EP0622496A1 - Method for making a manhole - Google Patents

Method for making a manhole Download PDF

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Publication number
EP0622496A1
EP0622496A1 EP94400896A EP94400896A EP0622496A1 EP 0622496 A1 EP0622496 A1 EP 0622496A1 EP 94400896 A EP94400896 A EP 94400896A EP 94400896 A EP94400896 A EP 94400896A EP 0622496 A1 EP0622496 A1 EP 0622496A1
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EP
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Prior art keywords
manufacturing
axis
cunette
central element
peripheral
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EP94400896A
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German (de)
French (fr)
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EP0622496B1 (en
Inventor
Guy Charles Louis Houles
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SIMAT
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SIMAT
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    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03F—SEWERS; CESSPOOLS
    • E03F5/00—Sewerage structures
    • E03F5/02—Manhole shafts or other inspection chambers; Snow-filling openings; accessories
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D29/00—Independent underground or underwater structures; Retaining walls
    • E02D29/12—Manhole shafts; Other inspection or access chambers; Accessories therefor

Definitions

  • the subject of the present invention is a method of manufacturing a canopy, or manhole, arranged to connect at least two flow pipes, each axis of which is substantially horizontal.
  • Cunettes are commonly used in construction sites to ensure the connection between at least two elements, generally tubular, of a fluid flow network.
  • the network can be connected to the sewer network; the fluid can be waste water or any other possibly polluting liquid.
  • a sump, or manhole allows the visit and maintenance of the network by vision from above, and has lateral circular holes to receive the pipes of the network.
  • Most of the gutters are often made of concrete, but one can also provide, as for pipes, a manufacture in PVC, fiber cement, cast iron, sandstone or similar.
  • polluting liquid it is necessary that the connection between the pipes, and of course between each pipe and each gully, is tight; similarly, the various joints between the manholes and the drain must be watertight to avoid pollution of the water table.
  • the depth of the gaze must be adapted to the relative depth of the network in relation to the water table.
  • the pipes, or nozzles have diameters of up to 300 mm and more, and there may be several pipes of several diameters arriving and departing from the same cuneo.
  • these arrival and departure pipes are not necessarily coaxial and it is known to use molded cones with predetermined arrival and departure angles, for example at 90 °, which requires adaptations on site. and the use of connection elbows, which increases on the one hand the network pressure losses, on the other hand the number of connections to be made, hence a greater risk of leakage and accidental pollution.
  • the object of the present invention is to propose a cunette whose manufacturing process is such that it can receive pipes of different diameters with angles and variable arrival and departure levels which are adapted to the demand as a function of the site and the slope of the network.
  • the proposed cunette is of modular design, the drilling of the lateral orifices of the central element is carried out on demand in accordance with the desired angle and the peripheral elements are then placed facing each other. screw these holes so that, on the site, the drain pipes always arrive perpendicular to the wall of the cunette which allows on the one hand to ensure a good seal between the pipe and the wall of the cunette, d on the other hand to avoid the presence of a bent connecting piece.
  • This technique is particularly suitable when we know in advance what the angles between the pipes will be.
  • the step of assembling the peripheral elements on the central element is carried out by bonding each peripheral element to the central element, as a variant, mechanical fixing can also be provided.
  • the cunette has a variable height between 300 and 2,500 mm.
  • the variable height of the cunette adapted to the site, makes it possible to arrange the joint between the cunette and the upper element preferably above the level of the water table.
  • each peripheral element with a horizontal axis can be adapted to the diameter of the pipe connected to it, likewise, the lateral orifices are located at different heights which each correspond to the height of the axis of the flow pipe to be connected; for this connection, a male or female connector can be provided which may advantageously include a seal.
  • the bottom of the cunette is arranged in order to reduce the pressure losses and therefore to favor the flow of fluids.
  • the material used to make this arrangement can be adapted to the chemical aggressiveness of the fluid (aluminous concrete, etc.) or to the erosion caused by the flow slope.
  • FIG 1 a central element 50 and two peripheral elements 60, 70 in exploded view and ready to be assembled.
  • the central element 50 is a hollow cylinder with a vertical axis and closed downwards, it is here provided with a cover 90 which is of course removable; the vertical wall of the central element has two orifices 51, 52 which are arranged coaxial with the future flow pipes whose axes E, S are shown; in Figure 1 only the orifice 51 is really visible.
  • the two peripheral elements 60, 70 essentially have the shape of a hollow cylinder opening on two sides between a flat face 61, 71 and a concave face 62, 72; each concave face 62, 72 has a curvature which matches the external face of the hollow cylinder of the central element 50 with a vertical axis.
  • the peripheral elements 60, 70 are shown with a generally parallelepipedic external shape but this is clearly not an obligation and their external surface could just as easily be in the form of a cylinder preferably coaxial with the axis of the duct.
  • FIG. 2 represents the same elements as in FIG. 1, the same references have been kept, only the viewing angle is changed so that in this FIG. 2, the concave surface 62 of the peripheral element 60 is better seen. and also the orifice 52 of the central element 50.
  • the axes E and S are substantially coaxial but this is obviously not an obligation since the holes 51, 52 are made on demand.
  • Figure 3 is shown an assembled cunette 1 whose axes E and S form an angle A which can be arbitrary, that is to say determined on request.
  • the assembly of the peripheral elements 60, 70 on the central element opposite each drilling is carried out by gluing or by mechanical fixing; by way of nonlimiting example, the peripheral element 70 is represented with a male connector 73 in the direction of the axis S while the peripheral element 60 is represented with a female connector 63 in the direction of the axis E.
  • FIG. 4 a cunette 1 consisting of a central element 50 and two peripheral elements 60, 70 respectively connected to a nozzle 2 along the axis E and to a nozzle 3 along the axis S, the axes E and S forming, in accordance with the invention, any angle.
  • the removable cover 90 shows a removable cover 90, it is clear that, depending on the level of the water table, and / or the depth of the network relative to the ground surface, provision can be made to place the cunette 1 and in particular above its central element 50, one or more cylindrical sleeves of the same diameter as the central element 50 opening on both sides and stacked on each other, the cover 90 then being placed on the last of between them.
  • connections of all these modular elements can be made with male and female connection devices provided with a gasket; the gutters being drilled on demand, it is clear that the level of the axes E and S is not necessarily the same, which makes it possible to obtain a monobloc connection gimbal with variable angle and adapted to each site.
  • the bottom (55) of the cunette (50) can be arranged to facilitate the flow of fluids avoiding deposits.
  • the usual cunettes have a diameter D of the order of 1 meter; the manufacturing method of the invention is particularly effective in the case where the drainage pipes have a diameter d ⁇ 0.4 D, that is to say a diameter of at least 400 mm; in fact, it is in this case that the bearing face of the known seals is not flat, hence a tendency to leak, while the bearing face 61, 71, thanks to the invention, is plane ; this result is obtained for a minimum cost due to the modularity of the elements.
  • the assembly produced makes it possible to obtain a sealed monobloc manhole of variable height and at variable angle which is easily integrated into a sealed network.

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Abstract

Method for manufacturing a sewer, including the following steps: - moulding a central element (50) of vertical axis having essentially the shape of a hollow cylinder closed at the bottom of variable height, - moulding two peripheral elements (60, 70) of horizontal axis each essentially having the shape of a hollow cylinder emerging on both sides between a flat face and a concave face (62, 72), the curvature of which matches the outer face of the hollow cylinder of the central element of vertical axis, - drilling the vertical wall of the central element in order to form at least two lateral orifices (51, 52) of horizontal axis and forming between them an angle A selected to order, with possibly different levels, - assembling the sewer by attaching each peripheral element respectively facing each drilling of the central element. <IMAGE>

Description

La présente invention a pour objet un procédé de fabrication d'une cunette, ou fond de regard, agencée pour raccorder au moins deux tuyaux d'écoulement dont chaque axe est sensiblement horizontal.The subject of the present invention is a method of manufacturing a canopy, or manhole, arranged to connect at least two flow pipes, each axis of which is substantially horizontal.

Les cunettes sont couramment utilisées dans les chantiers pour assurer la liaison entre au moins deux éléments, généralement tubulaires, d'un réseau d'écoulement de fluide. Le réseau peut être connecté au réseau d'égout ; le fluide peut être des eaux usées ou tout autre liquide éventuellement polluant.Cunettes are commonly used in construction sites to ensure the connection between at least two elements, generally tubular, of a fluid flow network. The network can be connected to the sewer network; the fluid can be waste water or any other possibly polluting liquid.

Une cunette, ou fond de regard, permet la visite et l'entretien du réseau par vision par le dessus, et comporte des orifices circulaires latéraux pour recevoir les tuyaux du réseau. La plupart des cunettes sont souvent fabriquées en béton mais on peut aussi prévoir, comme pour les tuyaux, une fabrication en PVC, fibre ciment, fonte, grès ou similaire. Dans le cas de liquide polluant, il est nécessaire que la liaison entre les tuyaux, et bien sûr entre chaque tuyau et chaque cunette, soit étanche ; de même, les différents joints entre les éléments de regard et la cunette doivent être étanches pour éviter la pollution de la nappe phréatique. En outre, la profondeur du regard doit être adaptée à la profondeur relative du réseau par rapport à la nappe phréatique. D'une manière générale, les tuyaux, ou buses, ont des diamètres allant jusqu'à 300 mm et plus, et il peut y avoir plusieurs tuyaux de plusieurs diamètres arrivant et repartant d'une même cunette. Bien entendu ces tuyaux d'arrivée et de départ ne sont pas nécessairement coaxiaux et il est connu d'utiliser des cunettes moulées avec des angles d'arrivée et de départ prédéterminés, par exemple à 90°, ce qui nécessite des adaptations sur le chantier et l'utilisation de coudes de raccordement ce qui augmente d'une part les pertes de charge du réseau, d'autre part le nombre de liaisons à effectuer d'où un risque plus important de défaut d'étanchéité et de pollution accidentelle.A sump, or manhole, allows the visit and maintenance of the network by vision from above, and has lateral circular holes to receive the pipes of the network. Most of the gutters are often made of concrete, but one can also provide, as for pipes, a manufacture in PVC, fiber cement, cast iron, sandstone or similar. In the case of polluting liquid, it is necessary that the connection between the pipes, and of course between each pipe and each gully, is tight; similarly, the various joints between the manholes and the drain must be watertight to avoid pollution of the water table. In addition, the depth of the gaze must be adapted to the relative depth of the network in relation to the water table. In general, the pipes, or nozzles, have diameters of up to 300 mm and more, and there may be several pipes of several diameters arriving and departing from the same cuneo. Of course, these arrival and departure pipes are not necessarily coaxial and it is known to use molded cones with predetermined arrival and departure angles, for example at 90 °, which requires adaptations on site. and the use of connection elbows, which increases on the one hand the network pressure losses, on the other hand the number of connections to be made, hence a greater risk of leakage and accidental pollution.

La présente invention a pour but de proposer une cunette dont le procédé de fabrication est tel qu'elle peut recevoir des tuyaux de différents diamètres avec des angles et des niveaux d'arrivée et de départ variables que l'on adapte à la demande en fonction du chantier et de la pente du réseau.The object of the present invention is to propose a cunette whose manufacturing process is such that it can receive pipes of different diameters with angles and variable arrival and departure levels which are adapted to the demand as a function of the site and the slope of the network.

Selon la présente invention, un procédé de fabrication d'une cunette, ou fond de regard, agencée pour raccorder au moins deux tuyaux d'écoulement dont chaque axe est sensiblement horizontal, est particulièrement remarquable en ce qu'il comporte les étapes suivantes :

  • d'une part moulage d'un élément central monobloc à axe vertical ayant essentiellement la forme d'un cylindre creux fermé vers le bas,
  • d'autre part moulage d'au moins deux éléments périphériques à axe horizontal ayant chacun essentiellement la forme d'un cylindre creux débouchant des deux côtés entre une face plane et une face concave dont la courbure épouse la face externe du cylindre creux de l'élément central à axe vertical,
  • perçage de la paroi verticale de l'élément central pour former au moins deux orifices latéraux dont chaque axe est horizontal et formant entre eux un angle A choisi à la demande, chaque axe étant respectivement destiné à être coaxial à l'un des tuyaux d'écoulement,
  • assemblage de la cunette en rapportant chaque élément périphérique respectivement en vis-à-vis de chaque perçage de l'élément central.
According to the present invention, a method of manufacturing a canopy, or manhole, arranged to connect at least two flow pipes, each axis of which is substantially horizontal, is particularly remarkable in that it comprises the following steps:
  • on the one hand molding of a central monobloc element with vertical axis having essentially the shape of a hollow cylinder closed downwards,
  • on the other hand molding of at least two peripheral elements with a horizontal axis each having essentially the shape of a hollow cylinder opening on both sides between a flat face and a concave face whose curvature matches the external face of the hollow cylinder of the central element with vertical axis,
  • drilling the vertical wall of the central element to form at least two lateral orifices each axis of which is horizontal and forming between them an angle A chosen at demand, each axis being respectively intended to be coaxial with one of the flow pipes,
  • assembly of the cunette by adding each peripheral element respectively opposite each bore of the central element.

Ainsi selon l'invention, la cunette proposée est de conception modulaire, le perçage des orifices latéraux de l'élément central s'effectue à la demande conformément à l'angle désiré et l'on dispose ensuite les éléments périphériques en vis-à-vis de ces orifices de sorte que, sur le chantier, les tuyaux d'écoulement arrivent toujours perpendiculairement à la paroi de la cunette ce qui permet d'une part d'assurer une bonne étanchéité entre le tuyau et la paroi de la cunette, d'autre part d'éviter la présence de pièce de liaison coudée.Thus according to the invention, the proposed cunette is of modular design, the drilling of the lateral orifices of the central element is carried out on demand in accordance with the desired angle and the peripheral elements are then placed facing each other. screw these holes so that, on the site, the drain pipes always arrive perpendicular to the wall of the cunette which allows on the one hand to ensure a good seal between the pipe and the wall of the cunette, d on the other hand to avoid the presence of a bent connecting piece.

Selon la technique de moulage utilisée, on peut prévoir que l'étape de perçage de l'élément central à axe vertical est intégrée dans l'étape de moulage, avec insertion d'une réservation dans le voile de la paroi verticale pour les orifices latéraux. Cette technique est particulièrement adaptée lorsque l'on sait d'avance quels seront les angles que forment entre eux les tuyaux.Depending on the molding technique used, provision may be made for the step of drilling the central element with a vertical axis to be integrated into the molding step, with a reservation being inserted in the wall of the vertical wall for the lateral orifices. . This technique is particularly suitable when we know in advance what the angles between the pipes will be.

Avantageusement l'étape d'assemblage des éléments périphériques sur l'élément central s'effectue par collage de chaque élément périphérique sur l'élément central, en variante on peut aussi prévoir une fixation mécanique.Advantageously, the step of assembling the peripheral elements on the central element is carried out by bonding each peripheral element to the central element, as a variant, mechanical fixing can also be provided.

Préférentiellement, la cunette a une hauteur variable comprise entre 300 et 2 500 mm. Ainsi, la hauteur variable de la cunette, adaptée au chantier, permet de disposer le joint entre la cunette et l'élément supérieur de préférence en dessus du niveau de la nappe phréatique.Preferably, the cunette has a variable height between 300 and 2,500 mm. Thus, the variable height of the cunette, adapted to the site, makes it possible to arrange the joint between the cunette and the upper element preferably above the level of the water table.

Avec le procédé de fabrication d'une cunette conforme à l'invention, il est clair que le diamètre interne de chaque élément périphérique à axe horizontal peut être adapté au diamètre du tuyau qui lui est connecté, de même, les orifices latéraux se situent à des hauteurs différentes qui correspondent chacune à la hauteur de l'axe du tuyau d'écoulement à connecter ; pour cette connexion on peut prévoir un raccord mâle ou femelle lequel peut avantageusement comporter un joint d'étanchéité.With the method of manufacturing a cunette according to the invention, it is clear that the internal diameter of each peripheral element with a horizontal axis can be adapted to the diameter of the pipe connected to it, likewise, the lateral orifices are located at different heights which each correspond to the height of the axis of the flow pipe to be connected; for this connection, a male or female connector can be provided which may advantageously include a seal.

Une fois les éléments assemblés en fonction de la position respective des tuyaux, le fond de la cunette est aménagé afin de réduire les pertes de charges et donc de favoriser l'écoulement des fluides.Once the elements have been assembled according to the respective position of the pipes, the bottom of the cunette is arranged in order to reduce the pressure losses and therefore to favor the flow of fluids.

En outre la matière utilisée pour faire cet aménagement peut être adaptée à l'agressivité chimique du fluide (béton alumineux...) ou à l'érosion provoquée par la pente d'écoulement.In addition, the material used to make this arrangement can be adapted to the chemical aggressiveness of the fluid (aluminous concrete, etc.) or to the erosion caused by the flow slope.

La présente invention sera bien comprise au vu de la description d'un exemple non limitatif de réalisation illustré par les dessins ci-joints parmi lesquels :

  • la figure 1 représente une vue éclatée d'une cunette conforme à l'invention,
  • la figure 2 représente la même cunette que celle de la figure 1 mais vue sous un autre angle,
  • la figure 3 représente une cunette assemblée conforme à l'invention,
  • la figure 4 représente une cunette assemblée et connectée à des tuyaux d'écoulement,
  • la figure 5 représente un aménagement du fond de la cunette.
The present invention will be clearly understood in the light of the description of a nonlimiting exemplary embodiment illustrated by the attached drawings, among which:
  • FIG. 1 represents an exploded view of a cunette according to the invention,
  • FIG. 2 represents the same wedge as that of FIG. 1 but seen from another angle,
  • FIG. 3 represents an assembled cunette according to the invention,
  • FIG. 4 represents an assembled cuneo and connected to drain pipes,
  • Figure 5 shows an arrangement of the bottom of the cunette.

Sur la figure 1 sont représentés un élément central 50 et deux éléments périphériques 60, 70 en vue éclatée et prêts à être assemblés. L'élément central 50 est un cylindre creux à axe vertical et fermé vers le bas, il est ici muni d'un couvercle 90 lequel est bien sûr amovible ; la paroi verticale de l'élément central comporte deux orifices 51, 52 qui sont disposés coaxiaux aux futurs tuyaux d'écoulement dont les axes E, S sont représentés ; sur la figure 1 seul l'orifice 51 est vraiment visible. Les deux éléments périphériques 60, 70 ont essentiellement la forme d'un cylindre creux débouchant des deux côtés entre une face plane 61, 71 et une face concave 62, 72 ; chaque face concave 62, 72 a une courbure qui épouse la face externe du cylindre creux de l'élément central 50 à axe vertical. Sur les figures, les éléments périphériques 60, 70 sont représentés avec une forme extérieure globalement parallélépipédique mais ceci n'est clairement pas une obligation et leur surface extérieure pourrait tout aussi bien être en forme de cylindre de préférence coaxial à l'axe du conduit.In Figure 1 are shown a central element 50 and two peripheral elements 60, 70 in exploded view and ready to be assembled. The central element 50 is a hollow cylinder with a vertical axis and closed downwards, it is here provided with a cover 90 which is of course removable; the vertical wall of the central element has two orifices 51, 52 which are arranged coaxial with the future flow pipes whose axes E, S are shown; in Figure 1 only the orifice 51 is really visible. The two peripheral elements 60, 70 essentially have the shape of a hollow cylinder opening on two sides between a flat face 61, 71 and a concave face 62, 72; each concave face 62, 72 has a curvature which matches the external face of the hollow cylinder of the central element 50 with a vertical axis. In the figures, the peripheral elements 60, 70 are shown with a generally parallelepipedic external shape but this is clearly not an obligation and their external surface could just as easily be in the form of a cylinder preferably coaxial with the axis of the duct.

La figure 2 représente les mêmes éléments que la figure 1, les mêmes repères ont été conservés, seul l'angle de vision est changé de sorte qu'on voit mieux, sur cette figure 2, la surface concave 62 de l'élément périphérique 60 et aussi l'orifice 52 de l'élément central 50. Sur ces deux figures 1 et 2 les axes E et S sont sensiblement coaxiaux mais ceci n'est évidemment pas une obligation puisque les perçages 51, 52 sont effectués à la demande.FIG. 2 represents the same elements as in FIG. 1, the same references have been kept, only the viewing angle is changed so that in this FIG. 2, the concave surface 62 of the peripheral element 60 is better seen. and also the orifice 52 of the central element 50. In these two figures 1 and 2 the axes E and S are substantially coaxial but this is obviously not an obligation since the holes 51, 52 are made on demand.

Sur la figure 3 est représentée une cunette assemblée 1 dont les axes E et S forment un angle A lequel peut être quelconque c'est-à-dire déterminé à la demande. L'assemblage des éléments périphériques 60, 70 sur l'élément central en vis-à-vis de chaque perçage est effectué par collage ou par fixation mécanique ; à titre d'exemple non limitatif, l'élément périphérique 70 est représenté avec un raccord mâle 73 en direction de l'axe S alors que l'élément périphérique 60 est représenté avec un raccord femelle 63 en direction de l'axe E.In Figure 3 is shown an assembled cunette 1 whose axes E and S form an angle A which can be arbitrary, that is to say determined on request. The assembly of the peripheral elements 60, 70 on the central element opposite each drilling is carried out by gluing or by mechanical fixing; by way of nonlimiting example, the peripheral element 70 is represented with a male connector 73 in the direction of the axis S while the peripheral element 60 is represented with a female connector 63 in the direction of the axis E.

Sur la figure 4 est représentée une cunette 1 constituée d'un élément central 50 et de deux éléments périphériques 60, 70 respectivement connectés à une buse 2 selon l'axe E et à une buse 3 selon l'axe S, les axes E et S formant, conformément à l'invention, un angle quelconque. Sur la cunette est représenté un couvercle amovible 90, il est clair qu'en fonction du niveau de la nappe phréatique, et/ou de la profondeur du réseau par rapport à la surface du sol, on peut prévoir de disposer au-dessus de la cunette 1 et notamment au-dessus de son élément central 50, un ou des manchons cylindriques de même diamètre que l'élément central 50 débouchant des deux côtés et empilés les uns sur les autres, le couvercle 90 étant alors disposé sur le dernier d'entre eux.In FIG. 4 is shown a cunette 1 consisting of a central element 50 and two peripheral elements 60, 70 respectively connected to a nozzle 2 along the axis E and to a nozzle 3 along the axis S, the axes E and S forming, in accordance with the invention, any angle. The removable cover 90 shows a removable cover 90, it is clear that, depending on the level of the water table, and / or the depth of the network relative to the ground surface, provision can be made to place the cunette 1 and in particular above its central element 50, one or more cylindrical sleeves of the same diameter as the central element 50 opening on both sides and stacked on each other, the cover 90 then being placed on the last of between them.

Les connexions de tous ces éléments modulaires peuvent être effectuées avec des dispositifs de raccord mâle et femelle munis de joint d'étanchéité ; les cunettes étant percées à la demande, il est clair que le niveau des axes E et S n'est pas nécessairement le même ce qui permet d'obtenir une cunette de raccordement monobloc à angle variable et adaptée à chaque chantier. De manière connue comme représenté sur la figure 5, le fond (55) de la cunette (50) peut être aménagé pour faciliter l'écoulement des fluides en évitant les dépôts.The connections of all these modular elements can be made with male and female connection devices provided with a gasket; the gutters being drilled on demand, it is clear that the level of the axes E and S is not necessarily the same, which makes it possible to obtain a monobloc connection gimbal with variable angle and adapted to each site. In known manner as shown in Figure 5, the bottom (55) of the cunette (50) can be arranged to facilitate the flow of fluids avoiding deposits.

A titre indicatif, on notera que les cunettes usuelles ont un diamètre D de l'ordre de 1 mètre ; le procédé de fabrication de l'invention est particulièrement efficace dans le cas où les tuyaux d'écoulement ont un diamètre d ≧ 0,4 D, c'est-à-dire un diamètre d'au moins 400 mm ; en effet, c'est dans ce cas que la face d'appui des joints connus n'est pas plane, d'où une tendance à fuir, alors que la face d'appui 61, 71, grâce à l'invention, est plane ; ce résultat est obtenu pour un coût minimum du fait de la modularité des éléments.As an indication, it will be noted that the usual cunettes have a diameter D of the order of 1 meter; the manufacturing method of the invention is particularly effective in the case where the drainage pipes have a diameter d ≧ 0.4 D, that is to say a diameter of at least 400 mm; in fact, it is in this case that the bearing face of the known seals is not flat, hence a tendency to leak, while the bearing face 61, 71, thanks to the invention, is plane ; this result is obtained for a minimum cost due to the modularity of the elements.

Du fait de la conception modulaire de la cunette conforme à l'invention, l'ensemble réalisé permet d'obtenir un regard monobloc étanche de hauteur variable et à angle variable s'intégrant facilement dans un réseau étanche.Due to the modular design of the cunette according to the invention, the assembly produced makes it possible to obtain a sealed monobloc manhole of variable height and at variable angle which is easily integrated into a sealed network.

Claims (9)

1) Procédé de fabrication d'une cunette, ou fond de regard, agencée pour raccorder au moins deux tuyaux d'écoulement dont chaque axe est sensiblement horizontal, caractérisé en ce qu'il comporte les étapes suivantes : - d'une part moulage d'un élément central monobloc (50) à axe vertical ayant essentiellement la forme d'un cylindre creux fermé vers le bas, - d'autre part moulage d'au moins deux éléments périphériques (60, 70) à axe horizontal ayant chacun essentiellement la forme d'un cylindre creux débouchant des deux côtés entre une face plane et une face concave (62, 72) dont la courbure épouse la face externe du cylindre creux de l'élément central à axe vertical, - perçage de la paroi verticale de l'élément central pour former au moins deux orifices latéraux (51, 52) dont chaque axe est horizontal et formant entre eux un angle A choisi à la demande, chaque axe étant respectivement destiné à être coaxial à l'un des tuyaux d'écoulement, - assemblage de la cunette en rapportant chaque élément périphérique respectivement en vis-à-vis de chaque perçage de l'élément central. 1) Method for manufacturing a cunette, or manhole, arranged to connect at least two flow pipes, each axis of which is substantially horizontal, characterized in that it comprises the following steps: on the one hand, molding of a central monobloc element (50) with a vertical axis having essentially the shape of a hollow cylinder closed downwards, - on the other hand molding of at least two peripheral elements (60, 70) with a horizontal axis each having essentially the shape of a hollow cylinder opening on both sides between a planar face and a concave face (62, 72), the curvature matches the external face of the hollow cylinder of the central element with vertical axis, - drilling the vertical wall of the central element to form at least two lateral orifices (51, 52) each axis of which is horizontal and forming between them an angle A chosen on demand, each axis being respectively intended to be coaxial with the 'one of the drain pipes, - Assembling the wedge by adding each peripheral element respectively opposite each drilling of the central element. 2) Procédé de fabrication d'une cunette selon la revendication 1, caractérisé en ce que l'étape de perçage de l'élément central (50) à axe vertical est intégrée dans l'étape de moulage, avec insertion d'une réservation dans le voile de la paroi verticale pour les orifices latéraux. 2) A method of manufacturing a cunette according to claim 1, characterized in that the step of drilling the central element (50) with a vertical axis is integrated in the molding step, with insertion of a reservation in the veil of the vertical wall for the lateral openings. 3) Procédé de fabrication d'une cunette selon la revendication 1 ou 2, caractérisé en ce que l'étape d'assemblage s'effectue par collage de chaque élément périphérique sur l'élément central. 3) A method of manufacturing a cunette according to claim 1 or 2, characterized in that the assembly step is carried out by bonding each peripheral element on the central element. 4) Procédé de fabrication d'une cunette selon la revendication 1 ou 2, caractérisé en ce que l'étape d'assemblage s'effectue par fixation mécanique de chaque élément périphérique sur l'élément central. 4) A method of manufacturing a cunette according to claim 1 or 2, characterized in that the step assembly is carried out by mechanical fixing of each peripheral element on the central element. 5) Procédé de fabrication d'une cunette selon l'une quelconque des revendications précédentes, caractérisé en ce que les orifices latéraux (51, 52) se situent à des hauteurs différentes qui correspondent chacune à la hauteur de l'axe du tuyau d'écoulement à connecter. 5) A method of manufacturing a cunette according to any one of the preceding claims, characterized in that the lateral orifices (51, 52) are located at different heights which each correspond to the height of the axis of the pipe flow to be connected. 6) Procédé de fabrication d'une cunette selon l'une quelconque des revendications précédentes, caractérisé en ce que les diamètres internes de chaque élément périphérique à axe horizontal sont différents. 6) A method of manufacturing a wedge according to any one of the preceding claims, characterized in that the internal diameters of each peripheral element with horizontal axis are different. 7) Procédé de fabrication d'une cunette selon l'une quelconque des revendications précédentes, caractérisé en ce que sur la face plane (61, 71) de chaque élément périphérique est prévu un raccord mâle ou femelle. 7) A method of manufacturing a wedge according to any one of the preceding claims, characterized in that on the flat face (61, 71) of each peripheral element is provided a male or female connector. 8) Procédé de fabrication d'une cunette selon la revendication 7, caractérisé en ce que le raccord mâle ou femelle est prévu avec un joint d'étanchéité. 8) A method of manufacturing a cunette according to claim 7, characterized in that the male or female connector is provided with a seal. 9) Procédé de fabrication d'une cunette selon l'une quelconque des revendications précédentes, caractérisé en ce que la cunette a une hauteur variable comprise entre 300 et 2 500 mm. 9) A method of manufacturing a sieve according to any one of the preceding claims, characterized in that the sieve has a variable height between 300 and 2,500 mm.
EP19940400896 1993-04-26 1994-04-26 Method for making a manhole Expired - Lifetime EP0622496B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9304889A FR2704576B1 (en) 1993-04-26 1993-04-26 PROCESS FOR MANUFACTURING A CUNETTE.
FR9304889 1993-04-26

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Publication Number Publication Date
EP0622496A1 true EP0622496A1 (en) 1994-11-02
EP0622496B1 EP0622496B1 (en) 1998-04-22

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EP19940400896 Expired - Lifetime EP0622496B1 (en) 1993-04-26 1994-04-26 Method for making a manhole

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EP (1) EP0622496B1 (en)
DE (1) DE69409703T2 (en)
ES (1) ES2118339T3 (en)
FR (1) FR2704576B1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0740024A1 (en) * 1995-04-27 1996-10-30 SOCIETE INDUSTRIELLE DE MATERIAUX en abrégé S.I.M.A.T. Method for manufacturing a manhole
AT405725B (en) * 1996-11-29 1999-11-25 Julius Posch Ges M B H Ing Mould for producing bottom parts of shafts
WO2002055796A1 (en) * 2001-01-16 2002-07-18 Bü-Sch Armaturen GmbH Means for connecting a sliding valve device to a storage basin
FR3045774A1 (en) * 2015-12-22 2017-06-23 Norham MULTI-LOOK ADAPTATION FLANGE

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE772605R (en) * 1971-09-15 1972-01-17 Gosselin Claudy PREFABRICATION OF THE LOWER PART OF A CHAMBER
US4089139A (en) * 1976-08-24 1978-05-16 Armco Steel Corporation Segmented cylindrical reinforced plastic manhole structure
EP0038255A1 (en) * 1980-04-15 1981-10-21 Syndicat National Des Entreprises De Drainage Function box for an agricultural drainage or waste water plant

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE772605R (en) * 1971-09-15 1972-01-17 Gosselin Claudy PREFABRICATION OF THE LOWER PART OF A CHAMBER
US4089139A (en) * 1976-08-24 1978-05-16 Armco Steel Corporation Segmented cylindrical reinforced plastic manhole structure
EP0038255A1 (en) * 1980-04-15 1981-10-21 Syndicat National Des Entreprises De Drainage Function box for an agricultural drainage or waste water plant

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0740024A1 (en) * 1995-04-27 1996-10-30 SOCIETE INDUSTRIELLE DE MATERIAUX en abrégé S.I.M.A.T. Method for manufacturing a manhole
FR2733526A1 (en) * 1995-04-27 1996-10-31 Simat Fr PROCESS FOR PRODUCING A CUNETTE
AT405725B (en) * 1996-11-29 1999-11-25 Julius Posch Ges M B H Ing Mould for producing bottom parts of shafts
WO2002055796A1 (en) * 2001-01-16 2002-07-18 Bü-Sch Armaturen GmbH Means for connecting a sliding valve device to a storage basin
FR3045774A1 (en) * 2015-12-22 2017-06-23 Norham MULTI-LOOK ADAPTATION FLANGE

Also Published As

Publication number Publication date
ES2118339T3 (en) 1998-09-16
FR2704576B1 (en) 1995-06-23
EP0622496B1 (en) 1998-04-22
FR2704576A1 (en) 1994-11-04
DE69409703D1 (en) 1998-05-28
DE69409703T2 (en) 1998-12-24

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