EP1266108A1 - Adjustable formwork skin for spiral or helical staircase - Google Patents

Adjustable formwork skin for spiral or helical staircase

Info

Publication number
EP1266108A1
EP1266108A1 EP00960780A EP00960780A EP1266108A1 EP 1266108 A1 EP1266108 A1 EP 1266108A1 EP 00960780 A EP00960780 A EP 00960780A EP 00960780 A EP00960780 A EP 00960780A EP 1266108 A1 EP1266108 A1 EP 1266108A1
Authority
EP
European Patent Office
Prior art keywords
skin
formwork
spacing
underside
wall according
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.)
Withdrawn
Application number
EP00960780A
Other languages
German (de)
French (fr)
Inventor
Bernard Choquet
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.)
Choquet Bernard
Original Assignee
Cofrapid Sarl
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
Application filed by Cofrapid Sarl filed Critical Cofrapid Sarl
Publication of EP1266108A1 publication Critical patent/EP1266108A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G13/00Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills
    • E04G13/06Falsework, 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
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04GSCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
    • E04G13/00Falsework, forms, or shutterings for particular parts of buildings, e.g. stairs, steps, cornices, balconies foundations, sills
    • E04G13/06Falsework, 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
    • E04G13/062Falsework, 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
    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04FFINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F11/00Stairways, ramps, or like structures; Balustrades; Handrails
    • E04F11/02Stairways; Layouts thereof
    • E04F2011/0203Miscellaneous features of stairways not otherwise provided for
    • E04F2011/0205Stairways characterised by the use of specific materials for the supporting structure of the treads
    • E04F2011/021Stairways characterised by the use of specific materials for the supporting structure of the treads mainly of stone or stone like materials, e.g. concrete; mainly of glass
    • E04F2011/0212Stairways characterised by the use of specific materials for the supporting structure of the treads mainly of stone or stone like materials, e.g. concrete; mainly of glass mainly of concrete
    • E04F2011/0214Stairways characterised by the use of specific materials for the supporting structure of the treads mainly of stone or stone like materials, e.g. concrete; mainly of glass mainly of concrete cast in situ

Definitions

  • FR-A-2 708 651 To make the interior shuttering face of a spiral staircase, a method is known (FR-A-2 708 651) using a plate suitable for warping which is stiffened by applying a layer of polymerizable material.
  • this plate is made of thermoformable material
  • the plate is then coated with resin loaded with glass fibers
  • This formwork wall can extend in two substantially orthogonal flexible directions in arrows 1 'from a median 14
  • This formwork wall has the particularity that the angular part 4 of the rigid structure 2 has a partition 9 making it possible to lock the end of a spreading 15 which closes with a key 10 thus securing the shoring 15 and the structure 2

Landscapes

  • 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)

Abstract

The invention concerns a formwork wall with variable geometry for producing the lower surface of a spiral or helical concrete staircase. The invention is characterised in that it comprises: a deformable formwork skin (1) associated at the underside with a rigid and integral support structure (2) in its angular portion (4) to be spaced away therefrom in the wings (5) thereby producing an adjusting space and, means (3) for modifying the spacing between the structure (2) and the skin (1) such as screw jack (3)/captive nut type actuators which as they evolve force the skin (1) to be deformed by being supported at the tip (2') of the wings of the rigid structure (2).

Description

PEAU COFFRANTE REGLABLE POUR ESCALIER TOURNANT OU HELICOÏDALADJUSTABLE SHOWER SKIN FOR TURNING OR HELICOIDAL STAIRS
L'invention se rapporte à une paroi coffrante pour la réalisation de la face inférieure d'un escalier tournant en bétonThe invention relates to a shuttering wall for the realization of the underside of a concrete staircase
La mise en place d'escalier en béton dans les immeubles se fait selon deux principesThe installation of concrete stairs in buildings is done according to two principles
Le premier de ces principes consiste à réaliser en usine des escaliers préfabriqués dans un moule approprié et ensuite les transporter sur place pour les poserThe first of these principles consists of making prefabricated staircases in the factory in an appropriate mold and then transporting them on site to install them.
Cette technique n'a d'intérêt que pour la construction d'immeubles standardisésThis technique is only of interest for the construction of standardized buildings
Pour amortir le coût du moule, du transport et de la location de l'engin de levage, il faut devoir réaliser un nombre minimum d'escaliers identiques ce qui n'est pas souvent le casTo amortize the cost of the mold, transport and rental of the lifting device, it is necessary to make a minimum number of identical stairs which is not often the case
Le second principe consiste à édifier, sur place, un coffrage dans lequel sera coulé directement le béton, le coffrage étant retiré après prise et solidification du bétonThe second principle consists in building, on site, a formwork in which the concrete will be poured directly, the formwork being removed after setting and solidification of the concrete
Ce coffrage comprend plusieurs parois coffrantes pour la face inférieure, les faces latérales et les contremarches de l'escalierThis formwork includes several formwork walls for the underside, the side faces and the risers of the staircase
Ces parois coffrantes sont le plus généralement constituées par assemblage de planches de bois, disposées bord à bord, et supportées par une structure en bois et/ou en métalThese formwork walls are most generally formed by assembling wooden planks, arranged edge to edge, and supported by a wooden and / or metal structure.
La réalisation de ces coffrages est extrêmement longue et nécessite de la part du coffreur une dextérité qu il est difficile d'acquérir rapidementThe realization of these forms is extremely long and requires from the formworker a dexterity which is difficult to acquire quickly
La face inférieure de l'escalier tournant est généralement une surface courbe gaucheThe underside of the spiral staircase is usually a left curved surface
Pour réaliser la face coffrante intérieure d'un escalier tournant, on connaît un procédé (FR-A-2 708 651 ) mettant en oeuvre une plaque se prêtant au gauchissement qu on rigidifie en appliquant une couche de matériau polyméπsableTo make the interior shuttering face of a spiral staircase, a method is known (FR-A-2 708 651) using a plate suitable for warping which is stiffened by applying a layer of polymerizable material.
Pour sa mise en forme, cette plaque est en matériau thermoformableFor its shaping, this plate is made of thermoformable material
Pour sa mise en place, on utilise un support provisoire fait de treillis ou traverses portes par des étais ou fixés provisoirement au mur Sur ce treillis on pose la plaque que I on met en forme au moyen d un générateur d air chaudFor its installation, use is made of a temporary support made of trellis or door rails by props or temporarily fixed to the wall. On this trellis we place the plate which I shape by means of a hot air generator
On procède ensuite à un revêtement de la plaque à I aide de résine chargée de fibres de verreThe plate is then coated with resin loaded with glass fibers
Un film de polyuréthane est ensuite déposé sur l'ensembleA polyurethane film is then deposited on the assembly
Après utilisation, cette paroi coffrante n'est plus réutilisable dans une configuration différenteAfter use, this formwork wall can no longer be reused in a different configuration
On connaît aussi un autre procédé (DE 16 84 476 A) mettant en oeuvre plusieurs plaques qui se superposent plus ou moins, en fonction du gauchissement dirigé par une structure porteuse qui se trouve au-dessusAnother method is also known (DE 16 84 476 A) using several plates which more or less overlap, depending on the warpage directed by a supporting structure which is located above
Cette structure nécessite la présence de murs latéraux pour être fixée et traverse le béton par des tendeurs pour suspendre les plaques de coffrage de sous- face de l'escalier Ces tendeurs laissent des trous dans le béton après décoffrageThis structure requires the presence of side walls to be fixed and passes through the concrete with tensioners to suspend the shuttering plates on the underside of the staircase These tensioners leave holes in the concrete after formwork removal
Par ailleurs la sous-face étant réalisée par plusieurs plaques superposées la qualité de finition du béton est très médiocreIn addition, the underside being produced by several superimposed plates, the quality of the concrete finish is very poor.
Un des résultats que l'invention vise à obtenir est une paroi coffrante qui facilite la construction d'escalier et qui soit également réutilisableOne of the results which the invention aims to obtain is a formwork wall which facilitates the construction of stairs and which is also reusable
A cet effet, l'invention a pour objet une paroi coffrante, pour la réalisation de la face inférieure d'un escalier tournant en béton cette paroi coffrante se prêtant au gaucnissement, cette paroi coffrante étant caractérisée en ce qu elle comprendTo this end, the subject of the invention is a formwork wall, for the production of the underside of a concrete turning staircase, this formwork wall suitable for warping, this formwork wall being characterized in that it comprises
- une peau coffrante 1 deformable associée en sous-face à une structure 2 porteuse rigide,- a deformable formwork skin 1 associated on the underside with a rigid support structure 2,
- des moyens 3 de modification de l'écartement entre la peau 1 coffrante et la structure 2 porteuse de manière à lui faire prendre la forme gauche souhaitée- Means 3 for modifying the spacing between the formwork skin 1 and the supporting structure 2 so as to make it take the desired left shape
L'invention sera bien comprise à l'aide de la description ci-après faite à titre d'exemple non limitatif, en regard du dessin ci-annexé qui représente schématiquementThe invention will be better understood with the aid of the description below given by way of nonlimiting example, with reference to the attached drawing which schematically represents
- figure 1 une vue de dessous d'une paroi coffrante,- Figure 1 a bottom view of a formwork wall,
- figure 2 en coupe, une paroi coffrante et la structure porteuse- Figure 2 in section, a formwork wall and the supporting structure
En se reportant au dessin, on voit un coffrage pour la réalisation d'un escalier tournantReferring to the drawing, we see a formwork for the realization of a spiral staircase
Cet escalier est érigé dans un coin de I immeubleThis staircase is erected in a corner of the building
Classiquement, ce coffrage comprend notamment une paroi coffrante pour la face inférieure de I escalier tournant Classiquement, cette paroi coffrante se prête au gauchissement Selon une caractéristique de l'invention cette paroi coffrante comprendConventionally, this formwork includes in particular a formwork wall for the underside of the turning staircase Conventionally, this formwork wall is suitable for warping. According to a characteristic of the invention, this formwork wall comprises
- une peau 1 coffrante deformable associée à une structure 2 porteuse rigide,- a deformable formwork skin 1 associated with a rigid support structure 2,
- des moyens 3 de modification de l'écartement entre la peau 1 coffrante et la structure 2 porteuse de manière à lui faire prendre la forme gauche souhaitée- Means 3 for modifying the spacing between the formwork skin 1 and the supporting structure 2 so as to make it take the desired left shape
Un des avantages de cette structure 2 est qu'au moins une partie de la peau 1 de coffrage est solidaire de la structure 2 d'où une mise en place plus rapide et plus facileOne of the advantages of this structure 2 is that at least a part of the formwork skin 1 is integral with the structure 2, hence a faster and easier installation.
Par ailleurs, le gauchissement est réglable d'où une utilisation ultérieure de la paroi coffrante dans une configuration différenteFurthermore, the warping is adjustable, hence a subsequent use of the formwork wall in a different configuration.
La peau 1 coffrante s'étend selon deux directions sensiblement orthogonales à la manière d'un L et la structure 2 comprendraThe formwork skin 1 extends in two directions substantially orthogonal in the manner of an L and the structure 2 will include
- une partie anguleuse 4 solidarisée par un écrou 5 à la sous-face opposée de la peau 1 coffrante en son centre pour en πgidifier la médiane 14- An angular part 4 secured by a nut 5 to the opposite underside of the formwork skin 1 in its center to πgidify the median 14
- de chaque côté de cette partie anguleuse 4 des ailes 2' qui s'éloignent avec constance de la peau 1 créant ainsi un espace de réglage- on each side of this angular part 4 of the wings 2 'which steadily move away from the skin 1 thus creating an adjustment space
C'est notamment à l'extrémité de ces ailes 2' que sont disposés les moyens 3 de modification de l'écartementIt is in particular at the end of these wings 2 ′ that the means 3 for modifying the spacing are arranged.
En effet le gauchissement est rendu maximal en agissant sur les extrémités de la peau 1 coffrante que I on oblige à se rapprocher ou à s éloigner du bout des ailes 2' de la structure créant ainsi une courbure plus ou moins accentuéeIndeed the warping is made maximum by acting on the ends of the formwork skin 1 that I force to approach or move away from the end of the wings 2 'of the structure thus creating a more or less accentuated curvature
Les moyens 3 de modification de l'écartement sont des vérins, par exemple, mécaniques tel un système vis/écrou 6 prisonnier ou éventuellement mais plus rarement des vérins hydrauliques ou un système tubulaire coulissant avec goupille de blocageThe means 3 for modifying the spacing are, for example, mechanical jacks such as a captive screw / nut system 6 or possibly but more rarely hydraulic jacks or a sliding tubular system with locking pin
Dans le cas d'un système vis/écrou 6, l'écrou est prisonnier et solidarisé à la structure 2 avec toutefois un minimum de jeu pour compenser la variation d'angleIn the case of a screw / nut system 6, the nut is trapped and secured to the structure 2 with, however, a minimum of play to compensate for the angle variation
Une extrémité des moyens de modification d'écartement est un axe 7 de rotation, de type rotule ou goupille ou serre clips, prisonnier dans une cage 8 qui est solidarisée à la sous-face de la peau 1 coffranteOne end of the spacing modification means is an axis of rotation 7, of the ball-joint or pin or clip type, trapped in a cage 8 which is secured to the underside of the formwork skin 1
Cet axe 7 de rotation permet d'adapter sans contrainte l'angle des moyens 3 de modification d'écartement au besoin de leur progressionThis axis of rotation 7 makes it possible to adapt without constraint the angle of the means 3 for modifying the spacing to the need for their progression.
Dans la structure 2 au niveau de la partie anguleuse 4, approximativement parallèle à la surface de la peau se trouve une cloison 9 encochée pour permettre à une tête d'étai 15 de s encastrer entre la-dite cloison 9 et la partie de la structure 2 solidaire à la sous-face de la peau 1 coffranteIn the structure 2 at the level of the angular part 4, approximately parallel to the surface of the skin, there is a partition 9 notched to allow a forestay head 15 to fit between said partition 9 and the part of the structure 2 secured to the underside of the formwork skin 1
Cette cloison 9 encochée peut être verrouillée par une clavette 10 qui solidarise l'étai et la structure 2 de façon à faciliter la mise en place de l'ensemble et notamment le réglage verticalThis notched partition 9 can be locked by a key 10 which secures the forestay and the structure 2 so as to facilitate the positioning of the assembly and in particular the vertical adjustment.
Les moyens 3 de modification d'écartement peuvent être multiples soit sur la longueur des ailes soit en bout d'ailes 2' afin d'assurer un meilleur réglage horizontal en fonction de la taille de l'escalierThe spacing modification means 3 can be multiple either over the length of the wings or at the end of the wings 2 ′ in order to ensure better horizontal adjustment as a function of the size of the staircase
La sous-face de la peau 1 est équipée transversalement sur les bords latéraux de tubes fixes 11 dans lesquels peuvent coulisser d'autres tubes 12 à l'extrémité desquels est fixée une peau 13 coffrante souple auxiliaire qui se superpose en partie à la peau 1 principale et vient par déplacement latéral agrandir la surface coffrante aux besoins de l'ouvrageThe underside of the skin 1 is fitted transversely on the lateral edges with fixed tubes 11 in which other tubes 12 can slide, at the end of which is fixed an auxiliary flexible shuttering skin 13 which is partially superimposed on the skin 1 main and by lateral displacement enlarge the formwork surface to the needs of the structure
Selon des modes particuliers de réalisation - une paroi coffrante à géométrie variable pour la réalisation de la face inférieure d'un escalier tournant ou hélécoidal en béton se prêtant au gauchissement et comprenant notammentAccording to particular embodiments - a formwork wall of variable geometry for the realization of the underside of a spiral or helical staircase made of concrete suitable for warping and comprising in particular
* une peau 1 coffrante deformable associée en sous-face à une structure 2 porteuse rigide et* a deformable formwork skin 1 associated on the underside with a rigid support structure 2 and
* des moyens 3 de modification de I écartement entre la sous-face de la peau 1 coffrante et la structure 2 porteuse de manière à infléchir la-dite peau 1 et à lui faire prendre la forme gauche souhaitée * means 3 for modifying the spacing between the underside of the formwork skin 1 and the supporting structure 2 so as to deflect said skin 1 and make it take the desired left shape
- cette paroi coffrante peut s'étendre selon deux directions sensiblement orthogonales flexibles en flèches 1 ' à partir d'une médiane 14- This formwork wall can extend in two substantially orthogonal flexible directions in arrows 1 'from a median 14
- cette paroi coffrante a pour particularité que la structure 2 porteuse rigide peut être en forme de L- this formwork wall has the particularity that the rigid supporting structure 2 can be L-shaped
* dont la partie anguleuse 4 est solidarisée par un écrou 5 à la sous- face de la peau 1 coffrante en son centre pour en πgidifier la médiane 14* whose angular part 4 is secured by a nut 5 to the underside of the formwork skin 1 at its center to πgidify the median 14
* dont les ailes 2' s'éloignent avec constance de la peau 1 et aux extrémités desquelles se situent les moyens 3 de modification d'écartement* whose wings 2 'steadily move away from the skin 1 and at the ends of which are located the means 3 for modifying the spacing
- cette paroi coffrante a pour particularité que les moyens 3 d'écartement peuvent être des vérins- This formwork wall has the particularity that the spacing means 3 can be jacks
- cette paroi coffrante a pour particularité que les moyens 3 d'écartement peuvent être des vérins mécaniques - cette paroi coffrante a pour particularité que les moyens 3 de modification d'écartement peuvent avoir un système 6 de blocage solidaire de la structure 2 rigide pour arrêter I espace entre la sous-face de la peau 1 coffrante et la structure 2 porteuse aux besoins de l'ouvrage- This formwork wall has the particularity that the spacing means 3 can be mechanical jacks - This formwork wall has the particularity that the means 3 for modifying the spacing may have a blocking system 6 secured to the rigid structure 2 to stop the space between the underside of the formwork skin 1 and the supporting structure 2 as required. of the book
- cette paroi coffrante a pour particularité que l'une des extrémités des moyens 3 de modification d'écartement a un axe 7 de rotation prisonnier dans une cage 8 solidarisée à la sous-face de la peau 1 coffrante qui permet de suivre la variation d'angle lors de la modification d'écartement- This formwork wall has the particularity that one of the ends of the means 3 for modifying the spacing has an axis 7 of rotation trapped in a cage 8 secured to the underside of the formwork skin 1 which makes it possible to follow the variation d angle when changing spacing
- cette paroi coffrante a pour particularité que la partie anguleuse 4 de la structure 2 rigide a une cloison 9 permettant d'encager l'extrémité d'un étalement 15 qui se referme par une clavette 10 solidarisant ainsi l'étaiement 15 et la structure 2- This formwork wall has the particularity that the angular part 4 of the rigid structure 2 has a partition 9 making it possible to lock the end of a spreading 15 which closes with a key 10 thus securing the shoring 15 and the structure 2
- cette paroi coffrante a pour particularité que les moyens 3 d'écartement peuvent être multiples sur la largeur ou la longueur de la structure 2' pour assurer un meilleur réglage horizontal et un meilleur soutien de la peau 1 ' coffrante- This shuttering wall has the particularity that the spacing means 3 can be multiple over the width or the length of the structure 2 'to ensure better horizontal adjustment and better support for the skin 1' shuttering
- cette paroi coffrante a pour particularité que les bords latéraux sont équipés en sous-face de la peau 1 de guides 11 fixes dans lesquels coulissent d'autres éléments 12 supportant et guidant un flanc 13 supplémentaire de matière formant une peau coffrante auxiliaire qui s'adapte aux besoins de l'ouvrage - This shuttering wall has the particularity that the lateral edges are equipped on the underside of the skin 1 with fixed guides 11 in which slide other elements 12 supporting and guiding an additional sidewall 13 of material forming an auxiliary shuttering skin which s adapts to the needs of the structure

Claims

REVENDICATIONS
1. Paroi coffrante à géométrie variable pour la réalisation de la face inférieure d'un escalier tournant ou hélécoîdal en béton se prêtant au gauchissement caractérisée en ce qu'elle comprend :1. Formwork wall with variable geometry for the realization of the lower face of a spiral or helical staircase in concrete suitable for warping characterized in that it comprises:
- une peau (1) coffrante deformable associée en sous-face à une structure (2) porteuse rigide et- a deformable formwork skin (1) associated on the underside with a rigid support structure (2) and
- des moyens (3) de modification de l'écartement entre la sous-face de la peau (1 ) coffrante et la structure (2) porteuse de manière à infléchir la-dite peau (1) et à lui faire prendre la forme gauche souhaitée.- Means (3) for modifying the spacing between the underside of the formwork skin (1) and the supporting structure (2) so as to bend the said skin (1) and make it take the left shape desired.
2. Paroi coffrante selon la revendication 1 caractérisée en ce qu'elle s'étend selon deux directions sensiblement orthogonales flexibles en flèches2. Formwork wall according to claim 1 characterized in that it extends in two substantially orthogonal flexible directions in arrows
(1') à partir d'une médiane (14).(1 ') from a median (14).
3. Paroi coffrante selon l'une quelconque des revendications 1 et 2 caractérisée en ce que la structure (2) porteuse rigide est en forme de L :3. Formwork wall according to any one of claims 1 and 2 characterized in that the structure (2) rigid carrier is L-shaped:
- dont la partie anguleuse (4) est solidarisée par un écrau (5) à ta sous- face de la peau (1 ) coffrante en son centre pour en rigidiftβr la médiane (14).- whose angular part (4) is secured by a nut (5) to your underside of the skin (1) shuttering in its center for rigidiftβr the median (14).
- dont les ailes (2') s'éloignent avec constance de la peau (1) et aux extrémités desquelles se situent les moyens (3) de modification d'écartement.- whose wings (2 ') steadily move away from the skin (1) and at the ends of which are located the means (3) for modifying the spacing.
4. Paroi coffrante selon l'une quelconque des revendications 1 à 3 caractérisée en ce que les moyens (3) d'écartement peuvent être des vérins. 4. Formwork wall according to any one of claims 1 to 3 characterized in that the means (3) of spacing can be cylinders.
5. Paroi coffrante selon l'une quelconque des revendications 1 à 4 caractérisée en ce que les moyens (3) d'écartement sont des vérins mécaniques.5. Formwork wall according to any one of claims 1 to 4 characterized in that the means (3) of spacing are mechanical cylinders.
6. Paroi coffrante selon l'une quelconque des revendications 1 à 5 caractérisée en ce que les moyens (3) de modification d'écartement ont un système (6) de blocage solidaire de la structure (2) rigide pour arrêter l'espace entre la sous-face de la peau (1) coffrante et la structure (2) porteuse aux besoins de l'ouvrage.6. Formwork wall according to any one of claims 1 to 5 characterized in that the means (3) for spacing modification have a system (6) for integral blocking of the structure (2) rigid to stop the space between the underside of the formwork skin (1) and the supporting structure (2) to the needs of the structure.
7. Paroi coffrante selon l'une quelconque des revendications 1 à 5 caractérisée en ce que l'une des extrémités des moyens (3) de modiftcation d'écartement a un axe (7) de rotation prisonnier dans une cage (8) solidarisée à la sous-face de la peau (1 ) coffrante qui permet de suivre ia variation d'angle lors de la modification d'écartement.7. Formwork wall according to any one of claims 1 to 5 characterized in that one of the ends of the means (3) for modifting the spacing has an axis (7) of rotation trapped in a cage (8) secured to the underside of the formwork skin (1) which makes it possible to follow the variation in angle when the spacing is modified.
8. Paroi coffrante selon l'une quelconque des revendications 1 à 3 caractérisée en ce que la partie anguleuse (4) de la structure (2) rigide a une cloison (9) permettant d'encager l'extrémité d'un étalement (15) qui se referme par une clavette (10) solidarisant ainsi l'étalement (15) et ia structure (2).8. Formwork wall according to any one of claims 1 to 3 characterized in that the angular part (4) of the rigid structure (2) has a partition (9) making it possible to lock the end of a spread (15 ) which closes with a key (10) thus securing the spreading (15) and the structure (2).
9. Paroi coffrante selon l'une quelconque des revendications 1à 7 caractérisée en ce que les moyens (3) d'écartement peuvent être multiples sur la largeur ou la longueur de la structure (2') pour assurer un meilleur réglage horizontal et un meilleur soutien de ia peau (1 ') coffrante.9. Formwork wall according to any one of claims 1 to 7 characterized in that the means (3) of spacing can be multiple over the width or length of the structure (2 ') to ensure better horizontal adjustment and better support of the shuttering skin (1 ').
10. Paroi coffrante selon l'une quelconque des revendications 1 et 2 caractérisée en ce que les bords latéraux sont équipés en sous-face de ia peau (1) de guides (11) fixes dans lesquels coulissent d'autres éléments (12) supportant et guidant un flanc (13) supplémentaire de matière formant une peau coffrante auxiliaire qui s'adapte aux besoins de l'ouvrage. 10. Formwork wall according to any one of claims 1 and 2 characterized in that the lateral edges are equipped on the underside of the skin (1) of guides (11) fixed in which slide other elements (12) supporting and guiding an additional sidewall (13) of material forming an auxiliary shuttering skin which adapts to the needs of the structure.
EP00960780A 1999-09-03 2000-09-01 Adjustable formwork skin for spiral or helical staircase Withdrawn EP1266108A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR9911239A FR2798153B1 (en) 1999-09-03 1999-09-03 ADJUSTABLE SHOWER SKIN FOR TURNING OR HELICOIDAL STAIRS
FR9911239 1999-09-03
PCT/FR2000/002425 WO2001018326A1 (en) 1999-09-03 2000-09-01 Adjustable formwork skin for spiral or helical staircase

Publications (1)

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EP1266108A1 true EP1266108A1 (en) 2002-12-18

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP00960780A Withdrawn EP1266108A1 (en) 1999-09-03 2000-09-01 Adjustable formwork skin for spiral or helical staircase

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EP (1) EP1266108A1 (en)
AU (1) AU7296900A (en)
FR (1) FR2798153B1 (en)
WO (1) WO2001018326A1 (en)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1212314A (en) * 1958-10-06 1960-03-23 Entpr Leon Chaize & Cie Metal formwork for concrete walls
DE1684476A1 (en) * 1966-01-31 1970-12-17 Wilhelm Stimpfle Device for the production of fixed concrete stairs
DE2546375C3 (en) * 1975-10-16 1980-11-06 Heinz Dexler Gmbh, 6520 Worms Device for connecting formwork girders carrying the formwork skin and belt girders supporting them for circular formwork
DE3125587A1 (en) * 1981-06-30 1983-01-13 Hünnebeck GmbH, 4030 Ratingen Intermediate piece for producing curved shuttering surfaces
FR2612545A1 (en) * 1987-03-19 1988-09-23 Laloux Michel Reusable formwork modules making it possible to form varied architectural shapes
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.
DE4428577C2 (en) * 1994-08-12 1997-07-03 Baumann Verwertungs Gmbh Device for erecting formwork for the underside of the stair frame of a building staircase

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO0118326A1 *

Also Published As

Publication number Publication date
FR2798153B1 (en) 2001-11-23
WO2001018326A1 (en) 2001-03-15
FR2798153A1 (en) 2001-03-09
AU7296900A (en) 2001-04-10

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