EP3456896A1 - Mould for making concrete support columns, in particular for the production of parts of concrete support columns forming a wall - Google Patents

Abstract

It is described a formwork device for the production of concrete columns, in particular for the production of parts of a wall forming vertical concrete columns. The shuttering device described is characterized in that it is formed by shuttering blocks, which are traversed by a vertical recess, which has a cross section corresponding to the concrete column cross-section, and which are further designed and dimensioned so that they can be used as masonry blocks for producing a Masonry blocks existing wall are used, and can be combined with the masonry with masonry blocks not formed by formwork blocks and how the masonry blocks not formed by formwork bricks can be integrated into the masonry block composite.

Description

The present invention relates to a formwork device according to the preamble of patent claim 1, that is a formwork device for the production of concrete columns, in particular for the production of parts of a wall forming vertical concrete columns.

The provision of concrete columns in walls gives the walls concerned greater stability. Such concrete columns are used, for example, in knee sticks (drumming) of buildings. A knee block is a masonry wall that extends beyond the ceiling of the attic, on which the roof construction rests, and on which particularly large forces act. The integration of vertical concrete columns in the wall forming the knee joint increases their stability and ensures that the knee block is suitable for absorbing the large forces acting on it. However, concrete columns can also be provided in any other walls of a building. For example, it can also increase the stability of walls in the lower floors of the building. This may, for example, but not exclusively act in the corners of the building provided projectile high corner columns.

When building a concrete column-containing wall, the concrete columns are first produced. For this purpose, first a usually made of wood formwork with built-in reinforcement is built and then poured the formwork with liquid concrete. After drying the concrete, the formwork is removed and using masonry blocks, for example using bricks the rest of the wall containing the concrete columns made. Since the concrete columns are usually formed less thick than the rest of the wall, for example, have a cross section of 22x25 cm, a thickness compensation is normally then made in a further operation, for example by appropriate compensation elements are placed on the concrete support.

Depending on the wall, this can contain a considerable number of concrete columns. For example, in a wall forming a knee-stick, a concrete support may be provided every 2 m. The above work must be carried out for each of the concrete columns of the relevant wall.

The construction of a concrete columns containing wall is therefore associated with a considerable effort and extremely time consuming.

The present invention is therefore an object of the invention to find a way through which the concrete columns of a concrete columns containing wall, and thus the entire wall can be particularly easily and quickly produced.

This object is achieved by the claimed in claim 1 formwork device.

By means of the shuttering device according to the invention, it is possible to integrate the shuttering device, more precisely the shuttering blocks forming the formwork device, such as normal masonry blocks, ie not formed by shuttering bricks, for the construction of a wall in the masonry building block. Thus, therefore, in a first step, a contiguous masonry block formwork block composite can be produced, wherein the wall sections containing the concrete columns are formed by the shuttering blocks according to the invention, and wherein the no concrete columns containing wall sections are formed by the normal masonry blocks. The concrete columns can then be produced in a second step by pouring the vertical recesses of formwork blocks. Thus, the production of the complete wall is already completed. The shuttering stones can remain in the wall after pouring. Preferably, the shuttering blocks have at least the same height and width as the normal masonry blocks, so that any compensation and adjustment work can be omitted.

Preferably, the shuttering blocks are made of good heat-insulating material such as foamed plastic such as foamed polystyrene, so that no special thermal insulation of the concrete columns is required.

Using the shuttering blocks according to the invention, walls containing concrete columns can thus be produced in fewer working steps and much faster and easier than has hitherto been the case. Such walls can ultimately be built like a concrete column-free wall. The only difference is that where concrete columns are to be provided, instead of the normal masonry blocks, the shuttering blocks according to the invention are integrated into the masonry building block and later filled with liquid concrete. Since the shuttering blocks according to the invention may have the same size as the normal masonry blocks, the integration of the shuttering blocks in the masonry building block network is not a problem. The processing is identical. It only needs to be paid attention to which stone is to be used at which point.

Advantageous developments of the invention are the dependent claims, the following description, and the figures removed.

Figur 1

eine Mauer in welche die im Folgenden näher beschriebene Schalungsvorrichtung integriert ist,

Figur 2A

eine Draufsicht auf unterschiedlich groß ausgebildete einteilige Schalungssteine,

Figur 2B

zweiteilige Ausführungen der in der Figur 2A gezeigten Schalungssteine,

Figur 2C

die Einzelteile, aus welchen die in der Figur 2B gezeigten Schalungssteine zusammengesetzt sind,

Figur 3A

eine Draufsicht auf eine Schalungsstein-Anordnung zur Herstellung einer in einer Gebäudeecke zu liegen kommenden Betonstütze,

Figur 3B

eine Seitenansicht der in der Figur 3A gezeigten Anordnung,

Figur 4A

eine Draufsicht auf eine Schalungsstein-Anordnung zur Herstellung einer in einer Laibung zu liegen kommenden Betonstütze,

Figur 4B

eine Seitenansicht der in der Figur 4A gezeigten Anordnung,

Figur 5A

eine Draufsicht auf eine Schalungsstein-Anordnung zur Herstellung einer in einem geraden Mauerstück zu liegen kommenden Betonstütze,

Figur 5B

eine Seitenansicht der in der Figur 5A gezeigten Anordnung,

Figur 6

einen Schalungsstein mit einem seitlichen Ausschnitt und das zur Bildung des Ausschnitts herausgeschnittene Schalungsstein-Teil,

Figur 7

den Schalungsstein gemäß Figur 6 mit einem in den Ausschnitt eingesetzten normalen Mauerwerksbaustein,

Figur 8

eine Mauer, die der in der Figur 1 gezeigten Mauer entspricht, aber unter Verwendung der Schalungssteine gemäß Figuren 6 und in die Ausschnitte eingesetzte normale Mauerwerksbausteine errichtet wurde, und

Figur 9

einen Schalungsstein, der noch keinen seitlichen Ausschnitt aufweist, aber zur Erzeugung eines solchen Ausschnitts vorbereitet ist.

The invention will be explained in more detail by means of embodiments with reference to the figures. Show it

FIG. 1

a wall into which the shuttering device described in more detail below is integrated,

FIG. 2A

a top view of differently sized formed one-piece shuttering blocks,

FIG. 2B

two-piece designs in the FIG. 2A shuttering stones shown,

Figure 2C

the items from which in the FIG. 2B composite shuttering blocks are assembled,

FIG. 3A

a plan view of a shuttering block arrangement for producing a concrete support to be placed in a building corner,

FIG. 3B

a side view of the in the FIG. 3A shown arrangement,

FIG. 4A

a plan view of a shuttering block arrangement for producing a concrete support lying in a soffit,

FIG. 4B

a side view of the in the FIG. 4A shown arrangement,

FIG. 5A

a plan view of a shuttering block assembly for producing a concrete wall in a straight piece of wall to come coming concrete support,

FIG. 5B

a side view of the in the FIG. 5A shown arrangement,

FIG. 6

a shuttering stone with a lateral cut-out and the shuttering block part cut out to form the cut-out,

FIG. 7

according to the shuttering stone FIG. 6 with a normal masonry block inserted in the cutout,

FIG. 8

a wall, the one in the FIG. 1 shown wall, but using the formwork blocks according to FIGS. 6 and in the cutouts used normal masonry blocks was built, and

FIG. 9

a shuttering block, which does not yet have a lateral cutout, but is prepared to produce such a cutout.

The formwork device described in more detail below is a shuttering device for the production of concrete columns, in particular for the production of parts of a wall forming vertical concrete columns.

The shuttering device is formed by special shuttering blocks, which are designed and dimensioned so that they can be used as masonry blocks for the production of a masonry building blocks wall, and can be combined with the masonry building with masonry blocks not formed by shuttering blocks and as the masonry blocks not formed by shuttering stones in the Masonry block composite can be integrated.

An example of how the formwork blocks can be integrated into the masonry building block network is in FIG. 1 illustrated.

The FIG. 1 shows a part of an unfinished outer wall of a building.

The reference character GD is a floor ceiling of the building. On the floor slab GD made of masonry blocks 1, 2 vertical wall M is provided. The wall M forms in the example considered after its completion a knee skirt, but could also be any other wall. At the point designated by the reference BS, a concrete support is to be created which extends vertically upward from the floor slab GD and is integrated into the wall M.

The wall M is made of masonry blocks 1, 2, which are arranged in a masonry block composite. The masonry building block composite consists in the example considered of several superimposed masonry block rows whose masonry blocks are selected and arranged so that the vertical joints between laterally adjacent masonry blocks do not come to lie one above the other.

The concrete support BS passes through the masonry blocks 1, which form the part of the wall running through the concrete column. As will be described in more detail later, the wall M is first constructed from the masonry blocks 1, 2, and then made by pouring a present in the wall vertical recess with liquid concrete, the concrete support BS. It is therefore no longer first made the concrete support and then adjoining wall parts erected, but only made the complete wall and then made by pouring a vertical recess in the wall, the concrete support.

The wall M consists of two types of masonry blocks, namely from the previously mentioned formwork blocks 1 and normal masonry blocks 2 such as clay bricks or other masonry blocks. The shuttering blocks 1 form the part of the wall which has passed through the concrete support BS. More specifically, all of the concrete support BS traversed masonry blocks, and preferably only these masonry blocks are formed by formwork blocks 1, whereas all other masonry blocks of the wall M are formed by the normal masonry blocks 2.

The shuttering blocks 1 have the same width as the normal masonry blocks 2 not formed by shuttering blocks, which is normally about the width corresponding to the wall thickness. The heights of the various masonry blocks 1, 2 are also the same size. The lengths of the various masonry blocks can 1, 2 can be different sizes.

Each shuttering block 1 is traversed by a vertical recess 11, which has a cross section corresponding to the concrete column cross-section. In the example considered, it is a rectangular cross section, but the cross section may also have any other shape. In the present case, the corners of the cross section to increase the stability of the shuttering blocks 1 are rounded, but there is no restriction on this.

The shuttering blocks 1 are integrated into the masonry block composite so that the vertical recesses 11 are aligned one above the other arranged shuttering blocks 1 and come to lie exactly where the concrete support BS is to arise.

These superimposed recesses 11 form the previously mentioned vertical recess of the wall M, which is poured for the production of concrete support BS with liquid concrete. The filled into the recesses 11 liquid concrete forms after curing the concrete support BS to be produced.

To increase the load capacity of the concrete support BS this is reinforced with, for example, with reinforcing steel strengthened. The recesses 11 of the shuttering blocks 1 are therefore designed and dimensioned so that their vertical recesses 11 are suitable for receiving reinforcement means, so for example can be traversed by reinforcing means. These reinforcing means are not shown in the figures.

As mentioned, the recess 11 is preferably poured only after the wall M is completed, more specifically, after the masonry brick composite is intended far pulled up.

The shuttering blocks 1 form a shuttering device, ie the casting mold for the concrete support BS to be produced. There is no additional formwork, support, stabilization, bracing, etc. required. The formwork blocks 1 can be poured with liquid concrete as installed in the wall M and are designed to withstand all forces acting on them before, during and after the wall construction / pouring.

The formwork blocks 1 remain after the completion of the concrete support BS in the wall, thus forming a so-called lost formwork. Since the shuttering blocks 1 have the same width as the normal masonry building blocks, where the concrete support is located, no further work, in particular no filling or disguising of columns, wall niches or the like must be made.

The formwork blocks 1 are preferably made of a good thermal insulation properties having material, so that no additional thermal insulation measures are required. In the example considered, the shuttering blocks 1 made of foamed plastic such as foamed polystyrene. However, it is also possible to use other plastics, for example PU foam, or completely different materials.

The shuttering blocks 1 may be formed in one piece or in several parts.

The FIG. 2A shows two integrally formed shuttering blocks 1 in plan view from above. The formwork blocks 1 shown have different lengths. The shuttering block 1 shown on the left is a short shuttering block, and the shuttering block 1 shown on the right is a long shuttering block. Formwork blocks with different lengths are needed to ensure the necessary and mandatory shock offset, that is the lateral offset of the vertical joints between juxtaposed masonry blocks in superimposed masonry block rows.

The FIG. 2B shows two two-part formwork blocks in a state in which the items are connected to each other as intended. Again, two shuttering blocks 1 of different lengths are shown. The short shuttering block 1 shown on the left consists of a first shuttering element 1-1 and a second shuttering element 1-2 connected thereto. The long formwork stone 1 shown on the right consists of the first formwork element 1-1 and a third formwork element 1-3 associated therewith.

The Figure 2C shows the in the FIG. 2B shown shuttering blocks 1 in a state in which the shuttering elements 1-1 and 1-2 or 1-1 and 1-3 are not connected to each other.

The first shuttering element 1-1 of the short shuttering block 1 and the first shuttering element 1-1 of the long shuttering block 1 are identical. The second formwork brick element 1-2 of the short formwork brick 1 and the third formwork brick element 1-3 of the long formwork brick 1 differ from each other, but only the length of the relevant Schalungsstein elements is different.

The connection of the shuttering stone elements to be connected to one another takes place via projections 13 provided on one of the shuttering block elements, which engage in complementary cutouts 14 provided on the shuttering element to be connected therewith. In the example considered, the projections 13 are provided on the shuttering elements 1-2 and 1-3, and the recesses 14 on the formwork elements 1-1. But this could be the other way around. It could also be provided that each formwork element has at least one projection 13 and at least one recess 14.

The projections 13 preferably extend vertically over the entire height of the sheeting element supporting them. You have in the example considered a T-shaped cross-section. It could also be provided a different cross-section, for example a mushroom-shaped or a dovetail-shaped cross-section, or another cross-section through which can be prevented that the connected formwork elements can be separated from each other by a longitudinal train.

The complementary recesses 14, as mentioned, extend vertically, like the projections 13, over the entire height of the formwork element containing them. To connect the shuttering elements, the projections 13 are inserted from above into the associated recesses 14 and the formwork elements then so far moved vertically to each other until they are at the same height.

The dividing line between the connected shuttering stone elements passes through - seen in plan view from above - preferably the shuttering stone 1 passing vertical Recess 11. This facilitates the production of the vertical recess. 1

In the example considered, the length of the relevant shuttering stone can be determined as desired by selecting the formwork stone elements to be assembled into a formwork block 1.

By a suitable other division of the formwork block 1 into individual parts and providing at least certain items in different sizes can be set as desired or additionally adapted to the given conditions by a suitable selection of zusammenzusetzenden to formwork stone items or alternatively other external dimensions of the relevant formwork stone.

Preferably, from the facing sides of superposed formwork blocks 1, the one side projections, and the other side complementary recesses, wherein the projections and recesses are arranged so that in the intended relative position of the shuttering blocks 1, the projections come to lie in the recesses , These projections and depressions are not shown in the figures.

The provision of said projections and recesses proves to be advantageous in several respects. First, the projections and depressions are so arranged and arranged that they can engage with each other only in the intended relative position of the respective formwork blocks 1, so automatically hold their formwork relative position when engaging protrusions and depressions formwork stones. In this state, the vertical recesses 11 of the shuttering blocks 1 are aligned, so that no control and alignment of the position of the vertical recesses 11 is required. Second, said projections and recesses prevent relative movements of intended use stacked shuttering stones in horizontal direction. Third, this increases the stability of the formwork blocks. In particular, the shuttering stones can better withstand the forces acting on them when pouring the vertical projection 11.

It may prove advantageous if a layer is applied to at least one side of the formwork blocks or a plate is placed, which consists of a different material than the rest of the formwork blocks. In particular, it can be provided that even in the production of formwork block 1 on one side of a tile or the like is attached to the veneer. As a result, for example, the side of the shuttering block 1 coming to rest on the outside of the building may be given the appearance and / or the surface properties of the normal masonry building blocks not formed by the shuttering blocks.

It can also be provided to provide at least one side of the shuttering stones with a mineral plaster base. This facilitates the plastering of the relevant shuttering stone sides.

Regardless of this, it can be provided that at least one side of the shuttering blocks 1 is provided with foam or mortar pockets, which are adapted to receive in the masonry used mounting foam, adhesive or mortar in it and thus to improve the connection to adjacent masonry blocks.

The formwork blocks described above can be used for the production of concrete columns, which are integrated anywhere in a wall in this.

The FIGS. 3A and 3B illustrate the use of formwork blocks 1 for making a in a building corner provided concrete support. FIG. 3A shows the top view of the building corner from above, and FIG. 3B a side view.

As can be seen from the figures, the building corner in the example considered by one-piece long shuttering blocks 1 (formwork blocks according to FIG. 2A right), wherein the shuttering blocks are rotated as shown by 90 ° (alternately clockwise and counterclockwise) with respect to the underlying shuttering stone.

The FIGS. 4A and 4B illustrate the use of shuttering blocks 1 for producing a provided in a soffit concrete support. FIG. 4A shows the top view of the soffit from above, and FIG. 4B a side view.

As can be seen from the figures, the soffit in the example considered is formed by alternately forming one-piece long shuttering blocks 1 (shuttering blocks according to FIG FIG. 2A right) and one-piece short shuttering blocks 1 (shuttering stones according to FIG. 2A left).

The FIGS. 5A and 5B finally illustrate the use of formwork blocks 1 for producing a provided in a straight piece of wall concrete support. FIG. 5A shows the top view of the wall from above, and FIG. 5B a side view. These are other representations of the already in the FIG. 1 shown use case.

As can be seen from the figures, the wall section passed through by the concrete support in the example under consideration is formed by forming long shuttering blocks 1 (shuttering blocks according to FIG FIG. 2A right) laterally offset from one another.

In an advantageous development of the invention, the shuttering blocks 1 have a cutout 15 in one of their side surfaces. Preferably, this cutout is on the formwork stone side provided, which comes to lie on the inside of the building facing the masonry wall on intended use of the shuttering stone 1, ie on the formwork stone side, which forms part of the inside wall of the wall. This section can be produced, for example, by cutting out a corresponding part 16 from the shuttering block 1. Of course, the cutout 15 can also be produced in any other way. A shuttering block 1 having such a cutout 15 and the shuttering block part 16 cut out to form the cutout 15 are shown in FIG FIG. 6 illustrated.

The cutout 15 is cuboid in the example considered. It is provided on one of the vertical edges of the shuttering block 1, preferably on an edge, which come to rest on the wall facing the inside of the building when the formwork block 1 is used as intended. The cutout 15 extends over the entire height, but only over a part of the width and over part of the length of the shuttering stone 1. It does not extend into the vertical recess 11 of the shuttering stone 1 inside.

In principle, the cutouts 15 can also have a different shape and / or a different position within the shuttering block.

Preferably, the cutout 15 is so large that in this a smaller brick block 21, which may be, for example, a smaller clay tile, can be used. This is in the FIG. 7 illustrated. Preferably, the cutout 15 is shaped and dimensioned so that there exactly fits a masonry block 21 with standardized standard dimensions.

The FIG. 8 shows a wall made using formwork blocks 1 according to FIG. 6 was built. The FIG. 8 shows the wall forming the inner wall. The in the figure 8th shown wall corresponds to that in the FIG. 1 shown wall, but the shuttering blocks 1 according to FIG. 6 were used and the cutouts 15 are filled with masonry blocks 21. To avoid misunderstandings, it should be noted that the masonry building blocks 21 are preferably inserted into the cutout 15 only after the installation of a respective formwork block 1 in the wall and fixed in the intended position by mortar or adhesive.

The provision of the cutouts 15 and filling them with normal masonry blocks 21 has the positive effect that thereby improved sound insulation and improved fire protection can be achieved at these locations.

In the above statements in relation to the shuttering blocks 1 with cutout 15, it was assumed that the cutout 15 is already formed by the manufacturer of the shuttering blocks 1. But this does not have to be this way. It is also possible to carry out only preparatory work for the production of the cutout 15 in the production of formwork bricks 1.

An example of this is in FIG. 9 shown. In the formwork block 1 shown there, the formwork stone part 16 to be cut out for producing the cutout 15 is only partially cut out and otherwise still firmly connected to the rest of the formwork block. In order to separate the formwork stone part 16 to be cut completely from the remainder of the formwork brick 1, a cut along a dotted line 17 must still be made. Such a cut, at least in the material used in the example under consideration (foamed plastic), can also be carried out without problem on a construction site with a commercially available saw.

In the example considered, there is even more relief. Namely, there is a mark 18 on the formwork block 1, which indicates to the responsible person where the cut to the intended cutting out of cut out formwork stone part 16 has to begin.

Preferably, the mark 18 consists of a small incision in the formwork stone 1. This incision is designed for insertion of the saw before the actual beginning of the sawing. Subsequent sawing creates a cut that automatically starts in the right place and runs in the right direction. Faulty cuts are reliably excluded, even in inexperienced persons.

Thus, it is possible to decide only on site, on formwork blocks are used with cutout 15 or no cutout 15. The production of shuttering blocks with cutout 15 is quickly and easily possible whenever needed. This also applies to shuttering stones or marking / incision 18.

The formwork apparatus described above proves advantageous in many respects regardless of the details of practical implementation. It makes it possible to produce the concrete columns of a concrete column-containing wall, and thus also the entire wall, particularly easily and quickly.

LIST OF REFERENCE NUMBERS

1

formwork

1-1

first formwork block element

1-2

second shuttering element

1-3

third shuttering element

2

normal masonry block

11

vertical recess in 1

13

Ahead at 1-2- and 1-3

14

Recess in 1-1

15

Detail in 1

16

part cut out of 1

17

Course of the cut to be carried out

18

Marking / incision

BS

concrete column

DG

floor ceiling

M

Wall

Claims (15)

Shuttering device for the production of concrete columns, in particular for the production of parts of a wall (M) forming vertical concrete columns (BS), characterized in that the shuttering device is formed by shuttering blocks (1),
which are traversed by a vertical recess (11), which has a cross section corresponding to the concrete column cross-section, and
which are further designed and dimensioned so that they can be used as masonry blocks for the production of masonry blocks existing wall, and in masonry with masonry blocks not formed by shuttering blocks (2) can be combined and how the masonry blocks not formed by shuttering blocks in the masonry building block integrated are. Shuttering device according to claim 1, characterized in that the shuttering blocks (1) have the same height as the masonry blocks (2) not formed by shuttering blocks, - The shuttering blocks (1) have the same width as the masonry blocks (2) not formed by shuttering blocks, and - The shuttering stones (1) have a wall thickness corresponding width. Formwork device according to one of the preceding claims, characterized in that the shuttering blocks (1) are adapted to be used for the production of concrete columns (BS) traversed wall sections, wherein the shuttering blocks (1) are designed so with the not by formwork blocks formed masonry blocks (2) that all of the concrete columns (BS) continuous masonry blocks are formed by formwork blocks, and wherein the shuttering blocks (1) are designed so as to be combined with the masonry blocks (2) not formed by shuttering blocks, that only the masonry blocks of the concrete columns (BS) are formed by formwork blocks. Shuttering device according to one of the preceding claims, characterized in that the shuttering blocks (1) are adapted to be integrated into the masonry block composite, that the vertical recesses (11) of the shuttering bricks come to rest there, where using the Formwork blocks to be produced concrete supports (BS) should be. Shuttering device according to one of the preceding claims, characterized in that the shuttering blocks (1) are designed and dimensioned such that their vertical recesses (11) are pourable with liquid concrete, wherein the liquid concrete forms the concrete supports (BS) to be produced in the hardened state. Shuttering device according to one of the preceding claims, characterized in that the shuttering blocks (1) are adapted to remain after pouring the vertical recesses (11) with liquid concrete in the wall (M). Shuttering device according to one of the preceding claims, characterized in that the shuttering blocks (1) are designed and dimensioned so that their vertical recesses (11) can be traversed by reinforcing means. Shuttering device according to one of the preceding claims, characterized in that the shuttering blocks (1) consist of a good thermal insulation properties having material. Shuttering device according to one of the preceding claims, characterized in that the shuttering blocks (1) made of foamed plastic, or made of foamed polystyrene, or made of foamed polyurethane. Shuttering device according to one of the preceding claims, characterized in that the shuttering blocks (1) are integrally formed. Shuttering device according to one of claims 1 to 9, characterized in that the shuttering blocks (1) are each composed of several individual parts (1-1, 1-2, 1-3). Shuttering device according to claim 11, characterized in that - in the plan view from above - the dividing line between two individual parts (1-1, 1-2, 1-3) of a formwork block (1) through the vertical recess (11) passes therethrough, so that the length and / or the width of a respective shuttering block (1) can be adapted to the given conditions as desired by a suitable selection of the individual parts (1-1, 1-2, 1-3) to be assembled to the respective shuttering block. Formwork device according to one of the preceding claims, characterized in that from the mutually facing sides of superposed formwork blocks (1), the one side has projections (13), and the other side complementary recesses (14), wherein the projections and the recesses so are designed and arranged so that they can be engaged with each other only in the intended relative position of shuttering stones. Shuttering device according to one of the preceding claims, characterized in that the shuttering blocks (1) have in one of their side surfaces a cutout (15) which is designed to receive a smaller masonry block (21). Shuttering device according to claim 14, characterized in that the cutout (15) is provided on the shuttering stone side, which comes to rest on the wall of the building facing the inside of the building when the shuttering stone is used as intended.

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