Building Board, Building Element or the Like

Abstract

The invention relates to a building board or a building element having a multilayer structure, preferably wood-based and consisting of at least three bonded to each other layers, wherein a layer ( 5 ) is made of a material, preferably wood-based, which consists of vertically oriented (fv) vertical fibres ( 50 ) and is formed as a core layer between two covering layers ( 3, 4 ) made of a layer, preferably wood-based, material, the vertical fibres ( 50 ) are oriented substantially in a vertical direction with respect to the main extension (ed) of the covering layers ( 3, 4 ), in the preferred embodiment, the vertical fibre layer ( 50 ) comprises a plurality of vertical cavities ( 6 ) which completely transverse said layer and are oriented in a direction (hv) in conformity with the vertical orientation (fv) of the vertical fibres ( 50 ) of the material, preferably wood, of which said layer ( 5 ) is made. A method for producing the inventive building boards and elements is also disclosed.

1 . A new building board or a new building element, in particular a structural element, wall element, facing element, support element or the like, having a multilayer structure, preferably wood-based or consisting of wood materials, which consist(s) of at least three bonded layers, layers, boards, sheets or the like, preferably having two covering layers which are spaced from one another and parallel to one another and having a core layer between them and connected with them,
 characterized in   that covering layers ( 3 ,  4 ), optionally multilayer, are formed between two, each with a flat, preferably compact, laminated, plate or sheet material, in particular from the group comprised of wood, wood materials, such as laminated wood, layerwood, wood chip material, metals, textiles and fibrous materials, cardboard, papers, plastics, fibre-reinforced plastics, mineral-based building materials, stone, artificial stone and composites of two or more of the aforementioned materials, as a core layer, containing a vertical fibre layer ( 5 ) comprised of vertical fibres ( 50 ), vertical filaments or the like with an essentially uniform vertical orientation (fv) or formed with them or a material of this type having a grain or fibre structure of this type, preferably of wood, whereby the vertical fibres ( 50 ) or the grains of the vertical fibre layer ( 5 ), preferably wood vertical fibre layer, is or are oriented essentially vertically or at a right angle to the main extension (ed) of the two covering layers ( 3 ,  4 ), and   wherein it is preferably provided,   that the vertical fibre layer ( 50 ), preferably a wood vertical fibre layer, is formed with a plurality thereof fully traversing them, with the vertical orientation (fv) of the vertical fibres ( 50 ) or grains of the material forming this layer ( 5 ), preferably wood, vertical cavities ( 6 ), recesses, millings, bores or the like having essentially corresponding or vertical orientation (hv) thereto or parallel to one another.   
   
   
       2 . The building board or building element or the like according to  claim 1 , characterized in that the vertical cavities in the vertical fibre layer ( 5 ) have the same area and/or cavity cross sections (Qh) having a geometric form. 
   
   
       3 . The building board or building element or the like according to  claim 1 , characterized in that the vertical cavities ( 6 ) in the vertical fibre layer ( 5 ) or in the vertical fibre bodies ( 51 ) forming them, are arranged in a matrix or grid-like manner and are preferably uniformly distributed. 
   
   
       4 . The building board or building element or the like according to  claim 1 , characterized in that the ratio of the totality of the cross-sectional areas (Qh) of the vertical cavities ( 6 ) in the vertical fibre layer ( 5 ) to the totality of the cross-sectional area(s) (Qm) of the vertical fibre material, preferably wood, forming the same, is between 5:1 and 1:5, preferably between 2:1 and 1:2. 
   
   
       5 . The building board or building element or the like according to  claim 1 , characterized in that the inner walls, and preferably also the base, of the vertical cavities ( 6 ) of the vertical fibre layer ( 5 ) are coated with an intumescent fireproof or fire-propagation retarding polymer substance, e.g. based on silicates containing structure water, which expand under the effect of heat in the case of fire and fill the vertical cavities ( 6 ). 
   
   
       6 . The building board or building element or the like according to  claim 1 ,
 characterized in   that the covering layers ( 3 ,  4 ) are formed with the same materials between them, preferably with identical wood and/or with the same material thicknesses (dd 3 , dd 4 ), or   that the covering layers ( 3 ,  4 ) are formed with various materials, as in particular with various types of wood and/or with various material thicknesses (dd 3 , dd 4 ), however with essentially the same, physical, optionally orientation-controlled, same variation behaviour or the like when environmental conditions change, as e.g. with changes in temperature, humidity or the like.   
   
   
       7 . The building board or building element or the like according to  claim 1 , characterized in that the vertical fibre layer ( 5 ) is formed with a plurality of vertical fibre bodies ( 51 ), preferably of wood, which are arranged adjacent to one another with at least two of their flank surfaces ( 55 ) having an orientation that corresponds to the vertical orientation (fv) of its vertical fibres ( 5 ) or grains and preferably bonded together so as to seal the material. 
   
   
       8 . The building board or building element or the like according to  claim 1 ,
 characterized in   that the vertical fibre bodies ( 51 ) formed with the vertical cavities ( 6 ) in the vertical fibre layer ( 5 ) are designed as vertical fibre body molds or strips ( 51 ) which are arranged in a row in a linear straight manner, preferably having the same width (bv),   which are arranged so as to be either directly longitudinally adjacent to one another and preferably bonded to one another,   whereby it is preferred in this case that the two covering layers ( 3 ,  3 ) are formed from compact wood chipboards or homogeneous boards without a distinct grain orientation, or   that, between adjacent strips ( 510 ) of this type, reinforcing or stiffening strips ( 7 ) are each arranged, adjoining their vertical longitudinal flank sides ( 511 ) facing one another, preferably bonded to them, and extending parallel to one another,   whereby, in this latter case, it is preferred if the two covering layers ( 3 ,  4 ) made of wood, whose grain or fibres is or are oriented parallel to one another, yet at a right angle to the direction of the grains extending in longitudinal direction (II) of the reinforcing strips ( 7 ).   
   
   
       9 . The building board or building element or the like according to  claim 1 ,
 characterized in   that the reinforcing or stiffening strips ( 7 ) have an elongated rectangular cross section and, in the event that they essentially have the same physical property-varying behaviour when the environmental conditions change in a direction at a right angle to the main extension (ed) of the covering surfaces ( 3 ,  4 ) as the vertical fibre body strips ( 510 ) or the vertical fibre layer ( 5 ) formed with them are bonded to the covering layers ( 3 ,  4 ) so as to seal the material with their upper and lower narrow edges ( 72 ).   
   
   
       10 . The building board or building element or the like according to  claim 1 ,
 characterized in   that the reinforcing or stiffening strips ( 7 ) have an elongated rectangular cross section and, in the event that they have the physical property-varying behaviour when the environmental conditions change in a direction at a right angle to the main extension (ed) of the covering surfaces ( 3 ,  4 ) or to their grains ( 70 ) other than the vertical fibre bodies ( 51 ) or the vertical fibre strips ( 510 ) or the vertical fibre layer ( 5 ) formed with them, they do adjoin the vertical fibre body strips ( 510 ) on both sides with their longitudinal side surfaces and are preferably bonded to them, however, they do not adjoin the covering surfaces ( 3 ,  4 ) on the inside with their two narrow side surfaces ( 72 ) and are not bonded to them and their narrow side surfaces ( 72 ) are spaced from the covering surfaces ( 3 ,  4 ) to such an extent in the diagonal to the grain expansion or the like when environmental conditions change to an extent corresponding to said strips.   
   
   
       11 . The building board or building element or the like according to  claim 1 ,
 characterized in   that the reinforcing or stiffening strips ( 7 ) are formed from a material, preferably wood, having fibres ( 70 ) or grains with an essentially uniform orientation (fl) in direction of the longitudinal extension (II), formed with said orientation of its grains, which is essentially at a right angle to the direction of the fibres or grains of the vertical fibre layer ( 5 ).   
   
   
       12 . The building board or building element or the like according to  claim 1 ,
 characterized in   that, in the preferred case, their two covering layers ( 3 ,  4 ) are formed with essentially the same orientation or parallel to one another (fd 3 , fd 4 ) of the fibres ( 30 ,  40 ) or grains of the material forming them, preferably the wood forming them—the reinforced or stiffening strips ( 7 ) in the vertical fibre layer ( 5 ) are arranged in their direction of longitudinal extension (II) such that the fibres ( 7 ) or the grains of the material forming them, preferably wood, extend or extends essentially at a right angle to the orientation (fd 3 , fd 4 ) of the fibres ( 30 ,  40 ) or grains of the two covering layers ( 3 ,  4 ).   
   
   
       13 . The building board or building element or the like according to  claim 1 ,
 characterized in   that the two covering layers ( 3 ,  4 ) are formed with essentially the same or parallel orientation (fd 3 , fd 4 ) of the fibres ( 30 ,  40 ) or grains of the material forming them, preferably wood.   
   
   
       14 . The building board or building element or the like according to  claim 1 ,
 characterized in   that the vertical fibre layer ( 5 ) or the vertical fibre bodies ( 51 ) or vertical body strips ( 510 ) forming it is/are formed from or with a conventional wood, e.g. oak, of or with a wood of this type with lower quality or of or with a light wood, e.g. balsa and okume wood, with a density in the range of 0.1 to 0.8 g/cm 3 .   
   
   
       15 . The building board or building element or the like according to  claim 1 ,
 characterized in   that the vertical fibre bodies ( 51 ) forming the vertical fibre layer ( 5 ) are formed with the same size and/or form and/or from or with the same materials, in particular from or with the same type of wood or wood of uniform quality.   
   
   
       16 . The building board or building element or the like according to  claim 1 ,
 characterized in   that the vertical fibre layer ( 5 ) is formed with vertical fibre bodies ( 51 ) arranged over their vertical sides ( 55 ) adjoining one another, in particular bonded to one another, each with an essentially ridge-like cross-sectional form with a ridge beam ( 53 ) and tooth extensions ( 52 ) projecting away from it, preferably at a right angle, whereby the tooth spaces ( 54 ) between them form the vertical cavities ( 6 ) of the vertical fibre layer ( 5 ).   
   
   
       17 . The building board or building element or the like according to  claim 16 ,
 characterized in   that the tooth spaces ( 54 ) of the vertical fibre bodies ( 51 ) are configured as grooves, channels or the like which are parallel to one another, preferably formed by milling, preferably having essentially the same depth, size or width or cross-sectional area and/or form.   
   
   
       18 . The building board or building element or the like according to  claim 16 ,
 characterized in   that the tooth spaces ( 54 ) of the vertical fibre bodies ( 51 ) or the vertical cavities ( 6 ) of the vertical fibre layer ( 5 ) essentially have an elongated rectangular cross-sectional shape, optionally with a rounded base, whereby the rectangular length is in a ratio to the width (5:1) to (1:1), preferably (5:2) to (4.3).   
   
   
       19 . The building board or building element or the like according to  claim 16 ,
 characterized in   that, in the case of the ridge-like form of the cross section of the vertical fibre bodies ( 51 ), the width (br) of the tooth spaces ( 54 ) is half to double the width (bz, bb) of the tooth extensions ( 52 ) and/or the ridge beam ( 53 ), however, that the just noted widths (br, bb, bz) are preferably essentially the same.   
   
   
       20 . The building board or building element or the like according to  claim 1 ,
 characterized in   that it is sealed on at least two opposite narrow side flanks, preferably on all, with cover moldings ( 2 ), preferably made of wood.   
   
   
       21 . The building board or building element or the like according to  claim 1 ,
 characterized in   that it is curved or arched, whereby the vertical fibre bodies ( 51 ), optionally arranged in more than one layer on top of one another, or the vertical fibre body strips ( 51 ) formed with them are bonded with their upper and lower sides to the first or lower curved covering layer ( 4 ) and to the second or upper covering layer ( 3 ) and vertical fibre bodies ( 51 ) or vertical fibre body strips ( 510 ) which are adjacent to one another—with a convex curvature or arching of the first covering layer ( 4 ) thereto—are arranged directly adjoining or adjacent with their lower longitudinal edges lying on this covering layer ( 4 ) and spread apart to the second or upper covering layer ( 3 ) at an acute angle, whereby elongated vacuums or gusset-like spaces expanding in a wedge-like manner to the second upper covering layer ( 3 ) are formed between them.   
   
   
       22 . The building element, in particular a light-construction support, beam, girder or the like according to  claim 1 ,
 characterized in   that the building element, in particular the support ( 1   X ) has essentially the same basic structure with covering layers ( 3 ,  4 ) and, between them, vertical fibre layer ( 5 ), optionally arranged in several layers, with vertical cavities ( 6 ) as the building boards ( 1 ),   whereby it is preferable that each of the covering layers ( 3 ,  4 ) is formed with at least two covering layers made of wood and bonded together so as to be flat, the at least one layer of which is formed with an orientation of the fibres of the wood forming it in direction of the longitudinal extension of the support ( 1   X ) or the like and the other layer of which is formed with an orientation of the fibres of the wood forming it in direction diagonally or at a right angle to the longitudinal extension of the support ( 1   X ) or the like,   wherein it is preferably further provided that the vertical fibre layer ( 5 ) is formed with vertical fibre body strips ( 50 ) extending essentially at a right angle to the longitudinal extension of the support ( 1   X ), and wherein a stiffening or reinforcing strip ( 7 ) which extends from covering surface ( 3 ) to covering surface ( 4 ), and with grains in vertical direction to the longitudinal extension of the support ( 1   X ) arranged between each of these strips ( 50 ) or between at least two layers of two or multiple strips formed from strips ( 50 ) of this type which are arranged adjacent to one another and on top of one another.   
   
   
       23 . The building board or building element or the like according to  claim 1 ,
 characterized in   that it is formed as a sound-absorbing or acoustic board, preferably made of wood, and either does not essentially have a covering plate toward the sound source or that its covering layer ( 4 ) facing the sound source is made with sound-transmitting openings ( 41 ) which passes through it, preferably arranged and formed corresponding to the respectively desired design and the vertical fibre layer ( 5 ) and its vertical cavities ( 6 ) are directly sound-accessible through these openings ( 41 ), whereby, for safety reasons, it is preferred if the inner walls of the vertical cavities is coated with a fireproof polymer substance that expands under the effect of heat in case of fire or is intumescent, or   that the building board ( 1 ) is configured as a vibration and resonance board, e.g. for floors and ceilings of sound-generating or sound-projecting equipment, as in particular speaker boxes, musical instruments or the like, whereby one of its covering surfaces ( 3 ,  4 ) can be optionally provided with sound-projecting openings and the vertical fibre layer ( 5 ) and its vertical cavities ( 6 ) are sound-radiating effective through these openings.   
   
   
       24 . The building board or building element or the like according to  claim 1 ,
 characterized in   that it is configured as a safety building board, e.g. as a door plate, with two covering layers ( 3 ,  4 ), made for example of wood or in particular of a wood material, and that the reinforcing or stiffening strips ( 7 ), preferably in hand, in the vertical fibre layer ( 5 ), preferably formed with wood, consist of metal, preferably steel, arranged at a distance from one another parallel to one another, and/or   that a metal plate, sheet or the like is glued to at least one of the wood covering layers ( 3 ,  4 ) on the outside, or that, in place of the wood covering layers, a metal plate, sheet or the like is directly bonded to the vertical fibre layer ( 5 ) in each case, whereby it is preferable that the metal plate, sheet or the like is bonded by means of an adhesive which is intumescent or expands under the influence of heat in the case of fire.   
   
   
       25 . The building board or building element or the like according to  claim 1 ,
 characterized in   that it is made as a heat-insulated heating building element ( 9   VI ) on the back, having heating pipes ( 76 ), tubes, conductors or the like on one side through which a heating medium can flow and which are installed in heating grooves ( 75 ) that are worked into the vertical fibre layer ( 5 ) formed with wood, preferably primarily in its reinforcing and stiffening strips ( 7 ), and extending along it, whereby the said grooves ( 75 ) and the heating pipes ( 76 ) or the like placed in them are covered toward the outside with the covering layers ( 3 ,  4 ).   
   
   
       26 . The building board or building element or the like according to  claim 1  comprising one of a wall, a partition, a covering element and a board with high heat, sound and footfall sound-absorbing action for new constructions, expansions and rehabilitation of buildings, rooms or the like,
 characterized in   that it is formed with at least two building boards ( 1 ,  1 ′) which are essentially identical to one another in their basic construction, are spaced from one another by means of spacers ( 91 ), preferably made of wood, and arranged parallel to one another, preferably formed with building boards ( 1 ,  1 ′) of the type whose two covering layers ( 3 ,  4 ) are made of wood, laminated wood, layerwood, wood chip material or the like and whose vertical fibre layer ( 5 ) also consists of wood, or   that it is formed with at least two building boards ( 1 ,  1 ′) which are essentially identical in their basic construction and directly joined together via their respective main surfaces, preferably by flat glueing, preferably with building boards ( 1 ,  1 ′) of the type whose two covering layers ( 3 ,  4 ) consist of wood, laminated wood, layerwood, wood chip material or the like and whose vertical fibre layer ( 5 ) also consists of wood.   
   
   
       27 . The building board or building element or the like according to  claim 1 ,
 characterized in that it is made with a preferably load-bearing building board ( 1 ) or with more than one building board ( 1 ) of this type bonded together so as to be flat, to which a fire-retarding board ( 1 ) with two covering layers ( 3 ,  4 ) built in a similar manner on at least one side to obtain the highest fire safety is bonded and with a vertical fibre layer ( 5 ) with vertical cavities ( 6 ) is formed between them, preferably with a not easily inflammable and burnable wood, e.g. oak, however, of low strength or thickness, in particular with 2 to 5 cm thickness, whereby the inner walls and possibly also the base of the vertical cavities ( 6 ) of the vertical fibre layer ( 5 ) are coated with a fireproof polymer substance which expands under the effect of heat in case of fire or is intumescent.   
   
   
       28 . The building board or building element or the like, in particular a wall, partition or cover element or board according to  claim 27 ,
 characterized in that it is designed with three building boards ( 1 ,  1 ′,  1 ″), each of which is spaced from one another by means of spacers ( 91 ), essentially as designed according to this claim, and at least basically arranged as noted there.   
   
   
       29 . The building board or building element or the like, in particular a wall, partition or cover element or board according to  claim 28 ,
 characterized in that the spacers ( 91 ) in the vacuums or spaces ( 90 ) between the building boards ( 1 ,  1 ′) are each formed with one or more bonded vertical fibre bodies ( 51 ) having the vertical cavities ( 6 ) and vertical fibres ( 50 ) or grains, preferably made of wood, and that they are arranged such that its grains also run essentially at a right angle to the main extension of the building boards ( 1 ,  1 ′).   
   
   
       30 . The building board or building element or the like according to  claim 1  comprising one of a wall, a partition, a cover element and a board with high heat, sound and footfall sound-absorbing action for new constructions, expansions and rehabilitation of buildings, rooms or the like,
 characterized in   that it is formed with at least two building boards ( 1 ,  1 ′) which are essentially identical to one another in their basic construction, are spaced from one another by means of spacers ( 91 ), preferably made of wood, and arranged parallel to one another, preferably formed with building boards ( 1 ,  1 ′) of the type whose two covering layers ( 3 ,  4 ) are made of wood, laminated wood, layerwood, wood chip material or the like and whose vertical fibre layer ( 5 ) also consists of wood, whereby the spacers ( 91 ) are formed by bodies having an open pore structure or free cavities, in particular by mineral or plastic-based foam or pore bodies or preferably by pipe pieces preferably oriented diagonally to the main extension (ed) of the covering layers ( 3 ,  4 ), and that the space ( 90 ), which is optionally provided with a steel reinforcement ( 92 ), is filled with a mineral-based, hardening or hardened bonding agent, in particular concrete, light-weight or cellular concrete ( 95 ) or the like between the building boards ( 1 ,  1 ′).   
   
   
       31 . The building board or building element or the like, in particular wall, partition or cover element or board according to  claim 30 ,
 characterized in   that the surfaces of the covering layers ( 3 ,  4 ) thereof which face the space ( 90 ) between the building boards ( 1 ,  1 ′) are provided with an adhesion-promoting layer ( 19 ), sanding, foil, net or the like for the adhesive connection of the binding agent, concrete, light-weight concrete or the like with the building boards ( 1 ,  1 ′) introduced into the space ( 90 ).   
   
   
       32 . The building board or building element or the like, in particular wall, partition or covering element or board ( 9 ) according to  claim 26 ,
 characterized in   that at least one of the covering layers ( 3 ,  4 ) of the building boards ( 1 ,  1 ′) is provided with a plaster-based layer, sheet, net ( 181 ) or the like on the outside which at least repels moisture, but preferably permits steam diffusion, in particular based on a plastic, e.g. an epoxy adhesive, with adhesion-increasing sanding or the like.   
   
   
       33 . The building board or building element or the like, in particular wall, partition or covering element or board according to  claim 26 ,
 characterized in that it is built directly at the building or installation site on site as a wall, partition or ceiling, the two building boards ( 1 ,  1 ′) being positioned as, connected to one another via the spacers ( 91 ) and planking boards of a “lost boarding” with a steel reinforcement inserted in the space ( 90 ) between them and the said space ( 90 ) is filled with concrete, light-weight concrete ( 95 ) or the like and at least one of the building boards ( 1 ,  1 ′) can be or is provided with a plaster and facing plaster layer ( 18 ).   
   
   
       34 . The building board or building element or the like, in particular wall, partition or cover element or board ( 9 ″′)
 characterized in that it is formed with a building board ( 1 ) according to  claim 1 , that an (inner) lining layer ( 190 ), preferably formed with at least one light-construction board, in particular with a gypsum board or a water or fire-resistant mineral board, optionally having fire-retarding and/or moisture and water-repelling properties, is joined to its at least one covering layer, preferably to its two covering layers ( 3 ,  4 ) on the outside.   
   
   
       35 . The building board or building element or the like, in particular wall, partition or covering element or board,
 characterized in that it is formed with a building board ( 1 ) according to  claim 1 , whose (inner) finishing layer ( 190 ) is provided with a plaster base ( 181 ) or with a finished plaster layer ( 18 ) comprising one.   
   
   
       36 . A method for producing a building board or a building element or the like according to  claim 1 , characterized in
 that, in a first step, parallel longitudinal grooves ( 60 ), extending in direction of the grain, are worked in longitudinally extending beams ( 58 ), steps, boards or the like made of wood or light wood, preferably corresponding to the ridge-like cross-sectional form of the vertical fibre bodies ( 51 ) with the vertical cavities ( 6 ) traversing them and provided for their formation, and the grooved beams ( 58 ) or the like thus obtained are each arranged in the arrangement or sequence: tooth extension ( 52 )—ridge beam ( 53 ) or side-by-side longitudinal flank—longitudinal flank adjacent to one another, joined together so as to seal the material to form vertical fibre body boards ( 580 ),   that, in a second step, the vertical fibre body boards ( 580 ) thus obtained are divided into a number of vertical fibre body strips ( 510 ) with the vertical cavities ( 6 ) or tooth spaces ( 54 ) that are open to one side by cuts (S) that lead diagonally to the extension of the longitudinal grooves ( 60 ), each corresponding to the desired thickness of the vertical fibre layer ( 5 ) uniformly spaced from one another,   that, in a third step—optionally or if desired after arranging the reinforcing or stiffening strips ( 7 ) between them—the vertical fibre body strips ( 510 ) are turned by 90° and either laterally adjoining one another with their longitudinal sides ( 511 ) or adjoining the tooth extension ( 52 )—ridge beam or, after application of an adhesive, bonded to one another and placed on a first layer ( 4 ) of the covering layers ( 3 ,  4 ) and bonded to it in such a way that the vertical cavities ( 6 ) and the vertical fibres ( 50 ) are oriented essentially at a right angle to the extension (ed) of this covering board ( 4 ), and   that, in a fourth step, the covering layer ( 3 ) still missing after an adhesive has been applied and bonded to the vertical fibre layer ( 5 ) is placed on the e.g. vertical fibre layer ( 5 ) which is still open to the top on one side with the cavities ( 6 ) there which are also still open.   
   
   
       37 . A method for producing a building board or a building element or the like according to  claim 1 , characterized in
 that, in a first step, parallel longitudinal grooves ( 60 ′), extending in direction of the grain, are worked into longitudinally extending boards ( 58 ′), beams, steps, or the like made of wood or light wood, preferably corresponding to the ridge-like cross-sectional form of the vertical fibre bodies ( 51 ) with the vertical cavities ( 6 ) traversing them and provided for their formation,   that, in a second step, the boards ( 58 ′) or the like provided with the longitudinal grooves ( 60 ′) adjoin one another along their longitudinal side flanks ( 55 ′) while forming a layer or first partial layer (TL 1 ) with their non-grooved or grooved main surfaces are deposited on a reinforcing strip layer ( 700 ) provided for the forming of the reinforcing strips ( 7 ), preferably made of wood, while bonding so as to seal the material to it laterally joined to one another,   that, at least in an intermediate optional step, at least one second partial layer (TL 2 ) of grooved boards ( 58 ′) or the like which also adjoin one another along their longitudinal side flanks ( 55 ′), is deposited on the first partial layer (TL 1 ) of grooved boards ( 58 ′), mutually offset with respect to their longitudinal side flanks ( 55 ′), and joined to the first partial layer TL 1 ,   that, in a third step, a further strip layer ( 700 ′) which is preferably similar to the strip layer ( 700 ′) already mentioned above, is attached to a third partial layer (TL 3 ), respectively bonded as the last one and to the previous partial layer (TL 2 ), also laterally offset again, and bonded to the last partial layer (TL 3 ),   that, in a fourth step, the plate-like initial body ( 580 ′) thus formed is divided into a number of vertical fibre body strips ( 510 ′), optionally each flanked on both sides by a stiffening strip ( 7 ′), by cuts (S) made essentially at a right angle to the longitudinal grooves ( 60 ′) and the grain of the partial layers (TL 1 , TL 2 , TL 3 ) or the grooved boards ( 58 ′) or the like forming them, each spaced (as) equidistantly from one another, and   that, in a fifth step, these vertical fibre body strips ( 510 ′) adjoin one another laterally or in the arrangement or series after an adhesive has been applied: tooth extension ( 54 )—ridge beam ( 53 ) placed on a layer ( 4 ) of the covering layers ( 3 ,  4 ) and in this way bonded to it, that the vertical cavities ( 6 ) are oriented essentially at a right angle to the extension (ed) of these covering plates ( 4 ), and   that, in a sixth step, after an adhesive has been applied, the still missing covering layer ( 3 ) is placed on the vertical fibre layer ( 5 ) which is still open to the top and bonded to the vertical fibre layer ( 5 ).   
   
   
       38 . The method according to  claim 37 , characterized in that the strip layers ( 700 ) are used with grains that conform to one another or are parallel, extending essentially at a right angle to the grain of the boards ( 58 ′) provided with the grooves ( 60 ′). 
   
   
       39 . Use of building boards or building elements or the like according to  claim 1 , either directly as light-weight, dividing and optionally supporting elements, such as in particular walls, partitions (intermediate) ceilings, (intermediate) floors and the like, for new constructions, reconstructions and expansions of, optionally mobile, buildings, in particular finished part buildings, or as facing boards or the like that are optionally used in the manner of a “lost boarding”, in particular as heating and sound-absorbing and insulating boards for buildings and building structures. 
   
   
       40 . Use of building boards or building elements or the like according to  claim 1  for furnishing buildings, building parts and rooms, attics, cellars and the like of buildings with heat and sound-insulating facings and linings. 
   
   
       41 . Use of building boards or building elements or the like according to  claim 1  with the proviso that it is formed with a vertical fibre layer ( 5 ), whose vertical cavities ( 6 ) are coated with a fireproof or fire-retarding substance which expands under the effect of heat in case of a fire or is intumescent, and/or that they are provided on at least one side with a fireproof mineral board bonded to it or similar fire-resistant coating or that at least one of its covering layers is formed directly with a fireproof mineral board of this type or the like, for furnishing buildings, building parts and rooms, attics, cellars and the like of buildings with fireproof and also heat and sound-insulating facings. 
   
   
       42 . Use of building boards or building elements or the like according to  claim 1  for interior furnishing of buildings and rooms, in particular for hinged and sliding doors, safety doors and the like. 
   
   
       43 . Use of building boards or building elements or the like according to  claim 1  for shipbuilding, boat and mobile home construction, trailer and camper building, in particular as “sandwich board” for light-weight furnishing of vehicles, ships, boats, mobile homes and the like, such as floors, facings, built-in elements, built-in furniture and the like. 
   
   
       44 . Use of building boards or building elements or the like according to  claim 1  for erecting halls, bunks, stands, superstructures and extensions of the fair, exhibition, presentation and market sector. 
   
   
       45 . Use of building boards or building elements or the like according to  claim 1  for furniture building as well as for interior architecture and building furnishing purposes. 
   
   
       46 . Use of building boards or building elements or the like according to  claim 1  for instrument making, preferably for resonance and vibration boards of sound-emitting equipment, such as loudspeaker boxes, in particular for ceilings and floors, of (string) instruments and the like.