ES2367538T3 - SYSTEM FOR THE CONSTRUCTION OF WOOD BUILDINGS. - Google Patents

Abstract

System for the construction of wooden buildings, single or multi-storey, using panels (1, 2, 3 and 4) comprising groups of vertical planks coplanarios (5) attached by their vertical edges and coupled by tension bars (8) introduced through aligned holes (7), located (5) between the vertical edges of the planks, while the vertical union between overlapping coplanar panels and between panels and a roof and / or foundation structure is carried out by elements of auxiliary joints located in central channels (17) of the panels along their longitudinal edges, the aforementioned joining elements comprising: - female profiles (14-14 ') housed in the central channels (17) mentioned above of the panels - intermediate male profiles (15) housed in opposite female profiles (14-14 ') of two overlapping coplanar panels, and - extreme male profiles (16-16') housed in the profile female (14-14 ') facing the roof and / or foundation structure and attached to said roof and / or foundation structure, characterized in that - the female profiles (14-14') are striated and have the same shape as the central channels (17) of the panels, with a throttling (18-20) at its exit and a wider internal section (19-21); and - the intermediate male profiles (15) have an intermediate flat core (22), which is as thick and as high as the throttles (20) of two opposite female profiles of the overlapping coplanar panels, and two extreme longitudinal heads (23) , wider than the strangulation (20) but smaller than the internal sections (21) of the two opposite female profiles; and - the end male profiles (16-16 ') have a flat core (24-24') that is as thick as the width of the throttle (20) of the corresponding female profile (14-14 '), and a longitudinal head ( 25-25 ') wider than said throttle (20) but smaller than the internal section (21) of the female profile (14-14'), the flat core (24-24 ') protrudes from the throttle (20) of the profiles female (14-14 ') in a section that connects to the roof and / or foundation structure, and the horizontal union of the panels is achieved by means of tension bars.

Description

Field of the Invention

The present invention relates to a system for the construction of wooden, single-storey or multi-storey buildings, using wooden panels comprising groups of solid wood planks, arranged vertically, and attached by their vertical edges and joined by tension bars horizontal introduced through aligned holes located between the vertical edges of the planks.

Background of the invention

EP1063365 describes a modular system for the integral construction of solid wood, single-storey or multi-storey buildings, using the same modules or panels for floor, wall and roof frames. These modules or panels are constructed using wooden panels that comprise groups of vertical planks, attached by their vertical edges, where they have dovetail assemblies. The planks are joined by horizontal tension bars in aligned holes located between the vertical edges of the planks, and also by horizontal profiles that surround the transverse edges of the planks.

The lateral union between modules at the same height is carried out by means of tension bars, for which these tension bars protrude from the vertical edges of the modules into parts that are introduced in the holes facing the adjacent modules, to which they are fixed by nuts .

The vertical connection between the modules or overlapping coplanar panels and between panels and the structure of the frames, the roof and the foundation, is done by welding the horizontal profiles that surround the transverse edges of the boards, either with each other or with other metal profiles. .

The vertical joint system requires welding work, which lengthens execution times and increases costs.

On the other hand, the horizontal profiles surrounding the transverse edges of the planks constitute a thermal transmission bridge between the interior and exterior of the building. The welding of the horizontal profiles surrounding the transverse edges of the boards makes it impossible to disassemble the building afterwards, or at least makes it more difficult to disassemble and hinders the full exploitation of all its components.

The horizontal profiles that surround the transverse edges of the planks are visible on the construction surfaces, which breaks the continuity of the wood, thus altering the appearance of said surfaces.

GB2065740 discloses a modular building system comprising longitudinally stackable components. Each component has transverse holes extending therethrough, at least one hole having a groove extending to the periphery of the component, said grooved holes being connected by grooved connectors. The problem regarding this system lies in the existence of separation between the holes and connectors once assembled, because the holes and the grooves are made directly in the component, thus reducing the rigidity of the structure.

Description of the invention

An object of the present invention is to solve the aforementioned problems using a system for the construction of buildings that makes use of modules or panels as described above, in which the union of the coplanar panels, both horizontally and vertically, and the union of said panels with the roof and foundation structure, it is carried out without welding, by means of simple and fast joining systems that allow the reduction of assembly times.

In the construction system of the invention, the mechanical elements or fittings are part of the panels and of the joint between them, so that they are hidden inside the panels, thus eliminating the thermal bridges.

In addition, using hidden hardware for joints gives visual continuity to the wooden surfaces of the construction.

On the other hand, the joints between panels and between these panels and the roof and the foundation, can be easily disassembled, which makes it possible to disassemble the building, if desired.

Another advantage of the system of the invention is that the wood is insulated from the foundation, which prevents moisture absorption, keeping the panel seats dry, preventing rotting and fungus settling, all of which involve less frequent maintenance periods. and a longer duration for building.

Another advantage of the construction system of the invention is its versatility. As different plank profiles can be used, it is possible to obtain constructions with walls and / or partitions that form different angles.

The construction system of the invention is intended for the construction of buildings of one or more plants using wood panels with a known constitution, comprising vertical planks of solid wood, attached by their vertical edges, where they have dovetail assemblies. The boards are joined by tension bars that are laid horizontally through aligned horizontal holes, which cross the boards between their vertical edges. These bars have threaded ends to screw them. The horizontal union between panels is carried out by means of these tension bars and nuts, with a known procedure.

According to the invention, the union between the overlapping coplanar panels and between the panels and the structure of the roof and the foundation, is carried out by means of joining elements that are hidden in the panels, so as not to break the continuity of the wood in the construction. The mentioned joining elements include female profiles, intermediate male profiles and extreme male profiles.

The female profiles are embedded in central longitudinal formations in the longitudinal edges of the panels, said profiles leading to the vertical edges of the panels.

Said longitudinal formations are constituted by central channels in the transverse edges of each plank, located between the vertical edges of said planks. When all the boards of a panel are attached by their vertical edges, the central channels of the boards will be aligned to accommodate the female profiles. These profiles have a striated structure and an outer section that coincides with the central channels, cup-shaped, with a strangulation at the exit and a wider inner section.

The intermediate male profiles, which are part of the joining elements, join the overlapping coplanar panels together, and are mounted between the female profiles facing said overlapping coplanar panels. To this end, these intermediate male profiles have an intermediate flat core, which is as thick and as high as the strangulations of the opposite female profiles, to be housed in said throttles. They also have two wider longitudinal heads that are located in the widest inner section of the opposite female profiles.

As for the extreme male profiles, they function as a means of joining between panels and the roof or foundation structure and are mounted on the female profiles facing said roof or foundation structure.

The extreme male profiles that are a means of joining between the panels and roof structure and have a flat core of the same thickness as the throttle of the female profiles, but of greater height, and a longitudinal head that is wider than the female profiles . The core of the male profile protrudes from the female profile in a section that is inserted into an opposite groove of a sleeping brace of the roof structure.

With respect to the extreme male profiles that act as a means of joining between the panels and the foundation, they have a flat core as thick and as high as the strangulation of the corresponding female profile, to stay in said throttle, and a wider longitudinal head located in the widest inner section of the same female profile. The soul of this male profile protrudes longitudinally from the strangulation of the female profile in the section that forms a transverse plate supporting the foundation.

With the described formations of the central channels and the female and male profiles, the relative transverse movement between said profiles is prevented once they are coupled, which, therefore, will be carried out by sliding, introducing the female profiles from one of the ends of the channels of the panels and the male profiles through one of the ends of the female profiles.

According to a preferred embodiment of the invention, the walls of the female profiles extend, from their longitudinal edges, on wings that bend outwards at a right angle, in the same plane, these wings being located on the transverse edge of the planks, on both sides of the central groove. In addition, these wings can end in a final longitudinal flange, folded back at a right angle. The planks, in turn, have recesses in their transverse edges, on both sides of the longitudinal strangulation of the grooves, said recesses coinciding with the dimensions of the wings and the final flanges of the female profiles, so that said wings do not protrude from the surface of the transverse edges of the planks.

The recesses of the transverse edges of the planks, at least part of them, may be limited externally by a small flange that protrudes with respect to the wings of the female profiles. This formation can be useful, for example, in the lower edges of the boards that are laid with the foundation, and for a coupling effect between the overlapping coplanar panels.

The intermediate male profiles, such as the upper end male profiles joining the panels and the roof structure, will preferably be shorter than the panels, so that they will not reach the vertical edges of said panels, while the female profiles will be so long Like the panels

The female profiles can have, from the back, one or two longitudinal wings on the outside, which will be housed in grooves of the channels of the longitudinal edges of the panels at the back, in the same amount, position and dimensions of said wings Through both these wings and the panels there are

fixing screws and pins inserted perpendicularly through one of the side surfaces of the

panels. This system guarantees a perfect fastening of the female profiles to the panels. The transverse plates, which support the lower end male profiles and act as a means of connection between the panels and the foundation may include an intermediate seating area, with longitudinal grooves in the outer surface, and an extreme clamping area, with holes for the introduction of fixing screws. The aforementioned grooves can help prevent moisture from rising from the foundation.

Brief description of the drawings

The accompanying drawings illustrate an example of an embodiment that is described in detail to help better understand the features and advantages of the system of the invention. In the drawings: Figure 1 shows an elevation view of part of a wall comprising four coplanar panels, two of

which are aligned and superimposed on the other two.

Figure 2 and 3 show horizontal sections of a wall, taken along the lines II-II and III-III of the Figure 1, respectively, on a larger scale, showing the horizontal union between the panels. Figure 4 shows a vertical section of the two overlapping coplanar panels, taken along the line of

Section IV-IV of Figure 1, on a larger scale.

Figure 5 shows a perspective view of one of the wooden panels that are part of the wall part of Figure 1 Figure 6 shows a partial vertical view of a two-story building, built using the system of the

invention. Figure 7 shows a cross section of the female profile. Figure 8 shows a cross section of the intermediate male profile. Figure 9 shows a cross section of the upper end male profile, to join the panels and the structure

covering.

Figure 10 shows a cross section of the lower end male profile, for joining the panels and the foundation. Figure 11 shows a vertical section of one of the boards that form the panels. Figure 12 shows a partial vertical section of the joint between the wooden panels and the roof, taken

according to the cutting line XIII-XIII of figure 6.

Figure 13 shows a perspective view of the elements that are part of the joint between the panels of wood and foundation. Figure 14 shows a perspective view of the elements that are part of the vertical joint between panels

overlapping coplanaries.

Figure 15 shows a perspective view of the elements that are part of the junction between the panels and the structure. Figure 16 shows a plan view of an example orthogonal joint between two walls, constructed using the

system of the invention. Figure 17 and 18 show views similar to that of Figure 16, with possible variants of execution. Figure 19 shows a section similar to that of Figure 7, with a possible execution variant. Figure 20 shows a section similar to that of Figure 4, with the female profile of Figure 19. Figure 1 shows part of a wall comprising four coplanar panels (1, 2, 3, 4), two of which

They are aligned and superimposed on the other two. As can be seen in Figure 5, each of these panels comprises vertical solid wood planks

(5) that are attached by their vertical edges, where they have dovetail assemblies (6), as can be seen in Figures 2 and 3.

The planks (5) have horizontal holes (7) between their vertical edges that are aligned in each panel to receive the tension bars (8) that protrude from the vertical edges of the panels in threaded sections into which the fixing screws are introduced (9), as can be seen in Figures 2 and 3.

The horizontal connection between the panels located at the same height, for example the panels (3) and (4), is carried out through these bars. For this, the tension bars (8) of the panels extend beyond the fixing screw

(9) in a section (8 ') that is introduced through a horizontal hole (7') of the adjacent end plank (5) of the panel (4), until a cavity (10) is reached, which is accessible by a throttling front (11), through which a fixing nut (12) can be introduced.

Both the constitution of the panels and the way they join together horizontally, as described above, correspond to systems that are already known.

In the panel assembly scheme of Figure 1, the panels (3) and (4) may correspond to the ground floor of a construction, while the panels (1) and (2) may correspond to an upper floor.

The vertical connection between overlapping coplanar panels, for example between the panels (1) and (3) and between the panels

(2) and (4), is carried out by means of hidden joining elements in the panels, as can be seen in Figure 4. These joining elements include female profiles (14), which are shown in Figure 7 and male profiles intermediates (15), shown in Figure 8.

The female profiles (14) are embedded in central longitudinal formations in the longitudinal edges of the panels, which end in their vertical edges.

These formations are constituted by central channels (17) in the transverse edges of the planks (5) that end in the vertical edges, as can be seen in Figure 11.

As can be best seen in Figure 4, the central channels (17) and the female profiles (14) have similar cup shapes, which determine a throttling (18) at the outlet and a wider inner section (19) in the channels (17), figure 11, while, by contrast, in the profiles (14) (figure 7), they determine a strangulation

(twenty)

 of parallel walls that are close to each other and a wider section (21), the outer part of the throttle (20) of the section (21) corresponding to the inner part of the throttle (18) and the inner section

(19)

 of the channels (17).

In this way, the female profiles (14) are introduced into the formations of the panels defined by the channels

(17)

 through each of its ends, by sliding, preventing the female profile (14) from sliding transversely with respect to the channels (17).

The intermediate male elements (15), as best seen in Figure 8, comprise a flat core (22) that ends with wider end heads (23). The core (22) is as wide and as high as the throttles of the opposite female profiles (14) of two overlapping coplanar panels, for example the panels (2) and (4) in Figures 1 and 4. In turn, the final heads (23) are wider than the soul (22) and have the appropriate dimensions to be placed in the cavity of the section (21) of the wider female profiles (14).

With the constitution described, the intermediate male profile (15) has to be introduced in the opposite female profiles

(14) of two panels superimposed by sliding, introducing them into the throttles of said female profiles in one of the vertical edges of the panels, and once housed inside the female profiles, as can be seen in Figure 4, the panels (2) and (4) will be fixed together, thus acting the intermediate male profiles (15) and the female profiles (14) as connecting elements between overlapping coplanar panels.

The system of the invention also includes extreme male profiles (16) and (16 ') that join together the panels and the roof and foundation structure of a building, respectively, as will be discussed with reference to Figures 6 and 12 to 15.

The end male profiles (16), shown in Figure 9, comprise a flat core (24) that ends longitudinally on one side in a head (25). This soul (24), as can be seen in Figure 4, is as wide as the throttling (20) of the female profiles (14) but higher than said profile. The head (25) has the appropriate dimensions to be housed within the widest section (21) of the female profiles (14). In this way, the core (24) of the male profile (16) will protrude from the female profile (14), as can be seen in Figure 4, in a connection section (24 ') with the cover structure, as will be explained more forward, with reference to figures 6, 12 and 15.

The end male profiles (16 '), figure 10, which act as a means of joining between the panels and the foundation, comprise a flat core (24') that ends longitudinally on one side on a head (25 '). The soul (24 '), as can be seen in Figure 4, is as tall and as thick as the throttling (20) of the female profiles (14), the head (25') having the appropriate dimensions to accommodate in the section (21) wider of said female profiles (14).

As can be seen in Figure 7, the walls of the female profile (14) extend into coplanar wings (26) folded out at right angles and ending in a longitudinal flange (27) bent at right angles backwards.

As for the planks (5) that form the panels, they have, in turn, recesses (28) in their transverse edges, as can be seen in Figure 11, on both sides of the channels (17), said recesses coinciding ( 28) with the dimensions of the wings (26) and the end tabs (27) of the female profiles. Thus, as can be seen in Figure 4, the female profiles (14), with their wings (26) and tabs (27), are fully embedded in the planks, without protruding from their transverse edges, thus achieving perfect support between the overlapping coplanar panels and a total concealment of the fittings that act as vertical joining elements of the panels.

The core (24 ') of the end male elements (16'), which are a means of joining between the panels and the foundation, figure 10, ends longitudinally in a transverse support plate (30), which includes a seating area (31), provided on its outer surface with grooves (32) and an external clamping area (33), which has holes for inserting fixing screws into the foundation, as will be indicated later with reference to Figure 6.

The female profiles (14), figure 7, can have in the widest area (21) a circular or polygonal outer edge, which will allow to achieve greater support of this area in the channel (17) of the planks (5). The internal hollow of this area (21) can have a rectangular, polygonal, circular contour, etc.

Similarly, the heads (23), (25) and (25 ') of the intermediate and end male elements may have a polygonal, triangular, angular, oval contour, etc., which will always be wider than the soul ( 22), (24) and (24 ') corresponding, but preferably thinner than the contour of the internal cavity of the section (21) of the female profiles (14).

As for the widening (19) of the channels (17) of the planks (5), it will also preferably be circular, although it could also have other shapes.

Figure 6 shows, schematically and in a vertical section, together with the details shown in Figures 12 to 15 a two-storey construction constructed using the system of the invention. The wall shown in the drawing includes, like the wall in Figure 1, an upper panel (1 ') and a lower panel (3'), which are connected vertically by female profiles (14) and intermediate male profiles (15) , as described with reference to Figure 4. Similarly, the upper panel (1 ') and the lower panel (3') have female profiles (14) and extreme male profiles (16) mounted on their free horizontal edges. and (16 '), also similar to that described with reference to Figure 4. The section (24') of the core (24) of the end male profiles (16) is inserted into an opposite groove (35) of the sleeping brace (35 '), of the roof structure (38), to which they are fixed by pins or screws (36). The lower end male profile (16 ') rests, through a seating area (31) of the transverse plate (30), on the foundation (37), to which it is anchored by bolts (36'), introduced to through holes in the extreme clamping zone (33). The grooves (32) of the intermediate seating area (31) are responsible for preventing moisture from rising to the boards of the lower panel (3 ’).

Figures 12 to 15 show in detail, in an exploded perspective view in section, the different components of the joint between the panels and the cover and the foundation, and between overlapping coplanar panels.

As can be seen in Figures 12 and 15, the male end profile (16) can be much shorter than the panels (1 ') and the female profiles (14), the soul (24) having the shape of a plate, with holes (26 ') to insert the screws or plugs (36) into the sleeping brace (35').

Figure 6 also shows the roof (38) and the slab (39) of the first floor that is laid on stirrups (40) anchored to the lower panels (3 ’). On the slabs, it is possible to lay a board (41), an intermediate soundproofing layer (42), which would include the necessary installation elements, and an upper floor (43) on which they will be laid, attached to the upper panels (1 ), a skirting board (44). In addition, it can have an internal insulation layer (45) and a finishing panel (46), for example made of plaster, with a skirting board (47). On the concrete screed there can be an impermeable sheet, a leveling mortar and a screed (49), made, for example, of ceramic.

As can be seen in Figure 11, the recess (28) of the lower transverse edge of the planks (5), will be limited externally by a small flange (50) that acts as a drip element in the lower panel (3 ') of the Figure 6, and as a seat and cover element in the upper panel (1 ') on the lower panel (3'). Using the tabs (50) and the seating area (31) of the lower support plate (30) on the floor (37), it is possible to insulate the lower panels (3 ’) of the foundation. In addition, using the lower support plate, the voltage transmitted by the building when it is under load is neutralized.

Figures 16 to 18 show different ways of joining between walls.

In Figure 16, the panels comprising the planks (5) are joined together orthogonally by a plank

(51)

 with a special profile, which has two faces with dovetail joints that coincide with the two adjacent boards (5).

Figure 17 shows planks (52) and (53) with which angles that are less than and greater than 90 ° can be achieved, respectively. In this case, as in Figure 18, planks (54) are also included, which act as separation elements to obtain a double wall. Also included are planks (55), which have a hole

(56)

 which can be used, for example, for service pipelines.

Figures 16 to 18 show the possibility of interconnecting planks of wood of straight section (5) with planks of angular section and planks with sections with other shapes, to build orthogonal and polygonal constructions or a mixture of both, thus allowing great freedom of design.

To carry out the preparation of the panels for the construction of buildings it will be necessary to prepare the planks, with the longitudinal molding of their vertical edges for the dovetail joints so that a perfect coupling can be achieved. Then the edges of the planks are shaped to form the channels (17). Next, the wooden planks can be drilled between their vertical edges to introduce the tension bars (8). After that, the female profiles (14) are assembled in the channels (17) of the panels. This is followed by the prestressing of the panels (5) by tension bars (8). After that, they can be transported to the construction site, where the rest of the elements are mounted, as described with reference to the drawings.

Figure 19 shows a variation of the execution (14 ') of the female profile (14), represented in Figure 7. The profile (14') has two longitudinal wings (58) on the outside, from the back, which are parallel to the middle plane of said profile. As can be seen in figure 20, these longitudinal wings (58) are housed in the grooves (59) of the central channels (17), of the longitudinal edges of the panels, from their rear, said wings (58) having screws (62) which are introduced through one of the external surfaces of the panels, to act as an attachment element to said panels.

The walls of the female profiles (14 ’) can end with elongated outer ends (60), figure 19, which reinforce the profiles. The central channels (17) of the panels can have a rectangular section, figure 20, as wide as the external section of the female profiles (14 '), with their extended ends (60), since the fixing of said profiles in the Central channels (17) are achieved by screws (62). The rest of the profile shown in Figure 20 coincides with that of Figure 7, and the assembly of Figure 19 coincides with that described with reference to Figure 4, the same references being applied to the same elements in both cases.

Claims (11)

1. System for the construction of wooden, single-storey or multi-storey buildings, using panels (1, 2, 3 and 4) comprising groups of coplanar vertical planks (5) attached by their vertical edges and coupled by tension bars ( 8) introduced through aligned holes (7), located (5) between the vertical edges of the planks, while the vertical union between overlapping coplanar panels and between panels and a roof and / or foundation structure is carried out by auxiliary joining elements located in central channels (17) of the panels along their longitudinal edges, the aforementioned joining elements comprising:

-

 female profiles (14-14 ’) housed in the aforementioned central channels (17) of the panels

-

 intermediate male profiles (15) housed in the opposite female profiles (14-14 ’) of two overlapping coplanar panels, and

-

 extreme male profiles (16-16 ’) housed in the female profile (14-14’) facing the roof and / or foundation structure and attached to said roof and / or foundation structure, characterized in that

-

 the female profiles (14-14 ’) are striated and have the same shape as the central channels (17) of the panels, with a throttling (18-20) at their exit and a wider internal section (19-21); Y

-

 the intermediate male profiles (15) have an intermediate flat core (22), which is as thick and as high as the throttles (20) of two opposite female profiles of the overlapping coplanar panels, and two extreme longitudinal heads (23), more wide than strangulation (20) but smaller than internal sections

(21) of the two opposite female profiles; Y - the extreme male profiles (16-16 ') have a flat core (24-24') that is as thick as the width of the throttle (20) of the corresponding female profile (14-14 '), and a longitudinal head (25 -25 ') wider than said throttle (20) but smaller than the internal section (21) of the female profile (14-14'), the flat core (24-24 ') protrudes from the throttle (20) of the female profiles (14-14 ') in a section that connects to the roof and / or foundation structure, and the horizontal joining of the panels is achieved by tension bars.

2.

 System according to claim 1, characterized in that the section of the flat core (24) of the end male profiles (16) protruding from the female profiles (14-14 ') is constituted by a flat section (24') which is an extension of said soul and is introduced into a groove (35) opposite the sleeping brace (35 ') of the roof structure.

3.

System according to claim 1, characterized in that the intermediate male profiles (15) have an intermediate flat core (22), which is as thick and as high as the throttles (20) of the opposite female profiles (14-14 ') , corresponding to the overlapping coplanar panels, which are housed in said throttles, and two wider longitudinal heads (23) that are housed in the cavity of the wider internal section (21) of the opposite female profiles (14-14 ' ).

Four.

 System according to claim 1, characterized in that the end male profiles (16) that join a sleeping brace of the cover have a flat core (24) that is as thick as the width of the throttle

(20) of the corresponding female profile (14-14 '), but higher, and a wider longitudinal head (25), which is located in the cavity of the wider internal section (21) of the same female profile, with the core (24) of the male profile with respect to the throttling (20) of the female profile in a section that is inserted into an opposite groove of the sleeping cover strap.

5.

 System according to claim 1, characterized in that the end male profiles (16 ') that are coupled with the foundation have a flat core (24') that is as thick and as high as the throttling (20) of the female profile (14 -14 ') corresponding, to stay in it, and a wider longitudinal head (25'), which is housed in the cavity of the wider internal section (21) of the same female profile (14-14 '), protruding longitudinally the core (24 ') of the male profile with respect to the throttle (20) of the female profile (14-14') in a section that forms a transverse support plate (30) on the foundation.

6.

 System according to claim 1, characterized in that the walls of the female profiles (14-14 ') extend, from the longitudinal edges, on wings (26) bent at right angles towards the outside, in the same plane, and are lying on the transverse edge of the planks (5), on both sides of the central channel (17) of the panels.

7.

System according to claim 6, characterized in that the wings (26) of the female profiles (14-14 ') end in an extreme longitudinal flange (27), bent backwards at a right angle.

8.

 System according to claims 1, 6 and 7, characterized in that the planks (5) have recesses (28) in the transverse edges, on both sides of the longitudinal outlet of the central channel (17). These recesses (28) have the same dimensions as the wings and end tabs of the female profiles (14-14 ’).

9.

 System according to claim 8, characterized in that the recesses of the lower transverse edge of the planks will be limited externally by a small flange (50), which protrudes, on the lower side, with respect to the wings (26) of the female profiles ( 14-14 ').

10. System according to claim 1, characterized in that the male profiles (15 and 16) are shorter than the longitudinal edges of the panels. 11. System according to claim 1, characterized in that the female profiles (14 ’) have, from the rear, at least one longitudinal wing (58) on the outside; and the central channels (17) of the longitudinal edges of the panels have, from the rear, grooves (59) in the same amount, position and contour as said longitudinal wings (58). A system according to claim 11, characterized in that the longitudinal wing (s) of the female profiles (14 ') and the grooves (59) of the striated formations have fixing pins or screws ( 62) introduced through them.