 extends proximally from itsouter portion 18B, which represents a second panel support withopposed faces distal wall 22B of the stud, presenting a distalouter face 24B for supporting distal walling material. Thegroove 26B in theouter portion 18B of thesecond web 6 is formed in the proximal direction Y. The terminatingshoulder 28B of theouter portion 18B of the second web also extends proximally, as does the terminatingshoulder 40B of itsinner section 36B. As in the first web, theinner section 36B comprises a connectingface 38B and is linked to theouter portion 18B by a laterally inwardlyangled section 32B comprising slots 34, joined via akink 44B to a generallyperpendicular section 30B. - Referring again to
Figures 1a to 1c , theacoustic isolation tape 8 acting as the decoupler is fastened to the connecting faces 38A, 38B of theinner sections bridge portions second webs isolation tape 8 is generally oblong or block shaped, i.e. rectangular in cross-section, and connects the webs such that their connectingfaces distal walls stud 2, are all parallel to each other. - Since the first and second webs are mirror images, their connection by the
acoustic tape 8 results in a generally C-shaped cross section seen inFigure 1a , albeit that the inwardlyangled sections isolation tape 8 to lie inboard of the lateral boundaries orsides webs acoustic tape 8 lies laterally centrally within thestud 2. In this embodiment, the connecting faces 38A, 38B and the isolatingtape 8 are substantially equidistant from theouter portions outer faces webs - As will be apparent from the above description, the
bridge portions webs tape 8 to form abridge member 46 that extends between theouter portions webs bridge member 46 thus bridges agap 48 formed between the outer faces 24A, 24B of thewebs - The
stud 2 of this embodiment has a lateral width of approximately 35 mm, which corresponds to the width of theouter portions webs sides outer face 24A toouter face 24B, is approximately 90 mm, with the first andsecond webs bridge portions - Referring to
Figure 2C , theisolation tape 8 comprises a core ofblack rubber 42 having a depth of approximately 6 mm and a lateral width of 15 mm. Thetape 8 is a double-faced adhesive resilient tape made from medium density natural rubber coil complying with ASTM Spec of 1056 RO12-1A2. First andsecond faces tape 8 bear a thin layer of adhesive 52A, 52B (e.g. less than 0.5 mm). - The
isolation tape 8, including the adhesive, has a transversal shear resistance of at least 300 N/m, a tensile shear resistance of at least 500 N/m, a Young Modulus of 100 MPa, a Poisson's ratio of 0.49 and a viscous damping ratio of 0.05. - The acoustic attenuation coefficients of the isolation tape in the audible frequency range (20 to 20,000 hertz) are higher than corresponding attenuation coefficient of the steel webs. Furthermore, by virtue of its rubber content, the isolation tape also has a lower thermal conductivity than the steel webs.
- The
isolation tape 8 is load-bearing in the sense that it is capable of supporting weight in addition to its own, namely that of thesteel webs Figure 1 a to 1 c. Theisolation tape 8 provides a majority of the shear resistance and/or pull out resistance of the connection between thewebs bridge portions isolation tape 8. All support-borne sound transmitted, and/or heat conducted, from one web to the other must hence pass through theisolation tape 8. Therefore, thestud 2 of the first embodiment of the invention provides excellent thermal and acoustic isolation between its proximal anddistal walls - The physical properties of the
isolation tape 8 are such that it is able to provide a suitably strong connection between thewebs - To assemble the stud of the first embodiment, the
isolation tape 8 is first fastened to the connectingface 36A of thefirst web 4 with the adhesive layer 52A on itsfirst face 50A. Thereafter, the connectingface 36B of thesecond web 6 is fastened to theisolation tape 8 with the adhesive 52B on thesecond face 50B of thetape 8. - Referring to
Figures 3a and 3b , in a second embodiment of the invention, a spacer support in the form of afurther stud 102, comprises first andsecond steel webs 104, 106 (hot dipped galvanised EN 10327:2004 compliant), connected and separated by an acoustic and thermal decoupler in the form of anacoustic isolation tape 108. - The parts and construction of the stud of the second embodiment of the invention are identical to those of the stud of the first embodiment of the invention, with like reference numerals indicated for like parts in
Figures 3a and 3b (increased by 100), save that thesecond web 106 of the stud comprises anextended bridge portion 120B. Specifically, the inwardlyangled section 132B of the bridge portion is longer in the proximal direction Y, causing the connecting faces 138A, 138B and isolatingtape 108 to be offset towards theproximal wall 122A of thestud 102. For all other aspects of the structure of thestud 102 of the second embodiment, reference is made to the foregoing description of thestud 2 of the first embodiment. - Whilst the
stud 2 of the first embodiment has a symmetrical cross-section, thestud 102 according to the second embodiment is asymmetrical. Referring now toFigures 4a and 4b , the asymmetric structure of thestud 102 of the second embodiment is of particular benefit since it conveniently allows for boxing of twostuds - To box first and
second studs proximal wall 122A of onestud 102Q overlying thedistal wall 122B of theother stud 102R and vice versa. The outer portion 1 18A of thefirst web 104 of thefirst stud 102Q overlies theouter portion 118B of thesecond web 106 of thesecond stud 102R, whilst theouter portion 118A of thefirst web 104 of thesecond stud 102R overlies theouter portion 118B of thesecond web 106 of thefirst stud 102Q. Thegrooves terminal shoulders outer portions webs studs - Referring still to
Figures 4a and 4b , in the boxedconfiguration 158, thebridge portions studs isolation tapes 108 lie inboard of thelateral sides studs studs faces proximal wall 122A of their studs) both have room within thegap 148 bridged by thebridge member 146. - Notably, since the
bridge members 146 of thestuds isolation tapes 108, form the only links between thewalls studs isolation tape 108. Therefore, thestud 102 of the second embodiment of the invention provides excellent thermal and acoustic isolation, not only between its proximal anddistal walls identical stud 102 in a boxedconfiguration 158. - Referring now to
Figure 5 , to test acoustic isolation performance of thestud 2 of the first embodiment, a 3m high and 3.2m wide partition having a partition surface of 9.8 m2 was installed in an acoustically isolated cell using fourstuds 2 according to the first embodiment of the invention. The walling material was 15 mm deep Lafarge GTEC LaDura plasterboard (16.0 kg/m2) and the gap between theplasterboard 60 was filled with 50 mmdeep mineral wool 62 having a density of 1.1 kg/m. - A measurement of airborne sound insulation was made in accordance with BS EN ISO 140-3:1995. The partition divided the cell into a
source room 64 and areceiving room 66. A sound level was applied in the source room in the range of frequencies from 50 to 5000 Hz and sound in the receiving room was measured. The difference between the applied sound level and the measured sound level was computed in accordance with BS EN ISO 717-1:1997, giving a sound insulation index Rw (C, Ctr) = 56 (-3, -10) dB, calculated between 100-3150 Hz. - It was hence found that the partition comprising the stud according to the first embodiment of the invention provided an extra 6 db of isolation versus a standard stud and an additional 3 db compared to a prior art monolithic acoustic stud.
- The thermal performance of a spacer support according to the invention is compared to that of a prior art metal spacer support (without a decoupler), using a 2-D thermal model analysis commercially available under the name BISCO from Physibel.
- The analysed prior art metal spacer support comprises a web which has a standard, generally C-shaped cross section with two substantially parallel panel supports, having a lateral width of 50 mm, separated by a substantially orthogonal, monolithic bridge section having a depth of 100 mm. The edges of the panel supports distal from the join to the bridge section comprise an short inward flange substantially parallel to the bridge section. The web is cold rolled steel having a thickness of 1.2 mm.
- Referring to
Figures 3a and 3b , the analysed spacer support according to the invention is identical to that of the second exemplary embodiment of the invention described hereinabove, save that, to enable direct comparison with the prior art spacer support, the outer portions of thespacer support bridge portions decoupler 108 span a gap between the proximal and distal walling material of 100 mm, and the steel web has a thickness of 1.2 mm. - For the analysis, two prior art spacer supports and two spacer supports according to the invention are incorporated into respective wall configurations: Configuration 1 and
Configuration 2. The type of spacer supports incorporated is the sole difference betweenConfigurations 1 and 2. - With reference to
Figures 6 and7 , an internal wall surface of both Configuration 1 andConfiguration 2 comprises a layer of Lafarge "Megadeco" wallingmaterial 70 having a thickness of 15 mm. Spacer supports of either the described prior art metal type in Configuration 1 (71 ,Figure 6 ) or the of the described type according to the present invention in Configuration 2 (102,Figure 7 ) span a gap of 100 mm to a layer of Lafarge "Aqua Board" wallingmaterial 72, having a thickness of 12 mm. The gap encompassing the space between the wallingmaterials studs mineral wool insulation 73. On an external face of the wallingmaterial 72 is affixed a layer of insulation material fabricated from one of two materials; (i) expanded polystyrene (EPS) (73, "Variant 1"), or either polyurethane (PUR) or polyisocyanurate (PIR), both of which have the same thermal conductivity (74, "Variant 2"). The depth of theinsulation material Configuration 2. - To assess the thermal performance of the spacer supports, the U-values (thermal transmittance) of Configuration 1 and
Configuration 2 are calculated using the BISCO model. The temperature difference across the configurations is 20°C i.e. the temperature is 0°C externally and 20°C internally, and thermal conductivities are assumed to be as set out in Table 1. The thermal conductivity of the decoupler was considered to be lower than 0.01 W/(K·m).Table 1. Thermal properties of material Material Thermal conductivity λ-value (Wm-1K-1) Thermal Resistance (m2KW-1) Steel 50 Lafarge Megadeco 0.25 Lafarge Aqua Bond 0.25 Render 1.0 Extruded/Expanded Polystyrene 0.035 Mineral Wool 0.037 PUR/PIR 0.025 Wood 0.17 Concrete 2.6 External surface resistance 0.04 Internal surface resistance 0.13 - The calculated U-values of
Configurations 1 and 2 for the various thicknesses of insulation material are shown in Table 2 for the first and second variants, i.e. using EPS as insulation (Variant 1) or PUR/PIR (Variant 2).Table 2. U-values (W/(m2K)) Insulation material thickness (mm) EPS (λ = 0.035) PIR/PUR (λ = 0.025) Spacer 71 Config. 1Spacer 102 Config. 2Improvement Spacer 71 Config. 1 Spacer 102 Config. 2Improvement 60 0.271 0.213 21.40% 0.227 0.186 18.10% 80 0.234 0.190 18.80% 0.192 0.162 15.60% 100 0.206 0.171 17.00% 0.166 0.143 13.90% 120 0.184 0.156 15.20% 0.146 0.128 12.30% - A comparison of the U-values of Configuration 1 and
Configuration 2 allows the contribution of the spacer support to the overall thermal insulation performance of the Configurations to be assessed, all other variables being eliminated. - The reduction of the calculated U-values when using the spacer support according to the invention, compared to the prior art metal spacer support, is significant, ranging from 12 to 21 %, depending on the configuration.
- The values in Table 2 also demonstrate that the advantageous effect of the spacer support of the invention on U-values is stronger when lighter EPS insulation panels (i.e. low quality insulation panels) are used.
- According to the calculations, the common threshold value of thermal transmittance of 0.2 W/(m2K) (i.e. the standard for passive house) using 80 mm of EPS insulation, can be achieved by using spacer supports according to the invention but not the prior art metal spacer supports.
Claims (15)
- A spacer support (2) for a stud wall structure, the spacer support comprising a first and second panel supports (4,6) having first and second lateral sides (14,16), the first and second panel supports being connected and separated by an acoustic and thermal decoupler (8), wherein:a) the first panel support (4) comprises an outer portion (18A) with opposed faces (19A,21A,24A), of which one outer face (24A), and a bridge portion (20A) extending distally from the outer portion (18A) to an inner section (36A) of said bridge portion (20A);b) the bridge portion (20A) of the first panel support (4) extends distally from the second lateral side (16) of the outer portion (18A) and comprises a first section (30A) that is generally perpendicular to the outer face (24A) of the outer portion (18A) and a second section (32A) that is angled laterally inwardly from the end of the first section (30A) to the end of the inner section (36A) of said bridge portion; the spacer support (2) being characterized in that it further comprises:c) a second panel support (6) which is a mirror or quasi-mirror image of the first panel support (4) comprising an outer portion (18B) with opposed faces (19B,21B,24B), of which one outer face (24B), and a bridge portion (20B) extending distally from the outer portion (18B) to an inner section (36B) of said bridge portion (20B);
in thatd) the first panel support (4) and the second panel support (6) being connected and separated by said decoupler (8), which extends essentially in the longitudinal direction of the spacer support; and
and in thate) said bridge portions (20A, 20B) further each comprise a connecting face (38A, 38B), wherein the connecting faces are substantially parallel to each other and to said outer faces (24A, 24B), said decoupler being fastened to said connecting faces (38A,38B) of both bridges portions (20A, 20B) of each panel support (4,6), thereby connecting the first and second panel supports (4,6). - The spacer support of claim 1, wherein the outer portions (18A,18B) of each panel support (4,6) comprise a proximal outer face (24A,24B) having a laterally central, acutely angled groove (26A,26B) formed in the distal direction of X-axis and a distally extending terminating shoulder (28A,28B) at each first lateral (side 14).
- The spacer support of claim 1 or 2, wherein the inwardly angled section (32A,32B) of the bridge portion (20A, 20B) of each panel support (4,6) comprises a plurality of longitudinal slots (34) and merges, via a kink (44A,44B) into an inner section (36A,36B) having a connecting face (38A,38B) that is substantially parallel to the outer face (24A,24B) of the outer portion (18A,18B) of each panel support (4,6) .
- The spacer support of any preceding claims, wherein each panel support and associated bridge portion are integral and comprise a web of cold rolled metal.
- The spacer support of any preceding claims, wherein the decoupler comprises a polymeric material, a composite material, an isolation tape, a polymeric glue, a silicon sealant, an intumescent sealant, a medium viscosity paste containing an acrylic emulsion, inert fillers and a fungicide and/or a fire retardant material.
- The spacer support of claim 5, wherein the decoupler comprises an intumescent material or a rubber-based isolation tape.
- The spacer support of any preceding claims wherein the decoupler is fastened to the bridge portions with an adhesive.
- The spacer support of any preceding claims, wherein the decoupler is offset towards one of the panel supports to allow boxing of the spacer support with an identical second spacer support.
- The spacer support of any preceding claims comprising first and second bridge portions and wherein the first bridge portion bridges a greater distance than the second bridge portion.
- The spacer support of any of claims 1 to 8, wherein the decoupler is substantially equidistant from the panel supports.
- A spacer support arrangement comprising first and second spacer supports according to claim 9 or claim 10 in a boxed configuration.
- A stud wall structure comprising a spacer support or spacer support arrangement according to any of preceding claims.
- A set for assembling a spacer support according to any one of claims 1 to 10, the set comprising:a) a plurality of webs, each of said webs defining a panel support having first and second lateral boundaries and a bridge portion extending from a lateral boundary of the panel support, the bridge portion having a connecting face and a laterally inward-angled section to position the connecting face laterally inboard of the first and second lateral boundaries of the panel support; andb) a decoupler co-operable with the webs to connect and separate the bridge portions by fastening to the connecting faces.
- A method of making a spacer support according to any one of claims 1 to 10, the method comprising:a) forming each of a plurality of webs into a panel support having first and second lateral boundaries and an integral bridge portion extending from a lateral boundary of the panel support, the bridge portion having a connecting face and a laterally inward-angled section to position the connecting face laterally inboard of the first and second lateral boundaries of the panel support; andb) fastening a decoupler to the connecting faces of the bridge portions to connect and separate the bridge portions and form a spacer support.
- The method of claim 14, wherein the webs are of steel and are formed by cold rolling.
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US20220074198A1 (en) * | 2020-09-09 | 2022-03-10 | Jon Sessler | Sound damping structural support system |
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GB2492531A (en) * | 2011-06-24 | 2013-01-09 | Retro Eco Ltd | Stud for insulation with wiring channel |
EP2886748A1 (en) * | 2013-12-20 | 2015-06-24 | Siniat International SAS | Protective structure for board partitions |
WO2016128008A1 (en) * | 2015-02-11 | 2016-08-18 | Knauf Gips Kg | Drywall construction for resonance sound absorption |
US11486150B2 (en) | 2016-12-20 | 2022-11-01 | Clarkwestern Dietrich Building Systems Llc | Finishing accessory with backing strip |
US11624186B2 (en) | 2020-09-09 | 2023-04-11 | Jon Sessler | Unitary double stud assembly for sound damping wall |
USD1026252S1 (en) | 2020-11-12 | 2024-05-07 | Clarkwestern Dietrich Building Systems Llc | Control joint |
US11885138B2 (en) | 2020-11-12 | 2024-01-30 | Clarkwestern Dietrich Building Systems Llc | Control joint |
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AT316817B (en) * | 1971-04-14 | 1974-07-25 | Walter Loeffler Dipl Ing Dr Te | Double-shell partition |
JPH0742267A (en) * | 1993-08-02 | 1995-02-10 | Chiyuuo:Kk | Stud for temporary house |
US5720144A (en) * | 1996-03-07 | 1998-02-24 | Knudson; Gary A. | Metal beams with thermal break and methods |
US6250042B1 (en) * | 1996-06-17 | 2001-06-26 | University Of Central Florida | Additional metal and wood composite framing members for residential and light commercial construction |
NL1018358C2 (en) * | 2001-06-22 | 2002-12-30 | Isopar B V | Support structure. |
GB0212734D0 (en) * | 2002-05-31 | 2002-07-10 | Lafarge Plasterboard Ltd | Wall stud |
US6910311B2 (en) * | 2002-06-06 | 2005-06-28 | Verne Leroy Lindberg | Members with a thermal break |
US20050183382A1 (en) * | 2002-06-06 | 2005-08-25 | Jensen Gary L. | Method of making members with a thermal break |
JP4188791B2 (en) * | 2003-09-30 | 2008-11-26 | 大和ハウス工業株式会社 | Structure of partition wall of staggered stud |
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US20220074198A1 (en) * | 2020-09-09 | 2022-03-10 | Jon Sessler | Sound damping structural support system |
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PE20141730A1 (en) | 2014-11-26 |
PL2691585T3 (en) | 2019-06-28 |
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GB2489486A (en) | 2012-10-03 |
PT2691585T (en) | 2019-04-01 |
ES2716963T3 (en) | 2019-06-18 |
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