FR2832433A1 - Temporary floor panel for grass surfaces is made from synthetic material with transparent/translucent sections and aeration channels - Google Patents

Abstract

The temporary floor consists of panels (2) made from a synthetic and at least partially translucent or transparent material, fitted with a reinforcing element and attached supporting feet. The panel has one or more aeration channels connecting its upper and lower surfaces and allowing air to circulate. The channels have a number of branches (7') distributed over the panel in a network, with outlets (8) in the sides communicating with adjacent panels. Variants of the panel can incorporate light reactive or sun filter films.

Description

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The present invention relates to a ground covering slab for provisional flooring, this covering slab comprising at least one plate made of a synthetic material at least partially translucent or transparent and serving as a support for the passage and / or parking of people, vehicles and / or equipment, at least one reinforcing frame carrying said plate and at least one foot secured to said frame.

This type of cover slab is frequently used for the installation of temporary floors intended to support the passage and / or the parking of people and / or vehicles and / or equipment in particular to organize events such as concerts, shows on grassy fields such as, for example, football fields, racetracks. The essential function of these paving slabs is to prevent the turf from being trampled during the event and to create access paths for pedestrians on any type of terrain. Indeed, if it were not protected, the lawn would be quickly damaged, even irreparably damaged. To limit the bearing surface of the cover slab on the ground and so as to disperse the load applied on its upper face, this cover slab has feet. The lawn is thus protected for the duration of the manifestations of trampling and the weight of the paving slabs, people, vehicles and equipment.

Experience shows that the lawn is also very sensitive to the absence of light, to any excessive rise in temperature, to the lack of air, to the lack of water and that it therefore deteriorates rapidly.

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Publication EP-B-0517775 describes a covering slab which makes it possible to partially overcome these drawbacks. The plate of this covering slab is traversed by a plurality of ventilation holes which allow the passage of a certain amount of air under the covering slab. These ventilation holes are however very small in size to allow them to be overlapped by any type of shoe. Thus, despite the quantity of ventilation holes, the rate of opening of the plate remains low, of the order of 0.5%, which is clearly insufficient to, on the one hand, allow good ventilation of the lawn and, on the other hand, avoid the rise in temperature under the cover slab during, for example, sunshine phases. The plate is also made of a semi-opaque material limiting the light rays passing through it.

The present invention aims to overcome these major drawbacks by proposing a cover slab of simple construction, making it possible to guarantee the optimal passage of an air flow under the cover slab and to reduce the excessive rise in temperature under the slab recovery, especially in case of sunshine. The present invention also aims to provide a covering slab comprising indications and / or decorative patterns visible by day and / or in the dark.

To this end, the invention relates to a ground covering slab for temporary floors of the kind indicated in the preamble, characterized in that it comprises at least one ventilation channel bringing the top and the bottom of the covering slab into communication. and allowing the circulation of an air flow.

The aeration channel preferably comprises several branches distributed over the entire surface of the plate and arranged to form a network.

The aeration channel advantageously opens into at least one of the lateral edges of the covering slab so that the aeration channels of two adjacent covering slabs communicate.

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According to a preferred embodiment of the invention, the plate comprises a plurality of substantially planar elements assembled on the frame so as to delimit between them the branches of the aeration channel.

Advantageously, the aeration channel has, at least over part of its length, a width of between 2 mm and 10 mm.

The aeration channel has an open area substantially from 1 to 4% of the total area of the cover slab and preferably between 1 and 2%.

According to an alternative embodiment, the covering slab comprises at least one chute arranged to collect liquids present on the plate, this chute preferably being at least partially arranged adjacent to said ventilation channel.

In a particularly advantageous manner, the covering slab comprises means for modifying its degree of transparency to the rays in order to vary the opacity of at least part of the plate as a function of the rays which it receives, for example photo-reactive organic materials.

The covering slab advantageously comprises means for filtering the rays arranged to limit the passage of the rays through the covering slab.

The means for modifying the degree of transparency of the plate and / or the filtration means are integrated into the plate and are in at least one of the forms chosen from the group comprising at least one film, pigments.

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The film is for example integrated into the plate by overmolding.

The covering slab advantageously comprises decorative elements arranged to form patterns and / or inscriptions, the decorative elements are in at least one of the forms chosen from the group comprising at least one film, pigments.

In a particularly advantageous manner, the covering slab comprises light means arranged to illuminate it at least in part.

These light means may include light guides integrated into the plate and associated with an external light source and / or at least one groove disposed in the plate and a light garland disposed in this groove and / or photo-luminescent pigments associated with the plate.

In the latter case, the photo-luminescent pigments are preferably integrated into the plate in at least one of the forms chosen from the group comprising at least one flexible film, a paint, granules, powder, sticks, d '' a mixture of at least two of these elements.

1 L'invention concerne également un plancher provisoire de recouvrement de terrain formé d'un ensemble de dalles de recouvrement sensiblement identiques comportant chacune au moins une plaque réalisée dans une matière synthétique au moins partiellement translucide ou transparente, cette plaque servant d'appui pour le passage et/ou le stationnement de personnes, de véhicules et/ou de matériel, au moins une The covering slab preferably comprises connecting and locking means allowing the assembly of several adjacent substantially identical covering slabs.

1 The invention also relates to a provisional ground covering floor formed of a set of substantially identical covering slabs each comprising at least one plate made of an at least partially translucent or transparent synthetic material, this plate serving as a support for the passage and / or parking of people, vehicles and / or equipment, at least one

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 reinforcing reinforcement carrying the plate and at least one foot secured to the reinforcing reinforcement, the covering slabs being disposed adjacent along substantially the same plane and assembled by means of connection and locking, characterized in that these covering slabs comprise at least one ventilation channel arranged to connect the top and the bottom of the cover slabs and allow the circulation of an air flow.

The ventilation channels of the cover slabs preferably open laterally to communicate with each other.

In a particularly advantageous manner, this temporary floor comprises light means arranged to make it at least partly light.

According to an alternative embodiment, the temporary floor includes means for modifying its degree of transparency to the spokes arranged to vary the opacity of at least part of at least one of its covering slabs as a function of the radii that she receives.

According to another alternative embodiment, the temporary floor comprises means for filtering the spokes arranged to limit the passage of these spokes through at least one of the covering slabs.

According to another alternative embodiment, the temporary floor includes decorative elements arranged to form patterns and / or inscriptions.

According to yet another alternative embodiment, the temporary floor comprises light means arranged to make it at least partly light.

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- la figure 3 est une vue de dessus de la dalle de recouvrement de la figure 1, - la figure 4 est une vue de dessous de la dalle de recouvrement de la figure 1, et - la figure 5 est une vue de dessus en perspective d'un plancher formé de dalles de recouvrement de la figure 1. The present invention and its advantages will appear better in the following description of an exemplary embodiment, with reference to the accompanying drawings, in which: - Figure 1 shows a side view of the covering slab according to the invention, - Figure 2 is an enlarged perspective view of part of the covering slab in FIG. 1,

- Figure 3 is a top view of the cover slab of Figure 1, - Figure 4 is a bottom view of the cover slab of Figure 1, and - Figure 5 is a top view in perspective of a floor formed by covering slabs of FIG. 1.

With reference to the figures, the invention relates to a covering slab 1 intended to be assembled with other substantially identical covering slabs to form a temporary floor 10 used during events, in particular for covering the grassed areas of a ground and the protect from the passage and / or parking of vehicles, people, equipment. This covering slab can advantageously include elements intended to form, for example, patterns and / or inscriptions, for decorative and / or advertising purposes, visible by day and / or in the dark.

With particular reference to FIG. 1, this covering slab 1 comprises a plate 2 serving as a support, a reinforcement frame 3 carrying the plate 2 and at least one foot 4 secured to the reinforcement frame 3.

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The plate 2 is substantially flat and made of a synthetic material at least partially translucent or transparent to allow the rays to pass. As illustrated in FIG. 2, it may include on its upper face non-slip means such as raised pins 5, hollow markings or any other equivalent means allowing people and vehicles parked or traveling on the cover slabs 1, not to slip, especially when the cover slab 1 is wet. The plate 2 has a substantially constant thickness of 2 to 8 mm, for example around 5 mm.

The reinforcing frame 3 carrying the plate 2 and illustrated in particular in Figure 4 is for example in the form of a grid formed of ribs 6, 6 'substantially perpendicular. This reinforcing reinforcement 3 is integral with the plate 2. The reinforcing reinforcement 3 and the plate 2 can be obtained for example by molding in a single operation, by overmolding or by molding of two parts, these parts being secured by gluing.

The cover slab 1 comprises in the example shown a plurality of feet 4 disposed under the reinforcement frame 3 in order to carry the cover slab 1 and to distribute the forces on the ground. Referring to Figure 4, the cover slab 1 has thirteen feet staggered. If the plate 2 and the reinforcement frame 3 are obtained by molding in a single operation, the feet 4 can be added under the reinforcement frame 3 and fixed by gluing, screwing, overmolding or by any other equivalent means. The reinforcing frame 3 may include threaded holes (not shown) allowing the feet 4 to be fixed by screwing. If the plate 2 and the reinforcement armature 3 are obtained by molding in two operations, the feet 4 can be molded at the same time as the reinforcement armature 3.

As illustrated in particular in FIG. 2, the plate 2 comprises at least one ventilation channel 7 bringing the top and the bottom of the slab into communication.

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 covering 1 and whose main function is to allow the circulation of a flow under the covering slab 1 to aerate the grass permanently. The surface of the ventilation channel 7 represents substantially from 1 to 4% of the total surface of the cover slab 1 and preferably from 1 to 2%, so that the lawn located under the cover slab 1 can receive a quantity sufficient air and is not in deficit of air. A secondary function of the ventilation channel 7 is to allow part of the rain and / or sprinkling water to pass through the cover slab 1, thus allowing the supply of water to the lawn.

This ventilation channel 7 has for example a width of between 2 mm and 10 mm and for example equal to around 4 mm. The walls of the ventilation channel 7 can be parallel, substantially vertical, inclined or not parallel to form a cone oriented upwards or downwards, or even a double cone. The choice of the width of the ventilation channel 7 and the type of wall is adapted as a function of the conditions of use of the covering slabs 1.

The ventilation channel 7 can be in the form of a continuous line circulating over the entire surface occupied by the plate 2 and dividing it into independent elements or not. The ventilation channel 7 may include tabs (not shown) connecting said elements to each other, for example to solidify the plate 2.

With reference to the example shown in FIGS. 3, 4 and 5, the plate 2 comprises a plurality of substantially planar elements 2 assembled on the reinforcement armature 3 and delimiting between them the branches 7 ′ of the network constituting the channel 7. These elements 2 ′ may be of different color and / or appearance.

According to the variant embodiment illustrated in FIGS. 3 and 4, the aeration channel 7 is in the form of a network comprising several branches 7 ′ distributed over

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 the entire surface of the plate 2. This network can be arranged to form a pattern such as for example adjacent balloons as illustrated, or any other pattern that can form, for example messages. The branches 7 ′ of this network can be interrupted in the plate 2 or lead to at least one communication orifice 8 in at least one of the lateral edges of the covering slab 1. This communication orifice 8 is arranged so that the ventilation channels 7 of two adjacent covering slabs 1 communicate.

mm et une profondeur comprise entre 2 mm et 8 mm et par exemple égale à environ 3 mm Selon une autre variante de réalisation, la dalle de recouvrement 1 comporte des moyens de modification du degré de transparence aux rayons de la plaque 2. Ces moyens permettent de faire varier l'opacité et éventuellement la couleur d'au moins une partie de la plaque 2 en fonction des rayons qu'elle reçoit. Ces rayons peuvent être de type lumineux, infrarouge ou ultraviolet. De manière générale, les ultraviolets ne traversent pas la plaque 2 si bien qu'ils n'ont pas d'effet sur le gazon situé sous la dalle de recouvrement 1. Les rayons lumineux, passent au travers de la plaque 2 translucide pour garantir la photosynthèse du gazon. Les rayons infrarouges passent In the embodiment illustrated in particular in FIGS. 2 and 3, the plate 2 comprises a trough 9 made hollow on the plate 2 and intended to collect liquids present on the plate 2. These liquids can come from rain or for example from products accidentally paid during the event. The chute 9 prevents these liquids from stagnating on the cover slab 1 at the risk of causing slipping. Depending on requirements, the chute 9 may or may not have a discharge orifice (not shown) allowing the liquid to flow on the ground. This chute 9 can be disposed adjacent to said ventilation channel 7 over all or part of its length. It can also be provided on each side of the ventilation channel 7 and have a width of between 2 mm and 15 mm and preferably equal to approximately 7

mm and a depth between 2 mm and 8 mm and for example equal to approximately 3 mm. According to another alternative embodiment, the covering slab 1 comprises means for modifying the degree of transparency to the radii of the plate 2. These means allow to vary the opacity and possibly the color of at least part of the plate 2 as a function of the rays which it receives. These rays can be of the light, infrared or ultraviolet type. Generally, the ultraviolet rays do not pass through the plate 2 so that they have no effect on the lawn located under the covering slab 1. The light rays pass through the translucent plate 2 to guarantee the photosynthesis of the lawn. Infrared rays pass

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 also through the plate 2 and are moreover, due to the rise in temperature which they cause, harmful to the lawn. The cover slab 1 then functions as an infrared trap, the grass located below being largely protected from the negative effects of infrared rays while taking advantage of the light rays which are essential to it.

The means for modifying the degree of transparency to the radii of the covering slab 1 comprise, for example, a photo-reactive material directly integrated into said plate 2, for example in the form of particles such as pigments or a photo-reactive film (not shown) containing photoreactive organic matter. This photo-reactive film is associated with the plate 2, for example during the manufacture of the cover slab 1 by overmolding of the plate 2 on the photo-reactive film. The photo-reactive film is thus placed on or under the plate 2. This photo-reactive film may be made of crystal polypropylene, of polyethylene and may include decorative patterns and / or inscriptions for decorative and / or advertising purposes, for example produced by means of inks. The photo-reactive film is for example photochromic and changes its shade under the effect of infrared rays, passing for example from a yellow shade to a more opaque shade such as for example green.

In the case of pigments, these are for example incorporated into the mixture used for molding the cover plate 1.

According to another alternative embodiment, the covering slab 1 comprises means for filtering (not shown) the rays of the sun limiting the passage of the rays through the covering slab 1. These filtration means are for example produced by means of 'A filtration film comprising a screen formed for example of an ink. This filtration film can be made of polyolefin, for example polyethylene, polypropylene or blend and can also include decorative patterns and / or inscriptions for decorative and / or advertising purposes.

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According to yet another alternative embodiment, the covering slab 1 comprises light means for lighting it at least in part.

In a first embodiment of this variant and with reference to FIG. 2, these light means may include light guides 13 integrated into the plate 2 for example during the molding phase and formed for example by a bead.

These light guides 13 are associated with an external or integrated light source (not shown) and make it possible to diffuse the light in the covering slab 1 along the light guide 13 and in the adjacent covering slabs 1.

In a second embodiment of this variant and also with reference to FIG. 2, the light means comprise at least one groove 14 arranged for example under the plate 2 to receive a light chain 15. This light chain 15 can be autonomous or require a connection which may, if necessary, be made by connecting light garlands 15 to one or more sources of electrical power. The use of several electrical power sources makes it possible in particular to selectively illuminate the plates by group or individually.

In a third embodiment, not shown, of this variant, the light means comprise photo-luminescent pigments integrated into the plate 2, for example in the form of a flexible film, of a paint, of granules, of powder, of sticks for example contained directly in the mixture used for the manufacture of the covering slab 1 or attached to the plate 2. Photoluminescent pigments are known to have the capacity when they are subjected to a white, visible and natural light source such as sun, to store this luminosity and to restore it in a perceptible and prolonged way in time after

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 disappearance of said light source. These photo-luminescent pigments used for this type of application are non-toxic, non-radioactive and consist, for example, of natural zinc sulfide, the remanence of which is effective for at least eight to ten hours. If the light means are in the form of a flexible film, this is for example formed of three layers of distinct materials associated with each other, a first white reflective layer, a second photo-luminescent layer containing the pigments and a third transparent and stabilizing layer of ultraviolet rays.

The use of these photo-luminescent pigments thus makes it possible for example to integrate various indications and / or patterns into the covering plates 1. The patterns can for example be of the "decorative" type and the safety type indications such as the direction of evacuation. These indications and / or patterns can be in the form of arrows, solid lines, broken lines or any another suitable form. During the day, the photo-luminous pigments store the luminosity by trapping the negative ions in the zinc sulfide crystals. When the cover slabs 1 are in the dark, the electrical process is instantly reversed, giving the luminescent property of the material by transforming negative ions into positive ions. During night shows and in the event of a lighting problem, the cover slabs are therefore illuminated, thus making it possible, for example, to indicate emergency exits or instructions to respect.

This embodiment has an additional important advantage. Indeed, because in the dark the photo-luminescent pigments return the luminosity accumulated during the day, the photosynthesis process of the lawn continues despite the darkness.

According to yet another alternative embodiment, the covering slab 1 comprises decorative elements arranged to form, for example patterns, inscriptions,

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 for advertising or decorative purposes and visible during the day and / or in the dark. These decorative elements include for example pigments inserted into the mixture used for plate molding, inserts such as films or the like. The cover plates can thus be entirely tinted or comprise portions of patterns or whole patterns.

It is understood that these different embodiments can be combined with any other type of ground covering slab.

In known manner, the covering slabs 1 comprise connecting and locking means allowing the assembly of the covering slabs 1 between them to form a temporary floor 10 as illustrated in FIG. 5. Each covering slab 1 can thus have on each of its lateral edges at least one pawl 11 and a complementary housing 12. The pawl 11 is movable in rotation relative to a substantially vertical axis formed by a housing provided in the plate 2.

The pivot axis of the pawl 11 is accessible from above the plate 2 and comprises for example a slot allowing it to be pivoted by means for example of a screwdriver. The connecting and locking means are arranged so that the pawl 11 and complementary housing 12 of a side edge of a cover slab 1 come opposite respectively of a complementary housing (not shown) and a pawl (not shown) of another adjacent covering slab 1. In this way, when the pawl 11 is pivoted, it comes to be housed in the complementary housing and when the pawl is pivoted, it comes to be housed in the complementary housing 12. The adjacent covering slabs 1 are thus simply and quickly assembled together with others and can easily be disassembled.

It is obvious that the different embodiments described above can be used separately or in combination.

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FIG. 5 illustrates a provisional ground covering floor 10 formed of a set of covering slabs 1 of which only four are shown. These cover slabs 1 are assembled by the connecting and locking means and each comprise ventilation channels 7 opening respectively into communication orifices 8. These communication orifices 8 are arranged opposite two by two to make the channels communicate corresponding ventilation aids and thus form an aeration network extending between the covering slabs 1. This communication between aeration channels 7 makes it possible to promote the circulation of the air flow for example when part of the slabs of cover 1 is in the shade and another part is in the sun.

The temporary floor 10 may include the light means associated with each covering slab 1. With these light means, it is thus possible to illuminate part or all of the surface of the floor 10 and thus obtain, for example, a pattern. This pattern will be traced by means of light guides 13 and / or light garlands 15, photo-luminescent pigments. The light means can be combined and used selectively for example by illuminating only part of the covering slabs 1 constituting the temporary floor 10.

Similarly, the temporary floor 10 may include decorative elements forming, for example patterns, inscriptions for decorative and / or advertising purposes visible by day and / or in the dark. Part or all of the cover plates 1 may include these decorative elements. It is thus possible to form a decoration by judiciously assembling cover plates 1 comprising decorative elements and cover plates 1 not including any.

This description clearly shows that the invention makes it possible to fulfill the goals set, in particular to protect the grassy areas from being trampled while preserving the

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 growth and quality of the turf through optimal air circulation and temperature limitation under the cover slab. The invention also makes it possible to produce temporary floors comprising indications and / or patterns visible in particular in the dark, thus making it possible to add to these temporary floors an aesthetic and / or safe function.

The present invention is not limited to the embodiments described but extends to any modification and variant obvious to a person skilled in the art while remaining within the scope of the protection defined in the appended claims.

Claims (27)

Claims 1. Covering slab (1) of land for temporary floors, said covering slab (1) comprising at least one plate (2) made of a synthetic material at least partially translucent or transparent and serving as a support for the passage and / or the parking of people, vehicles and / or equipment, said covering slab (1) also comprising at least one reinforcing reinforcement (3) carrying said plate (2) and at least one foot (4) integral with said reinforcing reinforcement (3), characterized in that it comprises at least one ventilation channel (7) arranged to bring the top and the bottom of said covering slab (1) into communication and allow the flow of a flow air. 2. Covering slab (1) according to claim 1, characterized in that said aeration channel (7) comprises several branches (7 ') distributed over the entire surface of said plate (2) and arranged to form a network. 3. Covering slab (1) according to claim 1, characterized in that said ventilation channel (7) opens into at least one of the lateral edges of said covering slab (1). 4. Cover slab (1) according to claim 3, characterized in that said communication orifice (8) is arranged so that the ventilation channels (7) of two adjacent cover slabs (1) communicate. 5. Cover slab (1) according to claim 2, characterized in that said plate (2) comprises a plurality of substantially planar elements assembled on said frame (3) so as to delimit between them said branches (7 ') of said ventilation channel (7). <Desc / Clms Page number 17>  6. Cover slab (1) according to claim 1, characterized in that said ventilation channel (7) has at least over a part of its length a width between 2 mm and 10 mm 7. covering slab (1) according to claim 1, characterized in that said ventilation channel (7) has an open surface substantially of 1 to 4% of the total surface of said covering slab (1) and preferably between 1 to 2%. 8. cover slab (1) according to claim 2, characterized in that it comprises at least one chute (9) arranged to collect liquids present on said plate (2). 9. Covering slab (1) according to claim 8, characterized in that said chute (9) is at least partially disposed adjacent to said ventilation channel (7) 10. Covering slab (1) according to claim 1, characterized in that it comprises means for modifying its degree of transparency to the rays arranged to vary the opacity of at least part of said plate (2) depending on the rays it receives. 11. covering slab (1) according to claim 10, characterized in that its means for modifying its degree of transparency comprise photo-reactive organic materials. 12. Cover slab (1) according to claim 1, characterized in that it comprises means for filtering the rays arranged to limit the passage of said rays through said cover slab (1). <Desc / Clms Page number 18>  13. covering slab (1) according to claim 11 or 12, characterized in that said means for modifying the degree of transparency and / or said filtration means are integrated into said plate (2) in at least one of the forms chosen in the group comprising at least one film, pigments. 14. Covering slab (1) according to claim 13, characterized in that said film is integrated into said plate (2) by overmolding. 15. Covering slab (1) according to claim 1, characterized in that it comprises decorative elements arranged to form patterns and / or inscriptions, said decorative elements being in at least one of the forms chosen from the group comprising at least one film, pigments. 16. Covering slab (1) according to claim 1, characterized in that it comprises light means arranged to illuminate it at least in part. 17. Cover slab (1) according to claim 16, characterized in that said light means comprise light guides (13) integrated in said plate (2), these light guides (13) can be associated with a light source exterior. 18. Cover slab (1) according to claim 16, characterized in that said light means comprise at least one groove (14) disposed in said plate (2) and a light garland (15) disposed in said groove (14). 19. covering slab (1) according to claim 16, characterized in that said light means comprise photo-luminescent pigments associated with said plate (2). <Desc / Clms Page number 19>  20. covering slab (1) according to claim 19, characterized in that said photo-luminescent pigments are integrated into said plate (2) in at least one of the forms chosen from the group comprising at least one flexible film, one paint, granules, powder, sticks, a mixture of at least two of these. 21. Covering slab (1) according to claim 1, characterized in that it comprises connecting and locking means (11, 11 ', 12.12') arranged to allow the assembly of several covering slabs ( 1) substantially identical adjacent. 22. Provisional floor (10) covering the ground formed by a set of substantially identical covering slabs (1) each comprising at least one plate (2) made of an at least partially translucent or transparent synthetic material, this plate (2 ) serving as a support for the passage and / or parking of people, vehicles and / or equipment, said covering slab (1) also comprising at least one reinforcing reinforcement (3) carrying said plate (2) and at at least one foot (4) integral with said reinforcing reinforcement (3), said covering slabs (1) being disposed adjacent along substantially the same plane and assembled by connecting and locking means (11, 11 ', 12.12 '), characterized in that these covering slabs (1) comprise at least one ventilation channel (7) arranged to bring the top and the bottom of said covering slabs (1) into communication and allow the flow of a flow air. 23. Temporary floor (10) according to claim 22, characterized in that said ventilation channels (7) open laterally to communicate with each other. 24. Temporary floor (10) according to claim 22, characterized in that it comprises means for modifying its degree of transparency to the rays <Desc / Clms Page number 20>  arranged to vary the opacity of at least part of at least one of its covering slabs (1) as a function of the radii which it receives. 25. Temporary floor (10) according to claim 22, characterized in that it comprises means for filtering the spokes arranged to limit the passage of said spokes through at least one of said covering slabs (1). 26. Provisional floor (10) according to claim 22, characterized in that it comprises decorative elements arranged to form patterns and / or inscriptions 27. Temporary floor (10) according to claim 22, characterized in that it comprises light means (13,14, 15) arranged to make it at least partly bright.