ES2202109T3 - MODULAR REMOVABLE FLOOR FOR STAINED WATER FLOORS. - Google Patents

Abstract

A removable modular floor for raised floors formed by modular quadrilateral units, each comprising: a floor slab composed of a base element (1) made of corrugated metal sheet formed by one or more pieces, depending on size, surrounded by four metal sections (2, 3) forming the side walls of said slab, and a concrete layer (14) poured on said base element (1) of corrugated sheet metal and confined by said side walls, said metal sections having ( 2, 3) said side walls forming a basically Z-shaped or S-shaped section with square loops, and four segments of gutters open at the top, two main (6) and two secondary (7), arranged peripherally around said slab of composite floor, and adjacent to said side wall sections (2, 3), housed in the channels defined by pairs of side wall sections (2, 3) belonging to adjacent composite floor slabs entities.

Description

Detachable modular floor for raised floors waterproof.

The present invention relates to a floor modular removable for water-tight raised floors. Plus specifically, this invention relates to a floor structure formed by a plurality of composite slabs that can be assembled by modules, made of sheet steel and concrete, provided with a drainage system for collecting and driving the Rainwater between the slabs. Said floor structure enables the rapid assembly of the raised floor and, at the same time, allows completely dismantle the same, also preventing any filtration or dripping of water to the underlying area.

It is known that interest is increasing aroused by the constructions of one or more floors or floors elevated, suitable for mounting in a short time and by means of restricted economic resources, especially in the case of building of more or less provisional parking lots, such as alternative to conventional car parks of several floors of underground and / or elevated construction. However, if what I know you want to maximize the advantages offered by these structures, it is it is necessary that assembly times and costs be authentically competitive, without this having an impact negative in the quality and duration of the resulting work.

European Patent No. 0364414, property of the immediate applicant, describes a structure that makes possible achieve the previous objectives. Said patent refers to a modular system of easy assembly to build, in installments extremely short, an elevated floor intended to be used as car parking place, and that can also be disassembled and recovered to be used again, for example, in a place different. The structure basically consists of modular units, each of them comprising a composite floor element rectangular or square, surrounded by four edge beams and subject in its corners by four vertical support elements or pillars, which support said edge beams by means of corresponding nodal or capital elements, meeting arranged, under said vertical support elements, some special bases to lean on the ground while a system of crossbars and / or struts transversely reinforces the structure.

Each of said vertical elements of support ends, at a height corresponding to the base, in a threaded joint prepared to allow adjustment of the element Vertical throughout its length. Said base also includes a turning device which, in particular, consists of a joint ball that allows the base plate to rest according to the inclination of the ground surface while the element of stand that is located above is capable of adopting a position perfectly vertical This double adjustment system makes it possible install the modular structure also on uneven terrain, not previously leveled, and without the need to carry out works of foundation. Therefore, the structure in question is constructed by assembly of a modular unit next to another, with the modules adjacent sharing the corresponding beams and support elements, so that an elevated floor is obtained which can be used as parking and equipped in any way and desired size.

In the illustrative embodiments described in European Patent No. 0364414, the modular slabs of flooring are made of a double layer formed by a steel sheet corrugated of an appropriate thickness, as a support component of the load, covered by a panel of light and strong material, by way of paving component, preferably made of properly treated plywood. This form of execution to allow the use of light elements suitable for be mounted in the same place where the parking structure, said elements involving a relative reduction of transport costs, and being easy to move from one site to another building site by hand or by forklift elevators

In the practical construction of car parks modular according to the previous patent, by means of floors composed of corrugated steel and wood veneer (preferably plywood birch treated with synthetic resins to give it waterproof), the wooden panel is attached to the steel plate underneath by metal channel sections with a Omega shaped section (\ Omega), mounted along the edges of two adjacent panels. Omega-shaped channels they are drilled in the slit part of the section in order to enable its connection by means of screws to the corrugated steel sheet underlying. The corrugated steel sheet, in turn, is perforated of the corresponding form along the contact area with the Omega shaped section. This panel assembly procedure wooden (oriented, as is evident, to ensure complete detachability of composite floor slabs) manages to avoid any need to drill the treated wood panel, but, for on the other hand, it necessarily involves drilling the sheet metal corrugated steel that supports the load on the site of building.

In the aforementioned embodiments, corrugated steel sheet is also used to collect water from rain under said wooden panel. Since the ground can be provided with a slight slope through an intervention in the length of the adjustable pillars of the structure, water can be conducted, flowing through the channels of the corrugated sheet, towards one or more peripheral edges of the raised floor, to be collected in drains at the edges, from which branched conduits start Until we reach the ground.

The embodiment with composite floor made Corrugated steel and wood sheet is especially advantageous to the view of how relatively easy it is to transport the components of construction, which allows construction costs not increase too much in the cases of facilities in places very away from the factory or that only have access by sea. Furthermore, said form of execution has proved effective in concerning the modular versatility provided by the possibility to easily cut the soil components in the plot of construction with the purpose of accommodating any variation of Structural module size. Actually, it should be noted that the structure in question, although commercially oriented to a modularity standard, it should also be such that could meet the different requirements that may appear In particular cases. For example, the modular structure must be adapted to meet the different national standards regarding standards regarding the size of the parking spaces of vehicles, or the width of the tracks in which the vehicles.

Despite the above advantages, however, the floor slab made of sheet metal and wood panels It has the disadvantage of not allowing a long durability of the parking area, considering first of all that it is it is necessary to drill the sheet metal to join the sections metal that keep the wood panels in place. The perforation makes the metal sheet subject to corrosion and, since said operation is necessarily carried out during the assembly stage, it is not possible to make a new Galvanized sheet metal after drilling. East corrosive attack is not only noticeably intensified by water of rain collected inside the corrugated steel sheet, but also by the condensation that is formed in a significant amount in the contact area between the sheet metal and the panel. In second, soil durability is severely threatened by poor wear resistance of the paving surface of wood, in spite of any previous treatment that is applied to said surface. Rigorously depending on the total use made of the parking structure, as well as its location in the area of pavement, the wooden panels are subjected to similar wear deterioration that is often necessary to replace damaged panels, especially in the corridors and in the areas of maneuver.

An additional critical element is due to the fact that the wooden panel mounted on the corrugated metal sheet makes the ground extremely loud when vehicles pass about it, since the pairing of the two previous elements It acts like a soundboard.

A second form of execution considered for the production of the soil of the structure according to European Patent No. 0364414 involves the use of individual prefabricated elements of reinforced concrete, manufactured in the factory and installed in a state almost finished. In this case, reinforced concrete slabs or plates that form the modular units of soil are poured into molds metal in the proper way. During molding they are provided the holes and other joining means, in order to make it possible for the resulting piece is removed from the metal mold when there is set, as well as for transportation and installation purposes.

The concrete slabs in question are mounted on the support structures of the modular structure of parking without any spillage taking place at the site of installation, in order to make possible the total reuse of materials when the parking structure is disassembled and taken elsewhere. The unions between the elements, therefore, they should not be permanent and, at the same time, should allow that rainwater be collected and driven down without causing No leaks in the underlying area. For this purpose it is arranged between gutter slabs and water collection drains, covered by a metal grid and extending into a first of the two lattice directions formed by the arranged floor slabs side by side. In the first orthogonal direction, conversely, it provides a joint between adjacent slabs by means of steps Complementary equipped with a sealing rubber placed between socks. In addition, in order to improve sealing, the vertical groove between each pair of adjacent slabs is filled with a material of Easy to remove seal.

The proposed system eliminates the main drawbacks of the first floor system described above, Firstly because the thickness and solidity of the concrete panel They completely suppress the noise problem. Secondly, all wear of the paving surface is also reduced, made of a cement-based material, thanks to the arrangement of a layer of resin or bituminous conglomerate on the concrete, so as to protect it from wear due to movement of vehicles like rainwater.

However, the floor structure made of Precast reinforced concrete is not free from other inconveniences. Among them, the cost of transport of the slabs from the place of manufacture, the extension of the total construction time of the parking structure or, conversely, the immobilization of prefabricated products in the manufacturing location and / or the need to have a large available number of metal molds. Actually, the transport of slabs of precast reinforced concrete of an appropriate size for use as modular elements of raised floors in structures of Fast assembly parking is quite expensive: normally it is not possible to load more than twelve elements in each container, which implies the multiplication of the routes of transport, as well as the costs arising from the installation of such structures away from the manufacturing site.

As regards the problems of Prefabrication, it is clear that, in order to meet in the short term production orders for a work the size of a parking, it is necessary to have a large number of molds available that can be used simultaneously, which requires that have a large work area in the place of production and, additionally, a significant capital investment in The production of the molds. On the other hand, the ability to appeal to an advanced production of workpieces required by need a large storage place as well as an important capital immobilization, in addition to raising the problem of production flexibility with respect to any slab demand "non-standard" size.

As regards the previous problem, you should keep in mind that not only the size of the modular elements Requested is subject to variation because of the above reasons, but another variable factor appears with the possibility of coating the concrete slab, either with a layer of bituminous material, well with a thin film of resin protective Since, for obvious reasons of wear resistance, the concrete slab is provided with a peripheral metal section incorporated, it is necessary to provide in prefabricated production a top layer not filled with concrete and whose thickness varies according to the circumstances.

Another drawback of the modular concrete floor described above has proved to be an unsatisfactory tightness of the junction between adjacent slabs as performed by a gasket with a sealing rubber placed in between. In actually, in this case, the sealing of the passage joint is carried out after assembling the concrete panels and, since it is involved a joint of a remarkable linear extension, the possibility of defects and leaks. Even if an exam is run end of the tightness producing a "flood artificial "after installation, the possibility of settlement of the metal structure during the period immediately post installation - also because of the passage of the first vehicles- does not offer any guarantee regarding possible water leaks or leaks, which would have to be located and eliminated one by one as presented.

In view of the above, one of the objectives of the present invention is to provide a structure of modular platform for raised floors suitable for supporting the load, in particular, of a car park, whereby said structure be assembled easily and quickly when installing the work, and being able to be disassembled with the same ease, being reusable, durable and not subject to undue deterioration due to use. Additionally, said structure should allow maintaining transport costs at a minimum level when assembling the work and, despite if easily removable, it should prevent any leakage of water or leak to the area below. Besides, the floor structure should allow sufficient flexibility in as regards the size of the modules and the type of final coating of the paving surface.

To achieve this end, this invention brings match of conventional floor construction technology Continuous load support made of corrugated metal sheet and filled with a layer of concrete, usually reinforced, poured over Corrugated metal sheet. The latter acts at the same time as confining surface of concrete in fluid state and as an element component of the final composite structure. According to the invention, each of the modular slab elements that make up the floor elevated can be produced directly and quickly in the place of installation providing a steel "box" with a base of corrugated metal sheet and four walls formed by appropriate metal sections (i.e. easily transportable and adjustable in terms of dimensions) and pouring the concrete in said metal "box" directly at the location definitive of the floor slab. Additionally, according to this invention, the joints between the different slab elements that form the raised floor are not provided with sealing means oriented to prevent the passage of water between them, but, when on the contrary, they are entirely provided, on all sides of the slabs of conduction means arranged to collect said water, instead of trying to stop it, and lead it to the drains corresponding.

Accordingly, the present invention specifically provides a removable modular floor for floors elevated formed by modular quadrilateral units, comprising each of them:

a composite floor slab with a base element made of corrugated metal sheet formed by one or more pieces, according to their size, surrounded by four metal sections which form the side walls of said slab, and a layer of concrete poured on said metal sheet base element corrugated, and confined by said side walls, having the mentioned metal sections forming said side walls a basically Z-shaped or S-shaped section with square loops, Y

? four segments, two main and two secondary, with gutters open at the top, arranged peripherally around said composite floor tile, and adjacent to said side wall sections, housed in the channels defined by pairs of side wall sections belonging to adjacent composite floor slabs.

It is preferable that the upper side basically horizontal of each of said shaped side wall sections Z or S-shaped square loop, be extended by a fin oriented down and hanging over the respective gutter, so that it acts as a drip point. That provision makes possible that the water flowing over the upper horizontal side of said side wall sections fall vertically in the gutter underlying collector, instead of adhering and flowing on the podiums of the section.

According to a preferred embodiment of this invention, the side wall sections of the composite slab that they are parallel to the folding lines of said metal sheet corrugated base element, have a basically shaped section of Z, and the corresponding gutter segments are located between the outer vertical sides of two of said sections of Z-shaped side wall belonging to floor slabs adjacent compounds. Again according to a preferred form of embodiment, the side wall sections that are orthogonal to the folding lines of said corrugated metal sheet have a basically S-shaped section with square loops, and the corresponding gutters are arranged on the sides intermediate, basically horizontal, of said wall sections S-shaped square loop side, belonging to slabs of adjacent composite soil.

In the rest of the dependent claims, specify more structural and functional characteristics of the modular floor according to the invention. According to another aspect of it, This invention also provides, in addition to the final structure of soil that can be done using the previous ones criteria, the set of elements that are assembled in the plot construction site of the raised floor, and that completes simply pouring concrete and the subsequent application of a protective coating on it. Therefore, this invention also specifically provides a set of Assemblies on the building site for floor assembly modular units for raised floors formed by units modular quadrilaterals, said set comprising elements:

for each of said sets of modular units, a quadrilateral element made of sheet metal corrugated formed by one or more pieces, depending on the size, and four metal sections, each having a length corresponding to one side of said metal sheet element corrugated, said metal sections having a section basically in the form of Z or S with square loops, being prepared each of said metal sections to be paired to a corresponding side of said metal sheet element corrugated;

• two main gutter segments open from above, prepared to extend along one or more of these modular units and to be housed in the channels defined by each pair of metal sections belonging to adjacent modular units; Y

• two segments of secondary gutters open from above, each of them having a length corresponding to a modular unit, ready to be housed in the channels defined by each pair of metal sections belonging to adjacent modular units.

It will be clear that, even if possible conveniently transport component elements separately and assemble them to pour concrete directly into the site of work, the system of this invention can also be used, as to any specific requirement, to manufacture the slabs of composite floors away from the installation site, for example, directly at the factory or in an appropriate area of the site of building.

Also in regard to the system assembled, the additional structural features of this invention are listed in the dependent claims. Said characteristics, as well as the advantages of the invention, they will be clearer by referring to a specific form of realization of it as shown, only by way of example, in the accompanying drawings, in which:

Figure 1 is a partial perspective view of an embodiment of the removable modular floor according to this invention, partially devoid of concrete filling;

Figures 2 and 3 are two vertical views in section of a part of the soil of Figure 1, after pouring of concrete and the final coating, made respectively to along an orthogonal plane to the folding lines of the sheet of corrugated metal and along a plane parallel to said lines;

Figure 4 is a partial perspective view of two side wall sections angularly matched to the floor of Figure 1, as they can be seen from the inside; Y

Figure 5 is a partial perspective view of the same side wall sections of Figure 4, such as They can be seen from the outside.

As Figures 1-3 show, the detachable modular floor according to this invention is formed by a plurality of quadrilateral composite floor slabs, arranged side by side, its bottom being formed by elements (1) of sheet metal corrugated metal (directly visible in Figure 1, which shows partially the structure before concrete pouring), and whose side walls are formed by four metal sections (2,3) that form two differentiated couples in terms of their shape. In particular, there are two profile sections arranged basically in Z shape (2) (best shown in Figure 2) at the edges of the base elements of corrugated sheet metal (1) along the edges of the slab that are parallel to the folding lines of said sheet metal, while two basically S-shaped sections (3), whose section is S-shaped with square loops, (better shown in Figure 3) are arranged along the two orthogonal sides The metal "boxes" formed by the base element (1) of corrugated sheet metal and by said sections Sidewall (2,3) are preferably assembled at height of the raised floor, leaving them directly on the fabric horizontal of the beams (4,5) of said modular structure. In the case shown, as can be seen in Figures 3 and 2, the S-shaped square loop sections (3) are directly arranged on the upper wings of the corresponding beam (5). Z-shaped sections (2) are placed with their ends on the same beam (5) (in addition to any other support point intermediate), since the upper wing of the beam (4) parallel to said Z-shaped sections (2) is occupied by the gutter main (6) provided for water collection.

Actually, the form and relative situations of two Z-shaped side wall sections (2) belonging to two adjacent floor slabs are such that a space is left between stockings to accommodate the main gutters (6). The latter are extend parallel to the folding lines of the sheet metal corrugated metal of the base element (1) and must be arranged directly on the wings of the corresponding beams (4) to so be placed at a minimum height to collect water. How can be seen in Figure 1, said main gutters (6) can spread uninterruptedly across multiple units Modular On the other hand, the side wall sections with loop square and S-shaped (3) have a size and location relative that makes it possible for secondary gutters (7) to be positioned on their intermediate horizontal sides, so that said secondary gutters (7) are placed higher than the main gutters (6) and can discharge the water in them pick up Since they meet at both ends with the gutters main (6), secondary gutters (7) extend a length corresponding to the dimension of a floor slab modular, preferably with a slight protrusion after vertical walls of the main gutters (6).

As can be seen in Figures 1 and 3, the height of the smaller vertical sides of said wall sections side with square and S-shaped loop (3) is such that it does it is possible that the edges of the corrugated metal sheet of the element base (1) are inserted into the lower channel of said sections of wall (3). Therefore, said height is not less than the total thickness of said corrugated metal sheet. The upper horizontal sides of said side wall sections with square and S-shaped loop (3) they extend so that they cover almost completely (belonging to the sections facing two floor slabs adjacent) the corresponding secondary gutter (7). Said design aims to eliminate any need to provide additional elements to cover the joint between two adjacent floor slabs in order to make the ground continuous enough. Obviously, those sides horizontal should be of limited width, so as not to bend under the passage of no load concentrated on the ground, such as For example, the load due to the wheels of a vehicle.

\hbox {Z
(2).}

The same considerations as above are applicable to the upper horizontal sides of the Z-shaped side wall sections (2), which have a limited width. Specifically, said width is quite less than half the width of the underlying gutter (6), and the space between the upper sides of two Z-shaped side wall sections (2) belonging to adjacent composite floor slabs is covered by a grid element (8) placed on the main gutter (6) and supporting both longitudinal edges on the upper sides of said side wall sections in the form of

 \ hbox {Z
(two).} 

Both in said side wall sections in Z shape (2) as in said side wall sections with loop square and S-shaped (3), the upper side is extended by a fin (9,10) folded down and hanging over the gutter respective (6.7), in order to act as a drip point. The detailed configuration of said two side wall sections (2,3), as well as its joints in the corners of the floor slab compound, is shown in Figures 4 and 5. Specifically, Figure 5, describing the angular segment as can be seen from the outside, clearly shows the two drip fins (9,10). With the intention to prevent the concrete in fluid state from overflowing during the manufacturing stage, the corners between said sections side wall (2,3) have a closing end plate (11) in the lower channel of said loop side wall section square and S-shaped (3). Said closing end plate (11) is It is preferably welded. As Figure 5 shows, the section S-shaped square loop side wall (3) is cut preferably with the upper channel slightly extended, so to better accommodate and support the secondary gutter (7). Other particular feature shown more clearly in detail It consists of the Z-shaped side wall sections (2) preferably have an asymmetrical section, with one side lower horizontal (12) noticeably larger than the horizontal side higher. This helps to match it with the corrugated metal sheet of the base elements (1), because it makes it easier to accommodate the position variable of the descending terminal segment of the sheet metal, which It can be different according to the size of the corrugated metal sheet that is used, as well as according to its inclination.

As Figures 1-3 show, one or more steel reinforcing elements (13) can be arranged inside the metal "boxes" prepared the way described above, for example, in the form of wire mesh metallic and / or steel bars. Once placed these elements of reinforcement (13), the pouring operation of the concrete layer (14) can be carried out to fill the "boxes" up to the level wanted. This level depends on the final protective layer that has been chosen to apply on the concrete layer (14). In the way of embodiment shown, a coating layer (15) of bituminous conglomerate on the concrete layer (14), being applied said coating layer (15) thick enough to that is matched to the top surface of the floor slab Composed in question. As already noted, instead of that layer of bituminous conglomerate, it is also possible to provide layers of very thin protective coating, such as resins waterproofing: it becomes clear that the possibility of carrying out the pouring of concrete in the building site allows adjusting in any time the thickness of said layer to the type of coating preselected end.

The present invention has been described by making particular reference to certain specific embodiments of the same, but it should be clear that people who are experts in the field they can make modifications and changes without departing from the scope of the invention as defined in the appended claims.

Claims (17)

1. A removable modular floor for floors elevated formed by modular quadrilateral units, comprising each of them: a composite floor slab with a base element (1) made of corrugated metal sheet formed by a or more pieces, depending on size, surrounded by four sections metallic (2,3) that form the side walls of said slab, and a concrete layer (14) poured on said base element (1) of corrugated metal sheet and confined by said side walls, said metal sections (2,3) forming said walls having laterally a basically Z-shaped or S-shaped section with loops squares, and • four segments of open gutters above, two main (6) and two secondary (7), arranged peripherally around said composite floor slab, and adjacent to said side wall sections (2, 3), housed in the channels defined by pairs of side wall sections (2,3) belonging to adjacent composite floor slabs. 2. A modular floor according to claim 1, in which the basically horizontal upper side of each of said Z-shaped or S-shaped side wall sections (2,3), is prolonged by a fin (9,10) that is bent towards below and hanging on the respective gutter (6.7). 3. A modular floor according to claims 1 or 2, wherein said side wall sections (2) that are parallel to the folding lines of said corrugated metal sheet of the base element (1) have a basically Z-shaped section, and the corresponding gutter segments (6) are placed between the outer vertical sides of two of said sections of Z-shaped side wall (2) belonging to floor slabs adjacent compounds. 4. A modular floor according to claim 3, in which said side wall sections (3) that are orthogonal to the folding lines of said corrugated metal sheet of the element base (1) have a basically S-shaped section with loops squares, and the corresponding gutters (7) are arranged on the basically horizontal intermediate sides of two of said S-shaped side wall sections of square loop (3) belonging to adjacent composite floor slabs. 5. A modular floor according to claim 4, in the height of the lower vertical sides of said S-shaped side wall sections of square loop (3), not is less than the total thickness of said base element (1) made of corrugated metal sheet, the edges of said edges being inserted base elements (1) in the lower channel of the respective sections S-shaped side wall with a square loop (3). 6. A modular floor according to claims 4 or 5, in which the main gutters (6) adjacent to said Z-shaped side wall sections (2) are formed by continuous gutter segments that extend along two or more modular units, while secondary gutters (7) adjacent to said S-shaped side wall sections of square loop (3) have a length corresponding to one unit modular, are located at a height greater than the height of said main gutters (6) and have the open end on said main gutters (6). 7. A modular floor according to claim 6, in the one that the width of the upper side, basically horizontal, of each one of the Z-shaped side wall sections (2), is smaller than half the width of the underlying main gutter (6), and the space between the upper sides of two wall sections Z-shaped side (2) belonging to composite floor slabs Adjacent is covered by a grid element (8) arranged on said main gutter (6) and which supports its two edges longitudinal on the upper sides of said wall sections Z-shaped side (2). 8. A modular floor according to any one of the claims 3-7, wherein said sections of Z-shaped side wall (2) have an asymmetrical section, with a substantially horizontal bottom side (12) noticeably wider than the basically horizontal upper side. 9. A modular floor according to any one of the preceding claims, wherein said concrete layer (14) incorporates one or more steel reinforcement elements (13). 10. A modular floor according to any one of the preceding claims, wherein each of said slabs of composite flooring further comprises a coating layer protector (15) on said concrete layer (14). 11. A modular floor according to claim 10, wherein said coating layer (15) is made of material bituminous, resinous material or cement based material. 12. A modular floor according to claim 11, wherein the sum of the thicknesses of said concrete layer (14) poured onto said base element of corrugated sheet metal (1) and confined by said side wall sections (2,3), and that of the upper surface of said protective coating layer (15), it is such that the upper surface of said coating layer (15), is located basically at the same level as the sides basically horizontal upper part of said wall sections lateral (2,3). 13. A set of assemblies in the building site for the assembly of removable modular floors for raised floors, consisting of modular quadrilateral units, said set of elements comprising: for each of said units modular, a quadrilateral element (1) made of sheet metal corrugated formed by one or more pieces, depending on the size, and four metal sections (2,3), each having a length corresponding to one side of said metal sheet element corrugated (1), said metal sections (2,3) having a section basically in the form of Z or S with square loops, being adapted each of said metal sections (2,3) to be paired to the corresponding side of said sheet metal element of metal (1); • two main gutter segments open from above (6), adapted to extend along a or more of said modular units and to be housed in the channels defined by pairs of metal sections (2) belonging to adjacent modular units; Y • two segments of secondary gutters open from above (7), each of them having a length corresponding to a modular unit, adapted to be housed in the channels defined by pairs of metal sections (3) belonging to adjacent modular units. 14. A set of assemblies according to claim 13, wherein two of said four sections Metallic (2) have a basically Z-shaped section and are adapted to be matched to the sides of said element of corrugated metal sheet (1) parallel to its lines of creased. 15. A set of assemblies according to claim 14, wherein the other two of said four metal sections (3) have a basically S-shaped section with square loops and are adapted to be matched to sides of said corrugated sheet metal element (1) in shape orthogonal with respect to its folding lines. 16. A set of assemblies according to claim 15, wherein said square loop sections S-shaped (3) are adapted to receive said gutters Secondary (7) on the basically horizontal intermediate sides of two of said S-shaped square loop sections (3) belonging to adjacent modular units. 17. A set of assemblies according to claim 16, further comprising two segments of a grid element (8) adapted to extend along a or more of said modular units on said gutters main (6), and to support its longitudinal edges in the upper sides of said Z-shaped sections (2).