Building block for wall construction

Abstract

Building block for forming a wall construction, including insulating material and vertical load-bearing walls extending from one longitudinal side towards another longitudinal side of the building block, where the insulating material is provided with recesses for accommodating and holding the load-bearing walls in position, where inner part of the insulating material and the load-bearing walls are provided with recesses for accommodating at least one longitudinal reinforcing element binding the load-bearing walls together in longitudinal direction of the building block for forming an inner core where the vertical load-bearing walls, insulating material and the at least one reinforcing element together form the basic load-bearing in the building block, and that the building block includes at least one outer core formed by parts of insulating material and load-bearing walls outside the at least one reinforcing element, where the at least one outer core has supplementing and reinforcing properties for the inner core.

Claims

1. Building block (11) for forming a wall construction (100), which building block (11) includes insulating material (30) and vertical load-bearing walls (21) extending from one longitudinal side (12, 13) of the building block (11) and towards another longitudinal side (12, 13) of the building block (11), where the insulating material (30) is provided with recesses (31) for accommodating the load-bearing walls (21) for holding them in position, characterized in that an inner part of the insulating material (30) and load-bearing walls (21) are provided with recesses (32) for accommodating at least one longitudinal reinforcing element (40) binding the load-bearing walls (21) together in a longitudinal direction of the building block (11) for forming an inner core (20) where the load-bearing walls (21), insulating material (30) and the at least one reinforcing element (40) together form the basic load-bearing in the building block (11), and that the building block (11) includes at least one outer core (50) formed by parts of the insulating material (30) and the load-bearing walls (21) outside the at least one reinforcing element (40), where the at least one outer core (50) has supplementing and reinforcing properties for the inner core (20), characterized by that the building block (11) is provided with a centrally longitudinal recess (33) at a lower side adapted for accommodating a groundsill (80) or support beams (84), provided with a centrally longitudinal recess (33) at an upper side for accommodating a top sill (82) or support beam (84), or at both upper side and underside, where recesses (32) for longitudinal reinforcing elements (40) are arranged inside the centrally longitudinal recess (33).

2. Building block according to claim 1, characterized by that the outer core(s) (50) of the building block (11) form(s) together or separately on each side of the inner core (20) stabilization for the inner core (20) where the torsional effect and the vertical forces are further reinforced for the inner core (20) of the building block (11).

3. Building block according to claim 1, characterized in that the at least one reinforcing element (40) extends over groups of load-bearing walls (21) at one side of the building block (11) and/or extends over several groups of load-bearing walls (21) from both sides of the building block (11).

4. Building block according to claim 3, characterized in that the at least one longitudinal reinforcing element (40) extends over load-bearing walls (21) overlapping each other in the inner core (20) from both sides of the building block (11).

5. Building block according to claim 1, characterized by that load-bearing walls (21) of the building block (11) are arranged in a pattern of load-bearing walls (21) being dividable in two.

6. Building block according to claim 1, characterized in that building block (11) is provided with recesses (32) for reinforcing elements (40) and reinforcing elements (40) at both upper side and underside of the building block (11).

7. Building block according to claim 1, characterized in that the load-bearing walls (21) are fixed to the insulating material (30) by means of gently expanding glue or that the load-bearing walls (21) are embedded within the insulating material (30).

8. Building block according to claim 1, characterized in that the load-bearing walls (21) have an extension: in a plane perpendicular to the longitudinal direction of the building block (11), or in a plane having an inclined angle in relation to the longitudinal direction of the building block (11).

9. Building block according to claim 8, characterized in that the load-bearing walls (21) from one side of the building block (11) have a longer extension than load-bearing walls (21) from the other side of the building block (11).

10. Building block (11) for forming a wall construction (100), which building block (11) includes insulating material (30) and vertical load-bearing walls (21) extending from one longitudinal side (12, 13) of the building block (11) and towards another longitudinal side (12, 13) of the building block (11), where the insulating material (30) is provided with recesses (31) for accommodating the load-bearing walls (21) for holding them in position, characterized in that an inner part of the insulating material (30) and load-bearing walls (21) are provided with recesses (32) for accommodating at least one longitudinal reinforcing element (40) binding the load-bearing walls (21) together in a longitudinal direction of the building block (11) for forming an inner core (20) where the load-bearing walls (21), insulating material (30) and the at least one reinforcing element (40) together form the basic load-bearing in the building block (11), and that the building block (11) includes at least one outer core (50) formed by parts of the insulating material (30) and the load-bearing walls (21) outside the at least one reinforcing element (40), where the at least one outer core (50) has supplementing and reinforcing properties for the inner core (20), characterized in that the building block (11) is provided with at least one longitudinal drainage channel (60, 60a-b) arranged in connection with the recesses (32) for the reinforcing elements (40), which drainage channel (60, 60a-b) are provided with drainage holes (61a-d) extending to each side of the building block (11).

11. Building block (11) for forming a wall construction (100), which building block (11) includes insulating material (30) and vertical load-bearing walls (21) extending from one longitudinal side (12, 13) of the building block (11) and towards another longitudinal side (12, 13) of the building block (11), where the insulating material (30) is provided with recesses (31) for accommodating the load-bearing walls (21) for holding them in position, characterized in that an inner part of the insulating material (30) and load-bearing walls (21) are provided with recesses (32) for accommodating at least one longitudinal reinforcing element (40) embedded within the insulating material (30) binding the load-bearing walls (21) together in a longitudinal direction of the building block (11) for forming an inner core (20) where the load-bearing walls (21), insulating material (30) and the at least one reinforcing element (40) together form the basic load-bearing in the building block (11), and that the building block (11) includes at least one outer core (50) formed by parts of the insulating material (30) and the load-bearing walls (21) outside the at least one reinforcing element (40), wherein the at least one outer core (50) has supplementing and reinforcing properties for the inner core (20) and the reinforcing elements (40) are formed by two parts in the form of a female part (41) and a male part (42) which are arranged in the recesses (32), which female part (41) and male part (42) are adapted for mutual engagement for forming a click-system.

12. Building block (11) for forming a wall construction (100), which building block (11) includes insulating material (30) and vertical load-bearing walls (21) extending from one longitudinal side (12, 13) of the building block (11) and towards another longitudinal side (12, 13) of the building block (11), where the insulating material (30) is provided with recesses (31) for accommodating the load-bearing walls (21) for holding them in position, characterized in that an inner part of the insulating material (30) and load-bearing walls (21) are provided with recesses (32) for accommodating at least one longitudinal reinforcing element (40) embedded within the insulating material (30) binding the load-bearing walls (21) together in a longitudinal direction of the building block (11) for forming an inner core (20) where the load-bearing walls (21), insulating material (30) and the at least one reinforcing element (40) together form the basic load-bearing in the building block (11), and that the building block (11) includes at least one outer core (50) formed by parts of the insulating material (30) and the load-bearing walls (21) outside the at least one reinforcing element (40), wherein the at least one outer core (50) has supplementing and reinforcing properties for the inner core (20) and the at least one reinforcing element (40) is provided with fastening means for forming fastening points for side plates or cover plates (70) and that the insulating material (30) is provided with a through hole or tube (72) for accommodating corresponding fastening means (71) arranged to the side plates or cover plates (70), where the fastening means of the reinforcing element (40) and fastening means of the side plates or cover plates (70) are provided with a click-system for mutual fastening.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

(1) In the following the present invention will be described in further detail with references to the attached drawings, where:

(2) FIG. 1a is a principle drawing of a building block according to a first embodiment of the present invention,

(3) FIG. 1b shows further details of the first embodiment,

(4) FIG. 1c shows details of reinforcing elements forming a click-system,

(5) FIG. 1d shows the building block in FIG. 1, seen from above,

(6) FIG. 2a-c are principle drawings of formation of groups of load-bearing walls in the building blocks,

(7) FIG. 3 is a principle drawing of a building block according to a further embodiment of the present invention provided with reinforcing elements at the end sides,

(8) FIG. 4a-d show different structures of a wall construction with building blocks according to the present invention with side plates/cover plates of different sizes,

(9) FIG. 5a-b show different embodiments of a building block for special adaption,

(10) FIG. 6 show a building block provided with recesses for use of an alternative lock mechanism for arrangement of building blocks to each other, and

(11) FIG. 6a-6d show ground sills and top sills with a building block according to another embodiment, and

(12) FIG. 7a-8b show building blocks incorporating windows and doors in another embodiment.

DETAILED DESCRIPTION

(13) Reference is now made to FIG. 1a which is a principle drawing of a building block 11 according to a first embodiment of the present invention illustrating the principles of the present invention, FIG. 1b showing details of the first embodiment and FIG. 1d showing a view from above. The building block 11 is formed by an inner structure or core 20 which is formed by vertical load-bearing walls 21 in the form of thin laths, insulating material 30 of a type with high compressive strength/sustains high load in vertical and horizontal direction provided with recesses 31 for accommodating the load-bearing walls 21, which typically are glued with a gently expanding glue or casted into the insulating material 30 and therethrough securely fixed thereto, and at the same time ensures that it is completely sealed around the insulating material 30 and the load-bearing walls 21. Examples of suitable materials for the insulating material 30 is XPS (extruded polystyrene), EPS (expanded polystyrene) or similar, also known as Styropool or Styrofoam.

(14) The inner structure or core 20 is further formed by at least one longitudinal reinforcing element 40 adapted for being arranged in recesses 32 extending down in both the insulating material 30 and the load-bearing walls 21. In the shown example, the use of two reinforcing elements 40 and two recesses 32 is shown. The recesses 32 and reinforcing elements 40 are adapted to each other such that when two building blocks 11 are arranged on top of each other, the recesses 32 correspond to the height of the reinforcing element 40. As shown in FIG. 1a, the building block 11 will be provided with recesses 32 in the insulating material 30 and load-bearing walls 21 at both upper and lower side of the building block 11. In the inner structure it is the load-bearing walls 21 (laths) which provide the load-bearing function horizontally, while the insulating material 30 holds the load-bearing walls (laths) 21 in position and the longitudinal reinforcing elements 40 are binding the load-bearing walls 21 together, and that the longitudinal reinforcing elements 40 will contribute to a part of the horizontal load-bearing. In this way, the building block 11, by the insulating material 30 together with the load-bearing walls 21 and the longitudinal reinforcing elements 40 is self-supporting; both as individual block and at the same time as fundament for building blocks being arranged thereon, which will be further described below.

(15) In the example the load-bearing walls 21 extend mainly perpendicularly out from the respective longitudinal side 12, 13 of the building block 11, in a direction towards the opposite longitudinal side 12, 13. The load-bearing walls 21 have an extension in vertical direction which corresponds to the height of the building block 11 and have an extension in width-direction of the building block 11 being shorter than the distance between the longitudinal sides 12, 13 of the building block 11 for avoiding formation of thermal bridges, so that there always is insulating material 30 between the longitudinal sides 12, 13 of the building block 11. The number of load-bearing walls 21 and dimension of the load-bearing walls 21 are adapted to the desired properties/strength for the building block 11.

(16) Further, the building block 11 is formed by at least one outer structure or core 50, in the example two outer cores 50, one on each side of the inner core 20. The outer structure or core 50 is formed by the parts of the load-bearing walls 21 and insulating material being outside the reinforcing elements 40. In this way the outer part of the load-bearing walls 21 (laths) and insulating material 30 form together or individually, at each side of the inner core 20, stabilization for the inner core 20 where the torsional effect and vertical forces are further reinforced, for the inner core 20 of the building block 11.

(17) The horizontal load-bearing of the building block 11 is provided by the inner core 20 which overlap each other from both sides by that the load-bearing walls 21 overlap each other in width-direction of the building block 11, where the inner parts with the reinforcing elements 40 in recesses 32 in the insulating material 30 and the vertical walls 21 (laths) binding the load-bearing walls 21 (laths) together such that they are positioned in a fixed and stable position together with the reinforcing elements 40.

(18) The load-bearing walls 21 (laths) can be arranged in different patterns or designs, where the load-bearing horizontal forces are determining for the assembly, and where the reinforcing elements 40 are adapted to the inner core 20 and where the assembly does not provide a worse result than a solution with load-bearing walls 21 (laths) arranged in the middle of the building block 11 with similar outer cores 50.

(19) Reference is now made to FIGS. 2a-c showing principle drawings disclosing further details of the present invention. The load-bearing walls 21 arranged in the insulating material 30 are arranged so that they form groups of at least two load-bearing walls 21, either at one side of the building block 11 or at both sides of the building block 11 which increase the strength of the building block 11. FIG. 2a shows five different examples of what can be considered as a group (denoted with a dotted ring) even though it can be construed innumerable examples of this. In FIG. 2b there are shown examples of how the reinforcing elements 40 are contributing in forming the groups. The longitudinal reinforcing elements 40 can extend over a group formed by two or more load-bearing walls 21 at the same side of the building block 11, or extend over groups of load-bearing walls 21 formed from both sides of the building block 11. In this way the reinforcing elements 40 will exchange the pressure/load point between the load-bearing walls 21 forming groups. As shown in FIG. 2b the reinforcing elements 40 can extend the entire building block 11, over only one group, or over several groups. The reinforcing element 40 will also contribute to making the building block more torsional stable. In the most cases the building block 11 will have at least one reinforcing element 40 extending the entire length of the building block 11.

(20) In FIG. 2c it is shown an example of how groups are formed by inclined load-bearing walls 21, with and without reinforcing elements 40. It should be mentioned that inclined load-bearing walls 21 will at formation of groups provide a larger area for the group than if the load-bearing walls 21 are arranged as in FIGS. 2a-b, at the same time as it will make the building block 11 more directionally stable, by that the groups then are capable of accommodating forces in two directions, i.e. horizontally and vertically, as shown in the last drawing in FIG. 2c.

(21) How the load-bearing walls 21 are arranged, the pattern of the groups and the use of reinforcing elements 40 will depend on the size of the building block 11 and the requirements for the strength of the building blocks 11.

(22) In the embodiment shown in FIGS. 1a-b the reinforcing element is duplex in the form of a female part 41 and a male part 42, as shown in detail in FIG. 1c. The female part 41 exhibits a mainly U-shape which narrows some in at the opening and is adapted to accommodate the male part 42, which e.g. is shaped with a base 43 where there centrally are arranged two longitudinal upwards from the base 43, and downwards (not shown) from the base 43 (male part 42 in FIG. 1c upside-down) protruding flexible elements 44 which can be moved towards each other by applying a force from the side, and which have an inner strength which is resulting in that they will be forced away from each other to return to their initial state. In this way the female part 41 and male part 42 can separately be arranged and fixed in the recesses 32 in the insulating material 30 and the load-bearing walls 21, at opposite sides of building blocks 11 to be arranged to each other. E.g. are all building blocks 11 provided with male parts 42 in recesses 32 at the underside and female parts 41 in recesses 32 at the upper side, as shown in FIG. 3. In this way a building block 11 can be arranged on an underlying building block 11, whereupon a further building block 11 with similar click-system can be arranged thereupon again. In this way it is provided a reinforcing element 40 split in two parts providing a click-system shaped such that it is possible to release the building blocks 11 from each other by pulling them from each other in one direction, while they make it impossible to release the building blocks 11 from each other in another direction. In this way the male part 42 will be securely fixed to a female part 41 of another building block 11 when these are assembled by that the flexible elements 44 are pressed together. Due to the desire of the flexible elements 44 of returning to their initial state, they will lock to the female part 41 in vertical direction. Such a locking mechanism will prevent the building blocks 11 from being separated in vertical direction, but at the same time allows movement in horizontal direction so that a building block 11 can be pulled of an underlying building block 11. In addition to this one can arrange the same solution at the end sides 14, 15 of the building block 11, so that one then will achieve locking in relation to movement in both vertical direction and horizontal direction, and it will then not be possible to disassemble assembled building blocks 11. Such a solution is shown in FIG. 3 which shows how one of the end sides 14 of the building block 11 is provided with recesses 32 in the insulating material 30 for accommodation of the mentioned female part 41 or male part 42 for therethrough to enable fixation in vertical direction to other building blocks 11 which exhibit a male part 42 or female part 41.

(23) The alternative to the above mentioned use of reinforcing elements 40 in two parts is the use of reinforcing elements 40 exhibiting a mainly rectangular shape, as shown in FIG. 6, and which are glued to the recesses 32 in the insulating material 30 and the load-bearing walls 21, and possibly in recesses 32 at the end sides 14, 15 of the building block 11. The reinforcing element 40 will here e.g. be glued to the upper side of the building block 11, while the underside exhibits recesses 32 for accommodating the reinforcing elements 40, or that the building blocks 11 exhibit recesses 32 at the upper side and that the recesses 32 at the underside are provided with reinforcing elements 40.

(24) Reference is now made to FIG. 1b which shows details of the building block 11. In connection with the recesses 32 for the reinforcing elements 40 in the insulating material 30 and the load-bearing walls 21 it is preferably arranged a longitudinal drainage channel 60 in the recesses 32 for the reinforcing elements 40, as the reinforcing elements 40 form top and bottom barriers for condense and condense water, so that moisture does not leak out in the construction. In the shown example there is arranged two longitudinal drainage channels 60a-b at each side of the recesses 32. In addition it can be arranged drainage hole or drainage channel 60c connecting the drainage channels 60a-b of the recesses 32. For guiding moisture out of the construction it is arranged drainage holes 61a-d to the drainage channel 60, 60a-c. The drainage channels 60, 60a-c are preferably arranged to drainage holes 61a-d to each side of the building block 11, so that the building block 11 can be turned in all directions, such that one branch of the drainage holes 61a-b is for in air and the other side 61c-d is runoff/drainage for the part facing outwards. The alternative to the reinforcing elements 40 closing the drainage channels 60, 60a-b is that the drainage channels 60, 60a-b are formed by pipes.

(25) FIG. 1b further shows details of fastening of side plates or cover plates 70 to the building blocks 11. According to the present invention the reinforcing elements 40 are further provided with fastening means (not shown) for forming fastening points for side plates 70 (cover plates), e.g. in the form of a click-system, and the reinforcing elements 40 will then form the load-bearing element for fastening of side plates 70. In such a case the side plates 70 are provided with an insertion screw 71 with a snap-in function at the end entering the reinforcing element 40 through a guiding tube 72 arranged in the insulating material 30. The reinforcing element 40 is provided with a receiving element for snap-in from the side plates 70 and goes in locked position when the side plates 67 are pushed entirely or partly in. The side plates 70 have fasteners insertion screws 71 arranged in a pattern which results in that the side plates 70 can overlap building blocks 11 having similar or different size, as shown in FIGS. 4a-d.

(26) The side plates 70 can alternatively be fixed to the building blocks by means of gluing to the load-bearing walls 21 and insulating material 30, or by bolting to the load-bearing walls 21.

(27) Reference is now made to FIGS. 4b-d which show examples of a further embodiment of the present invention in the form of a building blocks 11 which extend in two planes which join to form a corner with a desired angle. Even more alternatively one can imagine building blocks 11 extending in more than two planes to form further variants.

(28) Reference is now made to FIGS. 4a-d which show details of a further embodiment of the present invention. According to this embodiment is either upper side of the building block 11, lower side of the building block 11 or both upper and lower side of the building block 11 provided with a longitudinal recess 33 adapted for accommodating a top sill 82 or support beam 84 or groundsill 80 (depicted in greater detail in FIGS. 6a-8b). In such an embodiment, the recesses 32 for reinforcing elements 40 will be arranged at inside of the recesses 33. By assembly of such embodiments the reinforcing elements 40 can be integrated with the recesses 32 and drainage channel 60, 60a-c and drainage holes 61a-d in the sill itself, and that the side pieces of the sill contains balancing pieces of insulation as a general sill. In other words, the top sill 82 or support beam 84 will be provided with a female part 41 or male part 42, as described above, so that the sill/beam can use the click-system, as described above, at fastening to a building block 11.

(29) The above described embodiments provide a building block 11 which has as low weight as possible and where side plates or cover plates 70 can be arranged later and even be replaced, at the same time as it constitutes a load-bearing structure for the building itself, as opposed to prior art where the building blocks/wall elements are load-bearing for themselves and where the side plates/cover plates are forming the load-bearing construction. The building block according to the present invention further exhibits both high vertical and horizontal strength, and is torsional stable. Accordingly, the building block 11, 11 according to the present invention exhibit a stable and solid building block 11, 11 which in addition has so low weight that it can be handled by one person.

(30) When a wall construction 100 is to be erected with building blocks 11, 11 according to the present invention it will be preferable to arrange a groundsill 80 at the concrete wall or concrete surface, to which the groundsill 80 is fixed. With the shown building block 11, 11, in the form of a bottom block, is ensured correct assembly of the bottom blocks and accordingly further building blocks 11, 11 arranged to the bottom blocks. Also here it will preferable that the reinforcing elements 40 are integrated together with recesses 32 and drainage channel 60, 60a-c and drainage holes 61a-d in the groundsill 80 itself, and that the side pieces of the groundsill 80 includes balancing pieces of insulation as a general beam. In other words, the groundsill 80 can be provided with a female part 41 or male part 42, as described above, so that the groundsill 80 can use the click-system described above at fastening to a building block 11. The bottom block 11 can then be fixed to the groundsill 80 by means of the above described click-system, and it will be preferable to apply a gently expanding glue before assembling the bottom block to the groundsill 80.

(31) In connection with windows and doors in a building there are preferably arranged building blocks 11 exhibiting a centrally extending recess 33 at the upper side of the building block 11 at each side of the window or door (depicted in greater detail in FIGS. 7a-8b), such that a support beam 84 can be arranged to the building blocks and extending over and under, respectively, the door/window and therethrough the construction becomes solid and the pressure load is balanced over and under the doors/windows. The recess 33 is preferably half as deep as the height of the support beams 84. In this way, one again over these building block 11, can arranged building blocks 11 of the type bottom blocks, as described above under FIG. 4a, which have a recess at the underside which is half of the height of the support beams 84 and therethrough the building blocks 11 will be integrated with the support beams 84. The support beams 84 are fastened by means of the above described click-system, and in addition preferably gently expanding glue.

(32) Alternatively the building blocks 11, 11 can be fixed with through screws and gently expanding glue to each other or sills/beams, if the reinforcing elements 40/sills/beams are not provided with a click-system.

(33) Reference is now made to FIGS. 5a-b which show building blocks 11 according to a further embodiment of the present invention in the form of adaption blocks. The adaption blocks are formed in the same way as the above described embodiments of the building blocks 11, but in addition they are divided in two, so that they in a simple manner can be arranged at terminations against existing roof or framework, where there is arranged a top sill 82. By that the adaption blocks are divided in two this enables that they can be arranged from each side against a top sill 82 and in this way complete a wall construction 100. The adaption blocks will then be fixed by that screws are inserted into the top sill 82 through the longitudinal sides 12, 13. As one can see from FIG. 5a the adaption blocks can be provided with a longitudinal recess/notch 33 adapted for arrangement against the top sill 82. In FIG. 5b it is shown a different solution where the adaption block instead of recess/notch has a shorter width. It should be noted that if it is desirable with additional reinforcing and strength for a wall formed by building blocks according to the present invention one can at desired positions arrange support beams 84 by using the above mentioned bottom and top blocks.

(34) In other words, by the present invention it is provided building blocks 11 which has low weight, but which at the same time exhibit strength and insulation which can be adapted for use both for internal and outer walls, for non-loadbearing walls and load-bearing walls. The building blocks 11 will when they are arranged together, by that they include inner load-bearing walls, provide a construction which satisfies all demands for load-bearing constructions for arrangement of roofs, partitions between floors, and further floors above that again. The building block further exhibits both vertical and horizontal strength, and they are torsional stable. By that one have building blocks with different shapes which enables easy assembling against groundsill 80, top sill 82 and support beams 84, it is provided a building system of building blocks which can easily be adapted at the actual building site. By that the building blocks also can be formed with an extension in several planes this makes it easy to form correct corners. Another advantage with the present invention is that one can use building blocks adapted for later arrangement of side plates/cover plates with different height or length, for therethrough to achieve different design or shape or form of a wall or building. The building block can easily be divided/cut according to desired length, something which makes it easy to adapt for possible windows or doors, and completion against other walls.

(35) The insulating material 30 of the building block 11 can consist of different layers with different properties, e.g. can one part of the insulating material be fire resisting or sound resisting or other relevant properties.

(36) Further, the insulating material 30 on one side of the building block can extend some further and the at the other side some shorter, seen in the longitudinal direction of the building block 11, for therethrough to exhibit a tongue and groove function.

(37) The reinforcing elements 40, i.e. the female part and/or male part can be provided with a tongue and groove function.

(38) In FIG. 6 it is shown an alternative embodiment for fastening building blocks together in the form of the use of a specially adapted locking element which corresponds to a shortened embodiment of the above described male part 42 for the click-system of the reinforcing element 40. By arranging recesses 201 at upper and lower side, respectively, of the building block 11, so that when two building blocks 11 are assembled, the locking element will secure the building blocks 11 together, either in horizontal direction or in vertical direction or in both directions. The locking will then be as described above. This solution is especially relevant at the use of reinforcing elements 40 without click-system.