EP3825486B1 - Formwork system for concrete construction - Google Patents

Description

Technical area

The present invention relates to a formwork system for concrete construction.

State of the art

Concrete structures such as floor / ceiling slabs are often concreted in several sections. Reasons for this are, for example, mixing new concrete or taking a break between pouring the individual sections. This creates construction joints that have to be sealed against moisture. The shuttering elements used for this purpose are usually made of steel and have larger dimensions, which leads to a high weight and corresponding difficulties when used on the construction site.

the DE 10 2007 051490 A1 describes a formwork system for concrete construction with at least one standard element and at least one angle element.

From the EP 0 513 740 B1 a permanent formwork consisting of formwork parts, which are made up of interconnected transverse and longitudinal bars and an intermediate metal panel, and a flat water stop made of sheet metal material firmly connected to the formwork parts is known.

From the DE 20 2008 003 246 U1 a lost formwork is known in which two formwork parts are firmly connected to one another with the aid of a connecting device, leaving a gap free. The gap between the two formwork parts is intended to accommodate a flat water stop.

the DE 20 2009 005 173 U1 also describes a permanent formwork for concrete construction with two formwork parts and a sheet metal strip designed as a flat water barrier. The two formwork parts are aligned with one another lying in one plane, the sheet metal strip being arranged between the two formwork parts and perpendicular to the plane of the formwork parts. The sheet metal strip protrudes on both sides over the level of the formwork parts. The sheet metal strip has fastening elements on both of its surfaces for fastening the formwork parts, the formwork parts in the Fastening elements are non-positively clamped connected to the sheet metal strip.

Joints often do not run linearly over their entire extent, but rather show a kinking course that subsequently extends in a different direction. The shuttering of the area in which the joint has a non-linear course in the horizontal direction and the sealing of this area against water is currently done either by formwork parts that are custom-made specifically for the installation situation, or by formwork that requires a lot of work be assembled with the help of improvised formwork parts that are assembled on the construction site and fastened to one another. Both alternatives are associated with increased costs, which are caused in the first case by the increased effort in the production of the formwork parts and in the second case by the increased workload during installation on the construction site.

There is therefore a need for a shuttering system by means of which angled joints in floor / ceiling panels can be shuttered in a simple and inexpensive manner and equipped with a water seal.

Presentation of the invention

The invention, as it is characterized in the claims, is based on the object of providing a shuttering system through which angled joints in floor / ceiling panels can be shuttered easily and inexpensively and equipped with a water seal. This object is achieved according to the invention by the formwork system according to claim 1. Further advantageous details, aspects and configurations of the present invention emerge from the dependent claims, the description, the examples and the drawings.

The formwork system according to the invention for concrete construction comprises at least one standard element, at least one angle element and at least one fitting element.

The at least one standard element has a lower formwork part, an upper formwork part and a horizontal sheet metal strip designed as a flat water barrier, the lower formwork part and the upper formwork part being arranged in a common plane. The horizontal sheet metal strip is arranged between the formwork parts that it is essentially perpendicular to the Level of the formwork parts is aligned and a first surface of the horizontal sheet metal strip faces the upper formwork part and a second surface of the horizontal sheet metal strip faces the lower formwork part and the horizontal sheet metal strip protrudes on both sides over the level of the formwork parts. The upper formwork part is firmly connected to the first surface of the horizontal sheet metal strip and the lower formwork part is firmly connected to the second surface of the horizontal sheet metal material strip. The horizontal sheet metal strip protrudes over a vertically oriented edge of the upper formwork part, only the first surface of the horizontal sheet metal strip being freely accessible in the protruding area. The freely accessible area of the first surface of the horizontal sheet metal strip has an extension SA1 in the horizontal direction in the plane of the upper formwork part.

The at least one angle element has a first lower formwork part, a second lower formwork part, a first upper formwork part, a second upper formwork part and a horizontal sheet metal strip designed as a flat water barrier, the horizontal sheet metal strip having a first sheet metal strip section and a second sheet metal strip section. The first sheet metal strip section and the second sheet metal strip section enclose an angle δ _W12 with one another, where 180 °> δ _W12 > 30 ° applies. The first lower formwork part and the first upper formwork part are also arranged in a common plane, just as the second lower formwork part and the second upper formwork part are arranged in a common plane. The first lower formwork part and the second lower formwork part form an angle α _W12 with one another, where 180 °> α _W12 > 30 ° applies. The first upper formwork part and the second upper formwork part form an angle β _W12 with one another, where 180 °> β _W12 > 30 ° applies. The first sheet metal strip section is arranged between the first lower formwork part and the first upper formwork part that it is oriented essentially perpendicular to the plane of the first formwork parts and a first surface of the first sheet metal strip section faces the first upper formwork part and a second surface of the first Sheet metal strip section facing the first lower formwork part and the first sheet metal material strip section protrudes on both sides over the plane of the first formwork parts. The first upper formwork part is firmly connected to the first surface of the first sheet metal strip section and the first lower formwork part is firmly connected to the second surface of the first sheet metal material strip section. The second sheet metal strip section is arranged between the second lower formwork part and the second upper formwork part that it is aligned essentially perpendicular to the plane of the second formwork parts and a first surface of the second sheet metal material strip section faces the second upper formwork part and one second surface of the second sheet metal strip section facing the second lower formwork part and the second sheet metal material strip section protrudes on both sides over the plane of the second formwork parts. The second upper formwork part is firmly connected to the first surface of the second sheet metal strip section and the second lower formwork part is firmly connected to the second surface of the second sheet metal material strip section. The first sheet metal strip section protrudes over a vertically oriented edge of the first upper formwork part and only the first surface of the first sheet metal strip section is freely accessible in the protruding area. The freely accessible area of the first surface of the first sheet metal strip section extends in the horizontal direction in the plane of the first upper formwork part. The second sheet metal strip section protrudes over a vertically oriented edge of the second upper formwork part, only the first surface of the second sheet metal strip section being freely accessible in the protruding area. The freely accessible area of the first surface of the second sheet metal strip section has an extension WA2 in the horizontal direction in the plane of the second upper formwork part.

The at least one fitting element has a formwork part and a horizontal sheet-metal material strip designed as a flat water barrier, the horizontal sheet-metal material strip being oriented essentially perpendicular to the plane of the formwork part, with a first surface of the horizontal sheet-metal material strip facing the formwork part and a second surface of the horizontal sheet-metal material strip facing away from the formwork part and the horizontal sheet metal strip protrudes on both sides over the plane of the formwork part. The formwork part is firmly connected to the first surface of the horizontal sheet metal material strip, the horizontal sheet metal material strip and the formwork part having the same extent PA in the horizontal direction in the plane of the formwork part, the extent PA of the horizontal sheet metal material strip of the fitting element in the horizontal direction in the plane of the Formwork part of the sum of the extension SA1 of the freely accessible area of the first surface of the horizontal sheet metal strip of the standard element in the horizontal direction in the plane of the upper formwork part plus the extension WA1 of the freely accessible area of the first surface of the first sheet metal strip section of the angle element in the horizontal direction in the plane of the first corresponds to the upper part of the formwork.

The formwork system according to the invention for concrete construction thus comprises at least one standard element, at least one angle element and at least one fitting element. All three elements have a strip of sheet metal material which is designed as a water barrier and runs in the horizontal direction when installed. The sheet metal strip the standard element and the angle element are each freely accessible in a terminal edge area, that is, not connected to a formwork part. As will be described in more detail below, the standard element and the angle element are set up to form a shuttering such that the two freely accessible sections of the sheet metal material strips are arranged adjacent to one another in alignment with one another. Since the expansion of the horizontal sheet metal strip of the fitting element in the horizontal direction in the plane of the formwork part is the sum of the expansion of the freely accessible area of the first surface of the horizontal sheet metal strip of the standard element in the horizontal direction in the plane of the upper formwork part plus the expansion of the freely accessible area of the first surface of the first sheet metal strip section of the angle element corresponds in the horizontal direction in the plane of the first upper formwork part, the fitting element can be inserted between the standard element and the angle element. The formwork parts of the three elements are then arranged in a common plane and form a continuous, closed formwork.

The three formwork elements standard element, angle element and fitting element thus provide a modular system with the help of which a large variety of non-linear joints can be shut off. No assembly adapted to the respective installation situation is required. Since the elements are prefabricated in large numbers, there are significant cost savings compared to individually manufactured formwork.

It is known to the person skilled in the art that the shuttering parts of a shuttering element arranged on the two sides of a water barrier are usually arranged in a common plane. An offset of the shuttering parts arranged on different sides, for example of a metal seam, relative to one another does not bring any technical advantages, but the water stop would have to be dimensioned wider so that it protrudes over the shuttering parts on both sides by the required amount. If it is pointed out in the context of the present text in the general description and in the exemplary embodiments that any lower formwork part and any upper formwork part are arranged in a common plane, this is due to the technical requirements mentioned. An insignificant offset of the formwork parts of a formwork element relative to one another is of course covered by the present invention.

The flexibility of the formwork system according to the invention can be further increased if, according to a preferred embodiment, the angle element is designed as a T element or the three form elements standard element, angle element and A T-element is added to the fitting element. A T-element has a first lower formwork part, a second lower formwork part, a third lower formwork part, a first upper formwork part, a second upper formwork part, a third upper formwork part and a horizontal sheet metal strip designed as a flat water barrier. The horizontal sheet metal strip has a first sheet metal strip section, a second sheet metal strip section and a third sheet metal strip section, the first sheet metal strip section and the second sheet metal strip section enclosing an angle δ _T12 with one another, where 165 °> δ _T12 > 30 °. The first sheet metal strip section and the third sheet metal strip section enclose an angle δ _T13 with one another, where 300 °> δ _T13 > 30 ° applies, while the second sheet metal strip section and the third sheet metal strip section enclose an angle δ _T23 with one another, where 165 °> δ _T23 > 30 ° is applicable. Since the three sheet metal strip sections complement each other in a common plane to form the sheet metal strip of the T-element designed as a flat water barrier, the condition δ _T12 + δ _T13 + δ _T23 = 360 ° always applies.

The first lower shuttering part and the first upper shuttering part of the T-element are arranged in a common plane, the second lower shuttering part and the second upper shuttering part are arranged in a common plane, and the third lower shuttering part and the third upper shuttering part are in a common plane arranged. The first lower shuttering part and the second lower shuttering part of the T-element enclose an angle α _T12 with one another, where 165 °> α _T12 > 30 ° applies; the first upper formwork part and the second upper formwork part form an angle β _T12 with one another, where 165 °> β _T12 > 30 ° applies. The first lower shuttering part and the third lower shuttering part of the T-element enclose an angle α _T13 with one another, with 300 °> α _T13 > 30 °; the first upper formwork part and the third upper formwork part form an angle β _T13 with one another, with 300 °> β _T13 > 30 °. Finally, the second lower formwork part and the third lower formwork part of the T-element enclose an angle α _T12 with one another, where 165 °> α _T23 > 30 ° applies; the second upper formwork part and the third upper formwork part form an angle β _T23 with one another, where 165 °> β _T23 > 30 ° applies. Since the various formwork parts are arranged on the sheet metal strip sections described above, the angles between the various formwork parts also add up to 360 °. The following applies: α _T12 + α _T13 + α _T23 = 360 ° and β _T12 + β _T13 + β _T23 = 360 °.

The first sheet metal strip section of the T-element is arranged between the first lower shuttering part and the first upper shuttering part that it is aligned essentially perpendicular to the plane of the first shuttering parts and a first surface of the first sheet metal strip section faces the first upper shuttering part and one second surface of the first Sheet metal strip section faces the first lower shuttering part and the first sheet metal strip section protrudes on both sides over the plane of the first shuttering parts, wherein the first upper shuttering part is firmly connected to the first surface of the first sheet metal strip section and the first lower shuttering part is firmly connected to the second surface of the first sheet metal strip section .

The second sheet metal strip section of the T-element is arranged between the second lower formwork part and the second upper formwork part that it is oriented essentially perpendicular to the plane of the second formwork parts, with a first surface of the second sheet metal strip section facing the second upper formwork part and one The second surface of the second sheet metal strip section faces the second lower shuttering part and the second sheet metal strip section protrudes on both sides over the plane of the second shuttering parts, the second upper shuttering part being firmly connected to the first surface of the second sheet metal strip section and the second lower shuttering part firmly connected to the second surface of the second sheet metal strip section is connected.

The third sheet material strip section of the T-element is arranged between the third lower formwork part and the third upper formwork part that it is aligned essentially perpendicular to the plane of the third formwork parts, with a first surface of the third sheet material strip section facing the third upper formwork part and a The second surface of the third sheet metal strip section faces the third lower shuttering part and the third sheet metal strip section protrudes on both sides over the plane of the third shuttering parts, the third upper shuttering part being firmly connected to the first surface of the third sheet metal strip section and the third lower shuttering part firmly connected to the second surface of the third sheet material strip section is connected.

The first sheet metal strip section of the T-element protrudes over a vertically oriented edge of the first upper formwork part, only the first surface of the first sheet metal strip section being freely accessible in the protruding area. The freely accessible area of the first surface of the first sheet metal strip section has an extension TA1 in the horizontal direction in the plane of the first upper formwork part. The second sheet metal strip section of the T-element protrudes over a vertically oriented edge of the second upper formwork part, only the first surface of the second sheet metal strip section being freely accessible in the protruding area. The freely accessible area of the first surface of the second sheet metal strip section points in the horizontal direction in the plane of the second upper part of the formwork to an extent TA2. The third sheet metal strip section of the T-element protrudes over a vertically oriented edge of the third upper formwork part, only the first surface of the third sheet metal strip section being freely accessible in the protruding area. The freely accessible area of the first surface of the third sheet metal strip section has an extension TA3 in the horizontal direction in the plane of the third upper formwork part.

The extension PA of the horizontal sheet metal strip of the fitting element in the horizontal direction in the plane of the formwork part corresponds to the sum of the extension SA1 of the freely accessible area of the first surface of the horizontal sheet metal strip of the standard element in the horizontal direction in the plane of the upper formwork part plus the extension TA1 of the freely accessible area the first surface of the first sheet metal strip section of the T-element in the horizontal direction in the plane of the first upper formwork part and / or the extension PA of the horizontal sheet metal material strip of the fitting element in the horizontal direction in the plane of the formwork part corresponds to the sum of the extension of the freely accessible area of the first Surface of the horizontal sheet metal strip of the standard element in the horizontal direction in the plane of the upper formwork part plus extension TA2 of the freely accessible area of the second surface of the second sheet metal material strip section of the T-element in the horizontal direction in the plane of the second upper formwork part and / or the extent PA of the horizontal sheet metal strip of the fitting element in the horizontal direction in the plane of the formwork part corresponds to the sum of the extent SA2 of the freely accessible area of the first surface of the horizontal sheet metal material strip of the standard element in the horizontal direction in the plane of the upper formwork part plus extension TA3 of the freely accessible area of the third surface of the third sheet metal strip section of the T-element in the horizontal direction in the plane of the third upper formwork part.

The flexibility of the modular system can be further increased with a T-element. In this way, joints can be switched off in a simple manner, in which joint sections abut one another from at least two different directions. In the simplest case, a T-element, three fitting elements and three standard elements can be used to shut off a joint in which a linear joint section meets a joint section that is perpendicular to this joint section. Of course, any type of joint can be shut off in which three joint sections meet at any angle.

The flexibility of the formwork system according to the invention can be further increased if, according to a preferred embodiment, the angle element is designed as a cross element or a cross element is added to the formwork elements standard element, angle element, fitting element and optionally T-element. The cross element has a first lower formwork part, a second lower formwork part, a third lower formwork part, a fourth lower formwork part, a first upper formwork part, a second upper formwork part, a third upper formwork part, a fourth upper formwork part and a horizontal water barrier designed as a flat water barrier Sheet metal material strips, the horizontal sheet metal material strip having a first sheet metal material strip section, a second sheet metal material strip section, a third sheet metal material strip section and a fourth sheet metal material strip section.

The first sheet metal strip section and the second sheet metal strip section of the cross element enclose an angle δ _K12 with one another, where 110 °> δ _K12 > 30 ° applies; the second sheet metal strip section and the third sheet metal strip section enclose an angle δ _K23 with one another, where 110 °> δ _K23 > 30 ° applies; the third sheet metal strip section and the fourth sheet metal strip section enclose an angle δ _K34 with one another, with 110 °> δ _K34 > 30 °; the fourth sheet metal strip section and the first sheet metal strip section enclose an angle δ _K41 with one another, where 270 °> δ _K41 > 30 ° applies. Since the four sheet metal strip sections complement each other in a common plane to form the sheet metal strip of the cross element designed as a flat water barrier, the condition δ _K12 + δ _K23 + δ _K34 + δ _K41 = 360 ° always applies.

The first lower formwork part and the first upper formwork part of the cross element are arranged in a common plane, the second lower formwork part and the second upper formwork part are arranged in a common plane, the third lower formwork part and the third upper formwork part are arranged in a common plane, and finally the fourth lower formwork part and the fourth upper formwork part are arranged in a common plane.

The first lower formwork part and the second lower formwork part of the cross element enclose an angle α _K12 with one another, with 110 °> α _K12 > 30 °; the first upper formwork part and the second upper formwork part form an angle β _K12 with one another, where 110 °> β _K12 > 30 ° applies; the second lower formwork part and the third lower formwork part form an angle α _K23 with one another, where 110 °> α _K23 > 30 ° applies; the second upper formwork part and the third upper formwork part form an angle β _K23 with one another, where 110 °> β _K23 > 30 ° applies; the third lower formwork part and the fourth lower formwork part form an angle α _K34 with one another a, where 110 °> α _K34 > 30 ° applies; the third upper formwork part and the fourth upper formwork part form an angle β _K34 with one another, with 110 °> β _K34 > 30 °; the fourth lower formwork part and the first lower formwork part form an angle α _K41 with one another, where 270 °> α _K41 > 30 ° applies; the fourth upper formwork part and the first upper formwork part form an angle β _K41 with one another, where 270 °> β _K41 > 30 ° applies. Since the various formwork parts are arranged on the sheet metal strip sections described above, the angles between the various formwork parts also add up to 360 °. The following applies: α _K12 + α _K23 + α _K34 + α _K41 = 360 ° and β _K12 + β _K23 + β _K34 + β _K41 = 360 °.

The first sheet metal strip section of the cross element is arranged between the first lower formwork part and the first upper formwork part that it is aligned essentially perpendicular to the plane of the first formwork parts, with a first surface of the first sheet metal strip section facing the first upper formwork part and a second surface of the first sheet metal strip section faces the first lower formwork part and the first sheet metal material strip section protrudes on both sides over the plane of the first formwork parts, wherein the first upper formwork part is firmly connected to the first surface of the first sheet metal material strip section and the first lower formwork part is firmly connected to the second surface of the first sheet metal material strip section connected is.

The second sheet metal strip section of the cross element is arranged between the second lower formwork part and the second upper formwork part that it is aligned essentially perpendicular to the plane of the second formwork parts, with a first surface of the second sheet metal strip section facing the second upper formwork part and a second surface of the second sheet metal strip section faces the second lower formwork part and the second sheet metal strip section protrudes on both sides over the plane of the second formwork parts, the second upper formwork part being firmly connected to the first surface of the second sheet metal material strip section and the second lower formwork part firmly connected to the second surface of the second sheet metal material strip section connected is.

The third sheet metal strip section of the cross element is arranged between the third lower formwork part and the third upper formwork part that it is oriented essentially perpendicular to the plane of the third formwork parts, with a first surface of the third sheet metal strip section facing the third upper formwork part and a second surface of the third sheet metal strip section facing the third lower formwork part and the third sheet metal material strip section on both sides over the plane of the third formwork parts protrudes, wherein the third upper formwork part is firmly connected to the first surface of the third sheet material strip section and the third lower formwork part is firmly connected to the second surface of the third sheet metal material strip section.

The fourth sheet metal strip section of the cross element is arranged between the fourth lower formwork part and the fourth upper formwork part that it is aligned essentially perpendicular to the plane of the fourth formwork parts, with a first surface of the third sheet metal strip section facing the fourth upper formwork part and a second surface of the fourth sheet metal strip section faces the fourth lower formwork part and the fourth sheet metal strip section protrudes on both sides over the plane of the fourth formwork parts, the fourth upper formwork part being firmly connected to the first surface of the fourth sheet metal material strip section and the fourth lower formwork part firmly connected to the second surface of the fourth sheet metal material strip section connected is.

The first sheet metal strip section of the cross element protrudes over a vertically oriented edge of the first upper formwork part, only the first surface of the first sheet metal strip section being freely accessible in the protruding area. The freely accessible area of the first surface of the first sheet metal strip section has an extension KA1 in the horizontal direction in the plane of the first upper formwork part.

The second sheet metal strip section of the cross element protrudes over a vertically oriented edge of the second upper formwork part, only the first surface of the second sheet metal strip section being freely accessible in the protruding area. The freely accessible area of the first surface of the second sheet metal strip section has an extension KA2 in the horizontal direction in the plane of the second upper formwork part.

The third sheet metal strip section of the cross element protrudes over a vertically oriented edge of the third upper formwork part, only the first surface of the third sheet metal strip section being freely accessible in the protruding area. The freely accessible area of the first surface of the third sheet metal strip section extends in the horizontal direction in the plane of the third upper formwork part.

The fourth sheet metal strip section of the cross element protrudes over a vertically oriented edge of the fourth upper formwork part, only the first surface of the fourth sheet metal strip section being freely accessible in the protruding area. The freely accessible area of the first surface of the fourth Sheet metal strip section has an extension KA4 in the horizontal direction in the plane of the fourth upper formwork part.

The extension PA of the horizontal sheet metal strip of the fitting element in the horizontal direction in the plane of the formwork part corresponds to the sum of the extension SA1 of the freely accessible area of the first surface of the horizontal sheet metal strip of the standard element in the horizontal direction in the plane of the upper formwork part plus the extension KA1 of the freely accessible area the first surface of the first sheet metal strip section of the cross element in the horizontal direction in the plane of the first upper formwork part and / or the extension PA of the horizontal sheet metal material strip of the fitting element in the horizontal direction in the plane of the formwork part corresponds to the sum of the extension SA1 of the freely accessible area of the first surface of the horizontal sheet metal strip of the standard element in the horizontal direction in the plane of the upper formwork part plus extension KA2 of the freely accessible area of the second surface of the second Sheet metal strip section of the cross element in the horizontal direction in the plane of the second upper formwork part and / or the extension PA of the horizontal sheet metal material strip of the fitting element in the horizontal direction in the plane of the formwork part corresponds to the sum of the extension SA1 of the freely accessible area of the first surface of the horizontal sheet metal material strip of the standard element in the horizontal direction in the plane of the upper formwork part plus extension KA3 of the freely accessible area of the third surface of the third sheet metal strip section of the cross element in the horizontal direction in the plane of the third upper formwork part and / or the extension PA of the horizontal sheet metal material strip of the fitting element in the horizontal direction The level of the formwork part corresponds to the sum of the extent SA1 of the freely accessible area of the first surface of the horizontal sheet metal strip of the standard element in the horizontal Direction in the plane of the upper formwork part plus extension KA4 of the freely accessible area of the fourth surface of the fourth sheet metal strip section of the cross element in the horizontal direction in the plane of the fourth upper formwork part.

The flexibility of the modular system can be further increased with a cross element. In this way, joints can be switched off in a simple manner, in which joint sections abut one another from at least two different directions. In the simplest case, a cross element, four fitting elements and four standard elements can be used to shut off a joint in which two linear joint sections intersect. Of course, any type of joint can be shut off in which four joint sections meet at any angle.

The various formwork parts are preferably welded to the respective strip of sheet metal. Since the shuttering formed from the shuttering system must have sufficient stability to be able to be set up on the construction site without any problems and to be able to withstand the concrete pressure after the in-situ concrete has been poured into the shuttering, shuttering parts and strips of sheet metal must be firmly and permanently connected to one another . Welding the individual parts is particularly suitable for ensuring a stable connection.

It is particularly expedient if the two formwork parts of the standard element, the four formwork parts of the angle element, the formwork part of the fitting element, the six formwork parts of the T-element and / or the eight formwork parts of the cross element each have a crossbar and a longitudinal bar and one between the transverse and longitudinal bars of the mesh mat include welded perforated metal sheet. The perforated metal sheet is particularly preferably an expanded metal sheet or a perforated sheet.

The cross bars of the metal grid are preferably welded to the longitudinal bars of the metal grid at their crossing points. The transverse and longitudinal bars of the metal grid are also welded to the perforated metal sheet. The openings are advantageously chosen large enough on the one hand to ensure a durable and permanent connection of the concrete of the two adjacent concreting sections through the concrete slurry passing through, but on the other hand not so large that the concrete of the first concreting section can flow through the openings.

Depending on the type of use of the formwork elements, the thickness of the transverse and longitudinal bars of the metal grid and the distance between the transverse and longitudinal bars can be optimized. The higher the concrete pressure to be expected on the formwork element, the thicker the individual rods have to be dimensioned or the smaller the spacing between the transverse and longitudinal bars of the metal grid.

According to a particularly preferred embodiment of the present invention, the sheet material strip of the standard element, the sheet material strip of the angle element, the sheet material strip of the fitting element, the sheet material strip of the T-element and / or the sheet material strip of the cross element is at least partially on its first and / or second surface, preferably over the entire surface, provided with a sealing coating. A particularly good seal against water is achieved by a coating and in particular by a full-surface coating. Another advantage is associated in particular with the coating of the freely accessible sections of the sheet metal material strips. As already described, the Forming a shuttering a standard element and an angle element, but optionally also a T-element or a cross element, set up in such a way that the two freely accessible sections of the sheet-metal material strips are aligned adjacent to one another. Since the extension PA of the horizontal sheet metal strip of the fitting element in the horizontal direction in the plane of the formwork part is the sum of the extension SA1 of the freely accessible area of the first surface of the horizontal sheet metal strip of the standard element in the horizontal direction in the plane of the upper formwork part plus the extension WA1 of the freely accessible area corresponds to the first surface of the first sheet metal strip section of the angle element, or also of the T-element or the cross element, in the horizontal direction in the plane of the first upper formwork part, the fitting element can be inserted between the standard element and the angle element. The surface of the sheet metal strip of the fitting element facing away from the formwork part of the fitting element comes into contact with the first surface of the horizontal sheet metal material strip of the standard element in its freely accessible area and with the first surface of the first sheet metal strip section of the angle element in its freely accessible area. If the surfaces mentioned are now all equipped with a sealing coating, in particular with a sealing coating applied over the entire surface, which always has a certain stickiness, then the fitting element is fixed to the standard element and fixed to the angle element, optionally the T-element, after the corresponding surfaces have been brought into contact or the cross element, connected, namely firmly glued together. This gives the entire formwork system additional stability when it is being set up. The formwork parts of the three elements are then arranged in a common plane and form a continuous, closed formwork.

The sealing coating can in principle be applied to the sheet metal strip in any manner known to the person skilled in the art. The sealing coating preferably has an adhesive layer for attachment to the respective strip of sheet metal. Before it is applied to the sheet metal strip, the adhesive layer of the coating is usually covered with a paper strip. For attachment, the paper strip can then simply be peeled off the coating and the adhesive layer can be pressed onto the sheet metal strip. A durable connection between the coating and the sheet metal strip is created in a simple manner.

The coatings described in more detail below are usually materials that can be melted at higher temperatures without decomposition. A further preferred type of application of the coating to the sheet metal strip can therefore be spraying the liquid coating material can be used on the sheet metal strips. The coating material is sprayed onto the sheet metal strip with the aid of a spray nozzle, where it cools down and results in a solid sealing coating.

Regardless of the type of application of the coating to the sheet metal strip, the coating is provided with a protective coating until it is used as part of a water barrier. The materials used as the sealing coating give the coating in any case a sticky surface that bonds well with the poured concrete in a known manner. To protect these sticky surfaces, a layer of paper or a plastic film is usually used, which is then peeled off the coating before the concrete is poured.

As is customary and known to those skilled in the art, when the formwork system according to the invention is used in concrete parts exposed to water, the sealing coating ensures that the joint is sealed against water. For this purpose, it is particularly advantageous if the surfaces of the coatings bond well with the concrete on both sides of the joint. According to a particularly preferred embodiment of the present invention, the coating therefore has a sticky surface that bonds permanently to the adjacent concrete. If the expected shrinkage of the concrete occurs during hardening, the sealing coating is pulled along by the concrete on both sides of the formwork, with the thickness of the coating increasing. In this way, the sealing coating ensures that the joint is reliably sealed against water.

In principle, any type of coating which has the properties mentioned can be used as a sealing coating in the context of the present invention. Coatings that essentially consist of butyl rubber, bentonite, bitumen rubber, a hot melt adhesive or a swellable plastic are particularly suitable. "Swellable plastic" is understood to mean all conventional thermoplastic elastomers equipped with a swellable material. Swellable plastics can be obtained on the market in film form or in the form of tapes.

Butyl rubber is polyisobutylene that has been modified with resins and fillers (e.g. calcium carbonate). Bitumen rubber is a product made from petroleum, the exact composition of which varies. Bentonite is a swellable mixture of different clay minerals. The main component is montmorillonite (60 - 80%), accompanying minerals are quartz, mica, feldspar, pyrite or calcite.

The thickness of the coating is chosen so that, on the one hand, the coating adheres to the hardening concrete even if the concrete shrinks, but on the other hand, no superfluous coating material is applied to the lost formwork. The sealing coating preferably has a thickness between 0.1 mm and 5 mm, particularly preferably between 0.15 mm and 3 mm, in particular a thickness between 0.2 mm and 2 mm and particularly preferably a thickness between 0.5 mm and 1, 5 mm. A thickness of the sealing coating of around 1 mm has proven to be particularly advantageous.

The coating materials mentioned in the coating thicknesses mentioned can increase their volume by at least 50% and up to 100% under tensile loading. This ensures a good seal of the joint even if the concrete shrinks.

• Ein Schalungssystem, bei dem der erste Blechmaterialstreifenabschnitt und der zweite Blechmaterialstreifenabschnitt des Winkelelements einen Winkel δ_W12 miteinander einschließen, wobei 150° > δ_W12 > 45° gilt, bevorzugt 120° > δ_W12 > 60° gilt, besonders bevorzugt 100° > δ_W12 > 80° gilt und insbesondere δ_W12 = 90° ist.
• Ein Schalungssystem, bei dem das erste untere Schalungsteil und das zweite untere Schalungsteil des Winkelelements einen Winkel α_W12 miteinander einschließen, wobei 150° > α_W12 > 45° gilt, bevorzugt 120° > α_W12 > 60° gilt, besonders bevorzugt 100° > α_W12 > 80° gilt und insbesondere α_W12 = 90° ist.
• Ein Schalungssystem, bei dem das erste obere Schalungsteil und das zweite obere Schalungsteil des Winkelelements einen Winkel β_W12 miteinander einschließen, wobei 150° > β_W12 > 45° gilt, bevorzugt 120° > β_W12 > 60° gilt, besonders bevorzugt 100° > β_W12 > 80° gilt und insbesondere β_W12 = 90° ist.
• Ein Schalungssystem, bei dem δ_W12 = α_W12 = β_W12 gilt.
• Ein Schalungssystem, bei dem der erste Blechmaterialstreifenabschnitt und der zweite Blechmaterialstreifenabschnitt des T-Elements einen Winkel δ_T12 miteinander einschließen, wobei 120° > δ_T12 > 60° gilt, bevorzugt 110° > δ_T12 > 70° gilt, besonders bevorzugt 100° > δ_T12 > 80° gilt und insbesondere δ_T12 = 90° ist.
• Ein Schalungssystem, bei dem der erste Blechmaterialstreifenabschnitt und der dritte Blechmaterialstreifenabschnitt des T-Elements einen Winkel δ_T13 miteinander einschließen, wobei 240° > δ_T13 > 120° gilt, bevorzugt 220° > δ_T13 > 140° gilt, besonders bevorzugt 200° > δ_T13 > 160° gilt und insbesondere δ_T13 = 180° ist.
• Ein Schalungssystem, bei dem der zweite Blechmaterialstreifenabschnitt und der dritte Blechmaterialstreifenabschnitt des T-Elements einen Winkel δ_T23 miteinander einschließen, wobei 120° > δ_T23 > 60° gilt, bevorzugt 110° > δ_T23 > 70° gilt, besonders bevorzugt 100° > δ_T23 > 80° gilt und insbesondere δ_T23 = 90° ist.
• Ein Schalungssystem, bei dem das erste untere Schalungsteil und das zweite untere Schalungsteil des T-Elements einen Winkel α_T12 miteinander einschließen, wobei 120° > α_T12 > 60° gilt, bevorzugt 110° > α_T12 > 70° gilt, besonders bevorzugt 100° > α_T12 > 80° gilt und insbesondere α_T12 = 90° ist.
• Ein Schalungssystem, bei dem das erste obere Schalungsteil und das zweite obere Schalungsteil des T-Elements einen Winkel β_T12 miteinander einschließen, wobei 120° > β_T12 > 60° gilt, bevorzugt 110° > β_T12 > 70° gilt, besonders bevorzugt 100° > β_T12 > 80° gilt und insbesondere β_T12 = 90° ist.
• Ein Schalungssystem, bei dem das erste untere Schalungsteil und das dritte untere Schalungsteil des T-Elements einen Winkel α_T13 miteinander einschließen, wobei 240° > α_T13 > 120° gilt, bevorzugt 220° > α_T13 > 140° gilt, besonders bevorzugt 200° > α_T13 > 160° gilt und insbesondere α_T13 = 180° ist.
• Ein Schalungssystem, bei dem das erste obere Schalungsteil und das dritte obere Schalungsteil des T-Elements einen Winkel β_T13 miteinander einschließen, wobei 240° > β_T13 > 120° gilt, bevorzugt 220° > β_T13 > 140° gilt, besonders bevorzugt 200° > β_T13 > 160° gilt und insbesondere β_T13 = 180° ist.
• Ein Schalungssystem, bei dem das zweite untere Schalungsteil und das dritte untere Schalungsteil des T-Elements einen Winkel α_T23 miteinander einschließen, wobei 120° > α_T23 > 60° gilt, bevorzugt 110° > α_T23 > 70° gilt, besonders bevorzugt 100° > α_T23 > 80° gilt und insbesondere α_T23 = 90° ist.
• Ein Schalungssystem, bei dem das zweite obere Schalungsteil und das dritte obere Schalungsteil des T-Elements einen Winkel β_T23 miteinander einschließen, wobei 120° > β_T23 > 60° gilt, bevorzugt 110° > β_T23 > 70° gilt, besonders bevorzugt 100° > β_T23 > 80° gilt und insbesondere β_T23 = 90° ist.
• Ein Schalungssystem, bei dem δ_T12 = α_T12 = β_T12 gilt.
• Ein Schalungssystem, bei dem δ_T13 = α_T13 = β_T13 gilt.
• Ein Schalungssystem, bei dem δ_T23 = α_T23 = β_T23 gilt.
• Ein Schalungssystem, bei dem δ_K12 = α_K12 = β_K12 gilt.
• Ein Schalungssystem, bei dem δ_K23 = α_K23 = β_K23 gilt.
• Ein Schalungssystem, bei dem δ_K34 = α_K34 = ß_K34 gilt.
• Ein Schalungssystem, bei dem δ_K41 = α_K41 = β_K41 gilt.

As already stated, an extremely large number of combinations of angles between two sheet metal strips or between two formwork parts can be implemented in the individual elements of the formwork system according to the invention. It is clear to the person skilled in the art that not every conceivable combination of angles will be realized when shuttering joints in floor slabs, since the course of the joints is not arbitrary. In the following, therefore, preferred embodiments are specified in which the areas in which the angles enclosed by two strips of sheet metal material or the angles enclosed by two formwork parts are specified in more detail. The preferred areas reflect the joint courses that are increasingly common in practice. All of the embodiments mentioned below represent preferred embodiments per se, but can also be combined with one another in any desired manner. All of the embodiments listed below are therefore linked with and / or. Preferred embodiments relate to:

• A formwork system in which the first sheet metal strip section and the second sheet metal strip section of the angle element enclose an angle δ _W12 with one another, where 150 °> δ _W12 > 45 °, preferably 120 °> δ _W12 > 60 °, particularly preferably 100 °> δ _W12 > 80 ° applies and in particular δ _W12 = 90 °.
• A formwork system in which the first lower formwork part and the second lower formwork part of the angle element enclose an angle α _W12 with one another, where 150 °> α _W12 > 45 °, preferably 120 °> α _W12 > 60 °, particularly preferably 100 °> α _W12 > 80 ° applies and in particular α _W12 = 90 °.
• A formwork system in which the first upper formwork part and the second upper formwork part of the angle element enclose an angle β _W12 with one another, where 150 °> β _W12 > 45 °, preferably 120 °> β _W12 > 60 °, particularly preferably 100 °> β _W12 > 80 ° applies and in particular β _W12 = 90 °.
• A formwork system in which δ _W12 = α _W12 = β _W12 applies.
• A formwork system in which the first sheet metal strip section and the second sheet metal strip section of the T-element enclose an angle δ _T12 with one another, where 120 °> δ _T12 > 60 °, preferably 110 °> δ _T12 > 70 °, particularly preferably 100 °> δ _T12 > 80 ° applies and in particular δ _T12 = 90 °.
• A formwork system in which the first sheet metal strip section and the third sheet metal strip section of the T-element enclose an angle δ _T13 with one another, where 240 °> δ _T13 > 120 °, preferably 220 °> δ _T13 > 140 °, particularly preferably 200 °> δ _T13 > 160 ° applies and in particular δ _T13 = 180 °.
• A formwork system in which the second sheet metal strip section and the third sheet metal strip section of the T-element enclose an angle δ _T23 with one another, where 120 °> δ _T23 > 60 °, preferably 110 °> δ _T23 > 70 °, particularly preferably 100 °> δ _T23 > 80 ° applies and in particular δ _T23 = 90 °.
• A formwork system in which the first lower formwork part and the second lower formwork part of the T-element enclose an angle α _T12 with one another, where 120 °> α _T12 > 60 °, preferably 110 °> α _T12 > 70 °, particularly preferably 100 °> α _T12 > 80 ° applies and in particular α _T12 = 90 °.
• A formwork system in which the first upper formwork part and the second upper formwork part of the T-element enclose an angle β _T12 with one another, where 120 °> β _T12 > 60 °, preferably 110 °> β _T12 > 70 °, particularly preferably 100 °> β _T12 > 80 ° applies and, in particular, β _T12 = 90 °.
• A formwork system in which the first lower formwork part and the third lower formwork part of the T-element enclose an angle α _T13 with one another, where 240 °> α _T13 > 120 °, preferably 220 °> α _T13 > 140 °, particularly preferably 200 °> α _T13 > 160 ° applies and in particular α _T13 = 180 °.
• A formwork system in which the first upper formwork part and the third upper formwork part of the T-element enclose an angle β _T13 with one another, 240 ° > β _T13 > 120 ° applies, preferably 220 °> β _T13 > 140 ° applies, particularly preferably 200 °> β _T13 > 160 ° applies and in particular β _T13 = 180 °.
• A formwork system in which the second lower formwork part and the third lower formwork part of the T-element enclose an angle α _T23 with one another, where 120 °> α _T23 > 60 °, preferably 110 °> α _T23 > 70 °, particularly preferably 100 °> α _T23 > 80 ° applies and in particular α _T23 = 90 °.
• A formwork system in which the second upper formwork part and the third upper formwork part of the T-element enclose an angle β _T23 with one another, where 120 °> β _T23 > 60 °, preferably 110 °> β _T23 > 70 °, particularly preferably 100 °> β _T23 > 80 ° applies and in particular β _T23 = 90 °.
• A formwork system in which δ _T12 = α _T12 = β _T12 applies.
• A formwork system in which δ _T13 = α _T13 = β _T13 applies.
• A formwork system in which δ _T23 = α _T23 = β _T23 applies.
• A formwork system in which δ _K12 = α _K12 = β _K12 applies.
• A formwork system in which δ _K23 = α _K23 = β _K23 applies.
• A formwork system in which δ _K34 = α _K34 = ß _K34 applies.
• A formwork system in which δ _K41 = α _K41 = β _K41 applies.

According to a particularly preferred embodiment of the present invention, the extent of the horizontal sheet metal strip of the fitting element in the horizontal direction in the plane of the formwork part corresponds to the sum of the extent of the freely accessible area of the first surface of the horizontal sheet metal material strip of the standard element in the horizontal direction in the plane of the upper formwork part plus Extension of the freely accessible area of the second surface of the second sheet metal strip section of the angle element in the horizontal direction in the plane of the second upper formwork part. In this case, the same type of fitting element can be used for the extension of the formwork in both directions given by the angle element.

• es entspricht die Ausdehnung PA des horizontalen Blechmaterialstreifens des Passelements in horizontaler Richtung in der Ebene des Schalungsteils der Summe aus Ausdehnung SA1 des frei zugänglichen Bereichs der ersten Oberfläche des horizontalen Blechmaterialstreifens des Standardelements in horizontaler Richtung in der Ebene des oberen Schalungsteils plus Ausdehnung TA2 des frei zugänglichen Bereichs der zweiten Oberfläche des zweiten Blechmaterialstreifenabschnitts des T-Elements in horizontaler Richtung in der Ebene des zweiten oberen Schalungsteils
  und/oder
• es entspricht die Ausdehnung PA des horizontalen Blechmaterialstreifens des Passelements in horizontaler Richtung in der Ebene des Schalungsteils der Summe aus Ausdehnung SA1 des frei zugänglichen Bereichs der ersten Oberfläche des horizontalen Blechmaterialstreifens des Standardelements in horizontaler Richtung in der Ebene des oberen Schalungsteils plus Ausdehnung TA3 des frei zugänglichen Bereichs der dritten Oberfläche des dritten Blechmaterialstreifenabschnitts des T-Elements in horizontaler Richtung in der Ebene des dritten oberen Schalungsteils.

According to further preferred embodiments, the extension PA of the horizontal sheet metal strip of the fitting element in the horizontal direction corresponds to Plane of the formwork part of the sum of the extension SA1 of the freely accessible area of the first surface of the horizontal sheet metal strip of the standard element in the horizontal direction in the plane of the upper formwork part plus extension TA1 of the freely accessible area of the first surface of the first sheet metal strip section of the T-element in the horizontal direction the level of the first upper formwork part
and or

• the extension PA of the horizontal sheet metal strip of the fitting element in the horizontal direction in the plane of the formwork part corresponds to the sum of the extension SA1 of the freely accessible area of the first surface of the horizontal sheet metal strip of the standard element in the horizontal direction in the plane of the upper formwork part plus the extension TA2 of the freely accessible area Area of the second surface of the second sheet metal strip section of the T-element in the horizontal direction in the plane of the second upper formwork part
  and or
• the extension PA of the horizontal sheet metal strip of the fitting element in the horizontal direction in the plane of the formwork part corresponds to the sum of the extension SA1 of the freely accessible area of the first surface of the horizontal sheet metal material strip of the standard element in the horizontal direction in the plane of the upper formwork part plus the extension TA3 of the freely accessible area Area of the third surface of the third sheet metal strip section of the T-element in the horizontal direction in the plane of the third upper formwork part.

If the dimensions of all three freely accessible areas of the T-element correspond to the dimensions of the fitting element, the identical fitting element can be used to extend the formwork in all three directions given by the T-element.

• es entspricht die Ausdehnung PA des horizontalen Blechmaterialstreifens des Passelements in horizontaler Richtung in der Ebene des Schalungsteils der Summe aus Ausdehnung SA1 des frei zugänglichen Bereichs der ersten Oberfläche des horizontalen Blechmaterialstreifens des Standardelements in horizontaler Richtung in der Ebene des oberen Schalungsteils plus Ausdehnung KA2 des frei zugänglichen Bereichs der zweiten Oberfläche des zweiten Blechmaterialstreifenabschnitts des Kreuzelements in horizontaler Richtung in der Ebene des zweiten oberen Schalungsteils
  und/oder
• es entspricht die Ausdehnung PA des horizontalen Blechmaterialstreifens des Passelements in horizontaler Richtung in der Ebene des Schalungsteils der Summe aus Ausdehnung SA1 des frei zugänglichen Bereichs der ersten Oberfläche des horizontalen Blechmaterialstreifens des Standardelements in horizontaler Richtung in der Ebene des oberen Schalungsteils plus Ausdehnung KA3 des frei zugänglichen Bereichs der dritten Oberfläche des dritten Blechmaterialstreifenabschnitts des Kreuzelements in horizontaler Richtung in der Ebene des dritten oberen Schalungsteils
  und/oder
• es entspricht die Ausdehnung PA des horizontalen Blechmaterialstreifens des Passelements in horizontaler Richtung in der Ebene des Schalungsteils der Summe aus Ausdehnung SA1 des frei zugänglichen Bereichs der ersten Oberfläche des horizontalen Blechmaterialstreifens des Standardelements in horizontaler Richtung in der Ebene des oberen Schalungsteils plus Ausdehnung KA4 des frei zugänglichen Bereichs der vierten Oberfläche des vierten Blechmaterialstreifenabschnitts des Kreuzelements in horizontaler Richtung in der Ebene des vierten oberen Schalungsteils.

According to further preferred embodiments, the extent PA of the horizontal sheet metal strip of the fitting element in the horizontal direction in the plane of the formwork part corresponds to the sum of the extent SA1 of the freely accessible area of the first surface of the horizontal sheet metal material strip of the standard element in the horizontal direction in the plane of the upper formwork part plus the extent KA1 the freely accessible area of the first surface of the first sheet metal strip section of the cross element in the horizontal direction in the plane of the first upper formwork part
and or

• it corresponds to the extension PA of the horizontal sheet metal strip of the fitting element in the horizontal direction in the plane of the formwork part of the sum of the extension SA1 of the freely accessible area of the first surface of the horizontal sheet metal strip of the standard element in the horizontal direction in the plane of the upper formwork part plus extension KA2 of the freely accessible area of the second surface of the second sheet metal strip section of the cross element in the horizontal direction in the plane of the second upper formwork part
  and or
• the extension PA of the horizontal sheet metal strip of the fitting element in the horizontal direction in the plane of the formwork part corresponds to the sum of the extension SA1 of the freely accessible area of the first surface of the horizontal sheet metal material strip of the standard element in the horizontal direction in the plane of the upper formwork part plus the extension KA3 of the freely accessible area Area of the third surface of the third sheet metal strip section of the cross element in the horizontal direction in the plane of the third upper formwork part
  and or
• the extension PA of the horizontal sheet metal strip of the fitting element in the horizontal direction in the plane of the formwork part corresponds to the sum of the extension SA1 of the freely accessible area of the first surface of the horizontal sheet metal material strip of the standard element in the horizontal direction in the plane of the upper formwork part plus the extension KA4 of the freely accessible area Area of the fourth surface of the fourth sheet metal strip section of the cross element in the horizontal direction in the plane of the fourth upper formwork part.

If the dimensions of all four freely accessible areas of the cross element correspond to the dimensions of the fitting element, the identical fitting element can be used to extend the formwork in all four directions given by the cross element.

The formwork system advantageously comprises several fitting elements and several standard elements. This can be fitting elements and standard elements with the same expansion, but also fitting elements and standard elements with different expansion. However, the advantages of the present invention come into play in particular when the smallest possible number of different elements is used.

The horizontal sheet metal strip of the standard element preferably projects over a vertically oriented edge of the lower formwork part. In this protruding area, only the second surface of the horizontal sheet metal strip is freely accessible, but not the first surface of the horizontal sheet metal strip. The freely accessible area of the second surface of the horizontal sheet metal strip has an extension SA2 in the horizontal direction in the plane of the lower formwork part. This embodiment is particularly advantageous when the expansion SA2 of the free accessible area of the second surface of the horizontal sheet metal strip corresponds to the extent SA1 of the freely accessible area of the first surface of the horizontal sheet metal strip. In this case, the same standard element can be used as often as required to extend the formwork in one direction. For this purpose, the freely accessible first surface of the one standard element, which is preferably provided with a sealing coating, needs to be brought into contact with the freely accessible second surface of the other standard element, which is likewise preferably provided with a sealing coating.

To form a shuttering for shuttering a joint running in two directions, a standard element and an angle element of a shuttering system according to the present invention are preferably arranged so that the horizontal sheet metal strip of the standard element and the first sheet metal strip section of the angle element are aligned with one another. The fitting element is arranged between the standard element and the angle element in such a way that the upper formwork part of the standard element, the formwork part of the fitting element and the first upper formwork part of the angle part lie in one plane, the surface of the sheet metal strip of the fitting element facing away from the formwork part of the fitting element with the first Surface of the horizontal sheet metal strip of the standard element and is in contact with the first surface of the first sheet metal strip section of the angle element.

To form a shuttering for shuttering a joint running in three directions, a standard element and a T-element of a shuttering system according to the present invention are preferably arranged so that the horizontal sheet metal strip of the standard element and the first sheet metal strip section of the T-element are aligned with one another. The fitting element is arranged between the standard element and the T-element in such a way that the upper formwork part of the standard element, the formwork part of the fitting element and the first upper formwork part of the T-element lie in one plane, with the surface of the sheet metal strip of the sheet metal material facing away from the formwork part of the fitting element Mating element is in contact with the first surface of the horizontal sheet metal strip of the standard element and with the first surface of the first sheet metal strip section of the T-element.

To form a shuttering for shuttering a joint running in four directions, a standard element and a cross element of a shuttering system according to the present invention are preferably arranged so that the horizontal sheet metal strip of the standard element and the first sheet metal strip section of the cross element are aligned with one another. The fitting element is so between the standard element and the cross element arranged that the upper formwork part of the standard element, the formwork part of the fitting element and the first upper formwork part of the cross element lie in one plane, the surface of the sheet metal material strip of the fitting element facing away from the formwork part of the fitting element with the first surface of the horizontal sheet metal material strip of the Standard element and is in contact with the first surface of the first sheet metal strip section of the cross element.

By using several additional standard elements, fitting elements, angle elements and also T-elements and cross elements, it is very easy to enlarge the formwork system by connecting standardized formwork elements for the formwork of any conceivable joint course in a floor slab.

It is particularly useful with regard to the stability of the standard elements, fitting elements, angle elements, T-elements and cross elements if the individual formwork elements have a transverse or longitudinal bar of the lattice mat preferably used as part of the formwork elements in the area of their boundary edges.

Brief description of the drawings

Fig. 1

eine perspektivische Ansicht eines Standardelements zur Verwendung in einem erfindungsgemäßen Schalungssystem;

Fig. 2

eine seitliche Ansicht des Standardelements gemäß Figur 1;

Fig. 3

eine perspektivische Ansicht eines Winkelelements zur Verwendung in einem erfindungsgemäßen Schalungssystem;

Fig. 4

eine perspektivische Ansicht eines Passelements zur Verwendung in einem erfindungsgemäßen Schalungssystem;

Fig. 5A

eine seitliche Ansicht einer aus einem erfindungsgemäßen Schalungssystem zusammengesetzten Schalung vor dem Einfügen des Passelements;

Fig. 5B

eine seitliche Ansicht der Schalung gemäß Figur 5A nach dem Einfügen des Passelements;

Fig. 6

eine perspektivische Ansicht eines T-Elements zur Verwendung in einem erfindungsgemäßen Schalungssystem;

Fig. 7

eine perspektivische Ansicht eines Kreuzelements zur Verwendung in einem erfindungsgemäßen Schalungssystem.

The invention is to be explained in more detail below on the basis of exemplary embodiments in connection with the drawings. However, it is expressly pointed out that the invention is not intended to be restricted to the examples given. Show it

Fig. 1

a perspective view of a standard element for use in a formwork system according to the invention;

Fig. 2

a side view of the standard element according to Figure 1 ;

Fig. 3

a perspective view of an angle element for use in a formwork system according to the invention;

Fig. 4

a perspective view of a fitting element for use in a formwork system according to the invention;

Figure 5A

a side view of a formwork assembled from a formwork system according to the invention before the insertion of the fitting element;

Figure 5B

a side view of the formwork according to Figure 5A after inserting the fitting element;

Fig. 6

a perspective view of a T-element for use in a formwork system according to the invention;

Fig. 7

a perspective view of a cross element for use in a formwork system according to the invention.

Ways of Carrying Out the Invention

A formwork system according to the invention for concrete construction has at least one standard element S, at least one angle element W and at least one fitting element P.

the Figures 1 and 2 show a standard element S for use in a formwork system according to the invention. The standard element S comprises a lower formwork part S1, an upper formwork part S2 and a horizontal sheet metal strip S3 designed as a flat water barrier.

The formwork parts S1 and S2 consist of a lattice mat comprising transverse and longitudinal bars and an expanded metal sheet welded between the transverse and longitudinal bars of the lattice mat.

The lower shuttering part S1 and the upper shuttering part S2 are arranged in a common plane, with the horizontal sheet metal strip S3 being arranged between the shuttering parts S1, S2 that it is oriented essentially perpendicular to the plane of the shuttering parts S1, S2 and a first Surface S3a of the horizontal sheet metal strip faces the upper formwork part S2 and a second surface S3b of the horizontal sheet metal material strip faces the lower formwork part S1.

The horizontal sheet metal strip S3 protrudes on both sides over the level of the formwork parts S1, S2. The upper formwork part S2 is with the first surface S3a of the horizontal sheet metal strip welded and the lower formwork part S1 is welded to the second surface S3b of the horizontal sheet metal strip.

The horizontal sheet metal strip S3 protrudes over a vertically oriented edge S2R2 of the upper formwork part S2. In this protruding area, only the first surface S3a of the horizontal sheet metal strip S3 is freely accessible, but not the second surface S3b. The freely accessible area of the first surface S3a of the horizontal sheet metal strip S3 has an extension SA1 in the horizontal direction in the plane of the upper formwork part S2.

Figure 3 shows a perspective view of an angle element W for use in a formwork system according to the invention for concrete construction. The angle element W comprises a first lower formwork part WU1, a second lower formwork part WU2, a first upper formwork part WO1, a second upper formwork part WO2 and a horizontal sheet metal strip W3 designed as a flat water barrier.

The formwork parts WU1, WO1, WU2, WO2 consist of a lattice mat comprising transverse and longitudinal bars and an expanded metal sheet welded in between the transverse and longitudinal bars of the lattice mat.

The horizontal sheet metal strip W3 has a first sheet metal strip section W31 and a second sheet metal strip section W32, the first sheet metal strip section W31 and the second sheet metal strip section W32 enclosing an angle δ _W12 = 90 ° with one another.

The first lower formwork part WU1 and the first upper formwork part WO1 are also arranged in a common plane, just as the second lower formwork part WU2 and the second upper formwork part WO2 are arranged in a common plane.

The first lower formwork part WU1 and the second lower formwork part WU2 enclose an angle α _W12 = 90 ° with one another. The same applies to the first upper formwork part WO1 and the second upper formwork part WO2, which enclose an angle β _W12 with one another, which is also 90 °.

The first sheet metal strip section W31 is arranged between the first lower formwork part WU1 and the first upper formwork part WO1 that it is aligned essentially perpendicular to the plane of the first formwork parts WU1, WO1 and a first surface W31a of the first sheet metal strip section faces the first upper formwork part WO1 and a second surface W31b of the first sheet metal strip section faces the first lower formwork part WU1 and the first sheet metal strip section W31 protrudes on both sides over the plane of the first formwork parts WU1, WO1. The first upper formwork part WO1 is welded to the first surface W31a of the first sheet metal strip section and the first lower formwork part WU1 is welded to the second surface W31b of the first sheet metal material strip section.

The second sheet metal strip section W32 is arranged between the second lower formwork part WU2 and the second upper formwork part WO2 that it is oriented essentially perpendicular to the plane of the second formwork parts WU2, WO2 and a first surface W32a of the second sheet metal strip section is aligned with the second upper formwork part WO2 and a second surface W32b of the second sheet metal strip section faces the second lower formwork part WU2 and the second sheet metal material strip section W32 protrudes on both sides over the plane of the second formwork parts WU2, WO2. The second upper formwork part WO2 is welded to the first surface W32a of the second sheet metal material strip section and the second lower formwork part WU2 is welded to the second surface W32b of the second sheet metal material strip section.

The first sheet metal strip section W31 projects over the vertically oriented edge WO1R of the first upper formwork part WO1. In this protruding area, only the first surface W31a of the first sheet metal strip section W31 is freely accessible, but not the second surface W31b. The freely accessible area of the first surface W31a of the first sheet metal strip section W31 has an extension WA1 in the horizontal direction in the plane of the first upper formwork part WO1.

The second sheet metal strip section W32 projects over the vertically oriented edge WO2R of the second upper formwork part WO2. In this protruding area, only the first surface W32a of the second sheet metal strip section W32 is freely accessible, but not the second surface W32b. The freely accessible area of the first surface W32a of the second sheet metal strip section W32 has an extension WA2 in the horizontal direction in the plane of the second upper formwork part WO2.

the Figure 4 shows a perspective view of a fitting element P for use in a formwork system according to the invention. The fitting element P has a formwork part P1 and a horizontal sheet metal strip P2 designed as a flat water barrier.

The horizontal sheet metal strip P2 is aligned essentially perpendicular to the plane of the formwork part P1. The first surface P2a of the horizontal sheet metal strip faces the formwork part P1, while a second surface P2b of the horizontal sheet metal material strip faces away from the formwork part P1. The horizontal sheet metal strip P2 protrudes on both sides over the plane of the formwork part P1. The formwork part P1 is welded to the first surface P2a of the horizontal sheet metal strip.

The horizontal sheet metal strip P2 and the formwork part P1 have the same extent PA in the horizontal direction in the plane of the formwork part P1.

Based on Figures 5A and 5B can the interaction of the Figures 1 to 4 elements shown standard element S, angle element W and fitting element P are explained. the Figure 5A shows a side view of a formwork assembled from a formwork system according to the present invention before the insertion of the fitting element P, while the Figure 5B shows the same formwork after the fitting element P has been inserted.

In the Figure 5A the elements of a formwork for concrete construction according to the present invention, namely standard element S, angle element W and a fitting element P are shown. All three elements have a strip of sheet metal material which is designed as a water barrier and runs in the horizontal direction when installed. The surface S3a of the sheet metal strip S3 of the standard element S facing the upper formwork part S2 and also the surface W31a of the first sheet metal strip section of the sheet metal material strip W3 of the angle element W facing the first upper formwork part WO1 is freely accessible, i.e. not connected to a formwork part.

To form a shuttering, the standard element S and the angle element W are set up in such a way that the two freely accessible surfaces S3a, W31a of the sheet-metal material strips S3, W3 are arranged adjacent to one another in alignment with one another. The extension of the horizontal sheet metal strip P2 of the fitting element P in the horizontal direction in the plane of the formwork part P1 is denoted by PA. The extent of the freely accessible area of the first surface S3a of the horizontal sheet metal strip S3 of the standard element S in the horizontal direction in the plane of the upper formwork part S2 is SA1. Finally, the extent of the freely accessible area of the first surface W31a of the first sheet metal strip section of the angle element W is in the horizontal direction in the plane of the first upper formwork part WO1 with WA1 in FIG Figure 5A shown.

Since the extent PA of the horizontal sheet metal strip P2 of the fitting element P corresponds to the sum of the extent SA1 of the freely accessible area of the first surface S3a of the horizontal sheet metal strip of the standard element S plus the extent WA1 of the freely accessible area of the first surface W31a of the first sheet metal strip section of the angle element W, can the fitting element P can be inserted between the standard element S and the angle element W. This situation is in the Figure 5B shown. The upper formwork parts S2, P1 and WO1 of the three elements as well as the lower formwork parts S1 and WU1 of the standard element or angle element are then arranged in a common plane and form a continuous, closed formwork.

The angle element W now makes it possible to continue the formwork by connecting a further standard element and inserting a further fitting element in a direction perpendicular to the formwork plane described above. The three formwork elements standard element S, angle element W and fitting element P thus provide a modular system with the help of which a large variety of non-linear joints can be closed. No assembly adapted to the respective installation situation is required. Since the elements are prefabricated in large numbers, there are significant cost savings compared to individually manufactured formwork.

The sheet metal strips S3, W3, P2 of the standard element S, the angle element W and the fitting element P are provided with a sealing coating (not shown) made of butyl rubber over their entire surface. Since such a sealing coating has a certain stickiness, the sheet-metal material strips S3 and W3 are glued to the surface P2b of the sheet-metal material strip P2 of the fitting element P via their surfaces S3a and W31a, respectively, after the fitting element P has been inserted between the standard element S and the angle element W. This gives the entire formwork system additional stability.

the Figure 6 shows a perspective view of a T-element T for use in a formwork system according to the present invention. Such a T-element can be used in addition to the in Figure 3 angle element W shown can be used or the angle element W can be used as a specific variant.

The T-element T has a first lower shuttering part TU1, a second lower shuttering part TU2, a third lower shuttering part TU3, a first upper shuttering part TO1, a second upper shuttering part TO2, a third upper shuttering part TO3 and a horizontal sheet metal strip designed as a flat water barrier T3, the horizontal sheet metal strip T3 having a first sheet metal strip section T31, a second sheet metal strip section T32 and a third Has sheet metal strip portion T33. The formwork parts TU1, TU2, TU3, TO1, TO2, TO3 each consist of a lattice mat comprising transverse and longitudinal bars and an expanded metal sheet welded between the transverse and longitudinal bars of the lattice mat.

The first sheet metal strip section T31 and the second sheet metal strip section T32 enclose an angle δ _T12 = 90 ° with one another, while the first sheet metal material strip section T31 and the third sheet metal strip section T33 form an angle δ _T13 = 180 ° with one another and the second sheet metal material strip section T32 and the third sheet metal strip section T33 form a Include angle δ _T23 = 90 ° with one another. the Figure 6 shows an embodiment of the T-element, the shape of which corresponds exactly to a "T". However, it should be mentioned again that the present invention comprises a large number of further embodiments in which the angles δ _T12 , δ _T13 and δ _T23 differ from the values 90 ° and 180 °. For example, the angle δ _T13 can be 180 °, but the angles δ _T12 and δ _T23 can deviate from 90 °. In this case, the T-element still consists of a flange and a web, but these are not perpendicular to one another.

The first lower shuttering part TU1 and the first upper shuttering part TO1 are arranged in a common plane, the second lower shuttering part TU2 and the second upper shuttering part TO2 are arranged in a common plane and finally the third lower shuttering part TU3 and the third upper shuttering part TO3 are also arranged arranged in a common plane. The first lower formwork part TU1 and the second lower formwork part TU2 form an angle α _T12 = 90 ° with one another, the first upper formwork part TO1 and the second upper formwork part TO2 form an angle β _T12 of 90 ° with one another, the first lower formwork part TU1 and the third lower shuttering part TU3 form an angle α _T13 = 180 ° with one another, the first upper shuttering part TO1 and the third upper shuttering part TO3 also form an angle β _T13 of 180 ° with one another, the second lower shuttering part TU2 and the third lower shuttering part TU3 enclose an angle α _T23 = 90 ° with one another, the second upper formwork part TO2 and the third upper formwork part TO3 form an angle β _T23 of also 90 ° with one another.

The angles between the individual formwork parts therefore correspond to the angles between the corresponding sheet metal strips. As already explained in connection with the arrangement of the sheet metal strips relative to one another, this is a specific embodiment. The angles can also have different values.

The first sheet metal strip section T31 is arranged between the first lower shuttering part TU1 and the first upper shuttering part TO1 that it is aligned essentially perpendicular to the plane of the first shuttering parts TU1, TO1 and a first surface T31a of the first sheet metal strip section faces the first upper shuttering part TO1 and a second surface T31b of the first sheet metal strip section faces the first lower shuttering part TU1 and the first sheet metal strip section T31 protrudes on both sides over the plane of the first shuttering parts TU1, TO1.

The second sheet metal strip section T32 is arranged between the second lower shuttering part TU2 and the second upper shuttering part TO2 that it is oriented essentially perpendicular to the plane of the second shuttering parts TU2, TO2 and a first surface T32a of the second sheet metal strip section is aligned with the second upper shuttering part TO2 and a second surface T32b of the second sheet metal strip section faces the second lower formwork part TU2 and the second sheet metal material strip section T32 protrudes on both sides over the plane of the second formwork parts TU2, TO2.

Finally, the third sheet metal strip section T33 is arranged between the third lower shuttering part TU3 and the third upper shuttering part TO3 that it is oriented essentially perpendicular to the plane of the third shuttering parts TU3, TO3 and a first surface T33a of the third sheet metal strip section is aligned with the third upper shuttering part TO3 faces and a second surface T33b of the third sheet metal strip section faces the third lower formwork part TU3 and the third sheet metal material strip section T33 protrudes on both sides over the plane of the third formwork parts TU3, TO3.

The first upper shuttering part TO1 is welded to the first surface T31a of the first sheet metal strip section, the first lower shuttering part TU1 is welded to the second surface T31b of the first sheet metal strip section, the second upper shuttering part TO2 is welded to the first surface T32a of the second sheet metal strip section, the second lower shuttering part TU2 is welded to the second surface T32b of the second sheet metal strip section, the third upper shuttering part TO3 is welded to the first surface T33a of the third sheet metal strip section and the third lower shuttering part TU3 is welded to the second surface T33b of the third sheet metal strip section.

The first sheet metal strip section T31 protrudes over the vertically oriented edge TO1R of the first upper formwork part TO1. In this protruding area, only the first surface T31a of the first sheet metal strip section T31 is freely accessible formed, but not the second surface T31b. The freely accessible area of the first surface T31a of the first sheet metal strip section T31 has an extension TA1 in the horizontal direction in the plane of the first upper formwork part TO1.

The second sheet metal strip section T32 projects over a vertically oriented edge TO2R of the second upper formwork part TO2. In this protruding area, only the first surface T32a of the second sheet metal strip section T32 is freely accessible, but not the second surface T32b. The freely accessible area of the first surface T32a of the second sheet metal strip section T32 has an extension TA2 in the horizontal direction in the plane of the second upper formwork part TO2.

The third sheet metal strip section T33 protrudes over a vertically oriented edge TO3R of the third upper formwork part TO3. In this protruding area, only the first surface T33a of the third sheet metal strip section T33 is freely accessible, but not the second surface T33b. The freely accessible area of the first surface T33a of the third sheet metal strip section T33 has an extension TA3 in the horizontal direction in the plane of the third upper formwork part TO3.

In the exemplary embodiment shown, TA1, TA2 and TA3 are of the same size. When using the in Figure 6 T-element shown in a formwork system according to the present invention therefore only needs to be kept in stock a single embodiment of the fitting element P, namely a fitting element in which the extension PA of the horizontal sheet metal strip P2 in the horizontal direction in the plane of the formwork part P1 of the sum Extension SA1 of the freely accessible area of the first surface S3a of the horizontal sheet metal strip S3 of the standard element S in the horizontal direction in the plane of the upper formwork part S2 plus extension TA1, TA2, TA3 of the freely accessible area of the first surface T31a, T32a, T33a of the first, second or third sheet material strip section T31, T32, T33 of the T-element T in the horizontal direction in the plane of the first upper, second upper or third upper formwork part TO1, TO2, TO3. With the help of a corresponding number of standard elements, a large number of differently running joints can be closed off with this modular system.

the Figure 7 shows a cross element K, which can be provided in addition to the angle element W, but which can also serve as a special embodiment of the angle element W. The cross element K has a first lower shuttering part KU1, a second lower shuttering part KU2, and a third lower one Formwork part KU3, a fourth lower formwork part KU4, a first upper formwork part KO1, a second upper formwork part KO2, a third upper formwork part KO3, a fourth upper formwork part KO4 and a horizontal sheet metal strip K3 designed as a flat water barrier. The horizontal sheet metal strip K3 has a first sheet metal strip section K31, a second sheet metal strip section K32, a third sheet metal strip section K33 and a fourth sheet metal strip section K34.

The angles δK12, δK23, δK34 and δK41 between the different sheet metal strip sections K31, K32, K33, K34 are all 90 °.

As already described in connection with the angle element W and the T element T, the respective lower and upper formwork parts are arranged in a common plane. The lower and the upper formwork parts enclose angles αK12, αK23, αK34, αK41 or βK12, βK23, βK34, βK41 with each other, which are all 90 °.

As already described several times, the individual sheet metal strip sections K31, K32, K33, K34 are each arranged between the corresponding lower formwork part KU1, KU2, KU3, KU4 and the corresponding upper formwork part KO1, KO2, KO3, KO4 that the sheet metal material strip sections are essentially perpendicular to the plane of the corresponding formwork parts, with a first surface K31a, K32a, K33a, K34a of the sheet metal strip sections facing the respective upper formwork part KO1, KO2, KO3, KO4 and a second surface K31b, K32b, K33b, K34b of the sheet metal strip sections facing the respective lower formwork part KU1, KU2, KU3, KU4 faces. The respective sheet metal strip section K31, K32, K33, K34 protrudes on both sides over the plane of the corresponding formwork parts.

As already described, all formwork parts are welded to the corresponding surface of the respective sheet metal strip section.

As already described in connection with the angle element W and the T element T, the respective sheet metal strip section K31, K32, K33, K34 jumps over the corresponding vertically oriented edge KO1R, KOR2, KOR3, KOR4 of the respective upper formwork part KO1, KO2, KO3, KO4 before. In the respective protruding area, only the corresponding first surface K31a, K32a, K33a, K34a of the corresponding sheet metal strip section K31, K32, K33, K34 is freely accessible, but not the corresponding second surface K31b, K32b, K33b, K34b. The freely accessible areas of the first surface K31a, K32a, K33a, K34a of the respective sheet metal strip section K31, K32, K33, K34 point in the horizontal direction in the Level of the respective upper formwork part KO1, KO2, KO3, KO4 an equal extent KA1, KA2, KA3, KA4.

Since KA1, KA2, KA3 and KA4 are of equal size in the exemplary embodiment shown, when using the in Figure 7 shown cross element in a formwork system according to the present invention only a single embodiment of the fitting element P to be kept in stock, namely a fitting element in which the extension PA of the horizontal sheet metal strip P2 in the horizontal direction in the plane of the formwork part P1 of the sum of the extension SA1 of the free accessible area of the first surface S3a of the horizontal sheet metal strip S3 of the standard element S in the horizontal direction in the plane of the upper formwork part S2 plus extension KA1, KA2, KA3, KA4 of the freely accessible area of the first surface K31a, K32a, K33a, K34a of the first, second , third and fourth sheet metal strip sections K31, K32, K33, K34 of the cross element K in the horizontal direction in the plane of the first upper, second upper, third upper and fourth upper formwork part KO1, KO2, KO3, KO4. With the help of a corresponding number of standard elements, a large number of differently running joints can be closed off with this modular system.

List of reference symbols

S.

Standard element

S1

lower formwork part of the standard element

S2

upper formwork part of the standard element

S3

horizontal sheet metal strip of the standard element

S3a

first surface of the horizontal sheet metal strip S3

S3b

second surface of the horizontal sheet metal strip S3

S1R1

vertically oriented edge of the lower formwork part S1

S2R2

vertically oriented edge of the upper formwork part S2

SA1

Extension of the freely accessible area of the first surface S3a of the horizontal sheet metal strip S3

SA2

Extension of the freely accessible area of the second surface S3b of the horizontal sheet metal strip S3

W.

Angle element

WU1

first lower formwork part of the angle element

WU2

second lower formwork part of the angle element

WO1

first upper formwork part of the angle element

WO2

second upper formwork part of the angle element

W3

horizontal sheet metal strip of the angle element

W31

first sheet metal strip section of sheet metal strip W3

W32

second sheet metal strip section of sheet metal strip W3

δW12

Angle between the first sheet metal strip section W31 and the second sheet metal strip section W32

αW12

Angle between the first lower formwork part WU1 and the second lower formwork part WU2

βW12

Angle between the first upper formwork part WO1 and the second upper formwork part WO2

W31a

first surface of the first sheet metal strip portion W31

W31b

second surface of the first sheet metal strip portion W31

W32a

first surface of the second sheet metal strip portion W32

W32b

second surface of the second sheet metal strip portion W32

WO1R

vertically oriented edge of the first upper formwork part WO1

WO2R

vertically oriented edge of the second upper formwork part WO2

WA1

Extension of the freely accessible area of the first surface W31a of the first sheet metal strip section W31

WA2

Extension of the freely accessible area of the first surface W32a of the second sheet metal strip section W32

P.

Fitting element

P1

Formwork part of the fitting element

P2

horizontal sheet metal strips of the fitting element

P2a

first surface of the horizontal sheet metal strip P2

P2b

second surface of the horizontal sheet metal strip P2

PA

Expansion of the formwork part P1

T

T element

TU1

first lower formwork part of the T-element

TU2

second lower formwork part of the T-element

TU3

third lower formwork part of the T-element

TO1

first upper formwork part of the T-element

TO2

second upper formwork part of the T-element

TO3

third upper formwork part of the T-element

T3

horizontal sheet metal strip of the T-element

T31

first sheet metal strip section of sheet metal material strip T3

T32

second sheet metal strip section of sheet metal material strip T3

T33

third sheet metal strip section of sheet metal strip T3

δT12

Angle between the first sheet metal strip section T31 and the second sheet metal strip section T32

δT13

Angle between the first sheet metal strip section T31 and the third sheet metal strip section T33

δT23

Angle between the second sheet metal strip section T32 and the third sheet metal strip section T33

αT12

Angle between the first lower formwork part TU1 and the second lower formwork part TU2

αT13

Angle between the first lower formwork part TU1 and the third lower formwork part TU3

αT23

Angle between the second lower formwork part TU2 and the third lower formwork part TU3

βT12

Angle between the first upper formwork part TO1 and the second upper formwork part TO2

βT13

Angle between the first upper formwork part TO1 and the third upper formwork part TO3

βT23

Angle between the second upper formwork part TO2 and the third upper formwork part TO3

T31a

first surface of the first sheet metal strip portion T31

T31b

second surface of the first sheet metal strip portion T31

T32a

first surface of the second sheet metal strip portion T32

T32b

second surface of the second sheet metal strip portion T32

T33a

first surface of the third sheet metal strip portion T33

T33b

second surface of the third sheet material strip portion T33

TO1R

vertically oriented edge of the first upper formwork part TO1

TO2R

vertically oriented edge of the second upper formwork part TO2

TO3R

vertically oriented edge of the third upper formwork part TO3

TA1

Extension of the freely accessible area of the first surface T31a of the first sheet metal strip section T31

TA2

Extension of the freely accessible area of the first surface T32a of the second sheet metal strip section T32

TA3

Extension of the freely accessible area of the first surface T33a of the third sheet metal strip section T33

K

Cross element

KU1

first lower formwork part of the cross element

KU2

second lower formwork part of the cross element

KU3

third lower formwork part of the cross element

KU4

fourth lower formwork part of the cross element

KO1

first upper formwork part of the cross element

KO2

second upper formwork part of the cross element

KO3

third upper formwork part of the cross element

KO4

fourth upper formwork part of the cross element

K3

horizontal sheet metal strip of the cross element

K31

first sheet metal strip section of sheet metal material strip K3

K32

second sheet metal strip section of sheet metal material strip K3

K33

third sheet metal strip section of sheet metal material strip K3

K34

fourth sheet metal strip section of the sheet metal material strip K3

δK12

Angle between the first sheet metal strip section K31 and the second sheet metal strip section K32

δK23

Angle between the second sheet metal strip section K32 and the third sheet metal strip section K33

δK34

Angle between the third sheet metal strip section K33 and the fourth sheet metal strip section K34

δK41

Angle between the fourth sheet metal strip section K34 and the first sheet metal strip section K31

αK12

Angle between the first lower formwork part KU1 and the second lower formwork part KU2

αK23

Angle between the second lower formwork part KU2 and the third lower formwork part KU3

αK34

Angle between the third lower formwork part KU3 and the fourth lower formwork part KU4

αK41

Angle between the fourth lower formwork part KU4 and the first lower formwork part KU1

βK12

Angle between the first upper formwork part KO1 and the second upper formwork part KO2

βK23

Angle between the second upper formwork part KO2 and the third upper formwork part KO3

βK34

Angle between the third upper formwork part KO3 and the fourth upper formwork part KO4

βK41

Angle between the fourth upper formwork part KO4 and the first upper formwork part KO1

K31a

first surface of the first sheet metal strip section K31

K31b

second surface of the first sheet metal strip section K31

K32a

first surface of the second sheet metal strip section K32

K32b

second surface of the second sheet metal strip section K32

K33a

first surface of the third sheet metal strip section K33

K33b

second surface of the third sheet material strip section K33

K34a

first surface of the fourth sheet metal strip section K34

K34b

second surface of the fourth sheet metal strip section K34

KO1R

vertically oriented edge of the first upper formwork part KO1

KO2R

vertically oriented edge of the second upper formwork part KO2

KO3R

vertically oriented edge of the third upper formwork part KO3

KO4R

vertically oriented edge of the third upper formwork part KO4

KA1

Extension of the freely accessible area of the first surface K31a of the first sheet metal strip section K31

KA2

Extension of the freely accessible area of the first surface K32a of the second sheet metal strip section K32

KA3

Extension of the freely accessible area of the first surface K33a of the third sheet metal strip section K33

KA4

Extension of the freely accessible area of the first surface K34a of the fourth sheet metal strip section K34

Claims (15)

1. A formwork system for concrete construction, comprising at least one standard element (S), at least one angle element (W) and at least one fit element (P),

   - wherein the at least one standard element (S) comprises a lower formwork part (S1), an upper formwork part (S2), and a horizontal sheet metal material strip (S3) in the form of a flat water barrier,

   wherein the lower formwork part (S1) and the upper formwork part (S2) are arranged in a common plane,

   wherein the horizontal sheet metal material strip (S3) is arranged between the formwork parts (S1, S2) such that it is oriented substantially perpendicular to the plane of the formwork parts (S1, S2), and a first surface (S3a) of the horizontal sheet metal material strip faces the upper formwork part (S2), and a second surface (S3b) of the horizontal sheet metal material strip faces the lower formwork part (S1), and the horizontal sheet metal material strip (S3) projects from the plane of the formwork parts (S1, S2) on both sides,

   wherein the upper formwork part (S2) is connected fixedly to the first surface (S3a) of the horizontal sheet metal material strip, and the lower formwork part (S1) is connected fixedly to the second surface (S3b) of the horizontal sheet metal material strip,

   wherein the horizontal sheet metal material strip (S3) protrudes from a vertically oriented edge (S2R2) of the upper formwork part (S2), and only the first surface (S3a) of the horizontal sheet metal material strip (S3) is freely accessible in the protruding region, wherein the freely accessible region of the first surface (S3a) of the horizontal sheet metal material strip (S3) has an extension (SA1) in the horizontal direction in the plane of the upper formwork part (S2),

   - wherein the at least one angle element (W) comprises a first lower formwork part (WU1), a second lower formwork part (WU2), a first upper formwork part (WO1), a second upper formwork part (WO2), and a horizontal sheet metal material strip (W3) in the form of a flat water barrier, wherein the horizontal sheet metal material strip (W3) comprises a first sheet metal material strip section (W31) and a second sheet metal material strip section (W32),

   wherein the first sheet metal material strip section (W31) and the second sheet metal material strip section (W32) enclose an angle δ_w12 with each other, wherein 180° > δ_w12 > 30° applies,

   wherein the first lower formwork part (WU1) and the first upper formwork part (WO1) are arranged in a common plane,

   wherein the second lower formwork part (WU2) and the second upper formwork part (WO2) are arranged in a common plane,

   wherein the first lower formwork part (WU1) and the second lower formwork part (WU2) enclose an angle α_w12 with each other, wherein 180° > α_w12 > 30° applies,

   wherein the first upper formwork part (WO1)and the second upper formwork part (WO2) enclose an angle β_w12 with each other, wherein 180° > β_w12 > 30° applies,

   wherein the first sheet metal material strip section (W31) is arranged between the first lower formwork part (WU1) and the first upper formwork part (WO1) such that it is oriented substantially perpendicular to the plane of the first formwork parts (WU1, WO1), and a first surface (W31a) of the first sheet metal material strip section faces the first upper formwork part (WO1), and a second surface (W31b) of the first sheet metal material strip section faces the first lower formwork part (WU1), and the first sheet metal material strip section (W31) projects from the plane of the first formwork parts (WU1, WO1) on both sides,

   wherein the first upper formwork part (WO1) is connected fixedly to the first surface (W31a) of the first sheet metal material strip section, and the first lower formwork part (WU1) is connected fixedly to the second surface (W31b) of the first sheet metal material strip section,

   wherein the second sheet metal material strip section (W32) is arranged between the second lower formwork part (WU2) and the second upper formwork part (WO2) such that it is oriented substantially perpendicular to the plane of the second formwork parts (WU2, WO2), and a first surface (W32a) of the second sheet metal material strip section faces the second upper formwork part (WO2), and a second surface (W32b) of the second sheet metal material strip section faces the second lower formwork part (WU2), and the second sheet metal material strip section (W32) projects from the plane of the second formwork parts (WU2, WO2) on both sides,

   wherein the second upper formwork part (WO2) is connected fixedly to the first surface (W32a) of the second sheet metal material strip section, and the second lower formwork part (WU2) is connected fixedly to the second surface (W32b) of the second sheet metal material strip section,

   wherein the first sheet metal material strip section (W31) protrudes from a vertically oriented edge (WO1R) of the first upper formwork part (WO1), and only the first surface (W31a) of the first sheet metal material strip section (W31) is freely accessible in the protruding region, wherein the freely accessible region of the first surface (W31a) of the first sheet metal material strip section (W31) comprises an extension (WA1) in the horizontal direction in the plane of the first upper formwork part (WO1),

   wherein the second sheet metal material strip section (W32) protrudes from a vertically oriented edge (WO2R) of the second upper formwork part (WO2), and only the first surface (W32a) of the second sheet metal material strip section (W32) is freely accessible in the protruding region, wherein the freely accessible region of the first surface (W32a) of the second sheet metal material strip section (W32) comprises an extension (WA2) in the horizontal direction in the plane of the second upper formwork part (WO2),

   - wherein the at least one fit element (P) comprises a formwork part (P1) and a horizontal sheet metal material strip (P2) in the form of a flat water barrier,

   wherein the horizontal sheet metal material strip (P2) is oriented substantially perpendicular to the plane of the formwork part (P1), and a first surface (P2a) of the horizontal sheet metal material strip faces the formwork part (P1), and a second surface (P2b) of the horizontal sheet metal material strip faces away from the formwork part (P1), and the horizontal sheet metal material strip (P2) projects from the plane of the formwork part (P1) on both sides,

   wherein the formwork part (P1) is connected fixedly to the first surface (P2a) of the horizontal sheet metal material strip,

   wherein the horizontal sheet metal material strip (P2) and the formwork part (P1) have the same extension (PA) in the horizontal direction in the plane of the formwork part (P1),

   - wherein the extension (PA) of the horizontal sheet metal material strip (P2) of the fit element (P) in the horizontal direction in the plane of the formwork part (P1) corresponds to the sum of the extension (SA1) of the freely accessible region of the first surface (S3a) of the horizontal sheet metal material strip (S3) of the standard element (S) in the horizontal direction in the plane of the upper formwork part (S2) plus the extension (WA1) of the freely accessible region of the first surface (W31a) of the first sheet metal material strip section (W31) of the angle element (W) in the horizontal direction in the plane of the first upper formwork part (WO1).
2. The formwork system according to claim 1, characterised in that the angle element (W) is in the form of a T-element, or in that at least one T-element (T) is additionally provided, wherein the T-element (T) comprises a first lower formwork part (TU1), a second lower formwork part (TU2), a third lower formwork part (TU3), a first upper formwork part (TO1), a second upper formwork part (TO2), a third upper formwork part (TO3), and a horizontal sheet metal material strip (T3) in the form of a flat water barrier, wherein the horizontal sheet metal material strip (T3) comprises a first sheet metal material strip section (T31), a second sheet metal material strip section (T32), and a third sheet metal material strip section (T33),

   wherein the first sheet metal material strip section (T31) and the second sheet metal material strip section (T32) enclose an angle δ_T12 with each other, wherein 165° > δ_T12 > 30° applies,

   wherein the first sheet metal material strip section (T31) and the third sheet metal material strip section (T33) enclose an angle δ_T13 with each other, wherein 300° > δ_T13 > 30° applies,

   wherein the second sheet metal material strip section (T32) and the third sheet metal material strip section (T33) enclose an angle δ_T23 with each other, wherein 165° > δ_T23 > 30° applies,

   wherein δ_T12 + δ_T13 + δ_T23 = 360° applies,

   wherein the first lower formwork part (TU1) and the first upper formwork part (TO1) are arranged in a common plane,

   wherein the second lower formwork part (TU2) and the second upper formwork part (TO2) are arranged in a common plane,

   wherein the third lower formwork part (TU3) and the third upper formwork part (TO3) are arranged in a common plane,

   wherein the first lower formwork part (TU1) and the second lower formwork part (TU2) enclose an angle α_T12 with each other, wherein 165° > α_T12 > 30° applies,

   wherein the first upper formwork part (TO1) and the second upper formwork part (TO2) enclose an angle β_T12 with each other, wherein 165° > β_T12 > 30° applies,

   wherein the first lower formwork part (TU1) and the third lower formwork part (TU3) enclose an angle α_T13 with each other, wherein 300° > α_T13 > 30° applies,

   wherein the first upper formwork part (TO1) and the third upper formwork part (TO3) enclose an angle β_T13 with each other, wherein 300° > β_T13 > 30° applies,

   wherein the second lower formwork part (TU2) and the third lower formwork part (TU3) enclose an angle α_T23 with each other, wherein 165° > α_T23 > 30° applies,

   wherein the second upper formwork part (TO2) and the third upper formwork part (TO3) enclose an angle β_T23 with each other, wherein 165° > β_T23 > 30° applies,

   wherein α_T12 + α_T13 + α_T23 = 360° applies,

   wherein β_T12 + β_T13 + β_T23 = 360° applies,

   wherein the first sheet metal material strip section (T31) is arranged between the first lower formwork part (TU1) and the first upper formwork part (TO1) such that it is oriented substantially perpendicular to the plane of the first formwork parts (TU1, TO1), and a first surface (T31a) of the first sheet metal material strip section faces the first upper formwork part (TO1), and a second surface (T31b) of the first sheet metal material strip section faces the first lower formwork part (TU1), and the first sheet metal material strip section (T31) projects from the plane of the first formwork parts (TU1, TO1) on both sides,

   wherein the first upper formwork part (TO1) is connected fixedly to the first surface (T31a) of the first sheet metal material strip section, and the first lower formwork part (TU1) is connected fixedly to the second surface (T31b) of the first sheet metal material strip section,

   wherein the second sheet metal material strip section (T32) is arranged between the second lower formwork part (TU2) and the second upper formwork part (TO2) such that it is oriented substantially perpendicular to the plane of the second formwork parts (TU2, TO2), and a first surface (T32a) of the second sheet metal material strip section faces the second upper formwork part (TO2), and a second surface (T32b) of the second sheet metal material strip section faces the second lower formwork part (TU2), and the second sheet metal material strip section (T32) projects from the plane of the second formwork parts (TU2, TO2) on both sides,

   wherein the second upper formwork part (TO2) is connected fixedly to the first surface (T32a) of the second sheet metal material strip section, and the second lower formwork part (TU2) is connected fixedly to the second surface (T32b) of the second sheet metal material strip section,

   wherein the third sheet metal material strip section (T33) is arranged between the third lower formwork part (TU3) and the third upper formwork part (TO3) such that it is oriented substantially perpendicular to the plane of the third formwork parts (TU3, TO3), and a first surface (T33a) of the third sheet metal material strip section faces the third upper formwork part (TO3), and a second surface (T33b) of the third sheet metal material strip section faces the third lower formwork part (TU3), and the third sheet metal material strip section (T33) projects from the plane of the third formwork parts (TU3, TO3) on both sides,

   wherein the third upper formwork part (TO3) is connected fixedly to the first surface (T33a) of the third sheet metal material strip section, and the third lower formwork part (TU3) is connected fixedly to the second surface (T33b) of the third sheet metal material strip section,

   wherein the first sheet metal material strip section (T31) protrudes from a vertically oriented edge (TO1R) of the first upper formwork part (TO1), and only the first surface (T31a) of the first sheet metal material strip section (T31) is freely accessible in the protruding region, wherein the freely accessible region of the first surface (T31a) of the first sheet metal material strip section (T31) has an extension (TA1) in the horizontal direction in the plane of the first upper formwork part (TO1),

   wherein the second sheet metal material strip section (T32) protrudes from a vertically oriented edge (TO2R) of the second upper formwork part (TO2), and only the first surface (T32a) of the second sheet metal material strip section (T32) is freely accessible in the protruding region, wherein the freely accessible region of the first surface (T32a) of the second sheet metal material strip section (T32) has an extension (TA2) in the horizontal direction in the plane of the second upper formwork part (TO2),

   wherein the third sheet metal material strip section (T33) protrudes from a vertically oriented edge (TO3R) of the third upper formwork part (TO3), and only the first surface (T33a) of the third sheet metal material strip section (T33) is freely accessible in the protruding region, wherein the freely accessible region of the first surface (T33a) of the third sheet metal material strip section (T33) has an extension (TA3) in the horizontal direction in the plane of the third upper formwork part (TO3),

   wherein the extension (PA) of the horizontal sheet metal material strip (P2) of the fit element (P) in the horizontal direction in the plane of the formwork part (P1) corresponds to the sum of the extension (SA1) of the freely accessible region of the first surface (S3a) of the horizontal sheet metal material strip (S3) of the standard element (S) in the horizontal direction in the plane of the upper formwork part (S2) plus the extension (TA1) of the freely accessible region of the first surface (T31a) of the first sheet metal material strip section (T31) of the T-element (T) in the horizontal direction in the plane of the first upper formwork part (TO1),

   and/or the extension (PA) of the horizontal sheet metal material strip (P2) of the fit element (P) in the horizontal direction in the plane of the formwork part (P1) corresponds to the sum of the extension (SA1) of the freely accessible region of the first surface (S3a) of the horizontal sheet metal material strip (S3) of the standard element (S) in the horizontal direction in the plane of the upper formwork part (S2) plus the extension (TA2) of the freely accessible region of the second surface (T32a) of the second sheet metal material strip section (T32) of the T-element (T) in the horizontal direction in the plane of the second upper formwork part (TO2),

   and/or the extension (PA) of the horizontal sheet metal material strip (P2) of the fit element (P) in the horizontal direction in the plane of the formwork part (P1) corresponds to the sum of the extension (SA2) of the freely accessible region of the first surface (S3a) of the horizontal sheet metal material strip (S3) of the standard element (S) in the horizontal direction in the plane of the upper formwork part (S2) plus the extension (TA3) of the freely accessible region of the third surface (T33a) of the third sheet metal material strip section (T33) of the T-element (T) in the horizontal direction in the plane of the third upper formwork part (TO3).
3. The formwork system according to one of claims 1 or 2, characterised in that the angle element (W) is in the form of a cross element (K), or in that at least one cross element (K) is additionally provided, wherein the cross element (K) comprises a first lower formwork part (KU1), a second lower formwork part (KU2), a third lower formwork part (KU3), a fourth lower formwork part (KU4), a first upper formwork part (KO1), a second upper formwork part (KO2), a third upper formwork part (KO3), a fourth upper formwork part (KO4) and a horizontal sheet metal material strip (K3) in the form of a flat water barrier, wherein the horizontal sheet metal material strip (K3) comprises a first sheet metal material strip section (K31), a second sheet metal material strip section (K32), a third sheet metal material strip section (K33) and a fourth sheet metal material strip section (K34),

   wherein the first sheet metal material strip section (K31) and the second sheet metal material strip section (K32) enclose an angle δ_K12 with each other, wherein 110° > δ_K12 > 30° applies,

   wherein the second sheet metal material strip section (K32) and the third sheet metal material strip section (K33) enclose an angle δ_K23 with each other, wherein 110° > δ_K23 >,30° applies

   wherein the third sheet metal material strip section (K33) and the fourth sheet metal material strip section (K34) enclose an angle δ_K34 with each other, wherein 110° > δ_K34 > 30° applies,

   wherein the fourth sheet metal material strip section (K34) and the first sheet metal material strip section (K31) enclose an angle δ_K41 with each other, wherein 270° > δ_K41 > 30° applies,

   wherein δ_K12 + β_K23 + β_K34 + δ_K41 = 360° applies,

   wherein the first lower formwork part (KU1) and the first upper formwork part (KO1) are arranged in a common plane,

   wherein the second lower formwork part (KU2) and the second upper formwork part (KO2) are arranged in a common plane,

   wherein the third lower formwork part (KU3) and the third upper formwork part (KO3) are arranged in a common plane,

   wherein the fourth lower formwork part (KU4) and the fourth upper formwork part (KO4) are arranged in a common plane,

   wherein the first lower formwork part (KU1) and the second lower formwork part (KU2) enclose an angle α_K12 with each other, wherein 110° > α_K12 > 30° applies,

   wherein the first upper formwork part (KO1) and the second upper formwork part (KO2) enclose an angle β_K12 with each other, wherein 110° > β_K12 > 30° applies,

   wherein the second lower formwork part (KU2) and the third lower formwork part (KU3) enclose an angle α_K23 with each other, wherein 110° > α_K23 > 30° applies,

   wherein the second upper formwork part (KO2) and the third upper formwork part (KO3) enclose an angle β_K23 with each other, wherein 110° > β_K23 > 30° applies,

   wherein the third lower formwork part (KU3) and the fourth lower formwork part (KU4) enclose an angle α_K34 with each other, wherein 110° > α_K34 > 30° applies,

   wherein the third upper formwork part (KO3) and the fourth upper formwork part (KO4) enclose an angle β_K34 with each other, wherein 110° > P_K34 > 30° applies, wherein the fourth lower formwork part (KU4) and the first lower formwork part (KU1) enclose an angle α_K41 with each other, wherein 270° > α_K41 > 30° applies,

   wherein the fourth upper formwork part (KO4) and the first upper formwork part (KO1) enclose an angle β_K41 with each other, wherein 270° > β_K41 > 30° applies,

   wherein α_K12 + α_K23 + α_K34 + α_K41 = 360° applies,

   wherein β_K12 + β_K23 + β_K34 + β_K41 = 360° applies,

   wherein the first sheet metal material strip section (K31) is arranged between the first lower formwork part (KU1) and the first upper formwork part (KO1) such that it is oriented substantially perpendicular to the plane of the first formwork parts (KU1, KO1), and a first surface (K31a) of the first sheet metal material strip section faces the first upper formwork part (KO1), and a second surface (K31b) of the first sheet metal material strip section faces the first lower formwork part (KU1), and the first sheet metal material strip section (K31) projects from the plane of the first formwork parts (KU1, KO1) on both sides,

   wherein the first upper formwork part (KO1) is connected fixedly to the first surface (K31a) of the first sheet metal material strip section, and the first lower formwork part (KU1) is connected fixedly to the second surface (K31b) of the first sheet metal material strip section,

   wherein the second sheet metal material strip section (K32) is arranged between the second lower formwork part (KU2) and the second upper formwork part (KO2) such that it is oriented substantially perpendicular to the plane of the second formwork parts (KU2, KO2), and a first surface (K32a) of the second sheet metal material strip section faces the second upper formwork part (KO2), and a second surface (K32b) of the second sheet metal material strip section faces the second lower formwork part (KU2), and the second sheet metal material strip section (K32) projects from the plane of the second formwork parts (KU2, KO2) on both sides,

   wherein the second upper formwork part (KO2) is connected fixedly to the first surface (K32a) of the second sheet metal material strip section, and the second lower formwork part (KU2) is connected fixedly to the second surface (K32b) of the second sheet metal material strip section,

   wherein the third sheet metal material strip section (K33) is arranged between the third lower formwork part (KU3) and the third upper formwork part (KO3) such that it is oriented substantially perpendicular to the plane of the third formwork parts (KU3, KO3), and a first surface (K33a) of the third sheet metal material strip section faces the third upper formwork part (KO3), and a second surface (K33b) of the third sheet metal material strip section faces the third lower formwork part (KU3), and the third sheet metal material strip section (K33) projects from the plane of the third formwork parts (KU3, KO3) on both sides,

   wherein the third upper formwork part (KO3) is connected fixedly to the first surface (K33a) of the third sheet metal material strip section, and the third lower formwork part (KU3) is connected fixedly to the second surface (K33b) of the third sheet metal material strip section,

   wherein the fourth sheet metal material strip section (K34) is arranged between the fourth lower formwork part (KU4) and the fourth upper formwork part (KO4) such that it is oriented substantially perpendicular to the plane of the fourth formwork parts (KU4, KO4), and a first surface (K34a) of the third sheet metal material strip section faces the fourth upper formwork part (KO4), and a second surface (K34b) of the fourth sheet metal material strip section faces the fourth lower formwork part (KU4), and the fourth sheet metal material strip section (K34) projects from the plane of the fourth formwork parts (KU4, KO4) on both sides,

   wherein the fourth upper formwork part (KO4) is connected fixedly to the first surface (K34a) of the fourth sheet metal material strip section, and the fourth lower formwork part (KU4) is connected fixedly to the second surface (K34b) of the fourth sheet metal material strip section,

   wherein the first sheet metal material strip section (K31) protrudes from a vertically oriented edge (KO1R) of the first upper formwork part (KO1), and only the first surface (K31a) of the first sheet metal material strip section (K31) is freely accessible in the protruding region, wherein the freely accessible region of the first surface (K31a) of the first sheet metal material strip section (K31) has an extension (KA1) in the horizontal direction in the plane of the first upper formwork part (KO1),

   wherein the second sheet metal material strip section (K32) protrudes from a vertically oriented edge (KO2R) of the second upper formwork part (KO2), and only the first surface (K32a) of the second sheet metal material strip section (K32) is freely accessible in the protruding region, wherein the freely accessible region of the first surface (K32a) of the second sheet metal material strip section (K32) has an extension (KA2) in the horizontal direction in the plane of the second upper formwork part (KO2),

   wherein the third sheet metal material strip section (K33) protrudes from a vertically oriented edge (KO3R) of the third upper formwork part (KO3), and only the first surface (K33a) of the third sheet metal material strip section (K33) is freely accessible in the protruding region, wherein the freely accessible region of the first surface (K33a) of the third sheet metal material strip section (K33) has an extension (KA3) in the horizontal direction in the plane of the third upper formwork part (KO3),

   wherein the fourth sheet metal material strip section (K34) protrudes from a vertically oriented edge (KO4R) of the fourth upper formwork part (KO4), and only the first surface (K34a) of the fourth sheet metal material strip section (K34) is freely accessible in the protruding region, wherein the freely accessible region of the first surface (K34a) of the fourth sheet metal material strip section (K34) has an extension (KA4) in the horizontal direction in the plane of the fourth upper formwork part (KO4),

   wherein the extension (PA) of the horizontal sheet metal material strip (P2) of the fit element (P) in the horizontal direction in the plane of the formwork part (P1) corresponds to the sum of the extension (SA1) of the freely accessible region of the first surface (S3a) of the horizontal sheet metal material strip (S3) of the standard element (S) in the horizontal direction in the plane of the upper formwork part (S2) plus the extension (KA1) of the freely accessible region of the first surface (K31a) of the first sheet metal material strip section (K31) of the cross element (K) in the horizontal direction in the plane of the first upper formwork part (KO1),

   and/or

   and/or the extension (PA) of the horizontal sheet metal material strip (P2) of the fit element (P) in the horizontal direction in the plane of the formwork part (P1) corresponds to the sum of the extension (SA1) of the freely accessible region of the first surface (S3a) of the horizontal sheet metal material strip (S3) of the standard element (S) in the horizontal direction in the plane of the upper formwork part (S2) plus the extension (KA2) of the freely accessible region of the second surface (K32a) of the second sheet metal material strip section (K32) of the cross element (K) in the horizontal direction in the plane of the second upper formwork part (KO2),

   and/or

   the extension (PA) of the horizontal sheet metal material strip (P2) of the fit element (P) in the horizontal direction in the plane of the formwork part (P1) corresponds to the sum of the extension (SA2) of the freely accessible region of the first surface (S3a) of the horizontal sheet metal material strip (S3) of the standard element (S) in the horizontal direction in the plane of the upper formwork part (S2) plus the extension (KA3) of the freely accessible region of the third surface (K33a) of the third sheet metal material strip section (K33) of the cross element (K) in the horizontal direction in the plane of the third upper formwork part (KO3),

   and/or

   the extension (PA) of the horizontal sheet metal material strip (P2) of the fit element (P) in the horizontal direction in the plane of the formwork part (P1) corresponds to the sum of the extension (SA1) of the freely accessible region of the first surface (S3a) of the horizontal sheet metal material strip (S3) of the standard element (S) in the horizontal direction in the plane of the upper formwork part (S2) plus the extension (KA4) of the freely accessible region of the fourth surface (K34a) of the fourth sheet metal material strip section (K34) of the cross element (K) in the horizontal direction in the plane of the fourth upper formwork part (KO4).
4. The formwork system according to any one of claims 1 to 3, characterised in that the sheet metal material strip (S3) of the standard element (S), the sheet metal material strip (W3) of the angle element (W), the sheet metal material strip (P2) of the fit element (P), the sheet metal material strip (T3) of the T-element (T) and/or the sheet metal material strip (K3) of the cross element (K) are each provided on their first and/or second surface at least over some, preferably all of their area with a sealing coating, wherein the sealing coating preferably comprises an adhesive layer for fastening to the respective sheet metal material strip (S3, W3, P2, T3, K3),
   and/or

   the sealing coating preferably consists of butyl rubber, bentonite, bitumen rubber, a hot-melt adhesive or a mixture of these materials,

   and/or

   the sealing coating preferably comprises a thickness between 0.1 mm and 5 mm, preferably a thickness between 0.15 mm and 3 mm, particularly preferably a thickness between 0.2 mm and 2 mm, in particular preferably a thickness between 0.5 mm and 1.5 mm, very particularly preferably a thickness of around 1 mm.
5. The formwork system according to any one of claims 1 to 4, characterised in that the formwork parts (S1, S2) of the standard element (S), the formwork parts (WO1, WO2, WU1, WU2) of the angle element (W), the formwork part (P1) of the fit element (P), the formwork parts (TU1, TO1, TU2, TO2, TU3, TO3) of the T-element (T) and/or the formwork parts (KU1, KO1, KU2, KO2, KU3, KO3, KU4, KO4) of the cross element (K) each comprise a grating, comprising transverse and longitudinal bars, and a metal sheet having holes, in particular an expanded metal sheet or perforated metal sheet, welded in between the transverse and longitudinal bars of the grating.
6. The formwork system according to any one of claims 1 to 5, characterised in that the first sheet metal material strip section (W31) and the second sheet metal material strip section (W32) of the angle element (W) enclose an angle δ_W12 with each other, wherein applies 150° > δ_W12 > 45°, preferably 120° > δ_W12 > 60°, particularly preferably 100° > δ_W12 > 80°, and in particular δ_W12 = 90°,
   and/or

   the first lower formwork part (WU1) and the second lower formwork part (WU2) of the angle element (W) enclose an angle α_W12 with each other, wherein applies 150° > α_W12 > 45°, preferably 120° > α_W12 > 60°, particularly preferably 100° > α_W12 > 80°, and in particular α_W12 = 90°,

   and/or

   the first upper formwork part (WO1) and the second upper formwork part (WO2) of the angle element (W) enclose an angle β_W12 with each other, wherein applies 150° > β_W12 > 45°, preferably 120° > β_W12 > 60°, particularly preferably 100° > β_W12 > 80°, and in particular β_W12 = 90°.
7. The formwork system according to any one of claims 2 to 6, characterised in that the first sheet metal material strip section (T31) and the second sheet metal material strip section (T32) of the T-element (T) enclose an angle δ_T12 with each other, wherein applies 120° > δ_T12 > 60°, preferably 110° > δ_T12 > 70°, particularly preferably 100° > δ_T12 > 80°, and in particular δ_T12 = 90°,
   and/or

   the first sheet metal material strip section (T31) and the third sheet metal material strip section (T33) of the T-element (T) enclose an angle δ_T13 with each other, wherein applies 240° > δ_T13 > 120°, preferably 220° > δ_T13 > 140°, particularly preferably 200° > δ_T13 > 160°, and in particular δ_T13 = 180°,

   and/or

   the second sheet metal material strip section (T32) and the third sheet metal material strip section (T33) of the T-element (T) enclose an angle δ_T23 with each other, wherein applies 120° > δ_T23 > 60°, preferably 110° > δ_T23 > 70°, particularly preferably 100° > δ_T23 > 80°, and in particular δ_T23 = 90°.
8. The formwork system according to any one of claims 2 to 7, characterised in that the first lower formwork part (TU1) and the second lower formwork part (TU2) of the T-element (T) enclose an angle α_T12 with each other, wherein applies 120° > α_T12 > 60°, preferably 110° > α_T12 > 70°, particularly preferably 100° > α_T12 > 80°, and in particular α_T12 = 90°,
   and/or

   the first upper formwork part (TO1) and the second upper formwork part (TO2) of the T-element (T) enclose an angle β_T12 with each other, wherein applies 120° > β_T12 > 60°, preferably 110° > β_T12 > 70°, particularly preferably 100° > β_T12 > 80°, and in particular β_T12 = 90°

   and/or

   the first lower formwork part (TU1) and the third lower formwork part (TU3) of the T-element (T) enclose an angle α_T13 with each other, wherein applies 240° > α_T13 > 120°, preferably 220° > α_T13 > 140°, particularly preferably 200° > α_T13 > 160°, and in particular α_T13 = 180°,

   and/or

   the first upper formwork part (TO1) and the third upper formwork part (TO3) of the T-element (T) enclose an angle β_T13 with each other, wherein applies 240° > β_T13 > 120°, preferably 220° > β_T13 > 140°, particularly preferably 200° > β_T13 > 160°, and in particular β_T13 = 180°,

   and/or

   the second lower formwork part (TU2) and the third lower formwork part (TU3) of the T-element (T) enclose an angle α_T23 with each other, wherein applies 120° > α_T23 > 60°, preferably 110° > α_T23 > 70°, particularly preferably 100° > α_T23 > 80°, and in particular α_T23 = 90°,

   and/or

   the second upper formwork part (TO2) and the third upper formwork part (TO3) of the T-element (T) enclose an angle β_T23 with each other, wherein applies 120° > β_T23 > 60°, preferably 110° > β_T23 > 70°, particularly preferably 100° > β_T23 > 80°, and in particular β_T23 = 90°.
9. The formwork system according to any one of claims 1 to 8, characterised in that the extension (PA) of the horizontal sheet metal material strip (P2) of the fit element (P) in the horizontal direction in the plane of the formwork part (P1) corresponds to the sum of the extension (SA1) of the freely accessible region of the first surface (S3a) of the horizontal sheet metal material strip (S3) of the standard element (S) in the horizontal direction in the plane of the upper formwork part (S2) plus the extension (WA2) of the freely accessible region of the second surface (W32a) of the second sheet metal material strip section (W32) of the angle element (W) in the horizontal direction in the plane of the second upper formwork part (WO2).
10. The formwork system according to any one of claims 1 to 9, characterised in that the extension (PA) of the horizontal sheet metal material strip (P2) of the fit element (P) in the horizontal direction in the plane of the formwork part (P1) corresponds to the sum of the extension (SA1) of the freely accessible region of the first surface (S3a) of the horizontal sheet metal material strip (S3) of the standard element (S) in the horizontal direction in the plane of the upper formwork part (S2) plus the extension (TA1) of the freely accessible region of the first surface (T31a) of the first sheet metal material strip section (T31) of the T-element (T) in the horizontal direction in the plane of the first upper formwork part (TO1),
    and/or

    the extension (PA) of the horizontal sheet metal material strip (P2) of the fit element (P) in the horizontal direction in the plane of the formwork part (P1) corresponds to the sum of the extension (SA1) of the freely accessible region of the first surface (S3a) of the horizontal sheet metal material strip (S3) of the standard element (S) in the horizontal direction in the plane of the upper formwork part (S2) plus the extension (TA2) of the freely accessible region of the second surface (T32a) of the second sheet metal material strip section (T32) of the T-element (T) in the horizontal direction in the plane of the second upper formwork part (TO2),

    and/or

    the extension (PA) of the horizontal sheet metal material strip (P2) of the fit element (P) in the horizontal direction in the plane of the formwork part (P1) corresponds to the sum of the extension (SA1) of the freely accessible region of the first surface (S3a) of the horizontal sheet metal material strip (S3) of the standard element (S) in the horizontal direction in the plane of the upper formwork part (S2) plus the extension (TA3) of the freely accessible region of the third surface (T33a) of the third sheet metal material strip section (T33) of the T-element (T) in the horizontal direction in the plane of the third upper formwork part (TO3).
11. The formwork system according to any one of claims 1 to 10, characterised in that the extension (PA) of the horizontal sheet metal material strip (P2) of the fit element (P) in the horizontal direction in the plane of the formwork part (P1) corresponds to the sum of the extension (SA1) of the freely accessible region of the first surface (S3a) of the horizontal sheet metal material strip (S3) of the standard element (S) in the horizontal direction in the plane of the upper formwork part (S2) plus the extension (KA1) of the freely accessible region of the first surface (K31a) of the first sheet metal material strip section (K31) of the cross element (K) in the horizontal direction in the plane of the first upper formwork part (KO1),
    and/or

    and/or the extension (PA) of the horizontal sheet metal material strip (P2) of the fit element (P) in the horizontal direction in the plane of the formwork part (P1) corresponds to the sum of the extension (SA1) of the freely accessible region of the first surface (S3a) of the horizontal sheet metal material strip (S3) of the standard element (S) in the horizontal direction in the plane of the upper formwork part (S2) plus the extension (KA2) of the freely accessible region of the second surface (K32a) of the second sheet metal material strip section (K32) of the cross element (K) in the horizontal direction in the plane of the second upper formwork part (KO2),

    and/or

    the extension (PA) of the horizontal sheet metal material strip (P2) of the fit element (P) in the horizontal direction in the plane of the formwork part (P1) corresponds to the sum of the extension (SA1) of the freely accessible region of the first surface (S3a) of the horizontal sheet metal material strip (S3) of the standard element (S) in the horizontal direction in the plane of the upper formwork part (S2) plus the extension (KA3) of the freely accessible region of the third surface (K33a) of the third sheet metal material strip section (K33) of the cross element (K) in the horizontal direction in the plane of the third upper formwork part (KO3),

    and/or

    the extension (PA) of the horizontal sheet metal material strip (P2) of the fit element (P) in the horizontal direction in the plane of the formwork part (P1) corresponds to the sum of the extension (SA1) of the freely accessible region of the first surface (S3a) of the horizontal sheet metal material strip (S3) of the standard element (S) in the horizontal direction in the plane of the upper formwork part (S2) plus the extension (KA4) of the freely accessible region of the fourth surface (K34a) of the fourth sheet metal material strip section (K34) of the cross element (K) in the horizontal direction in the plane of the fourth upper formwork part (KO4).
12. The formwork system according to any one of claims 1 to 11, characterised in that the horizontal sheet metal material strip (S3) of the standard element (S) protrudes from a vertically oriented edge (S1R1) of the lower formwork part (S1), and only the second surface (S3b) of the horizontal sheet metal material strip (S3) is freely accessible in the protruding region, wherein the freely accessible region of the second surface (S3b) of the horizontal sheet metal material strip (S3) has an extension (SA2) in the horizontal direction in the plane of the lower formwork part (S1).
13. The formwork system according to any one of claims 1 to 12, characterised in that the standard element (S) and the angle element (W) are arranged such that the horizontal sheet metal material strip (S3) of the standard element (S) and the first sheet metal material strip section (W31) of the angle element (W) run flush with each other,

    wherein the fit element (P) is arranged between the standard element (S) and the angle element (W) such that the upper formwork part (S2) of the standard element (S), the formwork part (P1) of the fit element (P), and the first upper formwork part (WO1) of the angle element (W) lie in one plane,

    wherein the surface (P2b) of the sheet metal material strip (P2) of the fit element (P) facing away from the formwork part (P1) of the fit element (P) is in contact with the first surface (S3a) of the horizontal sheet metal material strip (S3) of the standard element (S) and with the first surface (W31a) of the first sheet metal material strip section (W31) of the angle element (W).
14. The formwork system according to any one of claims 2 to 13, characterised in that the standard element (S) and the T-element (T) are arranged such that the horizontal sheet metal material strip (S3) of the standard element (S) and the first sheet metal material strip section (T31) of the T-element (T) run flush with each other,

    wherein the fit element (P) is arranged between the standard element (S) and the T-element (T) such that the upper formwork part (S2) of the standard element (S), the formwork part (P1) of the fit element (P), and the first upper formwork part (TO1) of the T-element (T) lie in one plane,

    wherein the surface (P2b) of the sheet metal material strip (P2) of the fit element (P) facing away from the formwork part (P1) of the fit element (P) is in contact with the first surface (S3a) of the horizontal sheet metal material strip (S3) of the standard element (S) and with the first surface (T31a) of the first sheet metal material strip section (T31) of the T-element (T).
15. The formwork system according to any one of claims 3 to 14, characterised in that the standard element (S) and the cross element (K) are arranged such that the horizontal sheet metal material strip (S3) of the standard element (S) and the first sheet metal material strip section (K31) of the cross element (K) run flush with each other,

    wherein the fit element (P) is arranged between the standard element (S) and the cross element (K) such that the upper formwork part (S2) of the standard element (S), the formwork part (P1) of the fit element (P), and the first upper formwork part (KO1) of the cross element (K) lie in one plane,

    wherein the surface (P2b) of the sheet metal material strip (P2) of the fit element (P) facing away from the formwork part (P1) of the fit element (P) is in contact with the first surface (S3a) of the horizontal sheet metal material strip (S3) of the standard element (S) and with the first surface (K31a) of the first sheet metal material strip section (K31) of the cross element (K).

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