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EP0696668A1 - Device for the erection of a falsework for the underside of a building stair flight - Google Patents

Device for the erection of a falsework for the underside of a building stair flight Download PDF

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Publication number
EP0696668A1
EP0696668A1 EP95112494A EP95112494A EP0696668A1 EP 0696668 A1 EP0696668 A1 EP 0696668A1 EP 95112494 A EP95112494 A EP 95112494A EP 95112494 A EP95112494 A EP 95112494A EP 0696668 A1 EP0696668 A1 EP 0696668A1
Authority
EP
European Patent Office
Prior art keywords
mats
formwork
cross struts
stairs
support
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP95112494A
Other languages
German (de)
French (fr)
Other versions
EP0696668B1 (en
Inventor
Wolfgang Baumann
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Baumann Verwertungsgesellschaft GmbH
Original Assignee
Baumann Verwertungsgesellschaft GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
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Publication of EP0696668A1 publication Critical patent/EP0696668A1/en
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Expired - Lifetime legal-status Critical Current

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    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G13/00—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills
    • E04G13/06—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for stairs, steps, cornices, balconies, or other parts corbelled out of the wall
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G13/00—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills
    • E04G13/06—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for stairs, steps, cornices, balconies, or other parts corbelled out of the wall
    • E04G13/062—Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills for stairs, steps, cornices, balconies, or other parts corbelled out of the wall for stairs or steps
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G9/00—Forming or shuttering elements for general use
    • E04G9/02—Forming boards or similar elements
    • E04G9/06—Forming boards or similar elements the form surface being of metal
    • E04G9/065—Forming boards or similar elements the form surface being of metal the form surface being of wire mesh
    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G9/00—Forming or shuttering elements for general use
    • E04G9/08—Forming boards or similar elements, which are collapsible, foldable, or able to be rolled up

Definitions

  • the invention relates to a device for erecting a formwork for the underside of the stair body of a building staircase, in particular a staircase running around at least one corner, with a substructure and a formwork covering to be held in height by the formwork surface.
  • the present invention is therefore based on the object of providing a device of the type mentioned at the outset which enables a simpler and faster formwork of undersides of the stair body on the construction site.
  • the formwork covering on the erected substructure with the formwork surface corresponding covering has to be laid mats made of flexible mat members that cross braid-like and are rigidly connected to each other.
  • Such mats can be bent and twisted in accordance with the flexible mat members without plastic deformation. Furthermore, due to the rigid connection of the mat members at the crossing points, the surface shape of the mats can be changed, so that a mat that is slightly curved overall can be obtained from a mat that is rectangular in the initial state. In this way, the mats, with the appropriate substructure, practically adapt themselves to the desired profile of the underside of the stair case, especially on a stair corner where a slightly curved mat edge is required.
  • the mats do not have to be cut beforehand.
  • the mats can be formed by a so-called wave grid, that is, they can consist of undulating wires as mat members. Such mats are commercially available.
  • the mats can also have strip-like material strips as mat members, such that the mats form a substantially closed surface.
  • the mats do not form a substantially closed surface, it is necessary for the mats to have surface-covering, formable, closed surface elements made of flexible material.
  • These surface elements can consist of rubber, but it could also be plastic film or polystyrene plates.
  • stair body 1 shows a stair body 1 with a stairway 2 arranged in the building below and a stairway 3 arranged on the next upper floor. Between the stairs 2 and the stairs 3, the stairs run at right angles around two corners. In each corner area, the tread areas forming widen horizontal step surfaces 4 starting from the relevant inner corner area 5 of the stair body 1 outward to the associated outer corner area 6. The individual steps are separated from each other by the vertical step surfaces 7 shown with solid lines.
  • the stair body 1 is cast from concrete. In the drawing, the formwork required for this is still attached.
  • the stair body 1 is delimited on the outside by correspondingly perpendicular building walls 8, 9, 10 to which it is cast.
  • Corresponding formwork elements 11, 12, 13 are placed on the inside of the stairs, which form the corresponding course of the stairs here.
  • the underside of such a stairway body 1 does not run in a step-like manner, but continuously throughout, with a multi-axis curved surface resulting in each corner area.
  • the underside of the stair body 1 has approximately the shape 14 shown in FIG. 6 in the development. It can be seen that in the development from the inner corners 5 and above all from the outer corners 6 there are peripheral areas with a curved course.
  • a corresponding must Formwork on the underside can be erected with a formwork covering 15 which forms a formwork surface 16 corresponding to the underside of the staircase body.
  • the formwork surface 16 thus also has the shape 14 shown in FIG. 6 in the development.
  • the formwork covering 15 is held in height by a substructure.
  • This substructure has in the longitudinal direction of the stairs at a distance from each other successive cross struts 17 extending across the stair width (in FIG. 1, the reference number 17 is not entered for all cross struts), which are supported with their two ends downward by suitable support devices.
  • the cross struts 17 thus span a surface that runs essentially parallel to the formwork surface 16.
  • the cross struts 17 suitably have a continuously variable length, so that they can be adapted to the respective stair width and within the same stair to the respective stair area. In the corner areas of the stairs, the cross struts 17 have to bridge a larger distance, since they run obliquely here.
  • the cross struts 17 consist of two telescopic strut parts 18, 19, of which at least the larger diameter one strut part 18 is tubular and the other Strut part 19 is slidably inserted into the first-mentioned strut part 18.
  • the respective cross strut length can be determined. This can take place, for example, as shown in FIG. 5, in that a locking screw 20 to be actuated from the outside is screwed into a strut part 18 in the radial direction, which can be screwed against the inserted strut part 19 and clamps it.
  • the threaded hole assigned to the locking screw 20 on the strut part 18 can be formed by a welded-on threaded nut.
  • the staircase is delimited on both sides by fixed building walls, one could disregard a locking device for the cross strut length.
  • the stair body is delimited on the inside by the formwork elements 11, 12, 13, however, at least some of the cross struts should be able to be determined in length, so that these cross struts, which on the other hand are attached to the building, are simultaneously used as formwork holders for the formwork elements 11 , 12, 13 can be used if they are attached to the respective formwork element with their end facing them.
  • the support device provided on the outside of the stairway is formed by longitudinal beams 22, 23, 24, 25, 26 which extend substantially parallel to the course of the formwork surface of the stairway side in question.
  • the side members 22 - 26 are in turn held by vertical supports 28 in height, which stand up from the floor or a corresponding base in the manner of a ceiling support.
  • Such longitudinal beams are used above all when there is an already standing building wall on the relevant building side. Accordingly, depending on the local conditions, such longitudinal beams could be provided as a support device not only on one but on both sides of the stairs.
  • the longitudinal beams 22, 23, 25, 26 extending from a stair corner, in the exemplary embodiment extending from the outer corners 6, as shown in FIG are essentially held in the correct position by themselves.
  • the cross struts 17 on its end facing the inside of the staircase is not held by continuous longitudinal beams, but rather by a separate support element 29.
  • This support element 29 is fastened to the wall element arranged on the facing side of the stairs, in the exemplary embodiment these wall elements being formed by the formwork elements 11, 12, 13 to which the support elements 29 can be nailed or screwed.
  • support devices formed by such support elements 29 could also be provided on both sides of the stairs.
  • the cross struts 17 can be held on the support devices in various ways. It is expediently provided that the support devices stand up support bolts 30 or 31 or the like. have, on which the cross struts 17 are attached.
  • the procedure can be such that the support bolts 30 or 31 are respectively inserted through a radially directed hole 32 or 33 in the cross strut as far as the closed cross strut wall 34 or 35 opposite the hole. that conversely the cross struts are attached to the support bolts in this way, so that the Cross struts with the cross strut wall 34 or 35 resting on the respectively facing support bolt.
  • the cross struts 17 can be adjustable in height for fine adjustment of their height with reference to the facing support device.
  • the support bolts 30 are threaded bolts, which are arranged on the respective support device, in the exemplary embodiment on the longitudinal beams 22-26, in a height-adjustable manner.
  • the cross struts 17 are only height-adjustable on these longitudinal beams 22 - 26, while at the opposite end of the support elements 29 there is no such height adjustment possibility.
  • the height adjustment can be carried out very simply so that the threaded bolt forming the respective support bolt 30 carries a screwed adjusting nut 36 or 37 above and below the respective longitudinal beam 22 - 26, so that the threaded bolt with the desired projection upwards on the relevant longitudinal beam can be clamped. If the adjusting nuts are loosened, the threaded bolt in question can be turned.
  • the support bolts 30 are through the side members 22-26 put through.
  • the longitudinal members have plug holes 38 distributed in their longitudinal direction in the manner of a row of holes.
  • the support elements 29 are plate-like parts with a support bolt 31 which projects upward like a hook.
  • This substructure and thereby its cross struts 17 serve as a base for the formwork covering 15.
  • This has mats 39 made of flexible mat members 40, 41, which cross over each other like braids and are rigidly connected to one another.
  • a plurality of such mats 39 which can overlap with their edge regions (see FIGS. 2 and 5), are placed on the substructure in such a way that a covering corresponding to the formwork surface 16 is obtained.
  • the mats 39 have a rectangular shape. Due to their flexibility, they can easily adapt to the curvature and curvature of the surface spanned by the cross struts 17. They can or the like on the cross struts 17 in particular by connecting using a piece of wire. be attached (not shown).
  • the mat members 40, 41 form a grid-like structure, the mat members running parallel to one another 40 cross the other mat members 41, which are also parallel to one another, at right angles. Since the mat members 40, 41 are non-rigidly connected to one another at the intersection points 42, they can perform a relative movement here, so that the mats can be changed in shape in their plane and in particular can be brought into a slightly curved shape (FIG. 4). In this way, the mats 39 can be placed anywhere, including in the corners of the stairs, up to the adjacent wall (building walls 8, 9, 10; formwork elements 11, 12, 13). The development shape 14 shown in FIG. 6 can thus be achieved from the mats 39.
  • the mat members 40, 41 are formed by undulating wires, so that a so-called wave grid is present.
  • the corrugations of the mat members 40, 41 interlock so to speak, so that there is a good fixed cohesion in this respect, which, however, allows changes in angle at the intersection.
  • Each mat member 40 is successively passed alternately above or below one of the other mat members 41 or vice versa, so it is a fabric-like structure.
  • the mat members 40, 41 are not, for example, spot welded to one another at the intersections 42. They are pressed against each other at the crossing points only by the elastic force resulting from the fabric-like structure.
  • the mats 39 are so stable or the distance between the cross struts 17 is chosen so small that the mats 39 do not sag downward between the cross struts 17.
  • closed surface elements 43 made of flexible material and forming the formwork surface 16 are placed over the entire surface of the mat structure represented by the mats.
  • the surface elements 43 thus form a closed surface onto which the concrete resulting from the stair body 1 is then poured.
  • These surface elements 43 can be rubber mat-like or consist of film-like plastic. Also, for example, styrofoam plates or the like. are possible. In this case, these surface elements can either be cut according to the development shape according to FIG. 6 (in FIG. 6, dash-dotted lines are dividing lines between such cut sections indicated), or it is a number of surface elements, which can be superimposed with their edge areas, so that no such great value needs to be placed on their individual shape.
  • the surface elements 43 thus form the formwork skin, so to speak.
  • the mats can also be made of strip-like material as mat members, in such a way that the mats form a substantially closed surface.
  • Such meshes can be found, for example, in chip baskets, etc.
  • the surface elements 43 could also be dispensed with and the mats themselves used as formlining.
  • the formwork described is not only suitable for stairs running around at least one corner is. In principle, this can be used to form any stair body, including a linear stair body or a circular spiral staircase.

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  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Mechanical Engineering (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Forms Removed On Construction Sites Or Auxiliary Members Thereof (AREA)
  • Steps, Ramps, And Handrails (AREA)

Abstract

The device is for the erection of a sheathing for the underside of the step body of a building stairs, in partic. a stairway running around at least one corner. It has a lower construction and a sheathing covering (15) forming the sheath surface on the erected lower surface and mats (39) comprising mat members which cross each other mesh fashion and are unrigidly connected with one another. The mats have a rectangular formation and wave-form running wires as mat members. The mats can also have strip-form material strips as members of the type that they form an essentially closed surface.

Description

Die Erfindung betrifft eine Vorrichtung zum Errichten einer Schalung für die Unterseite des Treppenkörpers einer Gebäudetreppe, insbesondere einer um mindestens ein Eck verlaufenden Treppe, mit einer Unterkonstruktion und einem von dieser in der Höhe zu haltenden, die Schalfläche bildenden Schalungsbelag.The invention relates to a device for erecting a formwork for the underside of the stair body of a building staircase, in particular a staircase running around at least one corner, with a substructure and a formwork covering to be held in height by the formwork surface.

Zum herkömmlichen Schalen solcher Treppenkörper werden Holzbretter od.dgl. verwendet, die auf der Baustelle entsprechend eingepaßt und zugeschnitten werden. Dies ist vor allem bei solchen Treppen sehr zeitraubend, die ohne Bildung eines Podestes um ein Eck verlaufen. Solche Treppen findet man häufig vor allem als Kellertreppen. Bei derartigen Treppen nimmt die Stufenbreite vom Inneneck zum Außeneck hin zu, was einen unebenen und in verschiedenen Richtungen gekrümmten Verlauf der Treppen-Unterseite zur Folge hat.For the conventional formwork of such staircase bodies, wooden boards or the like are used. used, which are adapted and cut accordingly on the construction site. This is very time-consuming, especially for staircases that run around a corner without forming a pedestal. Such stairs are often found primarily as basement stairs. With stairs of this type, the step width increases from the inside corner to the outside corner, which results in an uneven and curved course of the underside of the stairs in different directions.

Der vorliegenden Erfindung liegt deshalb die Aufgabe zugrunde, eine Vorrichtung der eingangs genannten Art zu schaffen, die ein einfacheres und schnelleres Schalen von Treppenkörper-Unterseiten auf der Baustelle ermöglicht.The present invention is therefore based on the object of providing a device of the type mentioned at the outset which enables a simpler and faster formwork of undersides of the stair body on the construction site.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß der Schalungsbelag auf die errichtete Unterkonstruktion mit der Schalfläche entsprechender Bedeckung zu legende Matten aus flexiblen Mattengliedern aufweist, die sich geflechtartig kreuzen und unstarr miteinander verbunden sind.This object is achieved in that the formwork covering on the erected substructure with the formwork surface corresponding covering has to be laid mats made of flexible mat members that cross braid-like and are rigidly connected to each other.

Solche Matten sind den flexiblen Mattengliedern entsprechend ohne plastisches Verformen verbiegbar und in sich verwindbar. Ferner läßt sich auf Grund der unstarren Verbindung der Mattenglieder an den Kreuzungsstellen die Flächengestalt der Matten verändern, so daß sich aus einer im Ausgangszustand rechteckigen Matte eine insgesamt leicht gebogen verlaufende Matte erhalten läßt. Auf diese Weise passen sich die Matten bei entsprechender Unterkonstruktion praktisch von selbst an den gewünschten Verlauf der Treppenkörper-Unterseite an, und zwar vor allem auch an einem Treppeneck, wo man einen leicht gebogen verlaufenden Mattenrand benötigt.Such mats can be bent and twisted in accordance with the flexible mat members without plastic deformation. Furthermore, due to the rigid connection of the mat members at the crossing points, the surface shape of the mats can be changed, so that a mat that is slightly curved overall can be obtained from a mat that is rectangular in the initial state. In this way, the mats, with the appropriate substructure, practically adapt themselves to the desired profile of the underside of the stair case, especially on a stair corner where a slightly curved mat edge is required.

Die Matten müssen vorher nicht zurechtgeschnitten werden.The mats do not have to be cut beforehand.

Es genügt, wenn man eine Anzahl kleinerer Matten zur Verfügung stellt und diese Matten dann mit sich überlappenden Randbereichen auf die Unterkonstruktion legt.It is sufficient to provide a number of smaller mats and then place these mats with overlapping edge areas on the substructure.

Die Matten können von einem sogenannten Wellengitter gebildet werden, das heißt, sie können aus wellenförmig verlaufenden Drähten als Mattenglieder bestehen. Solche Matten sind handelsüblich.The mats can be formed by a so-called wave grid, that is, they can consist of undulating wires as mat members. Such mats are commercially available.

Die Matten können jedoch auch bandartige Material streifen als Mattenglieder aufweisen, derart, daß die Matten eine im wesentlichen geschlossene Fläche bilden.However, the mats can also have strip-like material strips as mat members, such that the mats form a substantially closed surface.

Vor allem dann, wenn die Matten keine im wesentlichen geschlossene Fläche bilden, ist es erforderlich, daß auf die Matten flächendeckend legbare, die Schalfläche bildende, geschlossene Flächenelemente aus flexiblem Material vorhanden sind. Diese Flächenelemente können aus Gummi bestehen, es könnte sich jedoch auch um Kunststoffolie oder um Styroporplatten handeln.Especially when the mats do not form a substantially closed surface, it is necessary for the mats to have surface-covering, formable, closed surface elements made of flexible material. These surface elements can consist of rubber, but it could also be plastic film or polystyrene plates.

Es versteht sich, daß sich solche Flächenelemente auch auf im wesentlichen eine geschlossene Fläche bildende Matten auflegen lassen. Bei diesen Matten ist es jedoch auch prinzipiell möglich, sie unmittelbar als Schalfläche zu verwenden.It is understood that such surface elements can also be placed on mats which essentially form a closed surface. With these mats, however, it is also possible in principle to close them directly as a formwork surface use.

Ein zusätzlicher Vorteil besteht darin, daß die Matten wiederverwendbar sind, das heißt, sie können nach dem Fertigstellen einer Treppe weggenommen werden und stehen dann für weitere Schalungen erneut zur Verfügung. Demgegenüber sind bei der herkömmlichen Vorgehensweise die eingepaßten Bretter regelmäßig verlorene Teile.An additional advantage is that the mats are reusable, which means that they can be removed after the completion of a staircase and are then available again for further formwork. In contrast, in the conventional approach, the fitted boards are regularly lost parts.

Weitere zweckmäßige Ausgestaltungen der Erfindung sind in den Unteransprüchen angegeben.Further expedient refinements of the invention are specified in the subclaims.

Ein Ausführungsbeispiel der Erfindung wird nun anhand der Zeichnung erläutert. Es zeigen:

Fig. 1
einen fertiggestellten Treppenkörper in Draufsicht von oben, wobei die unterseitige Schalung noch angebracht und die Unterkonstruktion gestrichelt angedeutet ist und wobei der Treppenkörper an einer Stelle aufgeschnitten ist, so daß ein die Schalfläche bildendes Flächenelement sowie - da auch dieses Flächenelement seinerseits abgeschnitten gezeigt ist - eine auf die Unterkonstruktion gelegte geflechtartige Matte sichtbar sind,
Fig. 2
eine perspektivische Ansicht gemäß Pfeil II in Fig. 1 von unten her auf die Schalung der Treppenkörper-Unterseite im Bereich des oben gelegenen Treppenaustritts in Teildarstellung,
Fig. 3
eine Matte gemäß vorliegender Erfindung in perspektivischer Teildarstellung,
Fig. 4
eine der Fig. 3 entsprechende Matte in schematischer Darstellung in in der Mattenebene leicht gebogenem Zustand,
Fig. 5
die Anordnung nach Fig. 1 im der Schnittlinie V-V in Fig. 1 entsprechenden Vertikalschnitt und
Fig. 6
die sozusagen abgewickelte Gestalt der Schalfläche bzw. der entsprechenden Treppenkörper-Unterseite der Treppe gemäß Fig. 1.
An embodiment of the invention will now be explained with reference to the drawing. Show it:
Fig. 1
a finished stair body in plan view from above, the underside formwork is still attached and the substructure is indicated by dashed lines and the stair body is cut open at one point, so that a surface element forming the formwork surface and - since this surface element is also shown cut off - one on the substructure of woven mesh-like mat is visible,
Fig. 2
2 shows a perspective view according to arrow II in FIG. 1 from below of the formwork of the underside of the staircase body in the area of the stairway exit above,
Fig. 3
a mat according to the present invention in a partial perspective view,
Fig. 4
3 shows a mat corresponding to FIG. 3 in a schematic illustration in a slightly bent state in the mat plane,
Fig. 5
the arrangement of Fig. 1 in the section line VV in Fig. 1 corresponding vertical section and
Fig. 6
the shape of the formwork surface or the corresponding underside of the staircase body of the staircase according to FIG. 1, so to speak.

Aus Fig. 1 geht ein Treppenkörper 1 mit im Gebäude unten angeordnetem Treppenantritt 2 und einem im nächstoberen Stockwerk angeordneten Treppenaustritt 3 hervor. Zwischen dem Treppenantritt 2 und dem Treppenaustritt 3 verläuft die Treppe rechtwinkelig um zwei Ecken. In jedem Eckbereich verbreitern sich die die Trittflächen bildenden horizontalen Stufenflächen 4 ausgehend vom betreffenden Inneneckbereich 5 des Treppenkörpers 1 nach außen zum zugehörigen Außeneckbereich 6 hin. Die einzelnen Treppenstufen sind durch die mit durchgezogenen Linien dargestellten vertikalen Stufenflächen 7 voneinander getrennt.1 shows a stair body 1 with a stairway 2 arranged in the building below and a stairway 3 arranged on the next upper floor. Between the stairs 2 and the stairs 3, the stairs run at right angles around two corners. In each corner area, the tread areas forming widen horizontal step surfaces 4 starting from the relevant inner corner area 5 of the stair body 1 outward to the associated outer corner area 6. The individual steps are separated from each other by the vertical step surfaces 7 shown with solid lines.

Der Treppenkörper 1 ist aus Beton gegossen. In der Zeichnung ist die hierzu erforderliche Schalung noch angebracht. Dabei wird der Treppenkörper 1 außen durch entsprechend rechtwinkelig zueinander stehende Gebäudewände 8, 9, 10 begrenzt, an die er angegossen ist. An der Treppen-Innenseite sind entsprechende Schalelemente 11, 12, 13 aufgestellt, die hier den entsprechenden Treppenverlauf schalen.The stair body 1 is cast from concrete. In the drawing, the formwork required for this is still attached. The stair body 1 is delimited on the outside by correspondingly perpendicular building walls 8, 9, 10 to which it is cast. Corresponding formwork elements 11, 12, 13 are placed on the inside of the stairs, which form the corresponding course of the stairs here.

Die Unterseite eines solchen Treppenkörpers 1 verläuft nicht stufenförmig, sondern durchgehend flächenhaft, wobei sich in jedem Eckbereich eine mehrachsig gekrümmte Fläche ergibt. Die Unterseite des Treppenkörpers 1 weist in der Abwicklung etwa die aus Fig. 6 hervorgehende Gestalt 14 auf. Es ist ersichtlich, daß sich in der Abwicklung von den Innenecken 5 und vor allem von den Außenecken 6 abgehende Randbereiche mit gebogenem Verlauf ergeben.The underside of such a stairway body 1 does not run in a step-like manner, but continuously throughout, with a multi-axis curved surface resulting in each corner area. The underside of the stair body 1 has approximately the shape 14 shown in FIG. 6 in the development. It can be seen that in the development from the inner corners 5 and above all from the outer corners 6 there are peripheral areas with a curved course.

Bevor der Treppenkörper 1 gegossen wird, muß eine entsprechende unterseitige Schalung mit einem Schalungsbelag 15 errichtet werden, der eine der Treppenkörper-Unterseite entsprechende Schalfläche 16 bildet. Die Schalfläche 16 weist also in der Abwicklung ebenfalls die aus Fig. 6 hervorgehende Gestalt 14 auf.Before the stair body 1 is cast, a corresponding must Formwork on the underside can be erected with a formwork covering 15 which forms a formwork surface 16 corresponding to the underside of the staircase body. The formwork surface 16 thus also has the shape 14 shown in FIG. 6 in the development.

Der Schalungsbelag 15 wird von einer Unterkonstruktion in der Höhe gehalten. Diese Unterkonstruktion weist in Treppen-Längsrichtung mit Abstand zueinander aufeinanderfolgende, über die Treppenbreite verlaufende Querstreben 17 auf (in Fig. 1 ist die Bezugsziffer 17 nicht bei allen Querstreben eingetragen), die mit ihren beiden Enden nach unten hin durch geeignete Abstützeinrichtungen abgestützt sind. Die Querstreben 17 spannen also eine Fläche auf, die im wesentlichen parallel zur Schalfläche 16 verläuft. Die Querstreben 17 besitzen zweckmäßigerweise eine stufenlos veränderbare Länge, so daß sie an die jeweilige Treppenbreite und innerhalb der gleichen Treppe an den jeweiligen Treppenbereich angepaßt werden können. In den Eckbereichen der Treppe müssen die Querstreben 17 ja eine größere Strecke überbrücken, da sie hier schräg verlaufen. Beim Ausführungsbeispiel bestehen die Querstreben 17 hierzu aus zwei teleskopartig aneinander geführten Strebenteilen 18, 19, von denen zumindest das größeren Durchmesser aufweisende eine Strebenteil 18 rohrförmig und das andere Strebenteil 19 längsverschieblich in das erstgenannte Strebenteil 18 eingesteckt ist.The formwork covering 15 is held in height by a substructure. This substructure has in the longitudinal direction of the stairs at a distance from each other successive cross struts 17 extending across the stair width (in FIG. 1, the reference number 17 is not entered for all cross struts), which are supported with their two ends downward by suitable support devices. The cross struts 17 thus span a surface that runs essentially parallel to the formwork surface 16. The cross struts 17 suitably have a continuously variable length, so that they can be adapted to the respective stair width and within the same stair to the respective stair area. In the corner areas of the stairs, the cross struts 17 have to bridge a larger distance, since they run obliquely here. In the embodiment, the cross struts 17 consist of two telescopic strut parts 18, 19, of which at least the larger diameter one strut part 18 is tubular and the other Strut part 19 is slidably inserted into the first-mentioned strut part 18.

Die jeweilige Querstrebenlänge kann feststellbar sein. Dies kann beispielsweise wie in Fig. 5 gezeigt dadurch erfolgen, daß in das eine Strebenteil 18 in radialer Richtung eine von außen her zu betätigende Feststellschraube 20 eingeschraubt ist, die gegen das eingesteckte Strebenteil 19 schraubbar ist und dieses festklemmt. Die der Feststellschraube 20 am Strebenteil 18 zugeordnete Gewindebohrung kann von einer aufgeschweißten Gewindemutter gebildet werden.The respective cross strut length can be determined. This can take place, for example, as shown in FIG. 5, in that a locking screw 20 to be actuated from the outside is screwed into a strut part 18 in the radial direction, which can be screwed against the inserted strut part 19 and clamps it. The threaded hole assigned to the locking screw 20 on the strut part 18 can be formed by a welded-on threaded nut.

Falls die Treppe beidseitig von feststehenden Gebäudewänden begrenzt wird, könnte man von einer Feststellungseinrichtung für die Querstrebenlänge absehen. Beim Ausführungsbeispiel , bei dem der Treppenkörper innenseitig von den Schalelementen 11, 12, 13 begrenzt wird, sollten jedoch zumindest einige der Querstreben in der Länge feststellbar sein, so daß man diese Querstreben, die andererseits gebäudefest angebracht sind, gleichzeitig als Schalungshalter für die Schalelemente 11, 12, 13 verwenden kann, wenn sie mit ihrem diesen zugewandten Ende am jeweiligen Schalelement befestigt werden.If the staircase is delimited on both sides by fixed building walls, one could disregard a locking device for the cross strut length. In the embodiment in which the stair body is delimited on the inside by the formwork elements 11, 12, 13, however, at least some of the cross struts should be able to be determined in length, so that these cross struts, which on the other hand are attached to the building, are simultaneously used as formwork holders for the formwork elements 11 , 12, 13 can be used if they are attached to the respective formwork element with their end facing them.

Beim Ausführungsbeispiel wird die an der Treppen-Außenseite vorhandene Abstützungseinrichtung von sich im wesentlichen parallel zum Verlauf der Schalfläche der betreffenden Treppenseite entlang in der Höhe erstreckenden Längsträgern 22, 23, 24, 25, 26 gebildet. Die Längsträger 22 - 26 werden ihrerseits durch Vertikal stützen 28 in der Höhe gehalten, die vom Boden oder einer entsprechenden Unterlage nach Art einer Deckenstütze hochstehen.In the exemplary embodiment, the support device provided on the outside of the stairway is formed by longitudinal beams 22, 23, 24, 25, 26 which extend substantially parallel to the course of the formwork surface of the stairway side in question. The side members 22 - 26 are in turn held by vertical supports 28 in height, which stand up from the floor or a corresponding base in the manner of a ceiling support.

Von solchen Längsträgern wird vor allem dann Gebrauch gemacht, wenn an der betreffenden Gebäudeseite eine bereits stehende Gebäudewand vorhanden ist. Dementsprechend könnten also je nach den örtlichen Verhältnissen nicht nur an einer, sondern an beiden Treppenseiten solche Längsträger als Abstützungseinrichtung vorgesehen werden.Such longitudinal beams are used above all when there is an already standing building wall on the relevant building side. Accordingly, depending on the local conditions, such longitudinal beams could be provided as a support device not only on one but on both sides of the stairs.

Die von einem Treppeneck, beim Ausführungsbeispiel die von den Außenecken 6 abgehenden Längsträger 22, 23, 25, 26 verlaufen, wie anschaulich aus Fig. 2 hervorgeht, bogenartig mit einer der Treppenkörper-Unterseite entsprechenden Krümmung, so daß die an den Längsträgern angebrachten Querstreben 17 im wesentlichen von selbst in der richtigen Lage gehalten werden.The longitudinal beams 22, 23, 25, 26 extending from a stair corner, in the exemplary embodiment extending from the outer corners 6, as shown in FIG are essentially held in the correct position by themselves.

Beim Ausführungsbeispiel werden die Querstreben 17 an ihrem der Treppen-Innenseite zugewandten Ende nicht von durchgehenden Längsträgern, sondern jeweils von einem gesonderten Stützelement 29 gehalten. Dieses Stützelement 29 wird an dem an der zugewandten Treppenseite angeordneten Wandelement befestigt, wobei beim Ausführungsbeispiel diese Wandelemente von den Schalelementen 11, 12, 13 gebildet werden, an die die Stützelemente 29 angenagelt oder angeschraubt werden können. Wie im Falle der Längsträger 22 - 26 könnte man auch an beiden Treppenseiten von solchen Stützelementen 29 gebildete Abstützungseinrichtungen vorsehen.In the embodiment, the cross struts 17 on its end facing the inside of the staircase is not held by continuous longitudinal beams, but rather by a separate support element 29. This support element 29 is fastened to the wall element arranged on the facing side of the stairs, in the exemplary embodiment these wall elements being formed by the formwork elements 11, 12, 13 to which the support elements 29 can be nailed or screwed. As in the case of the longitudinal beams 22-26, support devices formed by such support elements 29 could also be provided on both sides of the stairs.

Die Halterung der Querstreben 17 an den Abstützungseinrichtungen kann in verschiedener Weise erfolgen. Zweckmäßigerweise ist vorgesehen, daß die Abstützungseinrichtungen hochstehende Abstützbolzen 30 bzw. 31 od.dgl. aufweisen, auf die die Querstreben 17 aufgesteckt sind.The cross struts 17 can be held on the support devices in various ways. It is expediently provided that the support devices stand up support bolts 30 or 31 or the like. have, on which the cross struts 17 are attached.

Bei den Querstreben 17 mit rohrförmiger Gestalt kann dabei so vorgegangen werden, daß die Abstützbolzen 30 bzw. 31 jeweils durch ein radial gerichtetes Loch 32 bzw. 33 in der Querstrebe bis zur dem Loch entgegengesetzten, geschlossen ausgebildeten Querstrebenwand 34 bzw. 35 gesteckt werden bzw. daß umgekehrt die Querstreben in dieser Weise auf die Abstützbolzen aufgesteckt werden, so daß die Querstreben mit der Querstrebenwand 34 bzw. 35 auf dem jeweils zugewandten Abstützbolzen ruht.In the case of the cross struts 17 having a tubular shape, the procedure can be such that the support bolts 30 or 31 are respectively inserted through a radially directed hole 32 or 33 in the cross strut as far as the closed cross strut wall 34 or 35 opposite the hole. that conversely the cross struts are attached to the support bolts in this way, so that the Cross struts with the cross strut wall 34 or 35 resting on the respectively facing support bolt.

Die Querstreben 17 können zur Feineinstellung ihrer Höhe mit Bezug auf die zugewandte Abstützeinrichtung in der Höhe verstellbar sein. Zu diesem Zwecke kann vorgesehen sein, daß die Abstützbolzen 30 Gewindebolzen sind, die höhenverstellbar an der jeweiligen Abstützeinrichtung, beim Ausführungsbeispiel an den Längsträgern 22 - 26, angeordnet sind. Im dargestellten Falle sind die Querstreben 17 nur an diesen Längsträgern 22 - 26 höhenverstellbar angebracht, während am entgegengesetzten Ende bei den Stützelementen 29 eine solche Höhenverstellmöglichkeit fehlt.The cross struts 17 can be adjustable in height for fine adjustment of their height with reference to the facing support device. For this purpose, it can be provided that the support bolts 30 are threaded bolts, which are arranged on the respective support device, in the exemplary embodiment on the longitudinal beams 22-26, in a height-adjustable manner. In the case shown, the cross struts 17 are only height-adjustable on these longitudinal beams 22 - 26, while at the opposite end of the support elements 29 there is no such height adjustment possibility.

Die Höhenverstellung kann sehr einfach so erfolgen, daß der den jeweiligen Abstützbolzen 30 bildende Gewindebolzen oberhalb und unterhalb des betreffenden Längsträgers 22 - 26 jeweils eine aufgeschraubte Stellmutter 36 bzw. 37 trägt, so daß der Gewindebolzen mit dem gewünschten Überstand nach oben hin an dem betreffenden Längsträger festgespannt werden kann. Bei gelockerten Stellmuttern läßt sich der betreffende Gewindebolzen verdrehen.The height adjustment can be carried out very simply so that the threaded bolt forming the respective support bolt 30 carries a screwed adjusting nut 36 or 37 above and below the respective longitudinal beam 22 - 26, so that the threaded bolt with the desired projection upwards on the relevant longitudinal beam can be clamped. If the adjusting nuts are loosened, the threaded bolt in question can be turned.

Die Abstützbolzen 30 sind durch die Längsträger 22 - 26 hindurchgesteckt. Hierzu weisen die Längsträger in ihrer Längsrichtung nach Art einer Lochreihe verteilte Steckbohrungen 38 auf.The support bolts 30 are through the side members 22-26 put through. For this purpose, the longitudinal members have plug holes 38 distributed in their longitudinal direction in the manner of a row of holes.

Beim Ausführungsbeispiel handelt es sich bei den Stützelementen 29 um plattenähnliche Teile mit einem hakenartig nach oben hin abstehenden Abstützbolzen 31.In the exemplary embodiment, the support elements 29 are plate-like parts with a support bolt 31 which projects upward like a hook.

Diese Unterkonstruktion und dabei deren Querstreben 17 dienen als Unterlage für den Schalungsbelag 15. Dieser weist Matten 39 aus flexiblen Mattengliedern 40, 41 auf, die sich geflechtartig kreuzen und unstarr miteinander verbunden sind. Dabei wird eine Mehrzahl solcher Matten 39, die sich mit ihren Randbereichen überdecken können (siehe Fig. 2 und 5), so auf die Unterkonstruktion gelegt, daß sich eine der Schalfläche 16 entsprechende Bedeckung ergibt. Die Matten 39 weisen Rechteckgestalt auf. Sie können sich auf Grund ihrer Flexibilität ohne weiteres an die Wölbung und Krümmung der von den Querstreben 17 aufgespannten Fläche anpassen. Dabei können sie an den Querstreben 17 insbesondere durch Anbinden mittels eines Drahtstücks od.dgl. befestigt werden (nicht dargestellt).This substructure and thereby its cross struts 17 serve as a base for the formwork covering 15. This has mats 39 made of flexible mat members 40, 41, which cross over each other like braids and are rigidly connected to one another. A plurality of such mats 39, which can overlap with their edge regions (see FIGS. 2 and 5), are placed on the substructure in such a way that a covering corresponding to the formwork surface 16 is obtained. The mats 39 have a rectangular shape. Due to their flexibility, they can easily adapt to the curvature and curvature of the surface spanned by the cross struts 17. They can or the like on the cross struts 17 in particular by connecting using a piece of wire. be attached (not shown).

Die Mattenglieder 40, 41 bilden eine gitterartige Struktur, wobei die parallel zueinander verlaufenden Mattenglieder 40 die anderen Mattenglieder 41, die ebenfalls zueinander parallel sind, rechtwinkelig kreuzen. Da die Mattenglieder 40, 41 an den Kreuzungsstellen 42 unstarr miteinander verbunden sind, können sie hier eine Relativbewegung zueinander ausführen, so daß die Matten in ihrer Ebene formveränderlich sind und insbesondere in eine leicht gebogene Gestalt bringbar sind (Fig. 4). Auf diese Weise können die Matten 39 überall, also auch in den Treppenecken, bis dicht an die angrenzende Wand (Gebäudewände 8, 9, 10; Schalelemente 11, 12, 13) gelegt werden. Aus den Matten 39 läßt sich also die aus Fig. 6 hervorgehende Abwicklungsgestalt 14 erreichen.The mat members 40, 41 form a grid-like structure, the mat members running parallel to one another 40 cross the other mat members 41, which are also parallel to one another, at right angles. Since the mat members 40, 41 are non-rigidly connected to one another at the intersection points 42, they can perform a relative movement here, so that the mats can be changed in shape in their plane and in particular can be brought into a slightly curved shape (FIG. 4). In this way, the mats 39 can be placed anywhere, including in the corners of the stairs, up to the adjacent wall (building walls 8, 9, 10; formwork elements 11, 12, 13). The development shape 14 shown in FIG. 6 can thus be achieved from the mats 39.

Beim dargestellten Ausführungsbeispiel werden die Mattenglieder 40, 41 von wellenförmig verlaufenden Drähten gebildet, so daß ein sogenanntes Wellengitter vorliegt. An den Kreuzungsstellen 42 greifen die Wellungen der Mattenglieder 40, 41 sozusagen ineinander, so daß insofern ein guter ortsfester Zusammenhalt gegeben ist, der jedoch Winkelveränderungen an der Kreuzungsstelle zuläßt. Jedes Mattenglied 40 ist nacheinander abwechslungsweise oberhalb bzw. unterhalb von einem der anderen Mattenglieder 41 hindurchgeführt bzw. umgekehrt, es handelt sich also um einen gewebeartigen Aufbau.In the illustrated embodiment, the mat members 40, 41 are formed by undulating wires, so that a so-called wave grid is present. At the intersection 42, the corrugations of the mat members 40, 41 interlock so to speak, so that there is a good fixed cohesion in this respect, which, however, allows changes in angle at the intersection. Each mat member 40 is successively passed alternately above or below one of the other mat members 41 or vice versa, so it is a fabric-like structure.

Der Klarheit wegen wird darauf hingewiesen, daß die Mattenglieder 40, 41 an den Kreuzungsstellen 42 nicht beispielsweise miteinander punktgeschweißt sind. Sie sind an den Kreuzungsstellen nur durch die sich durch den gewebeartigen Aufbau ergebende elastische Kraft gegeneinander gedrückt.For the sake of clarity, it is pointed out that the mat members 40, 41 are not, for example, spot welded to one another at the intersections 42. They are pressed against each other at the crossing points only by the elastic force resulting from the fabric-like structure.

Die Matten 39 sind so stabil bzw. der Abstand zwischen den Querstreben 17 wird so klein gewählt, daß die Matten 39 nicht zwischen den Querstreben 17 nach unten hin durchhängen.The mats 39 are so stable or the distance between the cross struts 17 is chosen so small that the mats 39 do not sag downward between the cross struts 17.

Bilden die Matten 39 wie beim Ausführungsbeispiel eine durchbrochene Fläche, werden auf das von den Matten dargestellte Mattengebilde die Schalfläche 16 bildende, geschlossene Flächenelemente 43 aus flexiblem Material flächendeckend gelegt. Die Flächenelemente 43 bilden also eine geschlossene Fläche, auf die dann der den Treppenkörper 1 ergebende Beton gegossen wird. Diese Flächenelemente 43 können gummimattenartig sein oder aus folienartigem Kunststoff bestehen. Auch beispielsweise Styroporplatten od.dgl. sind möglich. Dabei können diese Flächenelemente entweder der Abwicklungsgestalt gemäß Fig. 6 entsprechend zugeschnitten sein (in Fig. 6 sind strichpunktiert Trennlinien zwischen solchen Zuschnittsabschnitten angedeutet), oder es handelt sich um eine Anzahl von Flächenelementen, die mit ihren Randbereichen übereinandergelegt werden können, so daß auf ihre Einzelgestalt kein so großer Wert mehr gelegt werden muß.If, as in the exemplary embodiment, the mats 39 form a perforated surface, closed surface elements 43 made of flexible material and forming the formwork surface 16 are placed over the entire surface of the mat structure represented by the mats. The surface elements 43 thus form a closed surface onto which the concrete resulting from the stair body 1 is then poured. These surface elements 43 can be rubber mat-like or consist of film-like plastic. Also, for example, styrofoam plates or the like. are possible. In this case, these surface elements can either be cut according to the development shape according to FIG. 6 (in FIG. 6, dash-dotted lines are dividing lines between such cut sections indicated), or it is a number of surface elements, which can be superimposed with their edge areas, so that no such great value needs to be placed on their individual shape.

Die Flächenelemente 43 bilden also sozusagen die Schalhaut.The surface elements 43 thus form the formwork skin, so to speak.

Anstelle der dargestellten grobmaschigen Matten 39 können in Abwandlung des dargestellten Ausführungsbeispiels die Matten auch aus bandartigen Material streifen als Mattenglieder bestehen, und zwar derart, daß die Matten eine im wesentlichen geschlossene Fläche bilden. Solche Geflechte findet man beispielsweise bei Spankörben usw. In einem solchen Falle könnte man auf die Flächenelemente 43 auch verzichten und die Matten selbst als Schalhaut verwenden.Instead of the coarse-mesh mats 39 shown, in a modification of the exemplary embodiment shown, the mats can also be made of strip-like material as mat members, in such a way that the mats form a substantially closed surface. Such meshes can be found, for example, in chip baskets, etc. In such a case, the surface elements 43 could also be dispensed with and the mats themselves used as formlining.

Nach Fertigstellung des Treppenkörpers 1 wird die Schalung mit den Matten 39 und den Flächenelementen 43 weggenommen, die dann für eine erneute Verwendung wieder zur Verfügung stehen. Eventuelle Unebenheiten in der Treppenkörper-Unterseite werden durch einen aufgebrachten Verputz unsichtbar.After completion of the stair body 1, the formwork with the mats 39 and the surface elements 43 is removed, which are then available again for reuse. Any unevenness in the underside of the stair case becomes invisible due to the plaster applied.

Es versteht sich, daß die beschriebene Schalung nicht nur für um mindestens ein Eck verlaufende Treppen geeignet ist. Prinzipiell läßt sich hiermit jeder Treppenkörper, auch ein linear verlaufender Treppenkörper oder eine kreisrunde Wendeltreppe, schalen.It is understood that the formwork described is not only suitable for stairs running around at least one corner is. In principle, this can be used to form any stair body, including a linear stair body or a circular spiral staircase.

Claims (17)

Vorrichtung zum Errichten einer Schalung für die Unterseite des Treppenkörpers einer Gebäudetreppe, insbesondere einer um mindestens ein Eck verlaufenden Treppe, mit einer Unterkonstruktion und einem von dieser in der Höhe zu haltenden, die Schalfläche bildenden Schalungsbelag, dadurch gekennzeichnet, daß der Schalungsbelag (15) auf die errichtete Unterkonstruktion mit der Schalfläche (16) entsprechender Bedeckung zu legende Matten (39) aus flexiblen Mattengliedern (40, 41) aufweist, die sich geflechtartig kreuzen und unstarr miteinander verbunden sind.Device for erecting a formwork for the underside of the stair body of a building staircase, in particular a staircase running around at least one corner, with a substructure and a formwork covering to be held in height by the formwork surface, characterized in that the formwork covering (15) the erected substructure with the formwork surface (16) corresponding to covering to be laid mats (39) made of flexible mat members (40, 41) which cross like braids and are rigidly connected to each other. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Matten (39) Rechteckgestalt aufweisen.Device according to claim 1, characterized in that the mats (39) have a rectangular shape. Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Matten (39) wellenförmig verlaufende Drähte als Mattenglieder (40, 41) aufweisen.Device according to claim 1 or 2, characterized in that that the mats (39) have undulating wires as mat members (40, 41). Vorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Matten bandartige Materialstreifen als Mattenglieder aufweisen, derart, daß die Matten eine im wesentlichen geschlossene Fläche bilden.Device according to claim 1 or 2, characterized in that the mats have band-like strips of material as mat members, such that the mats form an essentially closed surface. Vorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß auf die Matten (39) flächendeckend legbare, die Schalfläche (16) bildende, geschlossene Flächenelemente (43) aus flexiblem Material vorhanden sind.Device according to one of Claims 1 to 4, characterized in that there are closed surface elements (43) made of flexible material which can be placed on the mats (39) and cover the entire area and form the formwork surface (16). Vorrichtung nach Anspruch 5, dadurch gekennzeichnet, daß die Flächenelemente (43) eine der abgewickelten Schalfläche entsprechende vorgefertigte Kontur aufweisen.Device according to claim 5, characterized in that the surface elements (43) have a prefabricated contour corresponding to the developed form surface. Vorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß die Unterkonstruktion in Treppen-Längsrichtung mit Abstand zueinander aufeinanderfolgende, über die Treppenbreite verlaufende und beidenends nach unten hin durch Abstützeinrichtungen (Längsträger 22 - 26; Vertikalstützen 28; Stützelemente 29) abgestützte Querstreben (17) aufweist.Device according to one of claims 1 to 6, characterized in that the substructure in the longitudinal direction of the stairs at a distance from one another, running across the width of the stairs and downwards at both ends by supporting devices (longitudinal members 22 - 26; vertical supports 28; supporting elements 29) is supported. 17). Vorrichtung nach Anspruch 6, dadurch gekennzeichnet, daß die Querstreben (17) eine stufenlos veränderbare Länge aufweisen.Apparatus according to claim 6, characterized in that the cross struts (17) have a continuously variable length. Vorrichtung nach Anspruch 8, dadurch gekennzeichnet, daß die Querstreben (17) in ihrer jeweiligen Länge feststellbar sind.Apparatus according to claim 8, characterized in that the cross struts (17) can be locked in their respective lengths. Vorrichtung nach einem der Ansprüche 7 bis 9, dadurch gekennzeichnet, daß die Querstreben (17) mindestens mit einem ihrer Enden an sich im wesentlichen parallel zum Verlauf der Schalfläche (16) an der zugewandten Treppenseite in der Höhe erstreckenden Längsträgern (22 - 26) abgestützt sind.Device according to one of claims 7 to 9, characterized in that the cross struts (17) are supported at least with one of their ends essentially parallel to the course of the formwork surface (16) on the facing side of the stairs (22-26) are. Vorrichtung nach Anspruch 10, dadurch gekennzeichnet, daß die Längsträger (22 - 26) in der Höhe haltende, auf den Boden od.dgl. Unterlage stellbare Vertikalstützen (28) vorhanden sind.Apparatus according to claim 10, characterized in that the longitudinal beams (22-26) or the like, which maintain their height, on the floor. Adjustable vertical supports (28) are provided. Vorrichtung nach Anspruch 10 oder 11, dadurch gekennzeichnet, daß die von einem Treppeneck abgehenden Längsträger (22, 23, 25, 26) bogenartig verlaufen.Apparatus according to claim 10 or 11, characterized in that the longitudinal beams (22, 23, 25, 26) extending from a stair corner run in an arc. Vorrichtung nach einem der Ansprüche 7 bis 12, dadurch gekennzeichnet, daß die Querstreben (17) mindestens mit einem ihrer Enden jeweils an einem gesonderten Stützelement (29) abgestützt sind, das an einem an der zugewandten Treppenseite angeordneten Wandelement (Schalelemente 11, 12, 13) in der Höhe befestigbar ist.Device according to one of claims 7 to 12, characterized in that the cross struts (17) are each supported at least with one of their ends on a separate support element (29) which can be attached in height to a wall element (formwork elements 11, 12, 13) arranged on the facing side of the stairs. Vorrichtung nach einem der Ansprüche 7 bis 13, dadurch gekennzeichnet, daß die Abstützeinrichtungen hochstehende Abstützbolzen (30 bzw. 31) aufweisen, auf die die Querstreben (17) aufgesteckt sind.Device according to one of claims 7 to 13, characterized in that the support devices have upstanding support bolts (30 or 31) onto which the cross struts (17) are attached. Vorrichtung nach Anspruch 14, dadurch gekennzeichnet, daß die Querstreben (17) rohrförmige Gestalt aufweisen, wobei die Abstützbolzen (30 bzw. 31) jeweils durch ein radial gerichtetes Loch (32 bzw. 33) in der Querstrebe (17) bis zur dem Loch entgegengesetzten Querstrebenwand (34 bzw. 35) steckbar sind.Device according to claim 14, characterized in that the cross struts (17) have a tubular shape, the support bolts (30 or 31) each through a radially directed hole (32 or 33) in the cross strut (17) as far as the hole opposite Cross strut wall (34 or 35) are pluggable. Vorrichtung nach einem der Ansprüche 7 bis 15, dadurch gekennzeichnet, daß die Querstreben (17) mit Bezug auf die zugewandte Abstützeinrichtung in der Höhe verstellbar sind.Device according to one of claims 7 to 15, characterized in that the height of the cross struts (17) can be adjusted with respect to the facing support device. Vorrichtung nach Anspruch 14 und 16, dadurch gekennzeichnet, daß die Abstützbolzen (30) Gewindebolzen sind, die höhenverstellbar an der jeweiligen Abstützeinrichtung angeordnet sind.Apparatus according to claims 14 and 16, characterized in that the support bolts (30) are threaded bolts which are arranged on the respective support device in a height-adjustable manner.
EP95112494A 1994-08-12 1995-08-09 Device for the erection of a falsework for the underside of a building stair flight Expired - Lifetime EP0696668B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4428577A DE4428577C2 (en) 1994-08-12 1994-08-12 Device for erecting formwork for the underside of the stair frame of a building staircase
DE4428577 1994-08-12

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EP0696668A1 true EP0696668A1 (en) 1996-02-14
EP0696668B1 EP0696668B1 (en) 1998-03-25

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EP95112494A Expired - Lifetime EP0696668B1 (en) 1994-08-12 1995-08-09 Device for the erection of a falsework for the underside of a building stair flight

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AT (1) ATE164415T1 (en)
DE (2) DE4428577C2 (en)

Cited By (3)

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Publication number Priority date Publication date Assignee Title
FR2798153A1 (en) * 1999-09-03 2001-03-09 Bernard Choquet ADJUSTABLE COFFERING SKIN FOR ROTATING OR HELICOIDAL STAIRS
US6810131B2 (en) 2000-01-05 2004-10-26 Canon Kabushiki Kaisha Information processing method and apparatus
FR2960896A1 (en) * 2010-06-08 2011-12-09 Thomas Choquet Device for forming circular staircase, has side compensator fixed to fixed support, where compensator comprises concave cut and convex cut, and mold flexibly supported on compensator and made of flexible material

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004010927B4 (en) * 2004-03-05 2008-02-28 Robert Loibl Method and device for creating, in particular, quarter, half or full cast in-situ concrete stairs

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DE809099C (en) * 1948-04-26 1951-07-23 Rutgers Exploitatie Mij N V Formwork element for molding concrete
DE1684533A1 (en) * 1967-12-19 1970-04-30 Johann Welter Metal cladding for stone stair construction
WO1995004202A1 (en) * 1993-08-02 1995-02-09 Olivier Caverzasio Method for placing forms for a staircase, particularly a curved staircase, and resulting formwork

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DE8615794U1 (en) * 1986-06-12 1986-09-11 Holzapfel, Johannes Georg, 7505 Ettlingen Formwork for the production of spiral precast staircases
FR2706513B1 (en) * 1993-06-09 1996-01-26 Choquet Bernard Turning staircase formwork device and corresponding mounting method.
DE4420849C2 (en) * 1994-06-15 1997-05-22 Clemens Evers Formwork for the substructure of a concrete staircase

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Publication number Priority date Publication date Assignee Title
DE809099C (en) * 1948-04-26 1951-07-23 Rutgers Exploitatie Mij N V Formwork element for molding concrete
DE1684533A1 (en) * 1967-12-19 1970-04-30 Johann Welter Metal cladding for stone stair construction
WO1995004202A1 (en) * 1993-08-02 1995-02-09 Olivier Caverzasio Method for placing forms for a staircase, particularly a curved staircase, and resulting formwork

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2798153A1 (en) * 1999-09-03 2001-03-09 Bernard Choquet ADJUSTABLE COFFERING SKIN FOR ROTATING OR HELICOIDAL STAIRS
WO2001018326A1 (en) * 1999-09-03 2001-03-15 Cofrapid Sarl Adjustable formwork skin for spiral or helical staircase
US6810131B2 (en) 2000-01-05 2004-10-26 Canon Kabushiki Kaisha Information processing method and apparatus
FR2960896A1 (en) * 2010-06-08 2011-12-09 Thomas Choquet Device for forming circular staircase, has side compensator fixed to fixed support, where compensator comprises concave cut and convex cut, and mold flexibly supported on compensator and made of flexible material

Also Published As

Publication number Publication date
DE4428577C2 (en) 1997-07-03
EP0696668B1 (en) 1998-03-25
DE4428577A1 (en) 1996-02-15
DE59501689D1 (en) 1998-04-30
ATE164415T1 (en) 1998-04-15

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