EP0135240A2 - Self-supporting slab for a false floor - Google Patents

Self-supporting slab for a false floor Download PDF

Info

Publication number
EP0135240A2
EP0135240A2 EP84201312A EP84201312A EP0135240A2 EP 0135240 A2 EP0135240 A2 EP 0135240A2 EP 84201312 A EP84201312 A EP 84201312A EP 84201312 A EP84201312 A EP 84201312A EP 0135240 A2 EP0135240 A2 EP 0135240A2
Authority
EP
European Patent Office
Prior art keywords
slab
concrete
slab according
ribs
cavities
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Withdrawn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
EP84201312A
Other languages
German (de)
French (fr)
Other versions
EP0135240A3 (en
Inventor
Arnold Emiel Marie Van Acker
Ghislain Gustaaf Amandus Vermeulen
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.)
"cbr Beton"
Original Assignee
"cbr Beton"
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 "cbr Beton" filed Critical "cbr Beton"
Publication of EP0135240A2 publication Critical patent/EP0135240A2/en
Publication of EP0135240A3 publication Critical patent/EP0135240A3/en
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • EFIXED CONSTRUCTIONS
    • E04BUILDING
    • E04FFINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS
    • E04F15/00Flooring
    • E04F15/02Flooring or floor layers composed of a number of similar elements
    • E04F15/024Sectional false floors, e.g. computer floors
    • E04F15/02405Floor panels

Definitions

  • the present invention relates to a self-supporting and removable slab, made of concrete, such as cement concrete, resin concrete, light concrete, etc., intended to be supported in the vicinity of its angles for the production of a false- modular floor.
  • the tiles must be removable in order to allow access at all times to the power cables and equipment of the various aforementioned devices.
  • the aforementioned jacks supporting the slabs being adjustable, which allows rectify the unevenness of the base floor to obtain a good flatness of the raised sub-floor.
  • the slabs must have a minimum deflection under load which is linked to the bearing capacity. The less the slab bends, the more stable the support of the devices.
  • the slabs must also be of high dimensional accuracy so that, on the one hand, they can be laid edge to edge with practically no joints and, on the other hand, so that the lower and upper faces of the slabs, once laid, are located in two parallel planes, the regularity of the dimensions at the angles, where the slabs are supported by the jacks, being particularly important. Failure to comply with this latter requirement would destroy the viability and aesthetics of the raised floor, reduce its fire resistance and make cleaning and maintenance difficult.
  • the tiles must be light to allow easy installation and handling, but also because any increase in weight of the raised floor leads to a reduction in the admissible payload of the base floor.
  • the tiles must be able to withstand the fire as long as possible without losing their bearing capacity.
  • Said slabs must also have an acoustic attenuating power to avoid the propagation of sound due to the fact that the floor and the raised floor form a sounding board. Since the surface of a raised floor will never be a perfect multiple of the standard dimensions of a slab, it must be possible to cut in any direction while continuing to meet the above requirements.
  • the slab should have a wear-resistant upper surface which would be more decorative, which would make it unnecessary to lay, as is done on virtually all slabs used to date, a coating layer, such as carpet, synthetic material, rubber material, etc ...
  • the known slabs made of concrete have the particular disadvantage of having a too high weight because of their profile and their composition, while metal slabs, wooden slabs, metal-wood composite slabs or metal-light concrete, etc., have the particular disadvantage of having too large arrows under load, of offering insufficient resistance to fire, and of not offering acoustic attenuation.
  • the object of the invention is to remedy the drawbacks of known slabs and to provide a new reinforced concrete slab, of reduced density, with or without the addition of fibers, such as metallic fibers, having an upper surface resistant to wear and having an appearance that is decorative enough to require no coating, this slab also offering the advantage of simultaneously meeting all the requirements listed above.
  • the slab is made of reinforced concrete, the upper and lateral faces of the slab being flat, the latter having, from its lower face, cavities, regularly distributed and aligned in two transverse directions. , arranged so that their side walls delimit, on the one hand, with the underside of the slab, stiffening ribs extending and intersecting in the two above directions and, on the other hand, with the side faces of the slab and the underside thereof, a peripheral radiation rib.
  • the concrete constituting the slab is a light concrete, with a dry density between 850 and 1500 kg / m 3
  • the irons constituting the reinforcement of the slab are embedded in the aforementioned stiffening ribs, at least one iron being provided in each of the ribs, the irons embedded in the peripheral stiffening rib having a larger section than that of the irons embedded in the other ribs.
  • the section of the stiffening ribs is substantially constant over their entire length.
  • the section of the peripheral stiffening rib is substantially constant over the entire periphery of the slab while the section of the ribs extending inside the peripheral rib is variable, the dimension of these ribs taken perpendicularly to the upper face of the slab decreasing regularly from the periphery of the slab towards the center of the latter.
  • the light concrete is based on aggregates of a very reduced density such as expanded glass beads, expanded clay beads, polystyrene beads, etc. combined or not, fibers, preferably metallic, being distributed in a homogeneous way in the mass of concrete.
  • the self-supporting and removable concrete slab 1, according to the invention and shown in the drawings, is intended to be supported in the vicinity of its angles for the production of a modular raised floor.
  • This slab is made of reinforced concrete and its upper 2 and lateral 3 faces are flat, the slab having, from its lower face 4 cavities 5, regularly distributed and aligned in two transverse directions shown diagrammatically by the arrows 6 and 7, arranged so that their side walls 8 delimit, on the one hand, with the lower face 4 of the slab, ribs of stiffening 9 and 10 extending and intersecting in the two above directions and, on the other hand, with the lateral faces 3 of the slab and the lower face 4 of the latter, a peripheral stiffening rib 11.
  • the concrete constituting the slab is a light concrete with a dry density between 850 and 1500 kg / m 3 .
  • the bars 12 constituting the reinforcement of the slab are embedded in the stiffening ribs 9, 10 and 11, at least one iron 12 being provided in each of the ribs, the bars embedded in the peripheral stiffening rib 11 having a larger section as that of the irons embedded in the other ribs 9 and 10, said irons 12 are situated substantially at the same level and are joined together by welding to form a trellis.
  • the slab 1 illustrated in the drawings is a square slab and the two directions 6 and 7 are parallel to two contiguous sides of the slab.
  • the sections of the cavities 5, taken parallel to the upper face 2 of the slab have the same shape as the corresponding section of the slab.
  • the sections of the stiffening ribs 9, 10 and 11 by planes perpendicular to the aforementioned directions are substantially in the form of isosceles trapezoids, the small base of these trapezoids coinciding with the lower face 4 of the slab.
  • the section of the stiffening ribs 9, 10 and 11, by the above perpendicular planes, is substantially constant over their entire length.
  • said slab can have, as shown in FIGS. 3 and 4, a peripheral stiffening rib 11 which has a substantially constant section around the entire periphery of the slab, while the section of the ribs 9 and 10 extending inside the peripheral rib 10 is variable, the dimension of these ribs 9 and 10, corresponding to the height of the abovementioned trapezoids, decreasing regularly from the periphery of the slab towards the center of the latter.
  • the reinforcement of the concrete advantageously comprises metallic fibers, such as steel fibers, not shown, embedded in the entire mass of the stick constituting the slab.
  • the bottoms 13 of the cavities 5 are substantially planar and parallel to the upper face 2 of the slab.
  • the bottoms 13 of the latter are provided with stiffening ribs 14 extending from their center towards the walls 8 of the cavities.
  • the stiffening ribs 14 presented by the bottoms of the cavities can be substantially parallel to the two directions 6 and 7 above, these ribs 14 having, for example, a constant section in the form of an isosceles triangle, the base of the latter coinciding with the bottom 13 of the cavity 5.
  • the peripheral stiffening rib 11 may comprise a reinforcing element 15 associated, around the entire periphery of the slab, either at least part of the height of the side walls 3 of the slab, or at at least this part and at least part of the faces 20 of said peripheral rib, this element 15, intended to withstand shocks, being rigid and made of metal, plastic or even resin concrete.
  • this element 15 consists of profiles 16, assembled at the location of the side edges 17 of the slab, which have two wings 18 and 19, the wings 18 constituting the side walls 3 of the slab, while that their wings 19 constitute a part of the faces 20 of the peripheral rib 11 which are parallel to the upper face 2 of the slab.
  • the peripheral rib 11 is lined, at the location of the lateral edges 17 and on either side thereof, of reinforcing elements 15 each consisting of two sections 21 and 22, substantially equal, of a rigid profile, made of metal, plastic or resin concrete, having two wings 18 and 19.
  • These sections 21 and 22 are joined together by one of their ends and their wings 18 and 19 extend, in the vicinity of the edges 17 of the slab, over the entire height of the lateral faces 3 of the latter and over part of the width of the faces 20 specified tees of the peripheral rib 11.
  • the slab according to the invention advantageously has, at its upper face 2, a layer of material 24, wear resistant, which is integral with the concrete constituting the slab.
  • This layer of material 24 can be constituted by a concrete known by the name of terrazzo type concrete.
  • the upper face 2 is advantageously polished to give the slab the appearance of a tiling, as well as to facilitate the maintenance of the raised floor.
  • the concrete that constitutes this slab is composed, per m 3 , of approximately 875 liters of expanded glass beads of particle size 2/6, of approximately 493 kg of Rhine sand of particle size 0/2, of approximately 502 kg of Portland cement 50, approximately 5 kg of super-fluidizer, without steel fibers or with approximately 26 kg of steel fibers whose diameter is of the order of 0.4 mm and the length of which is of the order of 40 mm and of approximately 187 liters of water.

Abstract

Self-supporting and removable slab (1), for a modular false floor, made from reinforced concrete in which the upper (2) and lateral (3) faces are plane, cavities (5) being provided, from the lower face (4) and uniformly distributed in two transverse directions (6, 7), the walls of these cavities (5) defining, with the face (4), stiffening ribs (9, 10) extending and intersecting in the directions (6, 7) and, with the faces (3) and the face (4), a peripheral stiffening rib (11). The figure in question is Figure 1. <IMAGE>

Description

La présente invention a pour objet une dalle autoportante et amovible, en béton, tel que béton de ciment, béton de résine, béton léger, etc..., destinée à être supportée au voisinage de ses angles pour la réalisation d'un faux-plancher modulaire.The present invention relates to a self-supporting and removable slab, made of concrete, such as cement concrete, resin concrete, light concrete, etc., intended to be supported in the vicinity of its angles for the production of a false- modular floor.

Dans de nombreux immeubles de bureaux, anciens ou récents, on installe des équipements tels que des ordinateurs, téléscripteurs, etc. Tous ces équipements nécessitent un grand nombre de câbles électriques qu'on ne peut pas poser à même le sol, ni encastrer définitivement dans la chape.In many office buildings, old or new, we install equipment such as computers, tickers, etc. All of this equipment requires a large number of electrical cables that cannot be laid on the floor, nor permanently embedded in the screed.

On a alors pensé à ériger un faux-plancher constitué de dalles autoportantes facilement amovibles et surélevées, par des vérins, par rapport au plancher de la construction. L'espace ainsi créé entre le faux-plancher et le plancher sert au passage des câbles, conduites ou autres équipements.We then thought of erecting a raised floor made up of self-supporting, easily removable and raised slabs, by jacks, relative to the construction floor. The space thus created between the raised floor and the floor is used for the passage of cables, pipes or other equipment.

Les dalles doivent être amovibles dans le but de permettre d'accéder à tout moment aux câbles d'alimentation et équipements des différents appareils susdits. Les vérins précités supportant les dalles étant réglables, ce qui permet de rectifier les inégalités du plancher de base pour obtenir une bonne planéité du faux-plancher en surface.The tiles must be removable in order to allow access at all times to the power cables and equipment of the various aforementioned devices. The aforementioned jacks supporting the slabs being adjustable, which allows rectify the unevenness of the base floor to obtain a good flatness of the raised sub-floor.

Les dalles pour faux-plancher doivent répondre à de nombreuses exigences. En effet, elles doivent présenter une capacité portante élevée pour pouvoir supporter aussi bien une charge uniformément répartie qu'une charge concentrée, telle que les roues d'un chariot ou. le pied d'un appareil ou d'un meuble. Les dalles doivent présenter une flèche minimale sous charge qui est liée à la capacité portante. Moins la dalle fléchira, plus l'appui des appareils sera stable. Les dalles doivent également être d'une grande précision dimensionnelle afin, d'une part, de pouvoir être posées bord à bord pratiquement sans joint et, d'autre part, pour que les faces inférieures et supérieures des dalles une fois posées soient situées dans deux plans parallèles, la régularité des dimensions au niveau des angles, où les dalles sont supportées par les vérins, étant particulièrement importante. Le non respect de cette dernière exigence détruirait la viabilité et l'esthétique du faux-plancher, réduirait sa résistance au feu et rendrait son nettoyage et son entretien difficiles.There are many requirements for false floor tiles. In fact, they must have a high bearing capacity in order to be able to withstand both a uniformly distributed load and a concentrated load, such as the wheels of a trolley or. the base of an appliance or piece of furniture. The slabs must have a minimum deflection under load which is linked to the bearing capacity. The less the slab bends, the more stable the support of the devices. The slabs must also be of high dimensional accuracy so that, on the one hand, they can be laid edge to edge with practically no joints and, on the other hand, so that the lower and upper faces of the slabs, once laid, are located in two parallel planes, the regularity of the dimensions at the angles, where the slabs are supported by the jacks, being particularly important. Failure to comply with this latter requirement would destroy the viability and aesthetics of the raised floor, reduce its fire resistance and make cleaning and maintenance difficult.

Outre ces exigences, les dalles doivent être légères pour permettre une pose et une manipulation aisées, mais aussi parce que toute augmentation de poids du faux-plancher entraine une diminution de la charge utile admissible du plancher de base. Comme une multitude de câbles électriques parcourent l'espace situé sous le faux-plancher et que de ce fait le risque de court- circuit et d'incendie est important, les dalles doivent pouvoir résister le plus longtemps possible au feu sans perdre de leur capacité portante. Lesdites dalles doivent aussi avoir un pouvoir d'affaiblissement acoustique pour éviter la propagation dessons compte tenu du fait que le plancher et le faux-plancher forment une caisse de résonance. Comme la surface d'un faux-plancher ne sera jamais un multiple parfait des dimensions standard d'une dalle, celle-ci doit pouvoir être découpée dans n'importe quel sens tout en continuant à répondre aux exigences précitées. Enfin la dalle devrait présenter une surface supérieure résistante à l'usure qui serait en plus décorative, ce qui permettrait de rendre inutile la pose, comme cela se fait sur pratiquement toutes les dalles utilisées à ce jour, d'une couche de revêtement, telle que tapis, matière synthétique, matière à base de caoutchouc, etc....In addition to these requirements, the tiles must be light to allow easy installation and handling, but also because any increase in weight of the raised floor leads to a reduction in the admissible payload of the base floor. Like a multitude of cables electric cables run through the space under the raised floor and therefore the risk of short circuit and fire is high, the tiles must be able to withstand the fire as long as possible without losing their bearing capacity. Said slabs must also have an acoustic attenuating power to avoid the propagation of sound due to the fact that the floor and the raised floor form a sounding board. Since the surface of a raised floor will never be a perfect multiple of the standard dimensions of a slab, it must be possible to cut in any direction while continuing to meet the above requirements. Finally, the slab should have a wear-resistant upper surface which would be more decorative, which would make it unnecessary to lay, as is done on virtually all slabs used to date, a coating layer, such as carpet, synthetic material, rubber material, etc ...

Aucune des dalles connues ne répond simultanément aux exigences exposées ci-dessus. En effet, les dalles connues réalisées en béton présentent notamment l'inconvénient d'avoir un poid.s trop élevé à cause de leur profil et de leur composition, tandis que les dalles métalliques, les dalles en bois, les dalles composites métal-bois ou métal- béton léger, etc.... présentent notamment l'inconvénient d'avoir sous charge des flèches trop importantes, d'offrir une résistance insuffisante au feu, et de ne pas offrir d'affaiblissement acoustique.None of the known tiles simultaneously meets the requirements set out above. Indeed, the known slabs made of concrete have the particular disadvantage of having a too high weight because of their profile and their composition, while metal slabs, wooden slabs, metal-wood composite slabs or metal-light concrete, etc., have the particular disadvantage of having too large arrows under load, of offering insufficient resistance to fire, and of not offering acoustic attenuation.

L'invention a pour but de remédier aux inconvénients des dalles connues et de procurer une nouvelle dalle en béton armé, d'un poids volumique réduit, avec adjonction ou non de fibres, telles que fibres métalliques, ayant une face supérieure résistant à l'usure et présentant un aspect suffisamment décoratif pour ne nécessiter aucun revêtement, cette dalle offrant en outre l'avantage de satisfaire simultanément à toutes les exigences énumérées ci-dessus.The object of the invention is to remedy the drawbacks of known slabs and to provide a new reinforced concrete slab, of reduced density, with or without the addition of fibers, such as metallic fibers, having an upper surface resistant to wear and having an appearance that is decorative enough to require no coating, this slab also offering the advantage of simultaneously meeting all the requirements listed above.

A cet effet, suivant l'invention, la dalle est réalisée en béton armé, les faces supérieure et latérales de la dalle étant planes, cette dernière présentant, à partir de sa face inférieure, des cavités, régulièrement réparties et alignées suivant deux directions transversales, agencées pour que leurs parois latérales délimitent, d'une part, avec la face inférieure de la dalle, des nervures de raidissement s'étendant et se croisant suivant les deux directions susdites et, d'autre part, avec les faces latérales de la dalle et la face inférieure de celle-ci, une nervure de radis- sement périphérique.To this end, according to the invention, the slab is made of reinforced concrete, the upper and lateral faces of the slab being flat, the latter having, from its lower face, cavities, regularly distributed and aligned in two transverse directions. , arranged so that their side walls delimit, on the one hand, with the underside of the slab, stiffening ribs extending and intersecting in the two above directions and, on the other hand, with the side faces of the slab and the underside thereof, a peripheral radiation rib.

Suivant une forme de réalisation de l'invention, le béton constituant la dalle est un béton léger, d'un poids volumique sec compris entre 850 et 1500 kg/m 3 According to one embodiment of the invention, the concrete constituting the slab is a light concrete, with a dry density between 850 and 1500 kg / m 3

Suivant un mode de réalisation avantageux de l'invention, les fers constituant l'armature de la dalle sont noyés dans les nervures de raidissement précitées, au moins un fer étant prévu dans chacune des nervures, les fers noyés dans la nervure de raidissement périphérique ayant une section plus importante que celle des fers noyés dans les autres nervures.According to an advantageous embodiment of the invention, the irons constituting the reinforcement of the slab are embedded in the aforementioned stiffening ribs, at least one iron being provided in each of the ribs, the irons embedded in the peripheral stiffening rib having a larger section than that of the irons embedded in the other ribs.

Suivant un mode de réalisation de l'invention, la section des nervures de raidissement est sensiblement constante sur toute leur longueur.According to one embodiment of the invention, the section of the stiffening ribs is substantially constant over their entire length.

Suivant un autre mode de réalisation de l'invention, la section de la nervure de raidissement périphérique est sensiblement constante sur toutja pourtour de la dalle tandis que la section des nervures s'étendant à l'intérieur de la nervure périphérique est variable, la dimension de ces nervures prise perpendiculairement à la face supérieure de la dalle décroissant régulièrement de la périphérie de la dalle vers le centre de cette dernière.According to another embodiment of the invention, the section of the peripheral stiffening rib is substantially constant over the entire periphery of the slab while the section of the ribs extending inside the peripheral rib is variable, the dimension of these ribs taken perpendicularly to the upper face of the slab decreasing regularly from the periphery of the slab towards the center of the latter.

Suivant une forme de réalisation particulièrement avantageuse de l'invention, le béton léger est à base d'agrégats d'un poids volumique très réduit tels que billes de verre expansé, billes d'argile expansée, billes de polystyrène, etc.... combinés ou non, des fibres, de préférence métalliques, étant réparties d'une façon homogène dans la masse du béton.According to a particularly advantageous embodiment of the invention, the light concrete is based on aggregates of a very reduced density such as expanded glass beads, expanded clay beads, polystyrene beads, etc. combined or not, fibers, preferably metallic, being distributed in a homogeneous way in the mass of concrete.

D'autres détails et particularités de l'invention ressortiront de la description des dessins annexés au présent mémoire et qui représentent, à titre d'exemples non limitatifs, des formes de réalisation particulières de la dalle suivant l'invention.Other details and particularities of the invention will emerge from the description of the drawings appended to this specification and which represent, by way of nonlimiting examples, particular embodiments of the slab according to the invention.

  • La figure 1 est une vue en plan montrant la face inférieure d'une dalle suivant l'invention.Figure 1 is a plan view showing the underside of a slab according to the invention.
  • La figure 2 est une vue en coupe suivant la ligne II-II de la figure 1.Figure 2 is a sectional view along line II-II of Figure 1.
  • La figure 3 est une vue en coupe analogue à la figure 2 et montre une variante de la dalle illustrée aux figures 1 et 2.FIG. 3 is a sectional view similar to FIG. 2 and shows a variant of the slab illustrated in FIGS. 1 and 2.
  • La figure 4 est une vue en coupe suivant la ligne IV-IV de la figure 3.FIG. 4 is a sectional view along line IV-IV of FIG. 3.
  • La figure 5 est une vue en perspective, avec brisures partielles , d'une variante des dalles illustrées aux figures 1 à 4.FIG. 5 is a perspective view, with partial breaks, of a variant of the slabs illustrated in FIGS. 1 to 4.
  • La figure 6 est une vue analogue à la figure 5 et montre une forme de réalisation différente de la dalle illustrée à la figure 5.FIG. 6 is a view similar to FIG. 5 and shows a different embodiment of the slab illustrated in FIG. 5.

Dans les différentes figures, les mêmes notations de référence désignent des éléments identiques ou analogues.In the different figures, the same reference notations designate identical or analogous elements.

La dalle autoportante et amovible en béton 1, suivant l'invention et représentée aux dessins, est destinée à être supportée au voisinage de ses angles pour la réalisation d'un faux-plancher modulaire. Cette dalle est réalisée en béton armé et ses faces supérieure 2 et latérales 3 sont planes, la dalle présentant, à partir de sa face inférieure 4 des cavités 5, régulièrement réparties et alignées suivant deux directions transversales schématisées par les flèches 6 et 7, agencées pour que leurs parois latérales 8 délimitent, d'une part, avec la face inférieure 4 de la dalle, des nervures de raidissement 9 et 10 s'étendant et se croisant suivant les deux directions susdites et, d'autre part, avec les faces latérales 3 de la dalle et la face inférieure 4 de celle-ci, une nervure de raidissement périphérique 11.The self-supporting and removable concrete slab 1, according to the invention and shown in the drawings, is intended to be supported in the vicinity of its angles for the production of a modular raised floor. This slab is made of reinforced concrete and its upper 2 and lateral 3 faces are flat, the slab having, from its lower face 4 cavities 5, regularly distributed and aligned in two transverse directions shown diagrammatically by the arrows 6 and 7, arranged so that their side walls 8 delimit, on the one hand, with the lower face 4 of the slab, ribs of stiffening 9 and 10 extending and intersecting in the two above directions and, on the other hand, with the lateral faces 3 of the slab and the lower face 4 of the latter, a peripheral stiffening rib 11.

Le béton constituant la dalle est un béton léger d'un poids volumique sec compris entre 850 et 1500 kg/m3. Les fers 12 constituant l'armature de la dalle sont noyés dans les nervures de raidissement 9, 10 et 11, au moins un fer 12 étant prévu dans chacune des nervures, les fers noyés dans la nervure de raidissement périphérique 11 ayant une section plus importante que celle des fers noyés dans les autres nervures 9 et 10, Lesdits fers 12 sont situés sensiblement au même niveau et sont réunis entre eux par soudure pour constituer un treillis.The concrete constituting the slab is a light concrete with a dry density between 850 and 1500 kg / m 3 . The bars 12 constituting the reinforcement of the slab are embedded in the stiffening ribs 9, 10 and 11, at least one iron 12 being provided in each of the ribs, the bars embedded in the peripheral stiffening rib 11 having a larger section as that of the irons embedded in the other ribs 9 and 10, said irons 12 are situated substantially at the same level and are joined together by welding to form a trellis.

La dalle 1 illustrée aux dessins est une dalle carrée et les deux directions 6 et 7 sont parallèles à deux côtés contigus de la dalle. Les sections des cavités 5, prises parallèlement à la face supérieure 2 de la dalle ont la même forme que la section correspondante de la dalle. Les sections des nervures de raidissement 9, 10 et 11 par des plans perpendiculaires aux directions précitées sont sensiblement en forme de trapèzes isocèles, la petite base de ces trapèzes coincidant avec la face inférieure 4 de la dalle.The slab 1 illustrated in the drawings is a square slab and the two directions 6 and 7 are parallel to two contiguous sides of the slab. The sections of the cavities 5, taken parallel to the upper face 2 of the slab have the same shape as the corresponding section of the slab. The sections of the stiffening ribs 9, 10 and 11 by planes perpendicular to the aforementioned directions are substantially in the form of isosceles trapezoids, the small base of these trapezoids coinciding with the lower face 4 of the slab.

Comme montré aux figures 1 et 2, la section des nervures de raidissement 9, 10 et 11, par les plans perpendiculaires susdits, est sensiblement constante sur toute leur longueur.As shown in Figures 1 and 2, the section of the stiffening ribs 9, 10 and 11, by the above perpendicular planes, is substantially constant over their entire length.

Pour réduire le poids de la dalle tout en lui conservant une capacité portanteconve- nable, ladite dalle peut présenter, comme montré aux figures 3 et 4, une nervure de raidissement périphérique 11 qui a une section sensiblement constante sur tout le pourtour de la dalle, tandis que la section des nervures 9 et 10 s'étendant à l'intérieur de la nervure périphérique 10 est variable, la dimension de ces nervures 9 et 10, correspondant à la hauteur des trapèzes susdits, décroissant régulièrement de la périphérie de la dalle vers le centre de cette dernière.To reduce the weight of the slab while retaining a suitable carrying capacity, said slab can have, as shown in FIGS. 3 and 4, a peripheral stiffening rib 11 which has a substantially constant section around the entire periphery of the slab, while the section of the ribs 9 and 10 extending inside the peripheral rib 10 is variable, the dimension of these ribs 9 and 10, corresponding to the height of the abovementioned trapezoids, decreasing regularly from the periphery of the slab towards the center of the latter.

Outre les fers 12, l'armature du béton comprend avantageusement des fibres métalliques, telles que fibres d'acier, non représentées, noyées dans la totalité de la masse de bâon constituant la dalle.In addition to the irons 12, the reinforcement of the concrete advantageously comprises metallic fibers, such as steel fibers, not shown, embedded in the entire mass of the stick constituting the slab.

Les fonds 13 des cavités 5 sont sensiblement plans et parallèles à la face supérieure 2 de la dalle. Pour augmenter la résistance au poinçonnement de la dalle à l'endroit des cavités 5, les fonds 13 de ces dernières sont pourvus de nervures de raidissement 14 s'étendant à partir de leur centre vers les parois 8 des cavités. Comme montré aux dessins, les nervures de raidissement 14 présentées par les fonds des cavités peuvent être sensiblement parallèles aux deux directions 6 et 7 précitées, ces nervures 14 ayant, par exemple, une section constante en forme de triangle isocèle, la base de ce dernier coïncidant avec le fond 13 de la cavité 5.The bottoms 13 of the cavities 5 are substantially planar and parallel to the upper face 2 of the slab. To increase the resistance to punching of the slab at the location of the cavities 5, the bottoms 13 of the latter are provided with stiffening ribs 14 extending from their center towards the walls 8 of the cavities. As shown in the drawings, the stiffening ribs 14 presented by the bottoms of the cavities can be substantially parallel to the two directions 6 and 7 above, these ribs 14 having, for example, a constant section in the form of an isosceles triangle, the base of the latter coinciding with the bottom 13 of the cavity 5.

Dans la dalle suivant l'invention, la nervure de raidissement périphérique 11 peut comprendre un élément de renfort 15 associé, sur tout le pourtour de la dalle, soit à au moins une partie de la hauteur des parois latérales 3 de la dalle, soit à au moins cete partie et à au moins une partie des faces 20 de ladite nervure périphérique, cet élément 15, destiné à résister aux chocs, étant rigide et réalisé en métal, en matière plastique ou encore en béton de résines. Comme montré à la figure 5, cet élément 15 est constitué de profilés 16, assemblés à l'endroit des arêtes latérales 17 de la dalle, qui présentent deux ailes 18 et 19, les ailes 18 constituant les parois latérales 3 de la dalle, tandis que leurs ailes 19 constituent une partie des faces 20 de la nervure périphérique 11 qui sont parallèles à la face supérieure 2 de la dalle.In the slab according to the invention, the peripheral stiffening rib 11 may comprise a reinforcing element 15 associated, around the entire periphery of the slab, either at least part of the height of the side walls 3 of the slab, or at at least this part and at least part of the faces 20 of said peripheral rib, this element 15, intended to withstand shocks, being rigid and made of metal, plastic or even resin concrete. As shown in Figure 5, this element 15 consists of profiles 16, assembled at the location of the side edges 17 of the slab, which have two wings 18 and 19, the wings 18 constituting the side walls 3 of the slab, while that their wings 19 constitute a part of the faces 20 of the peripheral rib 11 which are parallel to the upper face 2 of the slab.

Toujours suivant l'invention et comme montré à la figure 6, la nervure périphérique 11 est garnie, à l'endroit des arêtes latérales 17 et de part et d'autre de celles-ci, d'éléments de renfort 15 constitués chacun de deux sections 21 et 22, sensiblement égales, d'un profilé rigide, en métal, en matière plastique ou en béton de résines, présentant deux ailes 18 et 19. Ces sections 21 et 22 sont réunies entre elles par une de leurs extrémités et leurs ailes 18 et 19 s'étendent, au voisinage des arêtes 17 de la dalle, sur toute la hauteur des faces latérales 3 de cette dernière et sur une partie de la largeur des faces 20 précitées de la nervure périphérique 11.Still according to the invention and as shown in FIG. 6, the peripheral rib 11 is lined, at the location of the lateral edges 17 and on either side thereof, of reinforcing elements 15 each consisting of two sections 21 and 22, substantially equal, of a rigid profile, made of metal, plastic or resin concrete, having two wings 18 and 19. These sections 21 and 22 are joined together by one of their ends and their wings 18 and 19 extend, in the vicinity of the edges 17 of the slab, over the entire height of the lateral faces 3 of the latter and over part of the width of the faces 20 specified tees of the peripheral rib 11.

Comme montré aux figures 3 et 4, la dalle suivant l'invention présente avantageusement, au niveau de sa face supérieure 2, une couche de matière 24, résistant à l'usure, qui fait corps avec le béton constituant la dalle. Cette couche de matière 24 peut être constituée par un béton connu sous le nom de béton type terrazzo. La face supérieure 2 est avantageusement polie pour donner à la dalle l'aspect d'un carrelage, ainsi que pour faciliter l'entretien du faux-plancher. On pourrait également prévoir une dalle constituée, sur toute son épaisseur, de béton type terrazzo.As shown in Figures 3 and 4, the slab according to the invention advantageously has, at its upper face 2, a layer of material 24, wear resistant, which is integral with the concrete constituting the slab. This layer of material 24 can be constituted by a concrete known by the name of terrazzo type concrete. The upper face 2 is advantageously polished to give the slab the appearance of a tiling, as well as to facilitate the maintenance of the raised floor. One could also provide a slab made, over its entire thickness, of terrazzo type concrete.

Divers essais ont été réalisés sur des dalles conformes à l'invention, dont les dimensions et la composition sont les suivantes :

  • Dalle de forme carrée, ayant les arêtes de sa face supérieure 2 qui ont une longueur de l'ordre de 60 cm , l'épaisseur de la dalle étant de l'ordre de 4 cm, les cavités 5 ayant leur orifice 23 en forme de carré dont le coté a une longueur d'environ 9 cm, les nervures de raidissement 9, 10 et 11 ayant, au niveau de la face inférieure 4 de la dalle, une largeur de l'ordre de 2,5 cm, tandis que la profondeur des cavités 5 est de l'ordre de 2,5 cm, les fers 12 constituant l'armature susdite et noyés dans les nervures de raidissement 9, 10 et 11 ayant un diamètre de l'ordre de 0,8 cm pour la nervure périphérique 11 et de l'ordre de 0,4 cm pour les autres nervures 9 et 10.
Various tests have been carried out on slabs in accordance with the invention, the dimensions and composition of which are as follows:
  • Slab of square shape, having the edges of its upper face 2 which have a length of the order of 60 cm, the thickness of the slab being of the order of 4 cm, the cavities 5 having their orifice 23 in the form of square whose side has a length of approximately 9 cm, the stiffening ribs 9, 10 and 11 having, at the level of the lower face 4 of the slab, a width of the order of 2.5 cm, while the depth of the cavities 5 is of the order of 2.5 cm, the irons 12 constituting the aforementioned reinforcement and embedded in the stiffening ribs 9, 10 and 11 having a diameter of the order of 0.8 cm for the rib peripheral 11 and of the order of 0.4 cm for the other ribs 9 and 10.

Le béton qui constitue cette dalle est composé, par m3, d'environ 875 litres de billes de verre expansé de granulométrie 2/6, d'environ 493 kg de sable du Rhin de granulométrie 0/2, d'environ 502 kg de ciment Portland 50, d'environ 5 kg de super fluidifiant, sans fibres d'acier ou avec environ 26 kg de fibres d'acier dont le diamètre est del' ordre de 0,4 mm et la longueur de l'ordre de 40 mm et d'environ 187 litres d'eau.The concrete that constitutes this slab is composed, per m 3 , of approximately 875 liters of expanded glass beads of particle size 2/6, of approximately 493 kg of Rhine sand of particle size 0/2, of approximately 502 kg of Portland cement 50, approximately 5 kg of super-fluidizer, without steel fibers or with approximately 26 kg of steel fibers whose diameter is of the order of 0.4 mm and the length of which is of the order of 40 mm and of approximately 187 liters of water.

Essai 1Trial 1

sans fibres métalliques poids de la dalle non séchée : 16,3 kg poids volumique sec des billes de verre : 210 kg/m poids volumique sec du béton : 1.310 kg/m résistance au poinçonnement au centre d'une cavité (surface de 9 cm ) : 524 kg résistance à la flexion du bord (surface de chargement de 9 cm ) : 406 kg résistance à la flexion de la dalle complète (surface de chargement de 121 cm2) : 1.070 kgwithout metallic fibers weight of the undried slab: 16.3 kg dry density of the glass balls: 21 0 kg / m dry density of the concrete: 1.31 0 kg / m resistance to punching in the center of a cavity (surface of 9 cm): 524 kg resistance to bending of the edge (9 cm loading surface): 406 kg resistance to bending of the complete slab (121 cm 2 loading surface): 1.07 0 kg

Essai 2Trial 2

avec fibres métalliques poids de la dalle non séchée : 16,5 kg poids volumique sec des billes de verre :210 kg/m3 poids volumique sec du béton : 1.360 kg/m3 résistance à la flexion du bord : 579 kg résistance au poinçonnement : 580 kg résistance à la flexion de la dalle : 1.010 kgwith metallic fibers weight of the undried slab: 16.5 kg dry density of the glass balls: 210 kg / m 3 dry density of the concrete: 1. 360 kg / m 3 resistance to bending of the edge: 579 kg resistance on punching: 580 kg resistance to bending of the slab: 1.010 kg

Essai 3Trial 3

avec fibres métalliques, dans un premier cas, sans nervures de raidissement 14 dans les cavités 5, dans le deuxième cas avec nervures de raidissement 14 telles qu'illustrées aux dessins :

  • résistance au poinçonnement au centre de l'évidement :
  • sans nervures 14 : 482 kg
  • avec nervures 14 : 625 kg
with metallic fibers, in the first case, without stiffening ribs 14 in the cavities 5, in the second case with stiffening ribs 14 as illustrated in the drawings:
  • resistance to punching in the center of the recess:
  • without ribs 14: 482 kg
  • with ribs 14: 625 kg

Essai 4Trial 4

Deux dalles avec le même profil au niveau de leur face inférieure 4, tel qu'illustré aux dessins, ont été réalisées

  • 1) avec un béton lourd ordinaire armé
  • 2) avec le béton léger armé à base de billes de verre expansé et on a comparé leur poids, 24 heures après fabrication
  • 1) le poids de la dalle en béton lourd : 24,2 kg
  • 2) le poids de la dalle en béton léger : 16,3 kg
Two tiles with the same profile at their lower face 4, as illustrated in the drawings, have been produced
  • 1) with ordinary heavy reinforced concrete
  • 2) with light reinforced concrete based on expanded glass beads and their weight was compared, 24 hours after manufacture
  • 1) the weight of the heavy concrete slab: 24.2 kg
  • 2) the weight of the light concrete slab: 16.3 kg

Il doit être entendu que l'invention n'est nullement limitée aux formes de réalisation décrites et que bien des modifications peuvent être apportées à ces dernières sans sortir du cadre du présent brevet.It should be understood that the invention is in no way limited to the embodiments described and that many modifications can be made to these without departing from the scope of this patent.

Claims (22)

1. Dalle (1) autoportante et amovible en béton destinée à être supportée au voisinage de ses angles pour la réalisation d'un faux-plancher modulaire, ladite dalle étant caractérisée en ce qu'elle est réalisée en béton armé, les faces supérieure (2) et latérales (3) de la dalle étant pla- nes, cette dernière présentant, à partir de sa face inférieure (4), des cavités (5), régulièrement réparties et alignées suivant deux directions transversales, agencées pour que leurs parois latérales (8) délimitent, d'une part, avec la face inférieure (4) de la dalle, des nervures de raidissement (9,10) s'étendant et se croisant suivant les deux directions susdites et, d'autre part, avec les faces latérales(3) de la dalle et la face inférieure (4) de celle-ci, une nervure de raidissement périphérique (11).1. Freestanding and removable concrete slab (1) intended to be supported in the vicinity of its angles for the production of a modular raised floor, said slab being characterized in that it is made of reinforced concrete, the upper faces ( 2) and side walls (3) of the slab being pla - nes, the latter having, from its underside (4), cavities (5), regularly distributed and aligned in two transverse directions, arranged so that their side walls (8) delimit, on the one hand, with the lower face (4) of the slab, stiffening ribs (9,10) extending and crossing in the two above directions and, on the other hand, with the lateral faces (3) of the slab and the lower face (4) of the latter, a peripheral stiffening rib (11). 2. Dalle suivant la revendication 1, caractérisée en ce que le béton est un béton léger, d'un poids volumique sec compris entre 850 et 1500 kg/m3.2. Slab according to claim 1, characterized in that the concrete is a light concrete, with a dry density between 850 and 1500 kg / m3. 3. Dalle suivant l'une ou l'autre des revendications 1 et 2, caractérisée en ce que les fers (12) constituant l'armature de la dalle sont noyés dans les nervures de raidissement (9, 10,11) précitées, au moins un fer (12) étant prévu dans chacune des nervures, les fers noyés dans la nervure de raidissement périphérique (11) ayant une section plus importante que celle des fers noyés dans les autres nervures (9,10).3. Slab according to either of Claims 1 and 2, characterized in that the irons (12) constituting the reinforcement of the slab are embedded in the above-mentioned stiffening ribs (9, 10, 11), at at least one iron (12) being provided in each of the ribs, the irons embedded in the peripheral stiffening rib (11) having a larger section than that of the irons embedded in the other ribs (9,10). 4. Dalle suivant la revendication 3, caractérisée en ce que les fers (12) constituant l'armature de la dalle sont situés, sensiblement au même niveau et sont réunis entre eux par soudure pour constituer un treillis.4. Slab according to claim 3, characterized in that the irons (12) constituting the reinforcement of the slab are located, substantially at the same level and are joined together by welding to form a trellis. 5. Dalle suivant l'une quelconque des revendications 1 à 4, caractérisée en ce que les deux directions précitées sont parallèles à deux côtés contigus de la dalle.5. Slab according to any one of claims 1 to 4, characterized in that the two aforementioned directions are parallel to two contiguous sides of the slab. 6. Dalle suivant la revendication 5, caractérisée en ce que les sections des cavités (5) prises parallèlement à la face supérieure (2) de la dalle ont la même forme que cette face supérieure.6. Slab according to claim 5, characterized in that the sections of the cavities (5) taken parallel to the upper face (2) of the slab have the same shape as this upper face. 7. Dalle suivant la revendication 6, caractérisée en ce que les sections des nervures de raidissement (9, 10 et 11) par des plans perpendiculaires aux directions précitées sont sensiblement en forme de trapèzes isocèles, la petite base de ces trapèzes coïncidant avec la face inférieure (4) de la dalle.7. Slab according to claim 6, characterized in that the sections of the stiffening ribs (9, 10 and 11) by planes perpendicular to the above directions are substantially in the form of isosceles trapezoids, the small base of these trapezoids coinciding with the face lower (4) of the slab. 8. Dalle suivant la revendication 7, caractérisée en ce que la section des nervures de raidissement (9, 10 et 11) est sensiblement constante sur toute leur longueur.8. Slab according to claim 7, characterized in that the section of the stiffening ribs (9, 10 and 11) is substantially constant over their entire length. 9. Dalle suivant la revendication 7, caractérisée en ce que la section de la nervure de raidissement périphérique (11) est sensiblement constante sur tout le pourtour de la dalle tandis que la section des nervures (9,10) s'étendant à l'intérieur de la nervure périphérique est variable, la dimension de ces nervures correspondant à la hauteur des trapèzes susdits décroissant régulièrement de la périphérie de la dalle vers le centre de cette dernière.9. Slab according to claim 7, characterized in that the section of the peripheral stiffening rib (11) is substantially constant over the entire periphery of the slab while the section of the ribs (9,10) extending to the inside the peripheral rib is variable, the dimension of these ribs corresponding to the height of the abovementioned trapezoids decreasing regularly from the periphery of the slab towards the center of the latter. 10. Dalle suivant l'une quelconque des revendications 1 à 9, caractérisée en ce que l'armature du béton qui constitue la dalle comprend des fibres.10. Slab according to any one of claims 1 to 9, characterized in that the reinforcement of the concrete which constitutes the slab comprises fibers. 11. Dalle suivant la revendication 10, caractérisée en ce que les fibres susdites sont métalliques, telles que fibres d'acier.11. Slab according to claim 10, characterized in that the above fibers are metallic, such as steel fibers. 12. Dalle suivant l'une quelconque des revendications 1 à 11, caractérisée en ce que les fonds (13) des cavités (5) sont sensiblement plans et parallèles à la face supérieure (2) de la dalle.12. Slab according to any one of claims 1 to 11, characterized in that the bottoms (13) of the cavities (5) are substantially plane and parallel to the upper face (2) of the slab. 13. Dalle suivant la revendication 12, caractérisée en ce que les fonds (13) des cavités13. Slab according to claim 12, characterized in that the bottoms (13) of the cavities (5) sont pourvus de nervures de raidissement (14) s'étendant à partir de leur centre vers les parois latérales (8) des cavités.(5) are provided with stiffening ribs (14) extending from their center towards the side walls (8) of the cavities. 14. Dalle suivant la revendication 13, caractérisée en ce que ces nervures de raidissement (14) présentées par les fonds des cavités sont sensiblement parallèles aux deux directions précitées.14. Slab according to claim 13, characterized in that these stiffening ribs (14) presented by the bottoms of the cavities are substantially parallel to the two directions mentioned above. 15. Dalle suivant l'une ou l'autre des revendications 13 et 14, caractérisée en ce que les nervures de raidissement (14) ont une section constante.15. Slab according to either of claims 13 and 14, characterized in that the stiffening ribs (14) have a constant section. 16. Dalle suivant la revendication 15, caractérisée en ce que la section des nervures (14) par un plan perpendiculaire aux directions précitées est en forme de triangle isocèle, la base de ce dernier coïncidant avec le fond de la cavité.16. Slab according to claim 15, characterized in that the section of the ribs (14) by a plane perpendicular to the directions mentioned above is in the form of an isosceles triangle, the base of the latter coinciding with the bottom of the cavity. 17. Dalle suivant l'une quelconque des revendications 1 à 16, caractérisée en ce que la nervure de raidissement périphérique (11) est garnie, sur au moins une partie des faces latérales (3) de la dalle d'éléments de renfort (l5), rigides et résistant aux chocs, tels qu'éléments réalisés en métal, matière plastique, béton de résine.17. Slab according to any one of claims 1 to 16, characterized in that the peripheral stiffening rib (11) is lined, on at least part of the lateral faces (3) of the slab of reinforcing elements (l5 ), rigid and impact resistant, such as elements made of metal, plastic, resin concrete. 18. Dalle suivant la revendication 17, caractérisée en ce que les éléments de renfort (15) s'étendent sur au moins une partie des faces (20) de la nervure périphérique (11) parallèles à la face supérieure (2) de la dalle.18. Slab according to claim 17, characterized in that the reinforcing elements (15) extend over at least part of the faces (20) of the peripheral rib (11) parallel to the upper face (2) of the slab . 19. Dalle suivant l'une quelconque des revendications 1 à 18, caractérisée en ce qu'elle présente, au moins au niveau de sa face supérieure19. Slab according to any one of claims 1 to 18, characterized in that it has, at least at its upper face (2), une couche de matière (24), résistant à l'usure, faisant corps avec le béton constituant la dalle et telle qu'un béton généralement connu sous le nom de béton type terrazzo.(2), a layer of material (24), resistant to wear, being integral with the concrete constituting the slab and such as a concrete generally known under the terrazzo type concrete. 20. Dalle suivant l'une quelconque des revendications 1 à 19, caractérisée en ce que sa face supérieure (2) est polie.20. Slab according to any one of claims 1 to 19, characterized in that its upper face (2) is polished.
EP84201312A 1983-09-21 1984-09-12 Self-supporting slab for a false floor Withdrawn EP0135240A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE211562 1983-09-21
BE211562 1983-09-21

Publications (2)

Publication Number Publication Date
EP0135240A2 true EP0135240A2 (en) 1985-03-27
EP0135240A3 EP0135240A3 (en) 1986-03-19

Family

ID=3843682

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84201312A Withdrawn EP0135240A3 (en) 1983-09-21 1984-09-12 Self-supporting slab for a false floor

Country Status (1)

Country Link
EP (1) EP0135240A3 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2181171A (en) * 1985-09-27 1987-04-15 Intek Floors Ltd Concrete slab for a false or platform floor having strengthening ribs on the underside
EP0279278A2 (en) * 1987-02-19 1988-08-24 Mahle Gmbh Frame for a supported flooring panel of sectional false floors, especially for corners
GB2202248A (en) * 1987-02-06 1988-09-21 John Joseph Nash Insulating board with raised rib on one face at the periphery
GB2614906A (en) * 2022-01-24 2023-07-26 Dideco Ltd Composite floor construction

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3295272A (en) * 1963-08-07 1967-01-03 Furukawa Casting Company Ltd Raised floor construction
FR1523900A (en) * 1967-05-24 1968-05-03 Const Metalliques M G Sa Des Adjustable raised floor
CA854940A (en) * 1967-10-02 1970-11-03 H. Bruce James Construction panel and method of producing same
DE2307815A1 (en) * 1973-02-16 1974-09-05 Kiss G H FLOOR CONSTRUCTION
FR2339036A1 (en) * 1976-01-12 1977-08-19 Donn Prod Inc FLOOR PANEL
GB2030630A (en) * 1978-09-29 1980-04-10 Rintoul Pty Ltd Floor Tile
FR2517714A1 (en) * 1981-12-09 1983-06-10 Harnois Georges Planar surface for e.g. tennis court - comprises blocks resting on vertically adjustable foundation supports
EP0145247A2 (en) * 1983-11-04 1985-06-19 C/S Constructions Specialties Limited Concrete floor panel and floor system

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3295272A (en) * 1963-08-07 1967-01-03 Furukawa Casting Company Ltd Raised floor construction
FR1523900A (en) * 1967-05-24 1968-05-03 Const Metalliques M G Sa Des Adjustable raised floor
CA854940A (en) * 1967-10-02 1970-11-03 H. Bruce James Construction panel and method of producing same
DE2307815A1 (en) * 1973-02-16 1974-09-05 Kiss G H FLOOR CONSTRUCTION
FR2339036A1 (en) * 1976-01-12 1977-08-19 Donn Prod Inc FLOOR PANEL
GB2030630A (en) * 1978-09-29 1980-04-10 Rintoul Pty Ltd Floor Tile
FR2517714A1 (en) * 1981-12-09 1983-06-10 Harnois Georges Planar surface for e.g. tennis court - comprises blocks resting on vertically adjustable foundation supports
EP0145247A2 (en) * 1983-11-04 1985-06-19 C/S Constructions Specialties Limited Concrete floor panel and floor system

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2181171A (en) * 1985-09-27 1987-04-15 Intek Floors Ltd Concrete slab for a false or platform floor having strengthening ribs on the underside
EP0219985A2 (en) * 1985-09-27 1987-04-29 Intek Floors Limited Concrete slab for a platform floor
EP0219985A3 (en) * 1985-09-27 1988-08-10 Intek Floors Limited Concrete slab for a platform floor
GB2202248A (en) * 1987-02-06 1988-09-21 John Joseph Nash Insulating board with raised rib on one face at the periphery
GB2202248B (en) * 1987-02-06 1991-04-17 John Joseph Nash Insulation board
EP0279278A2 (en) * 1987-02-19 1988-08-24 Mahle Gmbh Frame for a supported flooring panel of sectional false floors, especially for corners
EP0279278A3 (en) * 1987-02-19 1988-10-12 Mahle Gmbh Frame for a supported flooring panel of sectional false floors, especially for corners
GB2614906A (en) * 2022-01-24 2023-07-26 Dideco Ltd Composite floor construction

Also Published As

Publication number Publication date
EP0135240A3 (en) 1986-03-19

Similar Documents

Publication Publication Date Title
EP0280228B1 (en) Combined wood and concrete floor
EP1690993B1 (en) Wall with integrated formwork
FR2562837A1 (en) CONSTRUCTION COMPOSITE ELEMENTS AND METHOD FOR PRODUCING MULTI-DIRECTIONAL STRUCTURES BY FORMING AND / OR ASSEMBLING SUCH ELEMENTS
FR3002777A1 (en) STRUCTURAL / INSULATING HYBRID CONSTRUCTION BLOCK
EP2466029B1 (en) Thermally insulating plate with studs
EP0135240A2 (en) Self-supporting slab for a false floor
EP1470302B1 (en) Modular flooring system with framed tiles
EP1045089A1 (en) Masonry structure and associated reinforcement method
EP1149213B1 (en) Building slab, assembly of same and use for producing structures capable of supporting heavy loads
EP2220304A2 (en) Prefabricated modular dry-floor element, method of producing such a modular element and dry floor comprising a plurality of modular elements
FR3066514B1 (en) LOST INSULATED FORMWORK AND ASSOCIATED METHOD FOR MAKING A WALL.
BE897801A (en) Reinforced concrete block for forming false floors - contains cavities in lower face to define reinforcing ribs
EP0360682B1 (en) Expansion joint for a concrete pavement
FR2885624A1 (en) Base unit`s e.g. ground floor, lateral wall constructing method for prefabricated building, involves pouring and hardening cement material in molds delimited by panels, where material is penetrated into perforations and is solidified
FR2956422A1 (en) Metallic beam for manufacturing floor in building, has heel that is provided with interjoist support zones at both sides of lattice, and reinforcement frame that is enclosed in heel at level of support zones to locally rigidify heel
BE1011072A3 (en) Prefabricated building component and method of manufacturing same
FR2770239A1 (en) Prefabricated reinforced concrete floor slab
WO2011061414A1 (en) Support structure
FR2597907A2 (en) Externally-insulating building block
FR2530705A1 (en) Structural elements especially for the prefabrication of floors.
FR2499615A1 (en) Insulating wall covering - made of e.g. synthetic foam blocks coated with glass fibre reinforced plaster
WO2017006160A1 (en) Construction element and method for mounting such a construction element
EP3788212A1 (en) Method for manufacturing a floor, associated floor and integrated stay-type formwork element
FR3041672A1 (en) PLASTIC SWIMMING POOL HULL WITH REINFORCING ELEMENTS
EP0474543B1 (en) Light-weight self-supporting wall element

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE FR GB IT LI LU NL SE

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 19860722

RIN1 Information on inventor provided before grant (corrected)

Inventor name: VAN ACKER, ARNOLD EMIEL MARIE

Inventor name: VERMEULEN, GHISLAIN GUSTAAF AMANDUS