Construction system
Patent Information
- Application Number
- PCT/EP2026/058017
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2025-03-24
- Filing Date
- 2026-03-22
- Publication Date
- 2026-10-01
Smart Images
Figure EP2026058017_01102026_PF_FP_ABST
Abstract
Description
[0001] Building system
[0002] The invention relates to a building construction system comprising at least one ceiling element and / or one wall element and / or one corner element and / or one connecting element as well as detachable coupling elements and a method for the reversible construction of a building using the building construction system.
[0003] When a building or other concrete structure becomes obsolete, whether due to obsolescence or because it no longer meets new usage requirements, it is usually demolished. The demolition material is disposed of in a landfill or, in more favorable cases, recycled. Demolition and recycling require a great deal of energy: According to Lünser, H. (Life Cycle Assessments in Bridge Construction, Birkhäuser, Basel 1999), demolition consumes approximately 275 megajoules per ton, and crushing concrete approximately 85 MJ / t (Weil, M., Jeske, U., Schebek, L. Use of Natural and Recycled Aggregates in Concrete Production, BR Building Material Recycling and Landfill Technology 19 (2003), No. 1, p. 10).
[0004] 30-41). For a structure with 1000 m 3For concrete, this equates to 2.5 x 275 = 690 gigajoules for demolition and 2.5 x 85 = 212 GJ for crushing. If the recycled material is used as aggregate in new concrete, the cement used is energy-intensive and produced using high-energy processes, resulting in significant CO2 emissions. On average, current firing technology requires 3500 kJ for 1 kg of clinker, producing approximately 600 kg of CO2 per ton of cement (German Cement Works Association, Activity Report 2005-2007, p. 10).
[0005] 24 and 49). Assuming a cement content of 300 kg / m³ 3 For concrete, the energy expenditure is 300 x 3500 = 1.05 GJ for one cubic meter of new concrete, resulting in 180 kg of CO2 emissions. An additional approximately 8 MJ / m³ are also produced. 3for mixing the concrete. Less drastic, but still relevant, is the resource and energy consumption involved in building with wood. Wood as a building material even binds CO2 and, when used in construction, acts as a CO2 sink. Once wooden buildings are demolished, the wood is usually incinerated, releasing the CO2 back into the atmosphere. At the same time, while wood is a renewable resource, it is not infinitely available, and indiscriminate deforestation would further damage the environment. The aforementioned environmental impacts—energy consumption and CO2 emissions—can be avoided if a building is designed to be dismantled without damage. Dismantling requires less energy than demolition, and if it were also possible to reuse building components as wholes, a great deal would be done for the environment.
[0006] In practice, there are component or building element systems that are either very design-defining, material-specific, cannot be dismantled without destruction, or only work for exactly one building design.
[0007] From DE 20 2022 105476 U1, a connecting element for the reversible coupling of several components is known, which is designed as a double truncated cone disc or a truncated cone with a cylindrical through-hole. Furthermore, a connecting set is disclosed which comprises at least one of the aforementioned connecting elements, at least one screw with a machine thread that can be inserted into the through-hole, and at least one threaded insert or at least one nut.
[0008] The invention is based on the objective of creating a building construction system and a method for the reversible construction of a building using the building construction system of the type mentioned above.
[0009] According to the invention, the problem is solved by the features of the independent claim.
[0010] The dependent claims represent advantageous embodiments of the invention.
[0011] A building system comprises at least one ceiling element and / or one wall element and / or one corner element and / or one connecting element, as well as detachable coupling elements. The ceiling elements, wall elements, corner elements, and connecting elements have grid holes for the coupling elements, and the coupling elements can be inserted into the grid holes for detachable coupling to connect ceiling elements (1) to corner elements, wall elements, and / or connecting elements, corner elements to wall elements and / or connecting elements, and / or wall elements to connecting elements. All elements are reusable as intended after the coupling elements have been removed. Ceiling elements, wall elements, corner elements, and connecting elements are components of the building system that can be connected to and separated from each other by the coupling elements.
[0012] Grid holes are conical holes in the components, their shape corresponding to the outer shape of a coupling element. This results in two different conical holes: one that widens towards the outside of the component and one that narrows towards the outside. To ensure even loading of the components and coupling elements, grid holes advantageously extend approximately half the length of a coupling element into the components to be coupled. The first hole in the component is supplemented by a threaded insert at its base, into which the coupling element is screwed through the hole in the other component. Together, a pair of these two hole shapes corresponds to the complete shape of the coupling elements. Due to their conical shape, the coupling elements provide a force-fit and form-fit connection.The boreholes are arranged in a periodically repeating pattern according to the construction grid. To connect two components, a coupling element projects through a hole in the first component into a hole in the second component and can be secured in its threaded insert. This allows all elements to be connected in various configurations. In a method for the reversible construction of a building using the building system, at least one ceiling element is detachably and reusablely connected to at least one wall element and / or at least one corner element and / or a connecting element using coupling elements inserted into grid boreholes.
[0013] This requires that the coupling elements can be inserted and accessed during the building's construction. This can be achieved through the grid drilling itself or by providing mounting holes. The invention describes a set of rules for building components such as ceiling elements, wall elements, corner elements, and / or connecting elements for building construction, ensuring the compatibility of these components and, in the future, their backward compatibility, while minimizing restrictions on design, material, and construction freedom. All components are connected to one another non-destructively and detachably by means of the coupling elements, allowing for easy disassembly and reinstallation in another building, which may have a different design but is constructed using components according to the same set of rules.
[0014] The system is based on a preferably square, horizontal construction grid on which wall elements and / or corner elements are arranged. In any direction perpendicular to an axis of this grid, a wall element or corner element can have a maximum wall thickness equal to half the grid dimension. Joints between two ceiling elements can only occur along the axes of this grid. Therefore, wall elements located along such joints between ceiling elements rest on both ceiling elements and can be connected to both ceiling elements via grid drill holes.
[0015] A subordinate, square, horizontal grid with the same axis spacing, but shifted by half this spacing in both directions, defines the maximum thickness of the wall and corner elements. More importantly, its intersections with the higher-level grid define all points where wall and corner elements can be joined. To allow for flexible combination of components and to limit the number of available components, the width and height of the wall elements, the width and length of the ceiling elements, and the height of the corner elements are preferably subject to a grid dimension. The heights of the wall and corner elements are based on the standard ceiling height. The width of the wall elements and the width and length of the ceiling elements have a uniformly defined grid size or a multiple thereof, such as double or triple that size.Because in prefabricated timber construction the defined construction grid size is 62.5 cm and this dimension is also part of the octametric masonry grid. ± This is currently the preferred grid size due to manufacturing constraints. This, in combination with the griddled arrangement of the drill holes, ensures that wall elements with corner elements, wall elements with ceiling elements, or ceiling elements with corner elements always fit together at their designated edges, regardless of their orientation, and can be connected using the coupling elements. This allows components to be arranged in very different ways, and different buildings can be created from the same group of components.
[0016] The individual components can not only be disassembled by loosening the coupling elements, but can also generally be reused without loss and as intended in a newly constructed building.
[0017] The new building can be freely designed according to the regulations and can consist of partly new and partly used elements, even from different original buildings. This allows buildings to be subsequently expanded with additional elements, individual elements to be replaced, or only parts of the building to be dismantled.
[0018] It is self-evident to the expert that the building components used are made of suitable materials, in particular the ceiling elements and / or wall elements and / or corner elements and / or connecting elements made of a wood-based material or concrete or the like.
[0019] The foundation can be constructed using strip foundations or point foundations with a crawl space. For example, steel beams are placed on point foundations, which then have the corresponding grid holes for attaching ceiling elements.
[0020] Foundation elements are designed to connect to ceiling elements from below, such as wall and corner elements. They form a strip foundation, similar to conventional masonry strip foundations. Foundation elements can have any cross-section, particularly rectangular or trapezoidal shapes. Foundation elements are not necessarily part of the building system, as, for example, a conventional foundation can also be used for adding stories to existing buildings, thus contributing to urban densification. The foundation elements can be connected to ceiling elements via grid holes using coupling elements, allowing for detachable and reusable connections.Preferably, the foundation elements have a base section and a head section with a reduced cross-section. The grid holes with associated mounting openings for inserting coupling elements are arranged in the head section and extend both towards the free head side and towards the free end faces perpendicular to it. The corner elements have the same height as the wall elements and, for connection with wall elements, either a T-shaped, cross-shaped, or angled, particularly right-angled, cross-section. Corner elements are always used where two to four wall elements meet at a specific angle to each other, with the corner elements determining the angle at which the wall elements run.
[0021] Ideally, connecting elements have the same height as wall elements and a rectangular cross-section for connection to wall elements. Therefore, wall elements with a narrow width, e.g., one grid length, can be used as connecting elements.
[0022] Following further development, corner elements and connecting elements feature grid holes on their free end faces. Two grid holes are oriented at right angles to each other, with one running parallel to an end face and the other parallel to a long side. These grid holes open into a mounting opening for inserting the coupling element. Mounting openings are openings in the components through which coupling elements can be inserted and used for connection. The grid holes are generally arranged in pairs and, in conjunction with a corresponding number of coupling elements, serve to connect adjacent components, i.e., wall elements, ceiling elements, and / or corner elements. The rectangular wall elements have grid holes that extend from mounting openings for inserting coupling elements towards the perimeter surfaces.The wall elements can be rectangular or square. At the corners of the wall elements, two perpendicularly aligned grid holes open into a mounting opening. These mounting openings serve primarily for inserting the coupling elements into the grid holes and for gripping them with a tool for assembly and disassembly.
[0023] Cable ducts can be arranged in the wall elements, running in a load-bearing layer or in a separate installation layer in front of the wall element. Cable ducts can also be arranged in corner and connecting elements, as well as ceiling elements, without departing from the scope of the invention. All these elements can have varying numbers of layers, with at least one load-bearing layer being arbitrarily combinable with an installation layer (cable ducts), an insulation layer, a ventilation layer, an interior cladding, and / or an exterior cladding.
[0024] Conical grid holes and threaded inserts are provided for connecting the wall elements. Accessibility for inserting the coupling devices for assembly and disassembly must, of course, be ensured.
[0025] Ceiling elements feature blind holes on both sides with threaded inserts and a longitudinal rebate on one of the ceiling surfaces. They can be detachably connected to wall elements, corner elements, and / or connecting elements using coupling elements. Prefabrication of the ceiling elements up to the point of cladding is possible. Naturally, in the case of a flat roof, the uppermost ceiling elements must be fitted with a non-prefabricated seal.
[0026] The building system according to the invention can be capped with either a flat or a steep roof. In one embodiment, wall section elements with grid holes for constructing a parapet on a flat roof can be detachably connected to ceiling elements using coupling elements. For flat roofs, only additional elements for the parapet are necessary. These are designed like cut-off wall elements. The height can be adjusted to the required parapet height. They are erected and fastened at the top like wall elements. The ceiling elements within the surrounding parapet are provided with conventional flat roof waterproofing on tapered insulation. In an alternative embodiment, for constructing a rafter roof, purlins with grid holes can be detachably connected to ceiling elements using coupling elements. Pitched roofs can be designed according to the building system according to the invention by, for example,These roofs are constructed as rafter roofs, where the lintel rests on a wall plate that is attached to the top floor ceiling using coupling elements. Essentially, triangular roof trusses are used. It is important that the lintel beams of the roof trusses cantilever sufficiently to allow for the maximum wall thickness, even at the eaves.
[0027] Following further development, the coupling elements comprise a conical sleeve with a coaxial bore into which a screw is inserted. The screw head, with a washer in between, is positioned on a large surface of the sleeve. The screw is captive to the sleeve at the end protruding beyond the small surface of the sleeve by means of a locking washer. The screw in the center is permanently but rotatably connected to the conical sleeve, which can also be described as a dowel. The sleeve is held on the screw by the locking washer, which can also be designed as a retaining ring. During disassembly, when the screw is unscrewed from the corresponding threaded bushing, the sleeve is loosened relative to the grid bore, overcoming the initial friction. After loosening, the entire coupling element can be removed through the mounting opening, for example, using a magnet to pry the grid bore open.
[0028] In the building system according to the invention, the components and coupling elements can be present individually or in a prepared state, for example partially connected to each other.
[0029] The invention also relates to a building which was constructed using the building construction system according to the invention.
[0030] The invention also relates to a component selected from the group consisting of a wall element, a ceiling element and a corner element, wherein the components have conical grid bores at regular intervals.
[0031] The invention also relates to the coupling element described above, in particular a coupling element comprising a conical sleeve with a coaxial bore into which a screw is inserted, the screw head of which is associated with a large sleeve surface by means of a washer, wherein the screw is captively connected to the sleeve at the end projecting beyond the small sleeve surface by means of a locking washer, which may also be ring-shaped.
[0032] It is understood that the features mentioned above and those to be explained below can be used not only in the combinations specified, but also in other combinations. The scope of the invention is defined by the claims. The invention is explained in more detail below with reference to an exemplary embodiment and the accompanying drawing.
[0033] They show:
[0034] Fig. 1 shows a top view of a ceiling element of a building system according to the invention,
[0035] Fig. 2 shows a front view of the ceiling element according to Fig. 1.
[0036] Fig. 3 shows a side view of the ceiling element according to Fig. 1 ,
[0037] Fig. 4 shows a front view of a wall element of the building system,
[0038] Fig. 5 shows a side view of the wall element according to Fig. 4.
[0039] Fig. 6 shows a side view of a corner element of the building system,
[0040] Fig. 7 shows a top view of the corner element according to Fig. 6,
[0041] Fig. 8 is an isometric representation of a foundation element of the building system,
[0042] Fig. 9 is an isometric representation of a wall section element of the building system,
[0043] Fig. 10 is a schematic representation of a pitched roof of the building system, Fig. 11 is a schematic representation of a supplementary element of the building system,
[0044] Fig. 12 shows a perspective view of a coupling element of the building system,
[0045] Fig. 13 shows a sectional view of the coupling element according to Fig. 12.
[0046] Fig. 14 shows a schematic representation of a building corner,
[0047] Fig. 15 is an enlarged view of detail XV according to Fig. 14 and
[0048] Fig. 16 shows an enlarged view of detail XVI according to Fig. 15. The ceiling element 1 according to Figs. 1 to 3 has a width a, for example approximately 1250 mm, and its length b is dimensioned such that b is a multiple of a. In the present embodiment, the length is approximately 2500 mm. The thickness c of the ceiling element 1 meets the static requirements and is at least approximately 120 mm. For connection to other components, the ceiling element 1 has grid holes 2 arranged at predetermined intervals, which are conically shaped for centering the component to be connected. Furthermore, the grid holes 2 of the ceiling element 1 are designed as blind holes and fitted with a threaded insert 3, which has a metric internal thread. It is evident that inch threads or the like can also be used without departing from the scope of the invention.The two parallel longitudinal sides 4 of the ceiling element 1 are provided with a rebate 5 on one side. Practical application has shown that ceiling elements 1 according to Figs. 1 to 3 can also be dimensioned in any direction as a multiple of the construction grid dimension, e.g. approx. 62.5 cm.
[0049] The folds 5 in the ceiling elements 1 or the strips to be inserted therein can ensure the statically necessary diaphragm effect of the ceiling when several ceiling elements 1 are used.
[0050] Figures 4 and 5 show a wall element 6. Within the scope of the invention, the wall elements 6 used always have a width a / 2, for example 625 mm, plus any integer multiple of a. The thickness c of the wall elements 6 should be at least 70 mm and at most 312.5 mm (a / 4) in every direction from the central axis on the construction grid, i.e., a total thickness between 140 mm and 625 mm (a / 2). The thickness c need not necessarily be symmetrical in both directions with respect to the central axis, i.e., a principal or longitudinal axis. Within the scope of the invention, wall elements 6 are preferably, but not exclusively, used in two heights, namely 2700 mm and 3600 mm. In particular, wall elements 6 include cable ducts (not shown) which can run in a load-bearing layer or in an upstream installation level.
[0051] Practical application has shown that wall elements 6 can also have a width of any multiple of the construction grid dimension, e.g., 62.5 cm. For connecting the wall elements 6 to other adjacent components, conical grid bores 2 with threaded inserts 3 are provided, which are open towards the circumferential side 9, the cone tapering towards the threaded insert 3 for centering when a coupling element 7 is screwed in. Conical grid bores 2 are also arranged on the narrow sides 8, tapering towards the associated circumferential side 9. The conical grid bores 2 are arranged in pairs, as can be seen particularly in Fig. 5. Here, a pair arranged on a vertical side comprises a grid bore 2 as a blind hole with a threaded insert 3 and a grid bore 2 extending through to the mounting opening 10, which tapers towards the circumferential side.The pairs of grid holes 2, which point towards the ceiling elements 1, i.e. in a mounting position upwards and downwards, taper towards the outer edge and do not include a threaded insert 3.
[0052] To insert the coupling elements 7 into the grid holes 2, which are spaced at intervals corresponding to the grid holes 2 in the adjacent component to be mounted, mounting openings 10 are provided. These openings should be located approximately 60 mm to 100 mm from the adjacent circumferential side 9 and should be approximately 100 mm x 100 mm in size, depending on the size of the coupling element 7. Access for inserting the coupling elements 7 can also be achieved through the design itself and does not necessarily require mounting openings 10.
[0053] Figures 6 and 7 show a corner element 11. Corner elements 11 are always used where two to four wall elements 6 meet at a certain angle.
[0054] The corner elements 11 determine the orientation of the connected wall elements 6 and are either angled, T-shaped, or cross-shaped in cross-section and have the same height as the wall elements 6 to be connected. Corner elements 11 are approximately 312.5 mm (a / 4) long along their principal axes, which lie on the underlying construction grid, in each direction in which a wall element 6 connects. The grid bores 2 of the corner elements 11 are arranged in pairs, with one grid bore 2 of such a pair being fitted with a threaded insert 3. The thickness c of the legs 12 of the corner elements 11 corresponds to the thickness c of the wall elements 6 to be coupled.
[0055] In the area of the grid holes 2, mounting openings 10 are provided for inserting the coupling elements 7 into the corner elements 11. Access for inserting the coupling elements 7 can also be achieved through the design itself and does not necessarily have to be ensured by mounting opening 10.
[0056] Fig. 8 shows a foundation element 13 with a base section 14 and a head section 15 with a reduced cross-section. The grid holes 2 with associated mounting openings 10 for inserting the coupling elements 7 are arranged in the head section 15 and extend both towards the free head side and towards the free end faces perpendicular to it. Foundation elements 13 can be connected from below to ceiling elements 1, which then serve as the floor, as well as to wall elements 6 and corner elements 11, via the grid holes 2 using the coupling elements 7, thus forming a type of strip foundation.
[0057] To create a flat roof, only additional wall section elements 16 (see Fig. 9) are required for the parapet. These wall section elements 16 are constructed like cut-off wall elements 6, with the height being adjustable to the required parapet height. The wall section elements 16 are placed on top of ceiling elements 1 and fastened through the grid holes 2 using the coupling elements 7, just like the wall elements 6. The ceiling elements 1 within the surrounding parapet are fitted with conventional flat roof waterproofing on a tapered insulation layer.
[0058] A rafter roof 16, as shown in Fig. 10, rests with its beam 18 on a sill plate 19, which has grid holes 2 for connection to the ceiling elements 1 by means of the coupling elements 7. Triangular roof beams 20 can be provided in system-compatible spans, with the beams 18 of the roof beams 20 projecting sufficiently far to allow the maximum wall thickness even at the eaves.
[0059] A supplementary element 21 can be used on an exterior wall of a building. Since the joints of the ceiling elements 1 are designed to always be located centrally under a wall, a gap is created on the exterior wall, vertically between the wall elements 6, where no further ceiling element 1 connects. This gap is filled by the supplementary elements 21, which can also transfer the loads of the upper wall element 6 to the wall element 6 below it. The supplementary elements 21 have the same height as the corresponding ceiling elements 1 and are designed with the same grid holes and threaded inserts 3 for attaching the coupling elements 7 as the ceiling elements 1.
[0060] The coupling elements 7 used are shown in Figures 12 and 13. The coupling element 7 comprises a conical sleeve 22 with a coaxial bore 23 into which a screw 24 is inserted, the screw head 25 of which is associated with a large sleeve surface with the interposition of a washer 26, wherein the screw 24 is captive connected to the sleeve 22 at the end projecting beyond the small sleeve surface by means of a locking washer 27, which may also be ring-shaped.
[0061] When the screw 24 of the coupling element 7 is unscrewed from the threaded insert 3, the conical sleeve 22 is released from the grid bore 2 due to the locking washer 27, and the coupling element 7 can then be removed via the mounting opening 10 and reused, as can all components described in the exemplary embodiment.
[0062] Figures 14 to 16 show an exemplary connection of several building elements. Here, for example, a ceiling element 1 on the underside is coupled to a corner element 11 and two wall elements 6 connected to the corner element 11.
[0063] It is particularly important to note that coupling elements 7 are always used in pairs. For example, when connecting ceiling elements 1 and wall elements 6, this ensures that if two ceiling elements 1 meet a wall element 6, both ceiling elements 1 can be connected to the wall element 6 and rest against it properly.
[0064] The coupling elements 7 are arranged in pairs between two wall elements 6, mirrored to each other, so that, for example, wall elements 6 forming interior walls can be rotated flexibly. Furthermore, the interfaces between the wall elements 6 always look the same, and it is impossible for two mismatched interfaces to meet.
[0065] Reference sign
[0066] 1. Ceiling element 17. Rafter roof 2. Grid drilling 18. Beam
[0067] 3. Threaded insert 19. Foot plate
[0068] 4. Long side 20. Roof rack
[0069] 5. Fold 21. Supplementary element 6. Wall element 22. Sleeve
[0070] 7. Coupling element 23. Bore
[0071] 8. Narrow side 24. Screw
[0072] 9. Perimeter side 25. Screw head 10. Mounting opening 26. Washer 11. Corner element 27. Locking washer 12. Leg
[0073] 13. Foundation element
[0074] 14th foot section
[0075] 15. Head section a Width
[0076] 16. Wall section element b Length
[0077] c strength
Claims
Patent claims 1. Building system with at least two components selected from the group consisting of • one or more wall elements (6), • one or more ceiling elements (1) • one or more corner elements (11 ), • one or more connecting elements, and detachable coupling elements (7), wherein the at least two elements have conical grid bores (2) for the coupling elements (7), wherein the coupling elements (7) serve for detachable coupling in the grid bores (2) to connect ceiling elements (1) with corner elements (11), wall elements (6) and / or connecting elements, corner elements (11) with wall elements (6) and / or connecting elements and / or wall elements (6) with connecting elements.
2. Building system according to claim 1, characterized in that corner elements (11) have grid holes (2) in the area of their free end faces, wherein two grid holes (2) are aligned perpendicular to each other such that one grid hole (2) runs parallel to an end face and one grid hole (2) runs parallel to a longitudinal side and accessibility for inserting the coupling elements (7) is ensured.
3. Building system according to one of claims 1 and 2, characterized in that wall elements (6) have a width that is any multiple of the grid dimension, and their thickness is any between approximately 140 mm and approximately 625 mm.
4. Building construction system according to one of claims 1 to 3, characterized in that the wall elements (6) and corner elements (11) do not have the same thickness.
5. Building construction system according to one of claims 1 to 4, characterized in that ceiling elements (1) have grid holes (2) on both sides designed as blind holes with threaded inserts (3) for connection to wall elements (6), corner elements (11) and / or connecting elements by means of coupling elements.
6. Building system according to one of claims 1 to 5, characterized in that wall section elements (16) have grid bores (2) for connection with ceiling elements (1) and further wall elements (6) and / or corner elements (11) and / or wall section elements by means of coupling elements (7) for the production of an attic of a flat roof.
7. Building system according to one of claims 1 to 6, characterized in that, for the production of a rafter roof, the foot purlins (19) have grid bores (2) for connection by means of coupling elements (7) with ceiling elements (1).
8. Building system according to one of claims 1 to 7, characterized in that the coupling elements (7) comprise a conical sleeve (22) with a coaxial bore (23) into which a screw (24) is inserted, the screw head (25) of which is associated with a large sleeve surface with the interposition of a washer (26), wherein the screw (24) is captive connected to the sleeve (22) by means of a locking washer (27) at the end projecting beyond the small sleeve surface.
9. Building construction system according to claims 1 to 8, characterized in that wall elements (6) are connected to ceiling elements (1) or wall elements (6) to corner elements (11) or ceiling elements (1) to corner elements (11) in a form-fitting and force-fitting manner and prestressed by means of a coupling element (7).
10. Method for the reversible construction of a building using the building construction system according to any one of claims 1 to 9, wherein at least two components are selected from the group consisting of • one or more wall elements (6), • one or more ceiling elements (1) • one or more corner elements (11 ), • one or more connecting elements, are connected by coupling elements (7) inserted in conical grid holes (2) in the components to be connected.
11. Method according to claim 10, characterized in that the coupling elements (7) are inserted into the conical grid bores (2), wherein the screws (24) of the coupling elements (7) are screwed to threaded inserts (3) anchored in grid bores (2).
12. Method according to claim 10 or 11, characterized in that when the screw connection is loosened due to the locking washer (27) attached to the screw (24), the conical sleeve (22) is released in the grid holes (2) and the coupling element (7) is removed.
13. Method according to one of claims 10 to 12, characterized in that coupling elements (7) are arranged in pairs at the connection points.