WO2021185711A1

WO2021185711A1 - Building wall

Info

Publication number: WO2021185711A1
Application number: PCT/EP2021/056436
Authority: WO
Inventors: Andreas Mohr
Original assignee: PMFHousing GmbH
Priority date: 2020-03-14
Filing date: 2021-03-13
Publication date: 2021-09-23
Also published as: DE102020107069A1; EP4118277A1; CN115298402A; CA3170946A1; JP2023518204A; US20230096923A1

Abstract

Building wall (1), in particular bottom wall, top wall or side wall, comprising a main frame (2) including a plurality of struts (21, 22), the main frame (2) forming a space (23) between the struts, said space (23) being filled with a foamed filling material (4).

Description

Building wall

The invention relates to a building wall.

WO 2017/081212 A1 discloses a method for producing a building with a plurality of walls. First, a flexible shell shape is spread out at a predefined location. The flexible shell mold is then filled with a foaming material which subsequently hardens, creating stable walls.

DE 19950 139 A1 discloses a way of closing the gaps between the beams of a roof structure. The mechanical stability is sufficiently guaranteed by the beams. Sheets are attached to the beam by clipping and then filled with foam. A grid spacing between spacers is comparatively large at more than approx. 10 cm, which leads to a comparatively large deformation of the surface, which, however, is acceptable in the roof construction. The space delimited by the strips and to be filled extends, for example, continuously from a foot purlin to a ridge purlin (column 1, line 11ff), which is usually a length of well over 2 meters. A similar construction is known from DE 3502323 A1.

The task is to provide an improved building wall.

The object on which the invention is based is achieved by a building wall, a building and a method according to the main claims; Refinements are the subject of the subclaims and the description.

The invention comprises a building wall, which can be a floor wall, a roof wall or a side wall of a building. The wall has a base frame comprising a plurality of struts. The struts are in particular made of wood. The base frame forms a space between the struts. The gap is filled with a foamed filling material.

In one embodiment, the intermediate space, in particular next to the struts, is delimited by an envelope shape, which is in particular a textile envelope. In particular the envelope shape delimits the space in a direction transverse to the wall plane, while the struts delimit the space in a direction parallel to the wall plane.

In particular, a plurality of interstices are formed among one another, each of which is separated from one another by a horizontal strut.

A separate shell shape can be provided for each intermediate space, so that several shell shapes arranged one above the other are provided for one wall.

Alternatively, a common first cover (outer cover or inner cover) can be provided for several intermediate spaces at least on one side. In the case of a one-sided common first shell, the shell shape is then placed around the struts starting from the side with the common first shell and attached to it from both sides. For this purpose, struts can be guided through passages between two adjacent second casings (outer casing or inner casing). In an alternative embodiment, both the outer shell and the inner shell are designed to jointly delimit a plurality of intermediate spaces. In this case, individual struts are to be inserted through the entry lanes of the pre-assembled shell molds. Then the shell molds can have continuous shells on both sides. The subdivision of a wall into a large number of intervening spaces favors the formation of homogeneously filled spaces.

The height of a single space is thus limited by a horizontal strut. With each horizontal strut, a new space begins again. A low total filling height is favorable for a homogeneously filled intermediate space. In particular, the height of a space between a side wall is a maximum of 1.5 m, in particular a maximum of 70 cm.

In one embodiment, the shell form comprises an outer shell that delimits the space on an outside wall, and an inner shell that delimits the space on an inside wall. In one embodiment, the outer shell and the inner shell are connected to one another by at least one connecting thread, in particular by a plurality of connecting threads. In particular, the connecting thread bridges the gap. In one embodiment, the shell shape is connected to one another in a prefabricated manner with the outer shell, the inner shell and the connecting thread.

In one embodiment, the shell form is attached to a strut of the base frame. The outer shell is attached to an outside of a strut of the base frame and / or the inner cover is attached to an inside of a strut of the base frame. The fastening is then in particular such that the struts at least in sections delimit the receiving space to be filled for the filling material in the direction of the wall plane.

In one embodiment, two adjacent intermediate spaces within a wall are each delimited by two separate outer shells and / or each by two separate inner shells. The adjacent intermediate spaces within a wall can each be delimited by two separate envelope shapes. In particular when prefabricated casing forms with connecting threads are used, delimitation of several intermediate spaces by a common casing is not easily possible, since the casing has to be passed through the intermediate space in each case. Options for resolving this conflict are described in the context of this application

In one embodiment, a common strut is arranged between the two adjacent spaces. The two separate outer shells and / or inner shells are attached to the common strut.

In one embodiment, a wall, in particular the base frame of the wall, comprises a plurality of spaces between one another. The spaces are separated from each other by a common strut. The multiple subdivision of a wall creates several small spaces that have to be filled up separately. Tests have shown that a foam quality of plastic foam that meets the high requirements placed on wall or roof elements in terms of strength, tightness and thermal conductivity can be achieved in particular if the size, in particular the height, of the spaces to be filled is comparatively low. In addition, additional struts produce improved stability and dimensional stability of the base frame and thus of the finished wall.

In one embodiment, the wall is a bottom wall which is arranged on a, in particular uneven, subsurface. The intermediate space is at least indirectly limited on the bottom side by the subsurface. A film can delimit the intermediate space on the underside and in particular rest on the floor. The advantage is that no major preparatory work is required on the subsurface. The film can be applied to the untreated substrate; any unevenness is automatically leveled out by the filler material. The film prevents a material interaction between the substrate and the filling material.

In one embodiment - in particular for the bottom wall - the intermediate space is filled in layers with several quantities of filler material. The quality of the foamed material can be improved by introducing it in layers. In this way, the material has, in particular, a homogeneous density distribution and any detachment of the filler material from the wall that would otherwise occur during curing is prevented.

In one embodiment, the gap is delimited on the top by a panel, in particular wherein the panel comprises a plurality of holes for introducing filler material. The planking forms a defined top end of the gap so that the floor is largely flat on the top. In particular, the planking is already connected to the intermediate space when the filling material is being filled, so that it is to be regarded as a component of the casting mold. The holes in the planking are used to let in the filler material, especially in a small amount that is required to completely fill the gap.

The invention also relates to a building with a plurality of walls of the aforementioned type.

The invention also relates to a method for producing a wall of the aforementioned type, comprising the following method steps:

Providing the base frame; Attaching the shell form to the base frame,

Filling the intermediate space with at least an amount of filler material, the filler material foaming after filling.

In one embodiment, a prefabricated shell shape is used, the inner shell of the shell shape being connected to the outer shell of the shell shape by the connecting threads before the shell shape is attached to the base frame. This enables simple assembly of the shell form on site, since only the prefabricated elements have to be inserted and fastened.

In one embodiment, the shell shape is at least partially passed through the space. Furthermore, the outer shell of the shell form is attached to a strut on the outside of the wall and an inner shell of the shell form is attached to the strut on the inside of the wall. This method enables the inner and outer sheath, which is firmly attached with the connecting threads, to be attached to the prefabricated base frame.

The inner shell and / or the outer shell can be fastened to the strut by means of a sealing layer - for example adhesive tapes, elastic or pasty sealing materials - and clips attached to the strut. This is a simple and stable method and does not require any special tools.

In one embodiment, for fastening, the outer shell and / or the inner shell is acted upon by a fastening fitting against the strut. In particular, the outer shell or inner shell is consequently clamped between the fastening stop and the strut, which enables reliable fastening and sealing. In particular, the fitting is arranged circumferentially around the space, it also being possible for the fitting to be an arrangement with several individual fitting parts (the fitting does not have to be a one-piece and completely closed individual fitting part.

In particular, the following framework conditions must be taken into account:

When foaming filler material, especially with foam plastics such as polyurethane, polystyrene, PIR (polyisocyanurate), etc., only a limited amount of foam material can be introduced into the space in the time available "for a shot". Hence the individual spaces in between comparatively small in size. If a large amount of filling material is introduced at the same time, the heat of reaction in the space can cause overheating, which can damage the frame, the filling material or other elements.

In addition to thermal properties of the wall, the wall should preferably also support the mechanical load-bearing capacity. The base frame can therefore be manufactured significantly more cost-effectively. For mechanical strength, it is advantageous if the foam directly forms a material connection with the base frame. This is made possible by high pressure during the lowering position.

A defined pressure of the filling material is preferably achieved in the intermediate space. For this purpose, a precisely calculated amount of filler material, which hardens to form a foam of a defined density, is poured into a defined space volume.

High pressure is also beneficial for

- Avoiding larger flea spaces in the filling material (prevents thermal bridges and reduced mechanical strength);

- Avoidance of gaps / separation between the base frame and the filling material (prevents thermal bridges and reduced mechanical strength and leakage for drafts and water vapor);

- The increase in the strength of the foam due to the compression taking place during the foaming.

The build-up of the required pressure and the limitation of the filler material, in particular introduced all at once, requires an intermediate space of a defined size that is closed on all sides. In addition, the foam must be prevented from flowing over into the adjoining chamber during foaming, since otherwise the pressure is not correctly set and filler material may flow off into adjoining spaces and foam up there in an uncontrolled manner.

Gaps with a large dimension in length or width (side length> 1.5m) tend to the fact that the hardening filler material can cause a change in shape of the base frame due to shrinkage (e.g. this inwards warped), especially if foaming is done with the wrong pressure. Therefore, sealing and stiffening struts, in particular horizontal struts, are inserted at regular intervals (for example approx. 0.5 to 1 m) in order to keep the side length of the gap small and to limit the bending. The foam material is particularly low-viscosity in order to optimally fill the gap. Since the low viscosity also persists during the foaming or shortly afterwards, the gap must be completely sealed.

For this purpose, the inner shell and the outer shell are preferably glued to the base frame, in particular using double-sided adhesive tape or elastic or pasty sealing materials.

The intermediate spaces are preferably filled through an opening in the base frame or through a raised edge of the shell mold. The openings are then closed, for example by stoppers, or the raised areas are sealed, in particular with clips, in particular with strips of wood or metal, during the foaming phase

Ventilation openings (e.g. bores in the upper corners) are preferably provided to allow the air in the element to escape. Otherwise, the gaps in the upper area cannot be completely filled.

The advantages and configurations cited in each case for the method and the device can also be applied to the device or the method.

The invention is explained in more detail below with reference to the figures; here shows:

Figure 1 shows a base frame of a side wall according to the invention;

FIG. 2 shows an envelope form of a wall according to the invention in one embodiment in different representations;

FIG. 3 shows the method steps for positioning a side wall or roof wall;

FIG. 4 shows a base frame of a bottom wall according to the invention; FIG. 5 shows the method steps for producing a bottom wall;

FIG. 6 shows an envelope shape of a wall according to the invention in a further embodiment;

FIG. 7 shows an envelope shape of a wall according to the invention in a further embodiment.

Figure 1 shows a top view of a base frame 2 of a wall according to the invention. The base frame comprises a plurality of struts 21, 22, which are aligned in different directions, in particular transversely to one another, and form a wall plane. In the event that the wall is a side wall, first struts 21 are aligned vertically and second struts 22 are aligned horizontally. In the case of wall elements, individual struts 22 can also be aligned at an angle to the horizontal, for example in order to accommodate a sloping roof in the case of gable walls. Then the shell molds must be designed accordingly.

Between the struts 21, 22 intermediate spaces 23 are formed into which a foaming filler material is filled in the course of the manufacture of the wall.

Figure 2a shows a shell mold 3 in detail. Such an envelope 3 delimits an intermediate space 23 in a direction transverse to the wall plane. The shell mold 3 comprises an outer shell 31 which covers the intermediate space 23 on an outer wall side 11 and an inner shell 32 which covers the intermediate space 23 on an inner wall side 12 (FIGS. 2b and 2c). The outer shell 31 is connected to the inner shell 32 via a plurality of connecting threads 33. When the space 23 is filled with filling material, the filling material generates an internal pressure on the outer shell 31 and the inner shell 32. The connecting threads hold the outer shell 31 and the inner shell 32 at a predefined distance from one another so that bulges are avoided. In addition, the pressing filling material and the pulling connecting threads - analogous to reinforced concrete - can generate increased flexural rigidity in the wall.

The wall should be constructed in such a way that the filler material provides an essential component of the stability. The base frame can be dimensioned so small that the required load-bearing capacity of the wall through the Frame is not provided. The frame can therefore be designed much more cheaply than, for example, a wall that is produced in classic carpentry using a wooden frame.

In order to provide the load-bearing capacity of the wall largely through the filler material, the filler material must be introduced into the space in such a way that a high pressure of at least 1.2 bar (excess pressure) is created in the space during the foaming process. In particular, even in the cured state, the filler material permanently generates, in particular, considerable pressure on the outer shell and on the inner shell of in particular at least 1.2 bar overpressure. To facilitate this, a number of other features are beneficial:

When filling, the amount of filler material is very important, as this is crucial for generating the advantageous minimum pressure during curing. It is therefore advantageous for stability if as precise an amount as possible of filler material is poured into the intermediate space. The target parameter used is the density of filling material in the gap, which can vary for different applications and materials. For example, a density of 50 kg / m3 (cubic meter) is required to form a solid wall. From this, taking into account the volume of the space, the exact amount of filler material that is to be filled into the space can be calculated. Now the filling takes place with exactly the calculated amount of filling material. The optimum pressure of the filler material of in particular at least 1.2 bar during curing is then automatically set.

The large number of connecting threads per unit area can be seen in FIG.

A preferred number of connecting threads per unit area is in particular at least 100, preferably at least 200 or 1000 or 2000 connecting threads per square meter. The connecting threads are in each case in particular evenly distributed over the length x and the width y.

A distance between two adjacent connecting threads in the length direction y and in the width direction y is in particular a maximum of 5 cm, in particular max. 2 cm. In particular, at least individual connecting threads are spaced apart by a maximum of 10 mm.

The gaps are made comparatively small. This is the only way to achieve consistently high pressures in the filler material, dimensional stability and sufficiently low reaction temperatures. The side length of the intermediate space, that is to say the length (in the x direction) of an intermediate space 23, and the width (in the y direction) of an intermediate space 23 is a maximum of 1.5 m, preferably a maximum of 1.2 m.

Such shell molds 3 can be prefabricated. For assembly, the shell mold 3 is partially to be passed through the space 23 from one side. Therefore, each shell shape is only used to delimit a single space 23.

With the aid of FIG. 3, steps in the production of the wall are explained in greater detail in a cross-sectional representation. On the outside 11 of the wall and on the inside 12 of the wall, the struts 21, 22 are each provided with a double-sided adhesive tape 57 (FIG. 3a). Using the adhesive tape 57, the outer shell 31 is attached to the outside of the strut 21, 22 and the inner shell 32 is attached to the inside of the strut 21, 22 (FIGS. 3b and 3c). As an alternative to the adhesive tapes, other, in particular elastic or pasty, adhesive and / or sealing media can also be used.

A further shell shape 3b is now attached to the struts on which a shell shape is already attached. The further envelope form can - if sufficient width of the already glued-on adhesive tape can still be used - also be attached with this adhesive tape. Otherwise, a further, second double-sided adhesive tape 57b is applied to the first shell mold 3 in the region of the struts, with the aid of which the further shell mold 3b is attached to the struts. For permanent fixation, a circumferential fastening bracket 58 is applied to the shell molds in the area of the struts, which in particular is attached to the struts separately, ie in addition to the adhesive tape. This can be done by a screw connection 59 on the struts (Figure 3d). Even if the adhesive strength decreases due to aging, permanent fixation of the shell form on the struts is guaranteed. Staples or nails can also be used as fastening fittings for the envelope form. However, this overlapping arrangement of the shell shapes in the area of the struts is not necessary. The envelope forms can also be attached next to one another on a common strut, provided that there is sufficient space. Then two adjacent shell forms can also be attached to the common strut with a common adhesive tape or with two separate adhesive tapes.

The intermediate space 3 is then filled with the foaming filler material 4 (FIG. 3e).

FIG. 6 shows a modification of the shell mold 3 according to FIG. 2a. The shell shape is set up to delimit a plurality of intermediate spaces. Thus, the outer shell 31 is formed continuously for several intermediate spaces. A plurality of separate inner shells 32 are formed in order to limit only one intermediate space in each case. There are thus passages 34 between the individual inner casings, through which the struts 22, in particular the transverse struts, can be passed between two inner casings in order to reach their destination between the connecting threads 33. The shell mold 3 and the base frame 2 can largely be preassembled.

The inner shell and the outer shell are then attached to the struts as described above.

FIG. 7 shows a further modification of the shell mold 3 according to FIG. 2a. The shell shape is set up to delimit a plurality of intermediate spaces. Thus, the outer shell 31 and the inner shell are continuously formed for a plurality of intermediate spaces. There are lead-in lanes 35 for struts, in particular the transverse struts 22, between connecting threads. After passing through, the struts 22 passed through can be connected to a further strut 21, in particular the vertical strut 21. In this embodiment, too, the shell mold 3 and the base frame 2 can be largely preassembled. In the case of the base frame, the vertical strut 21 must be re-assembled on the horizontal strut 22.

The inner shell and the outer shell are then attached to the struts as described above. Figure 4a shows the base frame 2 in an embodiment for a bottom wall.

The base frame 2 has first and second struts 21, 22 which are oriented in different directions and form intermediate spaces 23 between them. The intermediate spaces 23 can be further sub-structured by means of intermediate struts 24, as FIG. 4b shows.

FIG. 4b shows in sections a paneling 55 which covers the spaces 23 during the lowering process of the bottom wall. The planking 55 can also be used in the embodiment according to FIG. 4a (without intermediate struts 24).

FIG. 5 shows the further steps for lowering a bottom wall 1 B on an uneven surface 91.

A film 52 is laid out on the substrate 91. Several ground anchors 51 are introduced into the ground (FIG. 5a). The ground anchors 51 are set up to introduce a tensile force acting on them into the ground 91. When the tie rods 51 penetrate the film 52, the film 52 is to be sealed against the tie rods 51.

Such a tie rod 51 can comprise a threaded rod which is fastened in the ground.

A foundation fitting 53 is fastened to each of the tie rods 51 by means of a foundation fastening 54 (FIG. 5b). The foundation fitting can be an angle fitting. The foundation mount 54 may, for example, comprise a nut that is attached to the threaded rod. Individual struts 21, 22 of the base frame 2 from FIG. 4 are fastened to the foundation fastening 54.

Interstices 23 are now formed between the struts 21, 22, which are then filled with foaming filler material. Projecting film can be cut off (FIG. 5c).

Filling is now started (FIG. 5d). First, a first amount of foaming filler material 41 is introduced into the space 23. The first amount is introduced in the edge areas of the gap 23, in particular in corner areas on the struts 21, 22. Also areas of the foundation attachment and the fittings are enclosed by filling material. Due to the small amount of filling material used for the first filling, the individual spaces are sealed against one another and the undersides of the frame are sealed against the film. The small amount of filling material prevents the base frame from being lifted by the foam pressure. The first amount of filler material 41 then hardens for a few minutes.

A second amount of filler material is then introduced into the space 23 (FIG. 5e). In this case, the entire surface of the substrate 91 is thinly covered with filler material in the region of the intermediate space. The filling material also flows into the gaps between or under the struts that arise during the unpressurized curing of the previous filling. This closes these and ensures a good bond with the frame material. The space 23 is not completely filled. The second amount of filler material 42 then cures for a few minutes.

The aforementioned process can now be repeated as often as desired (FIG. 5f) until the filling material has reached approximately a predetermined mean distance D from the upper edge 0 of the struts, here for example 4 cm. For example, a third amount of filler material 43 is applied to the second amount of filler material 42 and then cures for a few minutes. If parts of the cured filler material protrude above the struts, these parts can simply be cut off and placed in the space 23; these are then enclosed in the next amount of filler material.

The intermediate space 23 is now covered with a planking 55 at the top. The planking 55 has holes 56 at regular intervals of approximately 40-80 cm, each approximately 10 mm in diameter.

Small final amounts of filler material 44 are now introduced through these holes 56 (FIG. 5h). This amount now foams up and fills the gap 23 at least on a substantial part of the surface completely up to the planking 55 at the top (FIG. 5i). It is important that the final quantity 44 supplied in each case is not too large, since otherwise the pressure from below against the planking 55 can become too great and bulges can occur. List of reference symbols

1 wall

11 outside wall

12 inside wall

2 base frame

21 first strut / vertical strut

22 second strut / horizontal strut

23 space

24 intermediate strut

3 shell shape

31 outer shell

32 inner cover

33 connecting thread

34 passages

35 Entrance Alley

4 filler material

41 first filling amount of filling material

42 second fill quantities of filler material

43 third quantities of filling material

44 final amount of filling material

51 ground anchors

52 slide

53 Foundation fittings

54 Fastening to the foundation

55 planking

56 holes

57 double-sided tape

58 mounting bracket

59 wood screw

D distance

0 upper edge of the struts

91 underground

100 buildings

Claims

Expectations

1. Building wall (1), in particular bottom wall, roof wall or side wall, with a base frame (2) comprising a plurality of struts (21, 22), the base frame (2) forming an interspace (23) between the struts, the interspace (23) is filled by a foamed filling material (4).

2. Building wall (1) according to the preceding claim, characterized in that the base frame (2) is dimensioned such that a required load-bearing capacity of the building wall is not provided by the base frame.

3. Building wall (1) according to one of the preceding claims, characterized in that the filled intermediate space (23), in particular next to the struts (21, 22), is delimited by an, in particular textile, envelope form (3).

4. Building wall (1) according to the preceding claim, characterized in that the shell mold (3) comprises an outer shell (31) which delimits the space (23) on an outer wall side (11), and that the shell mold (3) has an inner shell (32) which delimits the intermediate space (23) on an inner wall side (12).

5. Building wall (1) according to the preceding claim, characterized in that the outer shell (31) and the inner shell (32) are connected to one another by at least one connecting thread (33), in particular a plurality of connecting threads (33), in particular wherein the Connecting thread (33) bridges the gap (23).

6. Building wall (1) according to the preceding claim, characterized in that the connecting threads (33) are each evenly distributed over a length direction (x) and a width direction (y).

7. Building wall (1) according to the preceding claim, characterized in that adjacent connecting threads (34) in the length direction (x) and in the width direction have a distance from one another of max. 5 cm, preferably max. 2 cm or 1 cm and / or that in the spaces (23) there is an average number of at least 100, preferably 200 or 400 connecting threads (33) per square meter, preferably at least 1000 or 5000 connecting threads (33) per square meter.

8. Building wall (1) according to one of the preceding claims, characterized in that the filler material is set under an internal pressure of at least 1.2 bar (excess pressure) after curing and / or during foaming and curing, and / or that the filler material exerts a pressure load of at least 1.2 bar (overpressure) on the inner shell and / or on the outer shell.

9. Building wall (1) according to one of the preceding claims, characterized in that the base frame (2), in particular a strut of the base frame, comprises a filling opening for filling the filling material into the space.

10. Building wall (1) according to one of the preceding claims, characterized in that the shell form (3) is attached to a strut (21, 22) of the base frame (2), in particular that the outer shell (31) is attached to an outside of a strut (21, 22) of the base frame (2) is attached and / or that the inner shell (32) is attached to an inside of a strut (21, 22) of the base frame (2).

11. Building wall (1) according to one of the preceding claims, characterized in that two adjacent spaces (23a, 23b) within a wall are each delimited by two separate outer shells (31) and / or each by two separate inner shells (32), in particular that two adjacent intermediate spaces (23a, 23b) within a wall are each delimited by two separate envelope forms (3a, 3b).

12. Building wall (1) according to one of the preceding claims, characterized in that a common strut (22g) is arranged between the two adjacent spaces, the two separate outer shells (31) and / or inner shells (32) being attached to the common strut are.

13. Building wall (1) according to one of the preceding claims, characterized in that the shell form (3) has a first shell (31) which is designed to delimit a plurality of spaces, and that the shell form (3) at least two separate second covers (22) which are designed to delimit an intermediate space, the two separate second covers (32) being connected to the first cover (31) via connecting threads (33), with a Passage (34) is provided for passing through a strut (22).

14. Building wall (1) according to one of the preceding claims, characterized in that the shell form (3) has a first shell (31) which is designed to delimit a plurality of gaps, and that the shell form (3) has a second shell (32) which is designed to delimit a plurality of interspaces, the second sheath (32) being connected to the first sheath (31) via the connecting threads, wherein between the first sheath (31), the second sheath (32) and an insertion lane (35) for passing through a strut (22) is provided for the connecting feet (33).

15. Building wall (1) according to one of the preceding claims, characterized in that the building wall (1) has a plurality of intermediate spaces (23) with one another, each of which is separated from one another by a strut (22).

16. Building wall (1) according to one of the preceding claims, characterized in that the wall is a side wall (S) or a roof wall (1 D) and that the base frame (2) has at least three horizontal struts (22) arranged one above the other, so that several intervening spaces (23) are formed.

17. Building wall (1) according to one of the preceding claims, characterized in that the wall is a bottom wall (1B) which is arranged on a substrate (91), the intermediate space (23) on the bottom side at least indirectly through the substrate (91) is limited.

18. Building wall (1 B) according to one of the preceding claims, characterized in that the intermediate space (23) is filled in layers by several quantities (41, 42, 43, 44) of filler material.

19. Building wall (1 B) according to one of the two preceding claims, characterized in that the space (23) is delimited on the top by a planking (56), in particular wherein the planking (56) comprises a plurality of holes for introducing filler material.

20. Building comprising a plurality of walls (1) according to one of the preceding claims.

21. A method for producing a wall according to one of the preceding claims, comprising the following method steps:

Provision of the base frame (2), Attaching the shell form (3) to the base frame (2),

Filling the intermediate space (23) with at least an amount of filler material, the filler material foaming after filling.

22. The method according to the preceding claim, wherein the shell mold (3) is prefabricated, and / or wherein the inner shell (32) of the shell mold (3) is connected to the outer shell (31) of the shell mold (3) by the connecting threads (33) is before the shell mold is attached to the base frame.

23. The method according to any one of claims 21 to 22, wherein the shell mold (3) is carried out at least partially through the space (23), and wherein an outer shell (31) of the shell mold (3) is attached to a strut (21, 22) on the outside of the wall and that an inner shell (32) of the shell mold (3) is attached to the strut (21, 22) on the inside of the wall.

24. The method according to any one of claims 21 to 23, characterized in that the filling material has a viscosity of a maximum of 1000 mPa * s during filling, in particular, and that the inner shell and the outer shell are in sealing contact with the base frame during filling.

25. A method for producing a wall according to one of claims 21 to 24, wherein for fastening the outer shell (31) and / or the inner shell (32) is acted upon with a fastening fitting (58) against the strut (21, 22).

26. The method for producing a wall according to one of claims 21 to 25, wherein a target density of the filler material is determined before the space is filled with filler material; an amount of filler material is determined based on the target density and based on the volume of the gap; then the gap is filled with the determined amount of filler material.