EP0696668B1 - 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
EP0696668B1
EP0696668B1 EP95112494A EP95112494A EP0696668B1 EP 0696668 B1 EP0696668 B1 EP 0696668B1 EP 95112494 A EP95112494 A EP 95112494A EP 95112494 A EP95112494 A EP 95112494A EP 0696668 B1 EP0696668 B1 EP 0696668B1
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EP
European Patent Office
Prior art keywords
mats
cross
ties
formwork
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.)
Expired - Lifetime
Application number
EP95112494A
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German (de)
French (fr)
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EP0696668A1 (en
Inventor
Wolfgang Baumann
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Baumann Verwertungsgesellschaft GmbH
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Baumann Verwertungsgesellschaft GmbH
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Publication of EP0696668A1 publication Critical patent/EP0696668A1/en
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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 erection a formwork for the underside of the stair case Building stairs, especially one around at least one corner running stairs, with a substructure and a of this to be held in height, forming the formwork surface Formwork covering.
  • the present invention is therefore based on the object a device of the type mentioned create an easier and faster shell from Bottom of the stair body on the construction site.
  • Formwork covering on the erected substructure with mats to be laid on the formwork surface corresponding to the covering has flexible mat links that are braided cross and are rigidly connected.
  • Such mats correspond to the flexible mat members bendable without plastic deformation and in itself twistable. Furthermore, due to the rigid connection the mat links at the crossing points Change the surface shape of the mats so that from a in the initial state rectangular mat a total slightly curved mat can be obtained. To this The mats fit in with the appropriate substructure practically automatically the desired course the bottom of the stair case, especially even on a stair corner where you can easily bend one trimmed mat edge needed.
  • the mats do not have to be cut beforehand.
  • the mats can be formed by a so-called wave grid be, that is, they can be wavy Wires exist as mat links. Such Mats are commercially available.
  • the mats can also strip like material have as mat members, such that the mats a form essentially a closed surface.
  • Fig. 1 is a stair body 1 in the building below arranged stairway 2 and one in the next upper Floor arranged stairway 3 emerges. Between the stairs 2 and the stairs 3 runs the stairs at right angles around two corners. In every corner area widen those that form the treads horizontal step surfaces 4 starting from the relevant Inner corner area 5 of the stair body 1 to the outside to the associated Outside corner area 6 out.
  • the individual steps are represented by those with solid lines vertical step surfaces 7 separated from each other.
  • the stair body 1 is cast from concrete. In the drawing the formwork required for this is still attached.
  • the stair body 1 is correspondingly outside Building walls at right angles to each other 8, 9, 10 to which it is cast.
  • the underside of such a stair body 1 runs not step-like, but area-wide throughout, whereby a multi-axis curved surface in each corner area results.
  • the underside of the stair body 1 points in the Processing, for example, the shape 14 shown in FIG. 6 on. It can be seen that in the processing of the inner corners 5 and especially outgoing from the outer corners 6 Edge areas with a curved course result.
  • a corresponding must Formwork on the underside with a formwork covering 15 one of the bottom of the stair case corresponding formwork surface 16 forms.
  • the button surface 16 thus also has the one shown in FIG. 6 in the settlement Figure 14 on.
  • the formwork covering 15 is of a substructure in the height held.
  • This substructure shows in Longitudinal direction of the stairs at a distance from one another, Cross struts running across the stair width 17 on (in Fig. 1, reference numeral 17 is not all Cross struts entered), with their two ends after supported at the bottom by suitable support devices are.
  • the cross struts 17 thus span a surface that runs essentially parallel to the formwork surface 16.
  • the Cross struts 17 advantageously have a stepless changeable length so that it matches the respective stair width and within the same staircase to each Stair area can be adjusted. In the corner areas of the stairs, the cross struts 17 must be a larger one Bridge the route, since they run diagonally here.
  • Embodiment consist of the cross struts 17 for this purpose two strut parts 18 guided telescopically to one another, 19, of which at least the larger diameter one strut part 18 tubular and the other Strut part 19 longitudinally displaceable in the former Strut part 18 is inserted.
  • the respective cross strut length can be determined. This can be done, for example, as shown in FIG. 5 take place that in the one strut part 18 in radial Direction of a locking screw to be operated from the outside 20 is screwed in against the inserted Strut part 19 is screwable and clamps it.
  • the associated with the locking screw 20 on the strut part 18 Tapped hole can be from a welded threaded nut be formed.
  • the stairs are on both sides of fixed building walls could be limited by a detection device for the cross strut length.
  • the stair case is on the inside is limited by the formwork elements 11, 12, 13 however at least some of the cross braces in length be ascertainable so that one can cross struts that on the other hand are attached to the building, at the same time as Use formwork holder for the formwork elements 11, 12, 13 can, if with its end facing this at the respective Formwork element to be attached.
  • Such longitudinal beams are used above all if there is already one on the relevant side of the building standing building wall is present. Accordingly depending on the local conditions, not only on one, but such longitudinal beams on both sides of the stairs be provided as a support device.
  • the cross struts 17 on its end facing the inside of the staircase is not from continuous side members, but each of one separate support member 29 held.
  • This support element 29 is arranged on the facing side of the staircase Wall element attached, being in the embodiment these wall elements from the formwork elements 11, 12, 13 are formed, to which the support elements 29 are nailed or can be screwed on.
  • the side members 22 - 26 could also be seen on both sides of the stairs from such support members 29 formed support means provide.
  • the mounting of the cross struts 17 on the support devices can be done in different ways. Conveniently it is provided that the support devices upstanding support bolts 30 or 31 or the like. exhibit, on which the cross struts 17 are attached.
  • cross struts 17 with a tubular shape can so that the support bolts 30 and 31 each through a radially directed hole 32 and 33 in the cross strut to the opposite of the hole, closed trained cross strut wall 34 and 35 inserted or that conversely the cross struts in this Way to be attached to the support bolt so that the Cross struts with the cross strut wall 34 or 35 on the each facing support pin rests.
  • the cross struts 17 can be used for fine adjustment of their height with reference to the facing support device in the Height adjustable.
  • the support bolts 30 are threaded bolts height adjustable on the respective support device, in the embodiment on the longitudinal beams 22-26, are arranged.
  • the cross struts are 17 height adjustable only on these side members 22 - 26 attached while at the opposite end the support elements 29 such a height adjustment is missing.
  • the height adjustment can be done very simply so that the threaded bolt forming the respective support bolt 30 above and below the relevant side member 22 - 26 each have a screwed adjusting nut 36 or 37 carries so that the threaded bolt with the desired projection clamped upwards on the relevant side member can be. With loosened adjusting nuts the threaded bolt concerned twists.
  • the support bolts 30 are through the side members 22-26 put through.
  • the side members in their Plug holes distributed longitudinally in the manner of a row of holes 38 on.
  • This substructure and its cross struts 17th serve as a base for the formwork covering 15.
  • This has mats 39 made of flexible mat members 40, 41, that cross over each other like braids and are not rigid with each other are connected. A number of such mats 39, which can overlap with their edge areas (see Fig. 2 and 5), so placed on the substructure, that there is a covering corresponding to the form surface 16 results.
  • the mats 39 have a rectangular shape. She can easily join due to their flexibility the curvature and curvature of the spanned by the cross struts 17 Adjust area. You can use the cross braces 17 in particular by connecting using a Wire piece or the like. be attached (not shown).
  • the mat members 40, 41 form a lattice-like structure, the mat links running parallel to each other 40 the other mat members 41, which are also mutually are parallel, cross at right angles. Since the Mat members 40, 41 at the intersection 42 are not rigid are connected to each other, they can make a relative movement here run towards each other so that the mats in their Level are changeable and especially in one slightly curved shape can be brought (Fig. 4). To this The mats 39 can be used anywhere, including in the Stair corners up to the adjacent wall (building walls 8, 9, 10; Formwork elements 11, 12, 13) are placed. From the mats 39 it is possible to see the one shown in FIG Achieve development form 14.
  • the mat members 40, 41 formed by undulating wires, so that there is a so-called wave grid.
  • the mat members 40, 41 formed by undulating wires, so that there is a so-called wave grid.
  • Each Mat member 40 is alternately above or passed under one of the other mat members 41 or vice versa, so it is one fabric-like structure.
  • Mat members 40, 41 not at the intersection 42 are spot welded together. They are at the crossing points only by the through the tissue-like The resulting elastic force against each other pressed.
  • the mats 39 are stable or the distance between the Cross struts 17 is chosen so small that the mats 39th do not sag downwards between the cross struts 17.
  • Form the mats 39 as in the embodiment openwork area are shown on the mat Mat structures forming the formwork surface 16, closed Surface elements 43 made of flexible material laid across the board.
  • the surface elements 43 thus form a closed surface, on which then the stair body 1 resulting concrete is poured.
  • These surface elements 43 can be rubber mat-like or made of film-like Plastic. Also, for example, polystyrene panels or the like. are possible.
  • These surface elements can either the development form according to FIG. 6 be cut accordingly (dash-dotted lines in FIG. 6) Dividing lines between such cutting sections indicated), or it is a Number of surface elements with their border areas can be placed one on top of the other so that their individual shape no such great value needs to be placed anymore.
  • the surface elements 43 thus form the formwork skin, so to speak.
  • Mats made of tape-like material also strip as mat links exist, in such a way that the mats one in form an essentially closed surface.
  • Such braids can be found for example in chip baskets etc. In one such cases could also be applied to the surface elements 43 do without and use the mats themselves as formlining.

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 erection a formwork for the underside of the stair case Building stairs, especially one around at least one corner running stairs, with a substructure and a of this to be held in height, forming the formwork surface Formwork covering.

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. Become the conventional formwork of such stair bodies Wooden boards or the like used on site accordingly be fitted and tailored. This is before very time-consuming, especially with such stairs, those without education of a pedestal run around a corner. Such stairs is often found primarily as basement stairs. With such Stairs take the step width from the inside corner to Outside corner towards what is uneven and in different Curvature of the underside of the stairs towards the Consequence.

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 a device of the type mentioned create an easier and faster shell from Bottom 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 mats to be laid on the formwork surface corresponding to the covering has flexible mat links that are braided cross and are rigidly connected.

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 correspond to the flexible mat members bendable without plastic deformation and in itself twistable. Furthermore, due to the rigid connection the mat links at the crossing points Change the surface shape of the mats so that from a in the initial state rectangular mat a total slightly curved mat can be obtained. To this The mats fit in with the appropriate substructure practically automatically the desired course the bottom of the stair case, especially even on a stair corner where you can easily bend one trimmed mat edge needed.

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 if you have a number of smaller mats available and then overlap these mats Marginal 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 be, that is, they can be wavy Wires exist as mat links. 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 strip like material have as mat members, such that the mats a form essentially a 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 are not essentially closed Form area, it is necessary that on the Mats that can be laid across the entire area and that form the formwork surface closed surface elements made of flexible material available are. These surface elements can consist of rubber, However, it could also be plastic film or are polystyrene sheets.

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 also essentially mats forming a closed surface hang up. But with these mats it is too in principle possible 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, that is, they can be reused Completing a staircase can be taken away and stand then available again for further formwork. In contrast are the conventional approach fitted boards regularly lost parts.

Weitere zweckmäßige Ausgestaltungen der Erfindung sind in den Unteransprüchen angegeben.Further expedient embodiments of the invention are in 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 located 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.From Fig. 1 is a stair body 1 in the building below arranged stairway 2 and one in the next upper Floor arranged stairway 3 emerges. Between the stairs 2 and the stairs 3 runs the stairs at right angles around two corners. In every corner area widen those that form the treads horizontal step surfaces 4 starting from the relevant Inner corner area 5 of the stair body 1 to the outside to the associated Outside corner area 6 out. The individual steps are represented by those with solid lines vertical step surfaces 7 separated from each other.

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 correspondingly outside Building walls at right angles to each other 8, 9, 10 to which it is cast. At the Corresponding formwork elements 11 on the inside of the stairs 12, 13 set up here the corresponding course of the stairs peel.

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 stair body 1 runs not step-like, but area-wide throughout, whereby a multi-axis curved surface in each corner area results. The underside of the stair body 1 points in the Processing, for example, the shape 14 shown in FIG. 6 on. It can be seen that in the processing of the inner corners 5 and especially outgoing from the outer corners 6 Edge areas with a curved course result.

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 with a formwork covering 15, one of the bottom of the stair case corresponding formwork surface 16 forms. The button surface 16 thus also has the one shown in FIG. 6 in the settlement Figure 14 on.

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 of a substructure in the height held. This substructure shows in Longitudinal direction of the stairs at a distance from one another, Cross struts running across the stair width 17 on (in Fig. 1, reference numeral 17 is not all Cross struts entered), with their two ends after supported at the bottom by suitable support devices are. The cross struts 17 thus span a surface that runs essentially parallel to the formwork surface 16. The Cross struts 17 advantageously have a stepless changeable length so that it matches the respective stair width and within the same staircase to each Stair area can be adjusted. In the corner areas of the stairs, the cross struts 17 must be a larger one Bridge the route, since they run diagonally here. At the Embodiment consist of the cross struts 17 for this purpose two strut parts 18 guided telescopically to one another, 19, of which at least the larger diameter one strut part 18 tubular and the other Strut part 19 longitudinally displaceable in the former Strut part 18 is inserted.

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 be done, for example, as shown in FIG. 5 take place that in the one strut part 18 in radial Direction of a locking screw to be operated from the outside 20 is screwed in against the inserted Strut part 19 is screwable and clamps it. The associated with the locking screw 20 on the strut part 18 Tapped hole can be from a welded threaded nut be formed.

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 stairs are on both sides of fixed building walls could be limited by a detection device for the cross strut length. In the embodiment , where the stair case is on the inside is limited by the formwork elements 11, 12, 13 however at least some of the cross braces in length be ascertainable so that one can cross struts that on the other hand are attached to the building, at the same time as Use formwork holder for the formwork elements 11, 12, 13 can, if with its end facing this at the respective Formwork element to be attached.

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, that on the outside of the stairs existing support device by itself in essentially parallel to the course of the formwork surface relevant side of the stair extending along in height Side members 22, 23, 24, 25, 26 are formed. The side members 22 - 26 are in turn supported by vertical 28 held at height by the ground or equivalent Stand up 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 if there is already one on the relevant side of the building standing building wall is present. Accordingly depending on the local conditions, not only on one, but such longitudinal beams on both sides of the stairs be provided as a support device.

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 of a stair corner, in the embodiment that of the longitudinal beams 22, 23, 25, 26 which go out the outer corners 6 run as shown in FIG. 2, arch-like with one corresponding to the bottom of the stair case Curvature so that the attached to the side members Cross struts 17 essentially by themselves in the correct one Able to be held.

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 from continuous side members, but each of one separate support member 29 held. This support element 29 is arranged on the facing side of the staircase Wall element attached, being in the embodiment these wall elements from the formwork elements 11, 12, 13 are formed, to which the support elements 29 are nailed or can be screwed on. As in the case of the side members 22 - 26 could also be seen on both sides of the stairs from such support members 29 formed support means provide.

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 mounting of the cross struts 17 on the support devices can be done in different ways. Conveniently it is provided that the support devices upstanding support bolts 30 or 31 or the like. exhibit, 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 cross struts 17 with a tubular shape can so that the support bolts 30 and 31 each through a radially directed hole 32 and 33 in the cross strut to the opposite of the hole, closed trained cross strut wall 34 and 35 inserted or that conversely the cross struts in this Way to be attached to the support bolt so that the Cross struts with the cross strut wall 34 or 35 on the each facing support pin rests.

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 used for fine adjustment of their height with reference to the facing support device in the Height adjustable. For this purpose can be provided be that the support bolts 30 are threaded bolts height adjustable on the respective support device, in the embodiment on the longitudinal beams 22-26, are arranged. In the case shown, the cross struts are 17 height adjustable only on these side members 22 - 26 attached while at the opposite end the support elements 29 such a height adjustment is missing.

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 done very simply so that the threaded bolt forming the respective support bolt 30 above and below the relevant side member 22 - 26 each have a screwed adjusting nut 36 or 37 carries so that the threaded bolt with the desired projection clamped upwards on the relevant side member can be. With loosened adjusting nuts the threaded bolt concerned twists.

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 side members in their Plug holes distributed longitudinally in the manner of a row of holes 38 on.

Beim Ausführungsbeispiel handelt es sich bei den Stützelementen 29 um plattenähnliche Teile mit einem hakenartig nach oben hin abstehenden Abstützbolzen 31.In the embodiment, the support elements 29 around plate-like parts with a hook-like support bolts 31 projecting upwards.

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 its cross struts 17th serve as a base for the formwork covering 15. This has mats 39 made of flexible mat members 40, 41, that cross over each other like braids and are not rigid with each other are connected. A number of such mats 39, which can overlap with their edge areas (see Fig. 2 and 5), so placed on the substructure, that there is a covering corresponding to the form surface 16 results. The mats 39 have a rectangular shape. she can easily join due to their flexibility the curvature and curvature of the spanned by the cross struts 17 Adjust area. You can use the cross braces 17 in particular by connecting using a Wire piece or the like. 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 lattice-like structure, the mat links running parallel to each other 40 the other mat members 41, which are also mutually are parallel, cross at right angles. Since the Mat members 40, 41 at the intersection 42 are not rigid are connected to each other, they can make a relative movement here run towards each other so that the mats in their Level are changeable and especially in one slightly curved shape can be brought (Fig. 4). To this The mats 39 can be used anywhere, including in the Stair corners up to the adjacent wall (building walls 8, 9, 10; Formwork elements 11, 12, 13) are placed. From the mats 39 it is possible to see the one shown in FIG Achieve development form 14.

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 formed by undulating wires, so that there is a so-called wave grid. On the corrugations of the mat members engage at the intersection points 42 40, 41, so to speak, into one another, so that in this respect good fixed cohesion is given, however Allows changes in angle at the intersection. Each Mat member 40 is alternately above or passed under one of the other mat members 41 or vice versa, so it is one 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 not at the intersection 42 for example, are spot welded together. they are at the crossing points only by the through the tissue-like The resulting elastic force against each other pressed.

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 stable or the distance between the Cross struts 17 is chosen so small that the mats 39th do not sag downwards 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.Form the mats 39 as in the embodiment openwork area, are shown on the mat Mat structures forming the formwork surface 16, closed Surface elements 43 made of flexible material laid across the board. The surface elements 43 thus form a closed surface, on which then the stair body 1 resulting concrete is poured. These surface elements 43 can be rubber mat-like or made of film-like Plastic. Also, for example, polystyrene panels or the like. are possible. These surface elements can either the development form according to FIG. 6 be cut accordingly (dash-dotted lines in FIG. 6) Dividing lines between such cutting sections indicated), or it is a Number of surface elements with their border areas can be placed one on top of the other so that their individual shape no such great value needs to be placed anymore.

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 illustrated embodiment Mats made of tape-like material also strip as mat links exist, in such a way that the mats one in form an essentially closed surface. Such braids can be found for example in chip baskets etc. In one such cases could also be applied to the surface elements 43 do without and use the mats themselves 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 removed with the mats 39 and the surface elements 43, which are then available for reuse stand. Any unevenness in the bottom of the stair case become invisible when plaster is applied.

Es versteht sich, daß die beschriebene Schalung nicht nur für um mindestens ein Eck verlaufende Treppen geeignet ist. Hiermit läßt sich 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. With this, every stair body, also a linear stair case or a circular spiral staircase, bowls.

Claims (17)

  1. Apparatus for the erection of formwork for the underside of the stairway of a building staircase, in particular a staircase running round one or more corners, with a sub-structure and a formwork covering forming the contact area and to be held upright by the sub-structure, characterized in that the formwork covering (15) has mats (39) of flexible mat elements (40, 41) for placing on the erected sub-structure with the covering corresponding to the contact area (16), and which intersect in a weave-like manner and are non-rigidly joined together.
  2. Apparatus according to claim 1, characterized in that the mats (39) are rectangular in shape.
  3. Apparatus according to claim 1 or 2, characterized in that the mats (39) have wavy wires as mat elements (40, 41).
  4. Apparatus according to claim 1 or 2, characterized in that the mats have ribbon-like strips of material as mat elements, such that the mats form an essentially continuous surface.
  5. Apparatus according to any of claims 1 to 4, characterized in that there are self-contained flat elements (43) of flexible material which can be laid on the mats, covering their entire surface and forming the contact area (16).
  6. Apparatus according to claim 5, characterized in that the flat elements (43) have a prefabricated contour corresponding to the wound contact area.
  7. Apparatus according to any of claims 1 to 6, characterized in that the sub-structure, in the longitudinal direction of the staircase, has cross-ties (17) spaced apart consecutively, extending across the width of the stairs and supported underneath at both ends by support fixtures, e.g. longitudinal beams (22 - 26), vertical struts (28) or support elements (29).
  8. Apparatus according to claim 6, characterized in that the cross-ties (17) are infinitely adjustable in length.
  9. Apparatus according to claim 8, characterized in that the chosen length of the cross-ties (17) can be fixed.
  10. Apparatus according to any of claims 7 to 9, characterized in that at least one end of the cross-ties (17) is supported by a longitudinal beam (22 - 26) extending upwards essentially parallel to the course of the contact area (16) on the opposite side of the staircase.
  11. Apparatus according to claim 10, characterized in that there are vertical struts (28), adjustable on the floor or similar base, holding up the longitudinal beams (22 - 26).
  12. Apparatus according to claim 10 or 11, characterized in that the longitudinal beams (22, 23, 25, 26) extending away from a staircase corner are curved.
  13. Apparatus according to any of claims 7 to 12, characterized in that at least one end of the cross-ties (17) is supported by a special support element (29), which may be fixed in height on a wall element, e.g. formwork elements (11, 12, 13), located on the opposite side of the staircase.
  14. Apparatus according to any of claims 7 to 13, characterized in that the support fixtures have support pins (30 and 31 respectively) extending upwards, on to which the cross-ties (17) are fitted.
  15. Apparatus according to claim 14, characterized in that the cross-ties (17) are tubular in shape, while the support pins (30 and 31 respectively) may each be inserted through a radially-aligned hole (32 and 33 respectively) in the cross-tie (17) up to the cross-tie wall (34 and 35 respectively) opposite the hole.
  16. Apparatus according to any of claims 7 to 15, characterized in that the cross-ties (17) are adjustable in height relative to the opposite support fixture.
  17. Apparatus according to claims 14 and 16, characterized in that the support pins (30) are threaded pins, fitted on to the respective support fixture so as to be height-adjustable.
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

Publications (2)

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

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Application Number Title Priority Date Filing Date
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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EP (1) EP0696668B1 (en)
AT (1) ATE164415T1 (en)
DE (2) DE4428577C2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2798153B1 (en) * 1999-09-03 2001-11-23 Bernard Choquet ADJUSTABLE SHOWER SKIN FOR TURNING OR HELICOIDAL STAIRS
US6810131B2 (en) 2000-01-05 2004-10-26 Canon Kabushiki Kaisha Information processing method and apparatus
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
FR2960896B1 (en) * 2010-06-08 2017-07-14 Thomas Choquet METHOD AND APPARATUS FOR RAPID ROTARY STAIR FORMWORK USING COMPENSATORS

Family Cites Families (6)

* Cited by examiner, † Cited by third party
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
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.
FR2708651B1 (en) * 1993-08-02 1995-10-13 Caverzasio Olivier Formwork process for a spiral staircase and formwork made using this process.
DE4420849C2 (en) * 1994-06-15 1997-05-22 Clemens Evers Formwork for the substructure of a concrete staircase

Also Published As

Publication number Publication date
DE4428577C2 (en) 1997-07-03
EP0696668A1 (en) 1996-02-14
DE59501689D1 (en) 1998-04-30
DE4428577A1 (en) 1996-02-15
ATE164415T1 (en) 1998-04-15

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