Technical Field

The present invention relates to a procedure for the creation of playgrounds, especially for padel.

Background Art

It is well known that the recreational activity called“padel” is carried out on special playgrounds comprising a floor for foot traffic and an outer fence, both associated with a foundation slab.

The floor for foot traffic usually comprises a sports covering that covers the foundation slab in its central portion.

The sports covering may be of a different nature; it may consist e.g. of synthetic grass and/or polyurethane resin and/or PVC or other types of material.

The fence extends around the floor for foot traffic and usually comprises a wire mesh and Plexiglas walls anchored to special poles fixed in the perimeter portion of the foundation slab.

If the padel field is built outdoors, as is often the case, the poles and foundation slab must be sized so as to allow the fence to withstand the atmospheric elements, particularly the wind which can cause very strong forces in the area of the Plexiglas walls.

It is well known that today the creation of a padel field comprises several steps.

In particular, after having identified a suitable area to house a padel field, the area itself is initially excavated, i.e. the material present on site is partly removed, usually earth and/or rock, thus creating an emptied area that usually has greater depth in the perimeter portion than in the central portion.

Then the emptied area is partly filled, distributing a layer of inert material directly on the ground constituting the bottom of the emptied area itself.

Then a suitably sized reinforcement is placed on the layer of deposited inert material, which is then covered by a layer of concrete.

This way, once the concrete has dried, the reinforced concrete foundation slab is obtained.

Then the perimeter portion of the foundation slab is drilled to obtain holes, into which appropriate dowels are then inserted.

Then the fence poles are properly anchored to the foundation slab by means of fixing screws, which are inserted into the dowels previously inserted in the holes.

In another step, the sports covering is laid on the central portion of the foundation slab, thus creating the floor for foot traffic.

It is well known that the creation of a padel field according to the prior art has some drawbacks.

In particular, the execution times of a padel field according to the prior art are often very long, thus requiring at the same time the use of manpower, often specialized, for very long periods of time.

These aspects negatively affect the operating costs for the creation of a padel field. In this regard, it should be noted that the drilling step of the perimeter portion of the foundation slab involves the execution of a large number of holes, often more than one hundred, inside which the same number of dowels must be inserted for the subsequent fixing of the poles.

Furthermore, both the aforementioned drilling step of the foundation slab and the subsequent fixing step of the fence require the use of suitable and often expensive equipment.

Furthermore, the cement placed on site must dry for often long periods, in order to achieve the technical characteristics dictated by the industry standards.

In this regard, it should be noted that particularly long execution times are a major problem in the field of building construction, as they may be negatively affected by weather conditions; in fact, working for long times is more exposed to the possibility of running into adverse weather conditions.

In particular, in case of bad weather, it is not possible to lay the concrete and the humidity can further slow down the drying process of the reinforced concrete.

Another drawback that can arise when creating a padel field according to the prior art is that the foundation slab, particularly in the perimeter portions, often has differences in level that make it difficult to position the external fence.

This problem often requires the execution of a leveling job of the Plexiglas walls, through the use of appropriate shimming means.

In addition, the excavation step often requires the movement of large quantities of material, which must then be disposed of, thus increasing the operating costs and at the same time requiring the creation of an appropriate temporary storage area for the excavated material.

Description of the Invention The main aim of the present invention is to devise a procedure for the creation of playgrounds, especially for padel, which allows reducing the time needed to build playgrounds, while reducing the use of manpower.

Another object of the present invention is to devise a procedure for the creation of playgrounds, especially for padel, which allows speeding up the step of positioning the fence and its fixing to the floor.

Yet, another object of the present invention is to devise a procedure for the creation of playgrounds, especially for padel, which allows reducing the use of particularly expensive equipment.

Another object of the present invention is to devise a procedure for the creation of playgrounds, especially for padel, which allows reducing the negative effects caused by the adverse weather conditions.

Another object of the present invention is to devise a procedure for the creation of playgrounds, especially for padel, which allows reducing the presence of differences in level in the flooring.

Yet, another object of the present invention is to devise a procedure for the creation of playgrounds, especially for padel, which allows reducing the amount of land that must be removed from the area suitable to accommodate a padel field during the excavation step.

Another object of the present invention is to devise a procedure for the creation of playgrounds, especially for padel, which allows overcoming the aforementioned drawbacks of the prior art in a simple, rational, easy, effective to use and cost effective solution.

The above mentioned objects are achieved by the present procedure for the creation of playgrounds, especially for padel, having the characteristics of claim 1.

Brief Description of the Drawings

Other characteristics and advantages of the present invention will be more evident from the description of a preferred, but not exclusive, embodiment of a procedure for the creation of playgrounds, especially for padel, illustrated by way of a non limiting example in the accompanying tables of drawings in which:

Figure 1 is an axonometric view that illustrates the step of identifying the area of intervention provided by the procedure according to the invention;

Figure 2 is an axonometric view that illustrates the step of excavating the area of intervention provided by the procedure according to the invention;

Figure 3 is a plan view that illustrates the step of making the leveling foundations provided by the procedure according to the invention;

Figure 4 is an axonometric view that illustrates the step of positioning the prefabricated reinforced concrete curbs provided by the procedure according to the invention;

Figure 5 is an axonometric view that illustrates the step of fabricating the prefabricated reinforced concrete curbs provided by the procedure according to the invention;

Figure 6 is an axonometric view of a first construction type of a prefabricated reinforced concrete curb according to the invention;

Figure 7 is an axonometric view of a second construction type of a prefabricated reinforced concrete curb according to the invention;

Figures 8a and 8b are axonometric views that illustrate the step of connecting the prefabricated reinforced concrete curbs provided by the procedure according to the invention.

Figure 9 is an axonometric view that illustrates the step of fabricating the resting surface provided by the procedure according to the invention;

Figure 10 is an axonometric view that illustrates a detail of the fixing assembly according to the invention;

Figure 11 is an axonometric view that illustrates the step of fixing the fencing assembly provided by the procedure according to the invention;

Figure 12 is an axonometric view that illustrates the step of covering the resting surface provided by the procedure according to the invention.

Embodiments of the Invention

With particular reference to these figures, with I, II, III, IV, V were indicated the main steps of the procedure according to the invention.

In the context of the present discussion, it is considered that the playgrounds for recreational activities created according to the procedure to which the present invention relates, are fields for the game called padel.

Alternative embodiments cannot however be ruled out wherein the procedure to which the present invention relates, is implemented to create playgrounds intended for different recreational activities, such as e.g. squash or basque ball.

Step I of the procedure is shown in Figure 1 and consists in identifying an area of intervention 1.

The area of intervention 1 is an area considered suitable for the creation of a padel field thanks to its geophysical characteristics and location.

In particular, the area of intervention 1 comprises soils suitable for building construction and is also located in a position appropriate to practice the game of padel.

In this regard, the area of intervention 1 might be an area comprised in a city park or an area forming part of an existing sports facility.

It cannot however be ruled out that the area of intervention 1 may be of a different type from what has just been described.

Step II of the procedure is shown in Figure 2 and consists in excavating the area of intervention 1, creating a basement compartment 3, 4 comprising a central portion 3 and a perimeter portion 4.

In this regard, it should be noted that this operation consists in partly removing the material present in the area of intervention 1 by means of earthmoving machinery, such as e.g. excavators and bulldozers.

The material removed varies greatly depending on the geological nature of the area of intervention 1 and often comprises soil and rock fragments.

It cannot however be ruled out that the material removed may be of a different nature; for example, it may consist mainly of sand and clay in the event of the area of intervention 1 being located on a beach or near a river.

The basement compartment 3, 4 is substantially shaped like a hollow volume and comprises a surface at the bottom which defines the central portion 3 and the perimeter portion 4 and extended on different levels.

In fact, the perimeter portion 4 and the central portion 3 are substantially flat but are at different heights with respect to sea level and, specifically, the perimeter portion 4 is located at a lower level than the level of the central portion 3; in other words, the perimeter portion 4 is obtained through a deeper excavation while the central portion 3 is obtained through a less deep excavation.

The perimeter portion 4 is adapted to extend around the central portion 3 and comprises two first lateral areas LI and two second lateral areas L2.

The first lateral areas LI are positioned opposite the central portion 3 and, for example, are located at the short sides of the padel field (i.e. the backcourt).

The second lateral areas L2, on the other hand, are positioned opposite the central portion 3 and, e.g., are located at the long sides of the padel field (i.e. along the so- called sidelines).

Step III of the procedure is shown in Figure 3 and consists in fabricating leveling foundations 5 in the perimeter portion 4.

Advantageously, the step of fabricating the leveling foundations 5 comprises the step of laying a plurality of formworks 6 in the perimeter portion 4.

In the particular embodiment shown in the figures, the formworks 6 are substantially shaped like hollow parallelepipeds each comprising a top opening 7 and are mainly made up of wooden and/or metal walls assembled together.

Conveniently, step III comprises the step of inserting first reinforcing means 8 inside the formworks 6.

The first reinforcing means 8 are made of steel and, in the particular embodiment shown in the figures, have a substantially elongated shape, i.e. they are shaped like steel bars.

Alternative embodiment cannot however be ruled out wherein the first reinforcing means 8 are shaped differently and, e.g., consist of an electro- welded steel mesh.

It is specified that the section of the first reinforcing means 8 and the type of steel of which they are made vary according to the desired tensile strength of the leveling foundations 5.

Conveniently the step of fabricating the leveling foundations 5 comprises the step of leveling the formworks 6.

In this regard, it should be noted that, conveniently, all the formworks 6 have the same height, but the bottom of the perimeter portion 4 may have differences in homogeneity due, e.g., to:

excavation operations. In fact, during step II as provided by the procedure to which the present invention relates, the removal of the material from the area of intervention 1 may take place in an uneven manner, thus determining the presence of differences in level at the bottom of the perimeter portion 4;

the very nature of the area of intervention 1. In the perimeter portion 4, for example, there may be more or less large stones that make the bottom of the perimeter portion 4 not homogeneous.

Once laid inside the perimeter portion 4, therefore, the formworks 6 are usually arranged at different heights and the step of leveling the formworks 6 is aimed at eliminating this difference in height. Advantageously, in fact, the step of leveling the formworks 6 comprises the step of measuring the height of the formworks 6 and, subsequently, the step of positioning the formworks 6 at the same height.

In the particular embodiment shown in Figure 3, the step of measuring the height of the formworks 6 is carried out by means of a laser level 9 and the step of positioning the formworks at the same height is carried out through the use of a hammer 10.

In particular, the hammer 10 is used to hit the formworks 6 in order to bring them all to the desired height.

It may still happen that the formworks 6 are not mutually aligned with each other inside the perimeter portion 4 and therefore the hammer 10 is used to hit the formworks 6 in order to align them.

This way, it is possible to position the formworks 6 at the same height above sea level, regardless of the nature of the area of intervention 1, and to mutually align them.

Conveniently, the step of fabricating the leveling foundations 5 comprises the step of pouring at least a first concrete 11 inside the formworks 6.

As shown in Figure 3, the first concrete 11 is poured inside the formworks 6 through the top openings 7.

Advantageously the step of pouring comprises the step of completely filling the formworks 6 with the first concrete 11.

It should be noted that the nature of the first concrete 11 varies depending on the compressive strength that the leveling foundations 5 must have.

Conveniently, the step of fabricating the leveling foundations 5 comprises the step of drying the first concrete 11 poured inside the formworks 6 to obtain a plurality of rigid leveling plates 12.

Each rigid leveling plate 12 is substantially parallelepiped- shaped, comprising the formwork 6 on the outside, the first reinforcing means 8 and the first dried concrete 11 on the inside.

Basically, the rigid leveling plates 12 are reinforced concrete elements which, once subjected to appropriate stress, have suitable tensile and compressive strength characteristics, determined by the first reinforcing means 8 and the first concrete 11 respectively.

Advantageously, step III comprises the step of filling the space of the perimeter portion 4 between the rigid leveling plates 12 with at least one loose material 13, to obtain a filler layer S 1.

Loose material 13 consists, e.g., of gravel, pebbles, sand or mixtures thereof.

In the particular embodiment shown in Figure 3, the distribution of loose material 13 is carried out with a shovel; alternative embodiments cannot however be ruled out, wherein the distribution of the loose material 13 is carried out differently, e.g. by means of bulldozers, excavators or small tipping platforms.

In the embodiment shown in the figures, the leveling foundations 5 are made up of the rigid leveling plates 12, which mainly have a load-bearing function, and of the filler layer SI, which has no load-bearing function or, at most, a secondary load- bearing function.

Alternative embodiments cannot however be ruled out wherein the step of filling the space of the perimeter portion 4 between the rigid leveling plates 12 is not provided for; in this case, therefore, the space between the rigid leveling plates 12 remains clear and the leveling foundations 5 consist only of the rigid leveling plates 12.

Step IV of the procedure is shown in Figure 4 and consists of positioning a plurality of prefabricated reinforced concrete curbs 14a, 14b, 14c resting on the leveling foundations 5.

In particular, the prefabricated reinforced concrete curbs 14a, 14b, 14c are such as to be positioned resting on the rigid leveling plates 12 and at the same time to contact the upper face of the filler layer SI, if any.

This way, the prefabricated reinforced concrete curbs 14a, 14b, 14c lie completely on the upper surface of the leveling foundations 5 and are supported by the leveling foundations themselves.

The prefabricated reinforced concrete curbs 14a, 14b, 14c can be advantageously obtained by means of a preliminary fabrication step schematically shown in Figure 5.

In this respect, it should be noted that the aforementioned step of fabricating prefabricated reinforced concrete curbs 14a, 14b, 14c comprises the steps of:

supplying at least one mold 15;

inserting second reinforcing means 16 inside the mold 15;

filling the mold 15 with at least a second concrete 17;

drying the second concrete 17 inserted in the mold 15; and removing the mold 15 to obtain the prefabricated reinforced concrete curbs 14a, 14b, 14c.

Advantageously, as shown in Figure 5, the mold 15 is substantially shaped like a hollow parallelepiped comprising a mouth 18 on the top thereto.

In accordance with the step of fabricating the prefabricated reinforced concrete curbs 14a, 14b, 14c, the second reinforcing means 16 and the second concrete 17 are inserted into the mold 15 through the mouth 18.

In the particular embodiment shown in the figures, the second reinforcing means 16 are made of steel and have a substantially elongated conformation (e.g., they consist of steel bars).

Alternative embodiments cannot however be ruled out wherein the second reinforcing means 16 are shaped differently, e.g. they may comprise an electro- welded steel mesh.

Also for this step, as previously described in step III, it is specified that the section of the second reinforcing means 16 and the type of steel of which they are made may vary according to the desired tensile strength of the prefabricated reinforced concrete curbs 14a, 14b, 14c.

It should also be noted that the nature of the second concrete 17 varies according to the desired compressive strength to be obtained for the prefabricated reinforced concrete curbs 14a, 14b, 14c.

Subsequently, the second concrete 17 is dried, incorporating therein the second reinforcing means 16 and thus forming a block of reinforced concrete which, once the mold 15 has been removed, forms a main body 19 of the prefabricated reinforced concrete curbs 14a, 14b, 14c.

In the particular embodiment shown in the figures, the prefabricated reinforced concrete curbs 14a, 14b, 14c are essentially of two types.

The prefabricated reinforced concrete curbs 14a of the first type, shown in detail in Figure 6, have the main body 19 substantially L-shaped and therefore having two associated branches to form a right angle.

The prefabricated reinforced concrete curbs 14b, 14c of the second type, shown in detail in Figure 7, on the other hand, have the main body 19 substantially parallelepiped- shaped.

It is further specified that the prefabricated reinforced concrete curbs 14b, 14c making part of the second type can be further grouped into two subcategories depending on their size.

The prefabricated reinforced concrete curbs 14b in the first subcategory, in practice, have the main body 19 wider than the main body 19 of the prefabricated reinforced concrete curbs 14c in the second subcategory and, therefore, height being the same, are also more cumbersome, heavier and stronger.

The prefabricated reinforced concrete curbs 14a of the first type, as shown in Figure 4, are conveniently intended to be positioned at the rigid leveling plates 12 allocated in the angular areas of the perimeter portion, comprised between a first lateral area LI and an adjacent second lateral area L2.

Likewise, the prefabricated reinforced concrete curbs 14b, 14c of the second type, as shown in Figure 4, are adapted to be positioned at the rigid leveling plates 12 allocated in the portions of the first lateral areas LI and of the second lateral areas L2 not comprising the angular areas.

Specifically, the prefabricated reinforced concrete curbs 14b belonging to the first subcategory are allocated at the first lateral areas LI, while the prefabricated reinforced concrete curbs 14c belonging to the second subcategory are allocated at the second lateral areas L2.

Advantageously, the prefabricated reinforced concrete curbs 14a, 14b, 14c comprise at least one coupling shape 20 for coupling to an adjacent coupling shape 20 of another prefabricated reinforced concrete curb 14a, 14b, 14c.

In particular, as shown in Figure 4, each prefabricated reinforced concrete curb 14a, 14b, 14c is allocated adjacent to another prefabricated reinforced concrete curb 14a, 14b, 14c so that the respective coupling shapes 20 mutually associate with each other.

In the particular embodiment shown in the figures, the coupling shape 20 comprises at least one of either a containment compartment 21 or a projection 22.

In particular, each prefabricated reinforced concrete curb 14a, 14b, 14c has a first face comprising the containment compartment 21 and a second face comprising the projection 22, in which the first face of each prefabricated reinforced concrete curb 14a, 14b, 14c is intended to be placed next to the second face of an adjacent prefabricated reinforced concrete curb 14a, 14b, 14c and vice versa.

Conveniently, the prefabricated reinforced concrete curbs 14a, 14b, 14c comprise lateral connecting means 23 for the connection to an adjacent prefabricated reinforced concrete curb 14a, 14b, 14c. As shown in Figure 4, the prefabricated reinforced concrete curbs 14a, 14b, 14c are arranged adjacent to each other.

In this regard, it should be noted that the lateral connecting means 23 of each prefabricated reinforced concrete curb 14a, 14b, 14c are positioned adjacent to the lateral connecting means 23 of the adjacent prefabricated reinforced concrete curb 14a, 14b, 14c.

Advantageously, the lateral connecting means 23 comprise at least one of a threaded bush 25 and a threaded bar 24.

The threaded bar 24 is partially embedded in the main body 19 and comprises a protruding threaded portion 26 from the main body 19.

The threaded bush 25 is completely embedded in the main body 19 and comprises at least one nut screw 27 accessible from the outside.

In the particular embodiment shown in the figures, the lateral connecting means 23 comprise a plurality of threaded bushes 25, which are embedded in the mold 15 together with the second reinforcing means 16 during the step of fabrication of the prefabricated reinforced concrete curbs 14a, 14b, 14c; alternative embodiments cannot however be ruled out wherein the lateral connecting means 23 comprise, e.g., a single threaded bush 25 or one or more threaded bars 24.

As shown in Figures 8a and 8b, step IV of the procedure according to the invention comprises the step of connecting two prefabricated reinforced concrete curbs 14a, 14b, 14c positioned adjacent onto the leveling foundations 5.

In particular, the step of connecting initially provides for the step of positioning a first plate 28, comprising first holes 29, on two adjacent prefabricated reinforced concrete curbs 14a, 14b, 14c.

In particular, the first plate 28 is positioned at the lateral connecting means 23 of both prefabricated reinforced concrete curbs 14a, 14b, 14c.

The positioning of the first plate 28 provides that the first holes 29 are placed at the nut screws 27 to facilitate the subsequent insertion of the screws 30.

The screws 30 go through the first holes 29 and are screwed internally to the nut screws 27, fixing the first plate 28 to both prefabricated reinforced concrete curbs 14a, 14b, 14c and mutually constraining the lateral connecting means 23.

Conveniently, the connection of the prefabricated reinforced concrete curbs 14a, 14b, 14c by means of the lateral connecting means 23 takes place so as to leave a small space (e.g. a distance of 5 mm) between the prefabricated reinforced concrete curbs 14a, 14b, 14c, which space can be filled with a sealing substance; this way the structure obtained by assembling the prefabricated reinforced concrete curbs 14a, 14b, 14c is strong but also partly yielding, so as to better resist any seismic events.

According to the invention, the prefabricated reinforced concrete curbs 14a, 14b, 14c also comprise attachment means 31 associated with the main body 19.

The prefabricated reinforced concrete curbs 14a, 14b, 14c are conveniently positioned resting on the rigid leveling plates 12 so that the attachment means 31 do not contact the rigid leveling plates 12 and, more precisely, so that they face opposite the leveling foundations 5, i.e. upwards.

Advantageously, the attachment means 31 comprise at least one of either a threaded bush 25 or a threaded bar 24, e.g. of a type similar to those described above with reference to the lateral connecting means 23.

In the particular embodiment shown in the figures, the attachment means 31 comprise a plurality of threaded bars 24; alternative embodiments cannot however be ruled out wherein the attachment means 31 comprise, e.g., a single threaded bar 24 or one or more threaded bushes 25.

The usefulness and function of the attachment means 31 will be described here below.

Advantageously, the procedure according to the invention comprises the step of fabricating at least one resting surface 32 on the central portion 3, shown in Figure 9.

In particular, the above mentioned step of fabricating the resting surface 32 comprises the step of positioning protective means 33 at the area of the central portion 3 facing the prefabricated reinforced concrete curbs 14a, 14b, 14c.

The protective means 33 are adapted to prevent the prefabricated reinforced concrete curbs 14a, 14b, 14c from being involved in the aforementioned step of fabricating the resting surface 32.

In the particular embodiment shown in Figure 9, the protective means 33 are made of polystyrene sheets, which are applied on the sides of the prefabricated reinforced concrete curbs 14a, 14b, 14c facing the central portion 3.

The step of fabricating the resting surface 32 comprises the step of laying at least one stabilizing material 34 on the central portion 3 to form a stabilizing layer S2. The stabilizing material 34 is distributed directly on the central portion 3 and therefore contacts directly the material of which the area of intervention 1 is made up.

The protective means 33 prevent the stabilizing material 34 from being distributed over the prefabricated reinforced concrete curbs 14a, 14b, 14c.

The central portion 3 may comprise difference in homogeneities determined by its own geological nature and/or by the execution methods of step II of the procedure according to the invention.

In this regard, the stabilizing material 34 is adapted to level and homogenize the central portion 3, in order to facilitate the subsequent steps provided by the step of fabricating the resting surface 32, as well as to make the central portion itself inert. The stabilizing material 34 may be of different types depending on the nature of the area of intervention 1.

The stabilizing material 34 may, e.g., consist of an agglomeration of natural soils, gravel, pebbles, sand, quarry stabilizers, possibly combined with hydraulic binders, cement or lime.

The stabilizing material 34 distributed forms the stabilizing layer S2.

The step of fabricating the resting surface 32 therefore provides for the step of allocating at least one reinforcing assembly 35 on the stabilizing layer S2.

In the particular embodiment shown in the figures, the reinforcing assembly 35 comprises an electro-welded steel mesh; alternative embodiments cannot be however ruled out, wherein the reinforcing assembly 35 is different and, e.g., consists of a set of steel bars.

Subsequently, as shown in Figure 9, the step of fabricating the resting surface 32 comprises the steps of:

covering the stabilizing layer S2 and the reinforcing assembly 35 with at least a third concrete 36; and

drying the third concrete 36 to create the resting surface 32.

The resting surface 32 conveniently consists of a layer of reinforced concrete.

In this regard, it should be noted that the third concrete 36 and the reinforcing assembly 35 may have different characteristics depending on the tensile and compressive strength that the resting surface 32 must have.

It should be noted that the presence of the protective means 33 prevents the third concrete 36 from coming into contact with the prefabricated reinforced concrete curbs 14a, 14b, 14c, attaching itself permanently to them. This way two advantages are obtained:

the prefabricated reinforced concrete curbs 14a, 14b, 14c are not rigidly joined to the resting surface 32, so as to better withstand any seismic events;

in the event of the padel field having to be removed, the prefabricated reinforced concrete curbs 14a, 14b, 14c can be disassembled and recovered for new use.

Step V of the procedure is shown in Figure 11 and consists in fixing at least one fencing assembly 37 to the attachment means 31 of the prefabricated reinforced concrete curbs 14a, 14b, 14c.

The fencing assembly 37 is adapted to delimit the outer edge of the padel field and is therefore positioned outside the resting surface 32, at the perimeter portion 4.

For this purpose, a preliminary step is provided of supplying the fencing assembly

37 comprising:

at least one holding element 38 associable with the attachment means 31; and at least one containment wall 39 associable with the holding element 38.

The fencing assembly 37 usefully comprises a plurality of holding elements 38 and a plurality of containment walls 39.

The holding elements 38 consist e.g. of a series of metal poles with a rectangular section.

Alternative embodiments cannot however be ruled out wherein the holding elements 38 have a different shape and are made of different material.

Advantageously the holding elements 38, as shown in Figure 10, comprise first fixing means 40 adapted to be associated with the attachment means 31 in the fixing step.

The first fixing means 40 are associated with one base of the holding element 38 and comprise a second plate 41, comprising a plurality of second holes 42.

In step V of the procedure according to the present invention the holding elements

38 are adapted to be approached to the prefabricated reinforced concrete curbs 14a, 14b, 14c so that the first fixing means 40 are positioned adjacent to the attachment means 31.

Then the threaded bars 24 comprised in the attachment means 31 are inserted into the second holes 42 and fixed to the second plate 41, e.g. by means of nuts or other locking systems.

It is also easy to appreciate that if the attachment means 31 do not consist of threaded bars 24 but of threaded bushes 25, then the fixing of the holding elements 38 and of the second plates 41 to the prefabricated reinforced concrete curbs 14a, 14b, 14c can be carried out in a similar way to what has been said for the lateral connecting means 23, i.e. by placing the second plates 41 at the threaded bushes 25 to facilitate the subsequent insertion of screws.

Step V of the procedure according to the invention usefully comprises the step of anchoring the containment walls 39 to the holding elements 38.

Advantageously the holding elements 38, as shown in Figure 10, comprise second fixing means 43 adapted to associate themselves with the containment walls 39 in the anchoring step.

In the particular embodiment shown in the figures, the second fixing means 43 are positioned in the end portions and in the central portion of the holding elements 38 and are made up of sheets protruding from the holding elements themselves.

In this regard, the containment walls 39 comprise anchoring means adapted to be associated with the second fixing means 43 in the anchoring step.

The containment walls 39 are substantially flat and can be made of different materials.

In the particular embodiment shown in the figures, some containment walls 39 are made up of Plexiglas sheets while the remaining containment walls 39 are made up of sheets of wire mesh.

The containment walls 39 made up of Plexiglas sheets are usefully anchored to the holding elements 38 fixed to the prefabricated reinforced concrete curbs 14a, 14b, 14c arranged along the first lateral areas LI and, in part, also along the second lateral areas L2, in the proximity of the comer areas.

The containment walls 39 made up of sheets of wire mesh, on the other hand, are suitably positioned only at the central portions of the second lateral areas L2.

It is therefore easy to appreciate the reason why the prefabricated reinforced concrete curbs 14b in the first subcategory have greater load-bearing characteristics than the prefabricated reinforced concrete curbs 14c in the second subcategory, since they must be more suitable for holding containment walls 39 made of Plexiglas that are more subject to the force of wind.

Conveniently, the procedure according to the invention also comprises a step of covering the resting surface 32 with at least one covering mat 44 to create a play surface 45. The step of covering is shown in Figure 12.

The covering mat 44 is adapted to be laid on the resting surface 32 covering the same and obtaining the play surface 45.

The covering mat 44 can be made of different materials, e.g. it can be made of synthetic grass or linoleum or PVC.

The play surface 45 is adapted to be trampled on by the players participating in the game of padel.