EP2397620A2 - Laminated beam construction - Google Patents

Laminated beam construction Download PDF

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Publication number
EP2397620A2
EP2397620A2 EP11168069A EP11168069A EP2397620A2 EP 2397620 A2 EP2397620 A2 EP 2397620A2 EP 11168069 A EP11168069 A EP 11168069A EP 11168069 A EP11168069 A EP 11168069A EP 2397620 A2 EP2397620 A2 EP 2397620A2
Authority
EP
European Patent Office
Prior art keywords
laminated
surface layers
beam construction
another
laminated beam
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP11168069A
Other languages
German (de)
French (fr)
Other versions
EP2397620A3 (en
EP2397620B1 (en
Inventor
Kyösti Heino
Jukka Sevon
Matti Steenroos
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Timber Frame Ltd Oy
WOODPOLIS
Paroc Group Oy
Original Assignee
Timber Frame Ltd Oy
Woodpolis
Paroc Oy AB
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Timber Frame Ltd Oy, Woodpolis, Paroc Oy AB filed Critical Timber Frame Ltd Oy
Publication of EP2397620A2 publication Critical patent/EP2397620A2/en
Publication of EP2397620A3 publication Critical patent/EP2397620A3/en
Application granted granted Critical
Publication of EP2397620B1 publication Critical patent/EP2397620B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C3/00—Structural elongated elements designed for load-supporting
    • E04C3/02—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces
    • E04C3/12—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of wood, e.g. with reinforcements, with tensioning members
    • E04C3/14—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of wood, e.g. with reinforcements, with tensioning members with substantially solid, i.e. unapertured, web
    • 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
    • E04B2/70—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members with elongated members of wood
    • E04B2/701—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members with elongated members of wood with integrated supporting and obturation function
    • E04B2/702—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members with elongated members of wood with integrated supporting and obturation function with longitudinal horizontal elements
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C1/00—Building elements of block or other shape for the construction of parts of buildings
    • E04C1/40—Building elements of block or other shape for the construction of parts of buildings built-up from parts of different materials, e.g. composed of layers of different materials or stones with filling material or with insulating inserts
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
    • E04C2/00—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels
    • E04C2/02—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials
    • E04C2/10—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products
    • E04C2/24—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products laminated and composed of materials covered by two or more of groups E04C2/12, E04C2/16, E04C2/20
    • E04C2/243—Building elements of relatively thin form for the construction of parts of buildings, e.g. sheet materials, slabs, or panels characterised by specified materials of wood, fibres, chips, vegetable stems, or the like; of plastics; of foamed products laminated and composed of materials covered by two or more of groups E04C2/12, E04C2/16, E04C2/20 one at least of the material being insulating
    • 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
    • E04C3/12—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces of wood, e.g. with reinforcements, with tensioning members
    • E04C3/122—Laminated
    • 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
    • E04C3/29—Joists; Girders, trusses, or trusslike structures, e.g. prefabricated; Lintels; Transoms; Braces built-up from parts of different material, i.e. composite structures
    • 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
    • E04B2/02—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls built-up from layers of building elements
    • E04B2002/0202—Details of connections
    • E04B2002/0204—Non-undercut connections, e.g. tongue and groove connections
    • E04B2002/0208—Non-undercut connections, e.g. tongue and groove connections of trapezoidal shape
    • 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
    • E04B2/02—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls built-up from layers of building elements
    • E04B2002/0202—Details of connections
    • E04B2002/0204—Non-undercut connections, e.g. tongue and groove connections
    • E04B2002/0228—Non-undercut connections, e.g. tongue and groove connections with tongues next to each other on one end surface and grooves next to each other on opposite end surface

Definitions

  • the present invention relates to a laminated beam construction comprising surface layers of wood material and between them an inner part of insulating material.
  • a laminated beam construction with an inner part of timber glued to the surface layer has as such been known for a long time.
  • the problem with this type of laminated beam construction, as with a traditional beam construction, is its insufficient heat insulation capacity with respect to current regulations.
  • problems are caused by the subsiding of the beams by as much as several centimetres per metre of height during the first years.
  • Swedish patent publication no. 457456 is disclosed a timber element, wherein the outer panels made of wood are provided with longitudinal grooves in which spacers are arranged.
  • the empty space between the wood panels and the spacers is intended to be filled with thermal insulation material, for example foamed polyurethane.
  • thermal insulation material for example foamed polyurethane.
  • holes are in addition formed at certain points in the spacers for positioning vertical rods in them at the height of a completed wall, whereupon the said rods form the load-bearing elements of the wall.
  • SE 303580 is described a beam of laminated construction with wooden sidewalls, which are attached to one another firmly by means of an insulating intermediate layer of foamed plastic, and where there may optionally be a waterproof layer between the panel board and the layer of foamed plastic.
  • the disadvantage of this construction is, however, that the plastic material is relatively easily combustible and rather expensive.
  • Another disadvantage of this construction is that between such beams must in practice be placed a separate caulking layer to seal the gap between the beams against heat loss.
  • the aim of the present invention is to provide an improved laminated beam construction which has good thermal insulation properties and functions well also when the beam construction subsides during the first years.
  • the laminated beam construction is characterised in that in the structural wool, the fibres are essentially perpendicular to the surfaces of the surface layers directed at one another, and that the structural wool extends on at least one of its edges outwards from the surface layers, forming a thermal insulation layer which fills the seam between the laminated beams to be placed on top of one another at the structural wool layer.
  • the structural wool preferably used in the interior has a thickness greater than the height of the surface layers, whereupon when the laminated beams are placed on top of one another, the structural wool forms the insulation layer between the beams directly without a separate addition of insulating material.
  • Other preferred embodiments of the invention are disclosed in dependent claims 2 to 6.
  • FIG 1 shows laminated beams 1, 1' and 1" when mounted on top of one another, the topmost laminated beam 1" being shown only partly.
  • Each laminated beam 1, 1', 1" comprises surface layers 2a, 2b of wood material and a thermal insulation layer 3 of structural wool placed between them which is glued to the surface layers 2a, 2b.
  • the fibres of the structural wool 3 are essentially perpendicular to the surfaces of the surface layers 2a, 2b directed at one another, as shown diagrammatically in the Figure by horizontal lines.
  • the surface layers 2a, 2b may be, for example, of timber or wood panels laminated with each other.
  • the properties of the structural wool layer make it possible to bind the surface layers directly with each other by means of the structural wool layer without using separate trusses between the surface layers.
  • the thickness of the surface layers 2a, 2b is typically within the range from approximately 50 to 100 mm, but their thickness may deviate considerably from this.
  • the thickness of the surface layers may be different on the inner and outer surface and the minimum value for thickness is determined mainly by whether the said surface layer is a wall-bearing structural element or not.
  • the surface layers of the laminated beams are preferably made tongued and grooved on the edges of the laminated beams to be mounted on top of one another which are directed at each other, whereupon on the upper edge of the lower laminated beam is preferably a tongue 5 and on the lower edge of the upper laminated beam is the corresponding groove 4. There may be one or more grooves 4 and corresponding tongues 5 adjacent to one another on the edge of each surface layer 2a, 2b.
  • the laminated beam construction is in addition preferably provided with sealing means (not shown) on that side of it which comes inside the building, which sealing means seal the gap between the laminated beams to be placed on top of one another to prevent excess humidity from transferring to the insulating material.
  • the sealing means may be, for example, a strip of plywood board which is positioned, for example, in a mounting slot (not shown) formed in the edge parts of the surface structures of the laminated beams mounted on top of one another, which are positioned opposite one another.
  • sealing means may also be used, for example, various elastic sealing tapes, which may conceivably be placed, for example, at the bottom of the groove of a laminated beam.
  • the outer surface may also be provided with sealing means (not shown), to secure, e.g. rainwater from entering between the laminated beams.
  • the structural wool layer 3 preferably extends at least on one of its edges outwards from the surface layers 2a, 2b in elevation, as indicated by reference numeral 7 in Figure 1 on the lower edge of the lowest laminated beam. Layer 3 extends preferably on both edges outwards from the surface layers 2a, 2b, whereupon in the example of Figure 1 , on the upper edge of the laminated beam, the extension may extend, for example, to the elevation plane determined by the tongues 5 or beyond it. Such extending outwards of the structural wool causes the gap 6 between the laminated beams 1 mounted on top of one another to be efficiently filled with thermal insulation material.
  • the structural wool may extend outwards from the surface layer on one of its edges, for example, within the range from 5 to 20 mm.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Chemical & Material Sciences (AREA)
  • Composite Materials (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Building Environments (AREA)
  • Rod-Shaped Construction Members (AREA)

Abstract

The invention relates to a laminated beam construction (1, 1', 1") comprising surface layers (2a, 2b) of wood material and between them an inner part (3) of insulating material. The insulating material is structural wool glued to the surface layers. In the structural wool (3), the fibres are essentially perpendicular to the surfaces of the surface layers (2a, 2b) directed at one another.

Description

  • The present invention relates to a laminated beam construction comprising surface layers of wood material and between them an inner part of insulating material.
  • A laminated beam construction with an inner part of timber glued to the surface layer has as such been known for a long time. The problem with this type of laminated beam construction, as with a traditional beam construction, is its insufficient heat insulation capacity with respect to current regulations. In addition, with these beam constructions problems are caused by the subsiding of the beams by as much as several centimetres per metre of height during the first years.
  • In Swedish patent publication no. 457456 is disclosed a timber element, wherein the outer panels made of wood are provided with longitudinal grooves in which spacers are arranged. In this construction, the empty space between the wood panels and the spacers is intended to be filled with thermal insulation material, for example foamed polyurethane. In the construction, holes are in addition formed at certain points in the spacers for positioning vertical rods in them at the height of a completed wall, whereupon the said rods form the load-bearing elements of the wall. In the publication SE 303580 is described a beam of laminated construction with wooden sidewalls, which are attached to one another firmly by means of an insulating intermediate layer of foamed plastic, and where there may optionally be a waterproof layer between the panel board and the layer of foamed plastic. The disadvantage of this construction is, however, that the plastic material is relatively easily combustible and rather expensive. Another disadvantage of this construction is that between such beams must in practice be placed a separate caulking layer to seal the gap between the beams against heat loss.
  • The aim of the present invention is to provide an improved laminated beam construction which has good thermal insulation properties and functions well also when the beam construction subsides during the first years. To achieve this aim, the laminated beam construction is characterised in that in the structural wool, the fibres are essentially perpendicular to the surfaces of the surface layers directed at one another, and that the structural wool extends on at least one of its edges outwards from the surface layers, forming a thermal insulation layer which fills the seam between the laminated beams to be placed on top of one another at the structural wool layer.
  • The structural wool preferably used in the interior has a thickness greater than the height of the surface layers, whereupon when the laminated beams are placed on top of one another, the structural wool forms the insulation layer between the beams directly without a separate addition of insulating material. Other preferred embodiments of the invention are disclosed in dependent claims 2 to 6.
  • The invention is described in the following with reference to the accompanying drawing, the single Figure 1 of which shows diagrammatically the cross-section of a laminated beam construction according to the invention when the laminated beams are mounted on top of one another.
  • Figure 1 shows laminated beams 1, 1' and 1" when mounted on top of one another, the topmost laminated beam 1" being shown only partly. Each laminated beam 1, 1', 1" comprises surface layers 2a, 2b of wood material and a thermal insulation layer 3 of structural wool placed between them which is glued to the surface layers 2a, 2b. The fibres of the structural wool 3 are essentially perpendicular to the surfaces of the surface layers 2a, 2b directed at one another, as shown diagrammatically in the Figure by horizontal lines. The surface layers 2a, 2b may be, for example, of timber or wood panels laminated with each other. The properties of the structural wool layer make it possible to bind the surface layers directly with each other by means of the structural wool layer without using separate trusses between the surface layers. The thickness of the surface layers 2a, 2b is typically within the range from approximately 50 to 100 mm, but their thickness may deviate considerably from this. The thickness of the surface layers may be different on the inner and outer surface and the minimum value for thickness is determined mainly by whether the said surface layer is a wall-bearing structural element or not.
  • The surface layers of the laminated beams are preferably made tongued and grooved on the edges of the laminated beams to be mounted on top of one another which are directed at each other, whereupon on the upper edge of the lower laminated beam is preferably a tongue 5 and on the lower edge of the upper laminated beam is the corresponding groove 4. There may be one or more grooves 4 and corresponding tongues 5 adjacent to one another on the edge of each surface layer 2a, 2b. The laminated beam construction is in addition preferably provided with sealing means (not shown) on that side of it which comes inside the building, which sealing means seal the gap between the laminated beams to be placed on top of one another to prevent excess humidity from transferring to the insulating material. The sealing means may be, for example, a strip of plywood board which is positioned, for example, in a mounting slot (not shown) formed in the edge parts of the surface structures of the laminated beams mounted on top of one another, which are positioned opposite one another. As sealing means may also be used, for example, various elastic sealing tapes, which may conceivably be placed, for example, at the bottom of the groove of a laminated beam. The outer surface may also be provided with sealing means (not shown), to secure, e.g. rainwater from entering between the laminated beams.
  • The structural wool layer 3 preferably extends at least on one of its edges outwards from the surface layers 2a, 2b in elevation, as indicated by reference numeral 7 in Figure 1 on the lower edge of the lowest laminated beam. Layer 3 extends preferably on both edges outwards from the surface layers 2a, 2b, whereupon in the example of Figure 1, on the upper edge of the laminated beam, the extension may extend, for example, to the elevation plane determined by the tongues 5 or beyond it. Such extending outwards of the structural wool causes the gap 6 between the laminated beams 1 mounted on top of one another to be efficiently filled with thermal insulation material. The structural wool may extend outwards from the surface layer on one of its edges, for example, within the range from 5 to 20 mm. By positioning the structural wool in such a way that the fibres contained in it are essentially perpendicular to the inner surfaces of the wooden surface layers 2a, 2b which are against one another, a construction is achieved which receives wind loads well and on the other hand forms a flexible construction in elevation which allows the laminated beams to settle against one another and their natural subsiding during the first years without deteriorating their thermal insulation properties.

Claims (6)

  1. A laminated beam construction (1, 1', 1") comprising surface layers (2a, 2b) of wood material and between them an inner part (3) of insulating material, where the insulating material is structural wool glued to the surface layers, characterised in that in the structural wool (3), the fibres are essentially perpendicular to the surfaces of the surface layers (2a, 2b) directed at one another, and that the structural wool (3) extends at least on one of its edges (7) outwards from the surface layers (2a, 2b), forming a thermal insulation layer which fills the seam (6) between the laminated beams to be mounted on top of one another at the structural wool layer (3).
  2. A laminated beam construction as claimed in claim 1, characterised in that the laminated beam construction is provided with sealing means at least on one side, which ensure the sealing of the gap (6) between the laminated beams (1, 1', 1") mounted on top of one another to prevent excess humidity from transferring to the insulating material.
  3. A laminated beam construction as claimed in claim 2, characterised in that the sealing means are located on the surface layer which comes inside the building.
  4. A laminated beam construction as claimed in any of the above claims, characterised in that the surface layers (2a, 2b) are preferably made tongued and grooved (4, 5) on the edges of the laminated beams to be mounted on top of one another which are directed at each other.
  5. A laminated beam construction as claimed in any of the claims 1 to 4, characterised in that the surface layers (2a, 2b) are made of timber.
  6. A laminated beam construction as claimed in any of the claims 1 to 4, characterised in that the surface layers (2a, 2b) are made of wood panels laminated with each other.
EP11168069.0A 2010-06-15 2011-05-30 Laminated beam construction Not-in-force EP2397620B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FI20105688A FI20105688A (en) 2010-06-15 2010-06-15 Lamellihirsirakenne

Publications (3)

Publication Number Publication Date
EP2397620A2 true EP2397620A2 (en) 2011-12-21
EP2397620A3 EP2397620A3 (en) 2012-12-05
EP2397620B1 EP2397620B1 (en) 2017-07-12

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP11168069.0A Not-in-force EP2397620B1 (en) 2010-06-15 2011-05-30 Laminated beam construction

Country Status (2)

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EP (1) EP2397620B1 (en)
FI (1) FI20105688A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2581217A1 (en) * 2011-10-10 2013-04-17 Rockwool International A/S A laminate wooden profile for manufacturing a window frame or the like
WO2015169325A1 (en) 2014-05-08 2015-11-12 Algpeus Arne A layered insulated construction element
FR3022569A1 (en) * 2014-06-24 2015-12-25 Didier Goy BEAM WITH INTEGRATED INSULATION
RU181503U1 (en) * 2018-04-02 2018-07-17 Александр Викторович Скрябин Wall rack for frame construction
RU181502U1 (en) * 2018-04-02 2018-07-17 Александр Викторович Скрябин Corner post for frame construction

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE303580B (en) 1965-03-16 1968-09-02 Billeruds Ab
SE457456B (en) 1984-04-09 1988-12-27 Veikko Ilmari Hepokorpi Timber wall constituents

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2650915A1 (en) * 1976-11-06 1978-05-18 Ihlefeld Karl Helmut Fire-resistant building panels with mineral fibre core - bound to covering layers by protective layers of binding agent
DK139441B (en) * 1976-11-19 1979-02-19 Rockwool Int Insulation element for external insulation of an exterior wall.
GB2302346B (en) * 1996-02-21 1997-05-28 Rockwool Ltd Insulating material
CH692993A5 (en) * 1998-03-13 2003-01-15 Frinorm Ag Insulating component for wall
DE29923387U1 (en) * 1999-07-26 2000-08-24 Jaspers, Helmut, 49692 Cappeln Beam for building a wall of a log house
WO2003008724A1 (en) * 2001-07-17 2003-01-30 Saint-Gobain Isover A/S Flexible heat- and sound-insulating panel
DE102008030944A1 (en) * 2008-07-02 2010-01-07 Knauf Insulation Gmbh Carrying construction design element

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE303580B (en) 1965-03-16 1968-09-02 Billeruds Ab
SE457456B (en) 1984-04-09 1988-12-27 Veikko Ilmari Hepokorpi Timber wall constituents

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2581217A1 (en) * 2011-10-10 2013-04-17 Rockwool International A/S A laminate wooden profile for manufacturing a window frame or the like
WO2015169325A1 (en) 2014-05-08 2015-11-12 Algpeus Arne A layered insulated construction element
FR3022569A1 (en) * 2014-06-24 2015-12-25 Didier Goy BEAM WITH INTEGRATED INSULATION
EP2960390A1 (en) * 2014-06-24 2015-12-30 Beamblock SA Beam with integrated insulation
RU181503U1 (en) * 2018-04-02 2018-07-17 Александр Викторович Скрябин Wall rack for frame construction
RU181502U1 (en) * 2018-04-02 2018-07-17 Александр Викторович Скрябин Corner post for frame construction

Also Published As

Publication number Publication date
FI20105688A0 (en) 2010-06-15
FI20105688A (en) 2011-12-16
EP2397620A3 (en) 2012-12-05
EP2397620B1 (en) 2017-07-12

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