EP2960392B1 - Ceilings edge formwork element - Google Patents

Description

The present invention relates to a slab edge formwork element according to the preamble of patent claim 1.

Such a ceiling edge formwork element is, for example, from DE 10 2012 108 662 A1 famous.

By assembling several such or other slab edge formwork elements, a slab edge formwork can be formed, which is used in the production of storey slabs of buildings and which remains in the building, i.e. as a so-called lost (edge) formwork for the storey slab. The use of slab edge formwork is shown schematically in figure 11 illustrated. the figure 11 shows a cross section through part of a building containing a ceiling edge formwork composed of several ceiling edge formwork elements. In the figure 11 denoted by 91 is a wall constituting an outer wall of a building, by 92 is a floor slab, and by 93 is a slab edge formwork. In the example under consideration, the slab edge formwork elements 93 are placed on the part of the wall, for example on the row of bricks, on which the lateral edge of the storey slab 92 also rests. The slab edge formwork elements 93 are attached before the storey slab 92 is produced. The slab edge formwork elements 93 are usually attached to the part of the wall below with the aid of an adhesive or mortar. Then the floor slab 92 is produced, with the slab edge formwork elements 93 being usable as permanent (edge) formwork for a concrete slab produced, for example, by liquid concrete. The wall 91 can then be raised further.

The ceiling edge formwork elements 93 are flush with the outside of the wall 91, but have a smaller width than the portions of Wall 91 below and above. The lateral edge of the floor slab 92 rests on the part of the wall not covered by the slab edge formwork elements 93 .

Slab edge formwork elements have to meet a wide variety of requirements.

First of all, slab edge formwork elements must of course be so stable and resilient that they can absorb the forces acting on them when used as intended.

Secondly, slab edge formwork elements should have the best possible thermal insulation properties. It should be noted here that at least in Germany it will be required from 2014 that the support depth of the floor slab 92 must meet certain minimum requirements. More specifically, the floor 92 must rest on the wall that supports it for at least 2/3 of the thickness of the latter. This means that the maximum width of the slab edge formwork elements is 1/3 of the thickness of the wall 91. This is less than before, because up until now there have been no regulations with regard to the support depth. As a result, it becomes even more difficult to comply with thermal insulation regulations.

Third, slab edge formwork elements should be designed in such a way that they can absorb relative movements (caused, for example, by different thermal expansion and/or vibrations) between the floor slab 92 and the wall 91, otherwise cracks could develop in the wall 91 or in a layer of plaster applied to it.

And fourthly, slab edge formwork elements should be as easy to manufacture and process as possible.

The above mentioned in the DE 10 2012 108 662 A1 Slab edge formwork element described has compared to others Conventional slab edge formwork elements have the special feature that it consists of two individual parts that are to be plugged into one another at the side, with various cavities being created between the two individual parts when they are plugged into one another. Due to these cavities and the resulting increased compressibility of the ceiling edge formwork elements, the above-mentioned relative movements between the storey ceiling and the wall can be better absorbed than is the case with other conventional ceiling edge formwork elements. However, even such slab edge formwork elements are not optimal. Practice shows that, among other things, the thermal insulation is not optimal.

Further prior art is from the documents DE 27 14 578 A1 , DE 197 36 278 A1 , WO 00/61879 A , DE 201 19 250 U1 , FR 2 941 725 A , GB 909 035 A , DE 299 13 611 U1 , and DE 10 2011 050031 A1 famous. In document DE 27 14 578 A1 a slab edge formwork element according to the preamble of patent claim 1 is described.

The present invention is therefore based on the object of further developing the slab edge formwork element according to the preamble of patent claim 1 in such a way that it has better thermal insulation properties.

This object is achieved according to the invention by the slab edge formwork element claimed in claim 1 .

The fact that the ceiling edge formwork element according to the invention is composed of several individual parts makes it possible in a very simple manner to achieve an optimal compromise between the thermal insulation properties of the ceiling edge formwork element, the resilience of the ceiling edge formwork element, and the ability of the ceiling edge formwork element to absorb forces acting on it.

In the slab edge formwork element claimed in claim 1, the slab edge formwork element parts forming the slab edge formwork element are designed such that they can be connected to one another from above by attaching the second slab edge formwork element part to the first slab edge formwork element part.

In this way, it is possible to prevent problems that prevent or impede proper attachment from occurring when the second ceiling edge formwork element part is attached to the first ceiling edge formwork element part that has already been placed on the wall. In particular, plugging on from above cannot result in any displacement of the adhesive or mortar applied to the wall, by means of which the ceiling edge formwork element parts are attached to the wall. This in turn has the positive effect that, firstly, no adhesive or mortar can get between the slab edge formwork element parts and, secondly, that a full-surface, even connection is created between the slab edge formwork element parts and the wall. In addition, there is no risk of the first slab edge formwork element part being displaced or tilted by the lateral placement of the second slab edge formwork element part. This means that with the ceiling edge formwork element according to claim 1 there is no or at least no significant risk of the two ceiling edge formwork element parts not being put together as intended and/or not being connected to the underlying wall as intended. Unlike the one in the DE 10 2012 108 662 A1 Ceiling edge formwork element described, there is no risk in the ceiling edge formwork element according to claim 1 that thermal bridges or other effects occur that have a negative impact on the thermal insulation properties of the ceiling edge formwork element.

Through the at least one stage and the elevations and depressions of the first ceiling edge formwork element part and the complementary design of the second slab edge formwork element part ensures that the slab edge formwork element parts can be brought into their intended relative position particularly quickly, easily and reliably and maintain this position, which in turn is a guarantee that the assembled slab edge formwork element has the desired properties and this maintains.

Advantageous developments of the invention can be found in the following description, the figures and the dependent claims.

Figur 1

eine perspektivische Ansicht eines im Folgenden näher beschriebenen ersten Ausführungsbeispiels des hier vorgestellten Deckenrandschalungselements,

Figur 2

eine Schnittdarstellung des in der Figur 1 gezeigten Deckenrandschalungselements,

Figur 3

eine perspektivische Ansicht eines ersten Deckenrandschalungselement-Teils des in der Figur 1 gezeigten Deckenrandschalungselements,

Figur 4

eine perspektivische Ansicht eines zweiten Deckenrandschalungselement-Teils des in der Figur 1 gezeigten Deckenrandschalungselements,

Figur 5

eine perspektivische Ansicht eines Ankers zur zusätzlichen Fixierung des in der Figur 1 gezeigten Deckenrandschalungselements in seiner bestimmungsgemäßen Lage,

Figur 6

eine perspektivische Ansicht eines unter Verwendung eines weiteren Deckenrandschalungselement-Teils verbreiterten Deckenrandschalungselements gemäß Figur 1,

Figur 7

eine perspektivische Ansicht des weiteren Deckenrandschalungselement-Teils des in der Figur 6 gezeigten Deckenrandschalungselements,

Figur 8

eine Schnittdarstellung des in der Figur 6 gezeigten Deckenrandschalungselements,

Figur 9

eine perspektivische Ansicht eines ersten Ausführungsbeispiels eines ein Eckstück bildenden Deckenrandschalungselements,

Figur 10

eine perspektivische Ansicht eines zweiten Ausführungsbeispiels eines ein Eckstück bildenden Deckenrandschalungselements, und

Figur 11

den vorstehend bereits beschriebenen, Deckenrandschalungselemente enthaltenden Teil einer Mauer eines Gebäudes,

The invention is explained in more detail below using exemplary embodiments with reference to the figures. Show it

figure 1

a perspective view of a first exemplary embodiment of the slab edge formwork element presented here, which is described in more detail below,

figure 2

a sectional view of in the figure 1 slab edge formwork element shown,

figure 3

a perspective view of a first part of the ceiling edge formwork element in FIG figure 1 slab edge formwork element shown,

figure 4

a perspective view of a second part of the ceiling edge formwork element in FIG figure 1 slab edge formwork element shown,

figure 5

a perspective view of an anchor for additional fixation in the figure 1 the slab edge formwork element shown in its intended position,

figure 6

a perspective view of a ceiling edge formwork element widened using a further part of the ceiling edge formwork according to FIG figure 1 ,

figure 7

a perspective view of the other part of the ceiling edge formwork element in FIG figure 6 slab edge formwork element shown,

figure 8

a sectional view of in the figure 6 slab edge formwork element shown,

figure 9

a perspective view of a first embodiment of a corner piece forming a ceiling edge formwork element,

figure 10

a perspective view of a second embodiment of a corner piece forming a slab edge formwork element, and

figure 11

the part of a wall of a building that has already been described above and contains slab edge formwork elements,

The slab edge formwork element presented here has the same functions as above with reference to FIG figure 11 described conventional slab edge formwork element 93. It is also designed to be built into the wall at the same place as the slab edge formwork element 93. More specifically, it is designed to be placed on top of the part of the wall on which the floor slab also rests, and to be fixed using an adhesive or using mortar, or in any other way to the part of the wall supporting the slab edge formwork element.

In the example considered, the wall is a brick wall, the bricks being clay bricks in the example considered, but they could also consist of sand-lime brick, lightweight concrete, aerated concrete or any other materials. The part of the wall on which the ceiling edge formwork elements are placed can, in principle, consist of any material and be composed of any number, any size, and any design elements. Prefabricated wall elements can also be used. It will be appreciated that, depending on the nature of the wall, other methods of attaching the slab edge formwork to the wall may or must be used.

A first embodiment of the ceiling edge formwork element presented here is in the Figures 1 and 2 illustrates where the figure 1 shows a perspective view of the ceiling edge formwork element, and the figure 2 a sectional view of the ceiling edge formwork element. That in the Figures 1 and 2 The ceiling edge formwork element shown is denoted there by the reference number 1 .

The slab edge formwork element 1 is composed of several individual parts. More precisely, it consists of a first ceiling edge formwork element part 11 and a second ceiling edge formwork element part 12 connected to the first ceiling edge formwork element part 11 Figures 3 and 4 perspective views of these items are shown.

The first slab edge formwork element part 11 and the second slab edge formwork element part 12 have the same height and the same length, but can have different widths independently of one another. To avoid misunderstandings, the figure 1 indicated in which directions the length l, the height h and the width b extend.

The slab edge formwork element parts 11 and 12 are designed to be connected to one another by plugging them together. The connection is made in that the second slab edge formwork element part 12 is pushed onto the first slab edge formwork element part 11 from above. The slab edge formwork element parts 11 and 12 come to lie one behind the other in relation to the width direction b. The height of the resulting slab edge formwork element is equal to the height of the slab edge formwork element parts 11 and 12.

If the first slab-edge formwork element part 11 and the second slab-edge formwork element part 12 were put together without a mutual offset in the longitudinal direction, an essentially cuboid body would be obtained. As will be explained later in more detail, the first slab edge formwork element part 11 and the second slab edge formwork element part 12 can, however, be plugged together offset in relation to the longitudinal direction. This is even the preferred way of assembling the slab edge formwork parts 11 and 12; assembly without a longitudinal offset is theoretically possible, but should be avoided.

When assembled as intended, the first slab edge formwork element part 11 and the second slab edge formwork element part 12 are fixed to one another and preferably can no longer be moved relative to one another.

In the example considered, the height of the slab edge formwork element 1 is equal to the height of the floor slab. The width is preferably adapted to the thickness of the wall and is 1/3 of the thickness of the wall. The length of the slab edge formwork element parts 11 and 12 is 1 m in the example under consideration, but can also be arbitrarily larger or smaller.

When the ceiling edge formwork element 1 is properly installed in the wall, the side 111 of the first ceiling edge formwork element part 11 facing away from the second ceiling edge formwork element part 12 comes to rest on the outside of the wall and thus forms part of the outer surface of the wall.

The first ceiling edge formwork element part 11 consists of heat-insulating material which has the best possible heat-insulating properties and at the same time is so stable that it is only slightly compressed by the forces acting on it during intended use. In the example under consideration, foamed plastics, for example polystyrene or polystyrene mixed with graphite, are used. These materials are known, for example, under the brand names Styropor or Neopor. However, it should already be pointed out at this point that there is no compelling need to produce the first slab edge formwork element part 11 from the materials mentioned. Any other materials can also be used which have good thermal insulation properties and withstand the mechanical stresses occurring during intended use, for example foamed polyurethane, foamed polyethylene, or the material known by the brand name Styrodur.

The previously mentioned side 111 of the first ceiling edge formwork element part 11 on the outside of the building is a substantially flat vertical surface which can have smaller elevations, depressions or other structures which improve the suitability of the surface 111 as a plaster base.

The upper side and the lower side of the first slab edge formwork element part 11 are essentially flat horizontal surfaces, which can have smaller elevations, depressions, or other structures that ensure a better hold of the slab edge formwork element on the adjacent wall sections.

The side of the first ceiling edge formwork element part 11 opposite the side 111, ie the side 112 of the first ceiling edge formwork element part 11 facing the second ceiling edge formwork element part 12, is stepped. More specifically, the side 112 descends in three stages from the narrower top to the wider bottom, the number of stages also being larger or smaller. A vertical depression 113 or 115 is formed in each step, so that as a result vertical depressions 113 or 115 and vertical elevations 114 or 116 follow one another in alternation. The elevations and depressions mentioned each have an essentially rectangular cross section, but can also have other cross sections.

At the upper end of the side 112 there is a locking lug 117 which extends in the horizontal direction and under which a locking lug which is present on the second ceiling edge formwork element part 12 can engage.

The second ceiling edge formwork element part 12 consists of heat-insulating material which has the best possible heat-insulating properties and at the same time is so stable that it can withstand the forces acting on it during normal use Forces is only slightly compressed. In the example under consideration, the same material is used as for the first slab edge formwork element part 11.

However, the first slab edge formwork element part 11 is preferably designed to be harder or less easily deformable than the second slab edge formwork element part 12. In the example under consideration, the slab edge formwork element parts 11 and 12 are made of Neopor, and the density of the first slab edge formwork element part 11 is 33 kg /m ³ , and the density of the second slab edge formwork part 12 is 30 kg/m ³ . However, it should be expressly pointed out that there is no restriction to the specified density values. The densities can be independently larger or smaller.

When the ceiling edge formwork element 1 is properly installed in the wall, the side 121 of the second ceiling edge formwork element part 12 facing away from the first ceiling edge formwork element part 11 comes to rest on the inside, ie it is the side facing the storey ceiling.

This side 121 of the second ceiling edge formwork element part 12 on the inside of the building is a substantially flat vertical surface. In this area, two horizontally running recesses 122 with a rectangular cross section are provided, extending over the entire length of the second ceiling edge formwork element part 12, the function of which will be explained in more detail later.

On the building-inside side 121 of the second ceiling-edge formwork element part 12 there is also a horizontally extending further recess 123 extending over the entire length of the second ceiling-edge formwork element part 12 . This recess 123 is an angle in cross section with a first leg extending horizontally inward from the side 121 and a first leg lying from the inside End of leg at right angles downwards outgoing second leg. The function of this recess 123 will be explained in more detail later.

The upper side and the underside of the second ceiling edge formwork element part 12 are essentially flat horizontal surfaces that can have smaller elevations, depressions, or other structures that ensure a better hold of the ceiling edge formwork element on the adjacent wall sections.

The side of the second slab edge formwork element part 12 opposite side 121, i.e. the side 124 of the second slab edge formwork element part 12 facing the first slab edge formwork element part 11, is designed to complement the side 112 of the first slab edge formwork element part 11 facing side 124. That is to say, the side 124 also has alternating vertical elevations and vertical depressions, the vertical elevations being denoted by the reference symbols 125 and 127 and the vertical depressions being denoted by the reference symbols 126 and 128. The elevations and depressions mentioned each have a substantially rectangular cross section.

The elevations 114 and 116 and the indentations 113 and 115 of the first slab edge formwork element part 11, and the elevations 125 and 127 and the indentations 126 and 128 of the second slab edge formwork element part 12 are designed in such a way that the elevations of the first slab edge formwork element part 11 in the depressions of the second ceiling edge formwork element part 12 come to rest, and the elevations of the second ceiling edge formwork element part 12 come to rest in the depressions of the first ceiling edge formwork element part 11 . At the tops of ridges 126 and 128 are bevels 129 is provided, the function of which will be explained in more detail later.

The elevations 114, 116, 125 and 127 do not completely fill the depressions 113, 115, 126 and 128 in which they come to rest. In some sections, the elevations have a smaller width and/or a smaller height than the associated depressions. Cavities 13 to 17 are formed in the areas of the depressions that are not filled by the elevations. As a result, the slab edge formwork element 1 can absorb forces acting in the direction of the first slab edge formwork element part 11 . These forces which can be absorbed by the slab edge formwork element 1 include, in particular, those forces which are exerted by the storey slab on the slab edge formwork element 1 due to vibrations, thermal expansion or other causes.

In the upper area of the first slab edge formwork element part 11 facing side 124 of the second slab edge formwork element part 12 goes from this one extending in the horizontal direction locking lug 130, the intended assembled, so in the in the Figures 1 and 2 shown state of the slab edge formwork element parts 11 and 12 is engaged under the above-mentioned locking lug 117 of the first slab edge formwork element part 11.

As already mentioned above, the slab edge formwork element parts 11 and 12 are characterized in the in the Figures 1 and 2 brought to the intended end state shown, that the second ceiling edge formwork element part 12 is placed from above onto the first ceiling edge formwork element part 11 . This placement is made possible by the above-mentioned bevels 129 at the ends of the elevations 125 and 127 of the second ceiling edge formwork element part 12 facilitates. The elevations 125 and 127 are automatically guided into the associated depressions 113 and 115 of the first ceiling edge formwork element part 11 by the bevels 129 . At the same time, the elevations 114 and 116 of the first slab edge formwork element part 11 reach the associated depressions 126 and 128 of the second slab edge formwork element part 12. While the second slab edge formwork element part 12 is being attached to the first slab edge formwork element part 11, this happens shortly before the in the Figures 1 and 2 shown end position, the locking lug 130 of the second ceiling edge formwork element part 12, the locking lug 117 of the first ceiling edge formwork element part 11 and snaps under this. The intended end state has thus been reached. In this state, the second slab-edge formwork element part 12 strikes the first slab-edge formwork element part 11 and can no longer be moved further down. Due to the latching connection effected by the latching lugs 117 and 130, the first ceiling edge formwork element part 11 can also no longer be moved upwards.

Although, as already mentioned above, there are various cavities 13 to 17 between the first slab edge formwork element part 11 and the second slab edge formwork element part 12, the slab edge formwork element parts 11 and 12 cannot be moved relative to one another even in the horizontal direction. This is because the elevations are only partially smaller than the depressions in which they are located. More precisely, the front ends of the projections are no narrower than the depressions in which they come to rest. Thus, the elevations cannot move within the depressions. To put it more precisely, a movement in the direction of the width b is completely impossible, and a movement in the direction of the length l is at least made more difficult. The elevations preferably sit so tightly in the depressions that due to the frictional forces to be overcome no movement at all in the direction of length l is possible.

When the slab edge formwork element parts 11 and 12 are connected to one another as intended, the resulting slab edge formwork element 1 has essentially flat horizontal upper and lower sides. Both the tops of the slab edge formwork element parts 11 and 12 and the undersides of the slab edge formwork element parts 11 and 12 abut one another without gaps and without a height offset.

The ceiling edge formwork elements 1 can also use one in the figure 5 shown anchor 18 are fixed in their intended position.

The armature 18 is an angle with a horizontal leg and a vertical leg extending vertically downwards from the latter, with a hole 181 being provided in the horizontal leg.

The anchor 18 can be pushed from the side into the angular recess 123 provided in the second part 12 of the slab edge formwork element. In the figure 1 illustrates the state in which this has already happened. When the anchor 18 is installed as intended on the second ceiling edge formwork element part 12 , the leg of the anchor 18 containing the hole 181 projects horizontally out of the second ceiling edge formwork element part 12 .

A first end of a wire, a cord, or the like can now be attached to this hole 181 . The other end can then be attached, for example, to the reinforcing steel for the floor slab or to another non-movable part of the building. As a result, the slab edge formwork element cannot be moved out of its intended position and out of its intended location even by very large forces.

An even better protection against tilting or shifting of the slab edge formwork element 1 can be achieved with the aid of the anchor 18 .

The armature 18 is preferably made of a material with poor thermal conductivity, for example a plastic, but can in principle also be made of any other material.

The connection of the slab edge formwork element parts 11 and 12 by placing the second slab edge formwork element part 12 from above enables a particularly simple and quick production of a slab edge formwork. This prevents, among other things, that the first ceiling edge formwork element 11, which has already been placed and adjusted on the wall, is displaced laterally. This can also prevent the adhesive or mortar, which is used to attach the ceiling edge formwork elements to the wall, from being laterally displaced by the second ceiling edge formwork element part 12 during assembly. Thus, no adhesive or mortar can get between the slab edge formwork element parts 11 and 12, and it is ensured that the slab edge formwork elements are connected to the adjacent wall sections over the entire surface and evenly. In addition, it is guaranteed under all circumstances that the slab edge formwork element parts 11 and 12 in the assembled state exactly assume a predetermined relative position and cannot leave it.

As already explained above, the above-mentioned cavities 13 to 17 between the slab edge formwork element parts 11 and 12 allow forces acting on the slab edge formwork element 1 to be able to be absorbed. The same positive effect can be achieved if the cavities are filled with third slab edge formwork parts, which are made of a very easily deformable elastic material. The material is preferably much softer and more easily compressible than the slab edge formwork element parts 11 and 12, so that the slab edge formwork element 1 can be compressed to a similar extent with the same effort as if only the unfilled cavities were provided. A material that can be used for this purpose is a foamed plastic, for example a soft foam. It should be obvious and does not require any further explanation that the third ceiling edge formwork element parts can also consist of any other materials that have the desired properties.

The filling of the cavities with the third slab edge formwork element parts has the positive effect that the thermal insulation properties of the slab edge formwork element 1, which are already good in any case, are further improved as a result. This applies in particular when the third ceiling edge formwork element parts consist of a particularly good thermally insulating material.

If the cavities are filled with the third slab edge formwork element parts, the cavities filled by the third slab edge formwork element parts can be made larger without impairing the thermal insulation properties of the slab edge formwork element parts, as a result of which the slab edge formwork element is even more compressible, i.e. can absorb even greater forces.

The third slab edge formwork element parts can be correspondingly shaped, for example cuboid, individual parts which are fastened to the corresponding points on the first slab edge formwork element part 11 or on the second slab edge formwork element part 12 before the first and second slab edge formwork element parts 11 and 12 are assembled. There are several options for fastening. A first possibility is that the third slab edge formwork element parts on the first slab edge formwork element part 11 or glued to the second slab edge formwork element part 12. Another possibility is that complementary structures, such as depressions and associated elevations, are provided on the third slab edge formwork element parts and the first and second slab edge formwork element parts 11 and 12, so that the third slab edge formwork element parts can be placed on the first or second slab edge formwork element -Part 11 or 12 can be plugged on and held on it by a clamping effect. The attachment could also be done by snap-in connections. Casting or spraying on the third slab edge formwork element parts would also be conceivable.

The slab edge formwork element 1 can of course be manufactured in different heights. The height of the slab edge formwork element preferably corresponds to the thickness of the slab that is to be produced using the slab edge formwork elements.

The slab edge formwork element 1 can of course also be produced in different widths. In order to optimize the thermal insulation properties, the width is preferably chosen to be as large as possible, but, as already mentioned, may not exceed 1/3 of the wall thickness. Therefore, the optimal thickness of the ceiling edge formwork element 1 depends on the wall thickness.

A particularly simple way to produce ceiling edge formwork elements 1 in the desired thickness is in the Figures 6 to 8 illustrated.

The provision of different thickness ceiling edge formwork elements 1 is done here in that, if necessary, in the Figures 1 and 2 slab edge formwork element 1 shown, a further (fourth) slab edge formwork element part 19 increasing the thickness is attached. The resulting slab edge formwork element is in the figure 6 perspective, and in the figure 8 shown in a sectional view. The fourth ceiling edge formwork element part 19 alone is perspective in the figure 7 shown.

In the example under consideration, the fourth slab-edge formwork element part 19 is placed laterally, if required, on the side 121 of the second slab-edge formwork element part 12 facing away from the first slab-edge formwork element part 11 . For this purpose, the fourth slab-edge formwork element part 19 has horizontal elevations 191 on its side facing the second slab-edge formwork element part 12, which extend over the entire length of the fourth slab-edge formwork element part 19 and are complementary to those on the side 121 of the second slab-edge formwork element -Part 12 provided depressions 122 are formed. When the fourth slab edge formwork element part 19 is laterally attached to the second slab edge formwork element part 12, the elevations 191 of the fourth slab edge formwork element part 19 come to rest in the depressions 122 of the second slab edge formwork element part 12 and are held therein by a clamping effect.

The fourth ceiling edge formwork element part 19 has depressions 192 on its side facing away from the second ceiling edge formwork element part 12 , which depressions 122 correspond to the depressions 122 provided in the second ceiling edge formwork element part 12 . A further fourth ceiling edge formwork element part 19 can be attached to the fourth ceiling edge formwork element part 19 using these depressions.

Thus, 19 ceiling edge formwork elements with different thicknesses can be created using one or more fourth ceiling edge formwork element parts.

The fourth slab edge formwork element part 19 also has on its side facing the second slab edge formwork element part 12 and on its side away from the second slab edge formwork element part 12 side facing away from lateral incisions 193 and 194 at different heights. These incisions represent predetermined breaking points at which the fourth ceiling edge formwork element part 19 can be broken. This makes it possible to adapt the height of the fourth slab edge formwork element part 19 to the height of the first and second slab edge formwork element parts 11 and 12 . This has the positive effect that the fourth ceiling edge formwork element part 19 can be used with any height of the first and second ceiling edge formwork element parts 11 and 12 . If the fourth ceiling edge formwork element part 19 as in the figure 8 If the slab edge formwork element shown is higher than the first and second slab edge formwork element parts 11 and 12 that are used, the protruding part of the fourth slab edge formwork element part 19 can simply be broken off at one of the existing lateral incisions 193 or 194 and the height can thus be adapted to the given conditions .

The fourth slab edge formwork element parts 19 are preferably attached to the second slab edge formwork element part 12 before this is placed on the first slab edge formwork element part 11

In the example under consideration, the fourth slab-edge formwork element parts 19 consist of the same material as the second slab-edge formwork element part 12, but could also consist of any other material.

Corner pieces intended for use in building corners can also be created using the above-described slab edge formwork elements or slab edge formwork element parts. the Figures 9 and 10 show perspective views of such corner pieces. The figure 9 a corner piece for an outside corner, and the figure 10 a corner piece for an inside corner.

The corner pieces denoted by the reference numerals 2 and 3 in the figures are likewise composed of several individual parts, like the straight slab edge formwork elements 1 described above. In particular, they also include a first slab edge formwork element part 21 or 31 and a second slab edge formwork element part 22 or 32.

The first slab edge formwork element parts 21 and 31 are in turn each composed of two straight slab edge formwork element parts 11 . The two straight slab edge formwork element parts 11 are cut off at one of their ends at a 45° angle and are connected to one another at these ends, for example by gluing or any other desired manner.

The second slab edge formwork element parts 22 and 32 are each composed of two straight slab edge formwork element parts 12 . The two straight slab edge formwork element parts 12 are cut off at one of their ends at a 45° angle and are connected to one another at these ends, for example by gluing or any other desired manner.

For the sake of completeness, it should be noted that not only corner pieces for right-angled corners can be produced by appropriately cutting the straight ceiling edge formwork element parts. The corner angle can be selected in any size, so that suitable corner pieces can be produced for any corner of the building.

The first slab edge formwork element parts 21 or 31 and the second slab edge formwork element parts 22 or 32 are assembled in the same way as with the straight slab edge formwork elements, namely by attaching the second slab edge formwork element part to the first slab edge formwork element part, with the corner pieces also being the first Ceiling edge formwork element part 21 or 31 comes to rest on the outside.

Everything else that also applies to the straight ceiling edge formwork elements 1 also applies to the ceiling edge formwork element corner pieces 2 and 3 . To avoid repetition, reference is made in this regard to the above statements.

The fact that the slab edge formwork elements also have special slab edge formwork element corner pieces 2 or 3 proves to be advantageous, because the manufacture of slab edge formwork usually begins in a building corner, i.e. the manufacture of the slab edge formwork with the assembly of a slab edge formwork element corner piece 2 or 3 begins and thus the further production of the ceiling edge formwork can be influenced by a special design of the corner piece. For this reason, in the example under consideration, slab edge formwork element corner pieces 2 and 3 are used, in which the ends of the legs of the first slab edge formwork element parts 21 and 31 facing away from the corner come to lie at different points than the ends of the legs facing away from the corner of the second slab edge formwork element parts 22 and 32, ie the first slab edge formwork element parts 21 and 31 and the second slab edge formwork element parts 31 and 32 only partially overlap one another.

Here, as with the in the Figure 9 and 10 slab edge formwork element corner pieces 2 and 3 shown, the second slab edge formwork element part 22 or 32 ends before the first slab edge formwork element part 21 or 31. However, it would also be possible for the first ceiling edge formwork element part 21 or 31 to end in front of the second ceiling edge formwork element part 22 or 32 .

If, after the installation of a slab edge formwork element corner piece 2 or 3, an adjoining straight slab edge formwork element 1 is installed, then one first places it adjacent to the first slab edge formwork element part 21 or 31 a straight first slab edge formwork element part 11, and then places a straight second slab edge formwork element part 12 adjacent to the second slab edge formwork element part 22 or 32. In the resulting arrangement, the joints between adjacent first slab-edge formwork element parts are always laterally offset relative to the joints between adjacent second slab-edge formwork element parts. It is impossible for joints between adjacent first slab edge formwork element parts and joints between adjacent second slab edge formwork element parts to adjoin one another or come to lie directly one behind the other. Joints between adjacent first ceiling edge formwork element parts are covered by joint-free areas of the second ceiling edge formwork element parts, and joints between adjacent second ceiling edge formwork element parts are covered by joint-free areas of the first ceiling edge formwork element parts. There can therefore be no joints that run completely through the slab edge formwork. This has the positive effect that a slab edge formwork produced in this way firstly has better thermal insulation properties and secondly is more interlocked and therefore more stable.

The special design of the corner pieces forces the person producing the slab edge formwork to arrange the first and second slab edge formwork element parts with the advantageous mutual lateral offset.

It should be obvious and does not require any further explanation that the slab edge formwork elements described above can be modified in many ways.

For example, there is no compelling need for the various elevations and depressions provided on the mutually facing sides of the first slab edge formwork element part and the second slab edge formwork element part to be arranged, shaped and dimensioned exactly as shown in shown in the figures and described above. Although the arrangement, shape, size and number of elevations and depressions shown and described are the currently preferred arrangement, shape, size and number, there are clearly innumerable possible variations.

The same applies to the elevations and depressions, using which the fourth slab edge formwork element part 19 is connected to the second slab edge formwork element part or a further fourth slab edge formwork element part. These elevations and depressions can also be modified in many ways in terms of arrangement, shape, size and number.

• dass die Befestigung unter Verwendung von das vierte Deckenrandschalungselement-Teil ganz durchlaufenden und sich bis in das benachbarte Deckenrandschalungselement-Teil hinein erstreckenden Nägeln, Stiften oder dergleichen erfolgt, oder
• dass die Befestigung unter Verwendung von von oben und/oder unten aufgesetzten U-förmigen Klammern, Winkeln, Profilleisten oder dergleichen erfolgt, oder
• dass die Befestigung durch Kleben erfolgt,

wobei dies nicht als eine abschließende Aufzählung anzusehen ist, sondern nur eine kleine Auswahl der vorhandenen Möglichkeiten ist.It is also not absolutely necessary for the fourth slab edge formwork element part 19 to be connected to the second slab edge formwork element part or to a further fourth slab edge formwork element part using elevations or depressions provided thereon. Possible alternatives are, for example,

• that the fastening takes place using nails, pins or the like that run right through the fourth slab edge formwork element part and extend into the adjacent slab edge formwork element part, or
• that the attachment is made using U-shaped brackets, brackets, profile strips or the like attached from above and/or below, or
• that the attachment is done by gluing,

This is not to be regarded as an exhaustive list, but only a small selection of the available options.

Although it is currently considered advantageous that the slab edge formwork element parts connected to one another can no longer move relative to one another when connected to one another, there is no restriction to this either. This means that, at least under certain circumstances, a relative mobility of the slab edge formwork element parts connected to one another can also be provided. This applies in particular in cases in which mobility is restricted, for example if movements can only take place in a certain direction, or if movements can only take place to a certain maximum extent, or if movements can only take place with great effort, or if Movements can only take place with certain tricks (so that no unintentional independent relative movements can take place). Under certain circumstances, you also have to accept unintentional relative movements. This is the case, for example, if the slab edge formwork element parts cannot be manufactured differently, or at least not with reasonable effort, or if the relative mobility is a consequence of the unavoidable variance during manufacture and only occurs in exceptional cases.

However, the slab edge formwork element presented here proves to be very advantageous in several respects, regardless of the details of the practical implementation. In particular, particularly good thermal insulation and particularly good force absorption can be achieved with slab edge formwork elements of the type presented with particularly simple and rapid processing.

Reference List

1

Slab edge formwork element

11

first slab edge formwork element part

111

of 12 facing away from the outside of the building of 11

112

12 facing side of 11

113

deepening to 11

114

elevation to 11

115

deepening to 11

116

elevation to 11

117

Detent on 11

12

second slab edge formwork element part

121

of 11 facing away from the inside of the building of 12

122

horizontally extending indentations in 121

123

angular recess in 121

124

11 facing side of 12

125

elevation to 12

126

deepening to 12

127

elevation to 12

128

deepening to 12

129

Detent at 12

13

Cavity or third slab edge formwork part

14

Cavity or third slab edge formwork part

15

Cavity or third slab edge formwork part

16

Cavity or third slab edge formwork part

17

Cavity or third slab edge formwork part

18

anchor

181

hole in 18

19

fourth slab edge formwork element part

191

horizontally extending elevations on 19

192

horizontally extending indentations in 19

193

first cuts in 19

194

second cuts in 19

2

Slab edge formwork element corner piece

21

first slab edge formwork element part

22

second slab edge formwork element part

3

Slab edge formwork element corner piece

31

first slab edge formwork element part

32

second slab edge formwork element part

91

Wall

92

floor slab

93

Slab edge formwork element

l

length

b

Broad

H

Height

Claims (13)

1. Floor edge formwork element (1, 2, 3) which is designed to be used as permanent formwork during the production of an intermediate floor of a building and which is composed of a plurality of individual parts, wherein the plurality of individual parts comprise a first floor edge formwork element part (11, 21, 31) and a second floor edge formwork element part (12, 22, 32), wherein the second floor edge formwork element part (12, 22, 32) is designed to be connected to the first floor edge formwork element part (11, 21, 31) and, in the state in which it is connected as intended, to come to lie between the first floor edge formwork element part (11, 21, 31) and the intermediate floor which is to be produced, and wherein the floor edge formwork element parts are formed in such a way that they can be brought into connection with one another by plugging the second floor edge formwork element part (12, 22, 32) onto the first floor edge formwork element part (11, 21, 31) from above, characterized in that that side (112) of the first floor edge formwork element part (11, 21, 31) that faces the second floor edge formwork element part (12, 22, 32) drops down in at least one step from a narrower upper side of the first floor edge formwork element part (11, 21, 31) to a broader underside thereof and has vertical elevations and depressions, and in that that side (124) of the second floor edge formwork element part (12, 22, 32) that faces the first floor edge formwork element part (11, 21, 31) is formed in a complementary manner thereto.
2. Floor edge formwork element (1, 2, 3) according to Claim 1, characterized in that the floor edge formwork element comprises one or more third floor edge formwork element parts, wherein these third floor edge formwork element parts are arranged in cavities which are present between the first floor edge formwork element part (11, 21, 31) and the second floor edge formwork element part (12, 22, 32), and in that the third floor edge formwork element parts are more easily compressible than the first floor edge formwork element part (11, 21, 31) and the second floor edge formwork element part (12, 22, 32).
3. Floor edge formwork element according to Claim 1 or 2, characterized in that the floor edge formwork element is a corner piece (2, 3) which is designed for use in a building corner and which has two legs which are angled with respect to one another and which meet in the building corner, and in that the lengths of the legs of the first floor edge formwork element part (21, 31) and the lengths of the legs of the second floor edge formwork element part (22, 32) are chosen in such a way that, in the state in which the floor edge formwork element parts are connected to one another as intended, the ends, which face away from the corner, of the legs of the first floor edge formwork element part (21, 31) come to lie at other points than the ends, which face away from the corner, of the legs of the second floor edge formwork element part (22, 32), that is to say that the first floor edge formwork element part (21, 31) and the second floor edge formwork element part (22, 32) only partially overlap one another.
4. Floor edge formwork element according to one of the preceding claims, characterized in that the second floor edge formwork element part (12, 22, 32) can be placed on the first floor edge formwork element part (11, 21, 31) in such a way that elevations (114, 116) provided on the first floor edge formwork element part (11, 21, 31) come to lie in assigned depressions (126, 128) of the second floor edge formwork element part (12, 22, 32) and/or elevations (125, 127) provided on the second floor edge formwork element part (12, 22, 32) come to lie in assigned depressions (113, 115) of the first floor edge formwork element part (11, 21, 31).
5. Floor edge formwork element according to Claim 4, characterized in that the elevations (114, 116, 125, 127) provided on the first floor edge formwork element part (11, 21, 31) and on the second floor edge formwork element part (12, 22, 32) only partially fill the depressions (113, 115, 126, 128) in which they come to lie.
6. Floor edge formwork element according to Claim 5, characterized in that the elevations (114, 116, 125, 127) provided on the first floor edge formwork element part (11, 21, 31) and on the second floor edge formwork element part (12, 22, 32) completely fill a region of the depressions (113, 115, 126, 128) in which they come to lie.
7. Floor edge formwork element according to one of the preceding claims, characterized in that the first floor edge formwork element part (11, 21, 31) and the second floor edge formwork element part (12, 22, 32) are not movable relative to one another in the state in which they are connected to one another as intended.
8. Floor edge formwork element according to one of the preceding claims, characterized in that there is provided a further floor edge formwork element part (19) which can be arranged on that side (121) of the second floor edge formwork element part (12, 22, 32) that faces away from the first floor edge formwork element part (11, 21, 31).
9. Floor edge formwork element according to Claim 8, characterized in that the further floor edge formwork element part (19) is designed to be plugged laterally onto the second floor edge formwork element part (12, 22, 32) and to be held thereon by a clamping action.
10. Floor edge formwork element according to Claim 8 or 9, characterized in that the further floor edge formwork element part (19) has one or more predetermined breaking points (193, 194) at which it can be broken off in order to match its height to the height of the second floor edge formwork element part (12, 22, 32).
11. Floor edge formwork element according to one of the preceding claims, characterized in that a cut-out (123) is provided on that side (121) of the second floor edge formwork element part (12, 22, 32) that faces away from the first floor edge formwork element part (11, 21, 31) and into which there can be inserted an anchor (18) using which the floor edge formwork element can be additionally fixed in its intended position.
12. Floor edge formwork element according to one of the preceding claims, characterized in that the first floor edge formwork element part (11, 21, 31) is produced from a harder material than the second floor edge formwork element part (12, 22, 32).
13. Floor edge formwork element according to Claim 2, characterized in that the third floor edge formwork element parts are fastened to the first floor edge formwork element part (11, 21, 31) or to the second floor edge formwork element part (12, 22, 32).

Images