EP3973114B1 - Construction element - Google Patents

Description

TECHNICAL AREA

The present invention relates in particular to a construction element as well as to a construction assembly comprising several elements allowing the composition of a wall using the elements in question.

A preferred application concerns the building and public works industry, in particular for the creation of low walls, retaining walls, noise barriers or others.

STATE OF THE TECHNIQUE

In this last field, construction elements are known for dry mounting retaining walls with variable inclination. Using this technique, we can vary the wall composition, the system being modular. For example, patent publications WO2015117827- A1 , WO 90/15905 A2 And US 2012/159889 A1 show a construction element of substantially rectangular parallelepiped shape offering a multiplicity of association combinations with construction elements which are juxtaposed and/or superimposed on it.

In certain situations, notably when it is useful to backfill the retaining walls or to make turns, such elements are however not always suitable.

There is a need to provide an improved element in which the cooperation between the elements is improved with good mechanical strength.

The other objects, characteristics and advantages of the present invention will appear on examination of the following description and the accompanying drawings. It is understood that other benefits may be incorporated.

SUMMARY

• une première paroi définissant une face avant et une deuxième paroi définissant une face arrière, les première et deuxième parois étant espacées selon une direction longitudinale ;
• une troisième paroi et une quatrième paroi définissant respectivement un premier flanc et un deuxième flanc espacés selon une direction transversale, et reliant chacune les première et deuxième parois, et dans lequel des premières tranches de chacune des première, deuxième, troisième et quatrième parois définissent une face de base, et des deuxièmes tranches de chacune des première, deuxième, troisième et quatrième parois définissent une autre face , opposée à la face de base suivant une direction en hauteur, caractérisé en ce que la deuxième paroi définit une face arrière parallèle à la face avant et comporte une portion d'épaisseur linéairement croissante en direction de la face de base rejoignant la troisième et la quatrième parois et formant une face interne inclinée de la deuxième paroi, à l'opposé de la face arrière.

The present invention falls within this framework and proposes for this purpose a construction element according to claim 1, comprising:

• a first wall defining a front face and a second wall defining a rear face, the first and second walls being spaced in a longitudinal direction;
• a third wall and a fourth wall respectively defining a first sidewall and a second sidewall spaced in a transverse direction, and each connecting the first and second walls, and in which first slices of each of the first, second, third and fourth walls define a base face, and second edges of each of the first, second, third and fourth walls define another face, opposite the base face in a direction in height, characterized in that the second wall defines a rear face parallel to the front face and comprises a portion of linearly increasing thickness in the direction of the base face joining the third and fourth walls and forming an inclined internal face of the second wall, opposite the rear face.

Thus, we have an element whose front and rear faces are parallel and advantageously flat while presenting a second wall (corresponding to the rear of the element, even if it is understood that the rear part can be arranged at the front of a retaining wall) which is not a wall of constant thickness. In fact, the portion of increasing thickness makes it possible to define a space inside the element and having the shape of a cavity gradually opening towards the front face. While forming this cavity of variable vertical section, the mechanical resistance is high thanks to the large section of the second wall carrying the rear face in its basal part. In particular, at the junction between the second wall and the third and fourth walls, the quantity of material is significant which ensures good transmission of forces. Furthermore, when the element of the invention is superimposed with a similar element, and there is a propensity of the wall thus formed to tilt towards the front face, the inclined wall formed by the portion of increasing thickness forms a favorable triangulation element the resistance to rupture of the second wall. The stability of the whole is therefore improved.

Another advantage of the portion of linearly increasing section is to offer a surface favorable to the head-to-tail cooperation of two similar superimposed elements. Indeed, the invention forms an inclined wall which can serve as a guide for insertion of an element superimposed on another in a direction while the inclined wall formed on the superimposed element provides insertion guidance in a direction perpendicular to the first one. The two elements can thus be nested one inside the other in a progressive manner, even if their relative starting position is not precise.

The walls of the element being spaced apart, the element is perforated, therefore having an advantageous volume/weight ratio. This openwork character can, moreover, be through from the base face to the opposite face with two stages, which simplifies manufacturing, limits the weight and ensures complete backfilling which can pass through a plurality of superimposed elements. . At the same time, the element can be relatively heavy and for example cannot be handled by hand on the construction site. In this context, the formation of the inclined internal face of the invention simplifies positioning using machines, even if the initial positioning accuracy of the element is low; the inclined internal face can be used in this context for progressive guidance until the final position of the element.

The invention further relates to an assembly comprising a plurality of construction elements according to the invention allowing in particular the composition of a wall wall; this composition can be with a bend, such a bend being able to be curved (concave or convex) or even at a right angle. Generally, at least two elements will be superimposed to form a stack. Optionally, the superimposed elements can be offset in the longitudinal direction so as to form a retaining wall with a fruit. Angles can also be formed, in particular at right angles by head-to-tail nesting of superimposed elements.

BRIEF DESCRIPTION OF THE FIGURES

• La figure 1 montre l'élément de construction de la présente invention.
• La figure 2 montre l'élément de construction de la présente invention lors d'un premier empilement avec un deuxième élément de construction.
• La figure 3A montre un exemple d'empilement d'une pluralité d'éléments de construction de sorte à réaliser une paroi murale avec un virage à angle droit.
• La figure 3B montre une vue du dessus de la figure 3A.
• La figure 3C montre une vue en perspective de la figure 3A.
• La figure 4A montre une vue du dessus de l'élément de construction de la présente invention.
• La figure 4B montre une vue du côté de l'élément de construction de la présente invention.
• La figure 4C montre une vue du côté de l'élément de construction de la présente invention.

The aims, objects, as well as the characteristics and advantages of the invention will emerge better from the detailed description of an embodiment of the latter which is illustrated by the following accompanying drawings in which:

• There figure 1 shows the construction element of the present invention.
• There figure 2 shows the construction element of the present invention during a first stacking with a second construction element.
• There Figure 3A shows an example of stacking a plurality of construction elements so as to produce a wall wall with a right angle turn.
• There Figure 3B shows a top view of the Figure 3A .
• There Figure 3C shows a perspective view of the Figure 3A .
• There Figure 4A shows a top view of the construction element of the present invention.
• There Figure 4B shows a side view of the construction element of the present invention.
• There Figure 4C shows a side view of the construction element of the present invention.

The drawings are given as examples and do not limit the invention. They constitute schematic representations of principle intended to facilitate the understanding of the invention and are not necessarily on the scale of practical applications.

DETAILED DESCRIPTION

• Selon un exemple, la portion d'épaisseur linéairement croissante est suivie, à l'opposé des troisième et quatrième parois, d'une portion terminale d'épaisseur constante.
  Grâce à cette portion d'extrémité, on dispose d'une partie en forme de cran pouvant servir à une coopération efficace avec une partie complémentaire sur la face de base d'un élément identique superposé.
• Selon un exemple, la portion terminale s'étend au-delà de l'extrémité supérieure de la face avant au niveau de l'autre face.
  Ainsi, le point culminant de l'élément est, au niveau de cette face, situé sur la deuxième paroi. Autrement dit, la face arrière est surélevée. Habituellement, la face avant est la face surélevée. Grâce à ces dispositions, la deuxième paroi peut coopérer avec un élément de butée en creux sur la face de base d'un élément superposé, de sorte à retenir, dans une direction avant/arrière, l'empilement.
• Selon un exemple, la face de base comporte au moins une cannelure configurée pour autoriser l'insertion dans la cannelure d'une portion terminale d'un autre élément.
  Cette disposition permet de faire coopérer l'élément avec un élément similaire par imbrication.
• Selon un exemple, la cannelure est évasée en direction de la face de base.
  Grâce à ces dispositions, l'imbrication en superposition de deux éléments similaires peut être réalisée même si le positionnement relatif initial entre les deux éléments n'est pas parfait, la partie évasée servant à guider progressivement la portion terminale dans la cannelure.
• Selon un exemple, l'élément comprend plusieurs cannelures.
  Grâce à ces dispositions, on peut modifier le lieu de coopération de la portion terminale par rapport à un élément superposé, de sorte à faire varier le fruit du mur à former.
• Selon un exemple, la portion d'épaisseur linéairement croissante forme un angle supérieur à 20° avec la face arrière.
  Cette sélection offre un effet de triangulation important entre les parties verticales et les parties horizontales de l'élément, effet favorable à la reprise des efforts.
• Selon un exemple, suivant la direction transversale, la dimension de la face avant est au moins deux fois supérieure à celle de la face arrière.
• Selon un exemple, l'autre face comporte un fond plan défini par une portion de la deuxième tranche des troisième et quatrième parois, le fond plan étant relié par un premier côté, à la face interne inclinée.
• Selon un exemple, la deuxième paroi comporte, suivant la direction transversale, une dimension inférieure ou égale à la dimension du fond plan suivant la direction longitudinale.
  Grâce à cette disposition, on peut facilement emboîter deux éléments superposés dont les autres faces sont mises en vis-à-vis, à 90°. Leur fond plan entre en contact alors que leurs faces internes inclinées servent de guidage progressif.
• Selon un exemple, le fond plan est situé à la moitié de la dimension en hauteur de la première paroi.
  Grâce à ces dispositions, lors de l'imbrication de deux éléments superposés, la face de base de l'un des éléments se retrouve à un même niveau de hauteur que l'autre face de l'autre élément.
• Selon un exemple, l'ensemble comporte au moins un premier élément et un deuxième élément superposés de sorte que les directions longitudinales des premier et deuxième éléments soient perpendiculaires, l'autre face du premier élément étant en contact de l'autre face du deuxième élément.
  On forme ainsi un virage à angle droit.
• Selon un exemple, le fond plan du premier élément est au contact du fond plan du deuxième élément.

Before beginning a detailed review of embodiments of the invention, the following are set out as optional characteristics which may possibly be used in combination or alternatively:

• According to one example, the portion of linearly increasing thickness is followed, opposite the third and fourth walls, by a terminal portion of constant thickness.
  Thanks to this end portion, we have a notch-shaped part which can be used for effective cooperation with a complementary part on the base face of an identical superimposed element.
• According to one example, the terminal portion extends beyond the upper end of the front face at the level of the other face.
  Thus, the highest point of the element is, at this face, located on the second wall. In other words, the rear side is raised. Usually the front side is the raised side. Thanks to these arrangements, the second wall can cooperate with a hollow abutment element on the base face of a superimposed element, so as to retain, in a front/rear direction, the stack.
• According to one example, the base face comprises at least one groove configured to authorize the insertion into the groove of a terminal portion of another element.
  This arrangement allows the element to cooperate with a similar element by nesting.
• According to one example, the groove is flared towards the base face.
  Thanks to these arrangements, the overlapping nesting of two similar elements can be carried out even if the initial relative positioning between the two elements is not perfect, the flared part serving to gradually guide the terminal portion into the groove.
• According to one example, the element comprises several grooves.
  Thanks to these arrangements, it is possible to modify the place of cooperation of the terminal portion in relation to a superimposed element, so as to vary the fruit of the wall to be formed.
• According to one example, the portion of linearly increasing thickness forms an angle greater than 20° with the rear face.
  This selection offers a significant triangulation effect between the vertical parts and the horizontal parts of the element, an effect favorable to the recovery of forces.
• According to one example, in the transverse direction, the dimension of the front face is at least twice that of the rear face.
• According to one example, the other face includes a planar bottom defined by a portion of the second slice of the third and fourth walls, the planar bottom being connected by a first side, to the inclined internal face.
• According to one example, the second wall comprises, in the transverse direction, a dimension less than or equal to the dimension of the flat bottom in the longitudinal direction.
  Thanks to this arrangement, two superimposed elements can easily be fitted together, the other faces of which face each other at 90°. Their flat bottom comes into contact while their inclined internal faces serve as progressive guidance.
• According to one example, the flat bottom is located half the height dimension of the first wall.
  Thanks to these arrangements, when two superimposed elements are nested, the base face of one of the elements finds itself at the same height level as the other face of the other element.
• According to one example, the assembly comprises at least a first element and a second element superimposed so that the longitudinal directions of the first and second elements are perpendicular, the other face of the first element being in contact with the other face of the second element.
  This forms a right angle turn.
• According to one example, the flat bottom of the first element is in contact with the flat bottom of the second element.

Without limitation, the invention can be made from concrete, for example by molding. The concrete can have a conventional reinforcement. Advantageously, the element is in one piece, in a single coherent element called construction element.

By “face” we mean a two-dimensional element, the two-dimensional element is not necessarily located on the same plane and can be discontinuous.

By “wall” is meant a three-dimensional element, the three-dimensional element is not necessarily located on the same plane and can be discontinuous.

The perspective of the figure 1 adopts a three-dimensional reference frame corresponding to three preferred directions of the element of the invention. The dimension L corresponds to the longitudinal direction of the construction element 1; advantageously, it is the main dimension of the element, but this case is not limiting. The dimension l corresponds to the lateral or transverse direction of the element; it is preferably oriented according to the width of the wall composition to be constructed. Finally, the dimension h forms the height of element 1; although this is not limiting, it is advantageously following this direction that the height of the wall composition is constructed.

The construction element 1 has a plurality of faces which can in particular serve as contact surfaces with other elements or with the ground, or serve as facade parts. Thus, a front face 2 is constituted by means of a first wall 8 referenced in perspective view on the figure 1 . The front face 2 may be flat or present a pattern allowing you to vary the decor of the wall facade. Opposite the front face 2, a rear face 3 is also visible in all of the figures and is carried by a second wall 9. Advantageously, the first and second walls 8, 9 are parallel between them. As shown in the figure 1 , it is further advantageous that the second wall 9 has a width dimension less than that of the first wall 8.

The first and second walls 8, 9 are connected by two other walls, respectively third wall 10 and fourth wall 11. The latter have a preferred orientation preferably perpendicular to that of the first, second walls 8, 9. In the configuration adopted at the different Figures, the walls 10, 11 are directed along the height of the construction element 1. Advantageously, the third and fourth walls 10, 11 are parallel to each other. In the illustrated embodiment, they are spaced in the transverse direction and define, with the first and second walls 8, 9, an opening passing right through the construction element 1. This area can be backfilled during construction. from the wall. Furthermore, a preferred configuration is that the spacing between the third and fourth walls 10, 11 is less than the width dimension of at least one of the first wall 8 and the second wall 9.

Preferably, a slice of each of the four walls 8, 9, 10, 11 thus described defines a base face 6 of the element 1. This set of first slices is preferably coplanar so as to define a planar base face 6; it will however be seen that it can include hollow areas used for nesting with other elements. It is also preferably oriented perpendicular to the four walls 8, 9, 10, 11. The second wall 9 comprises a portion of linearly increasing thickness 13 in the direction of the base face 6 joining the third and fourth walls 10, 11 and forming an inclined internal face 91 of the second wall 9, opposite the rear face 3. The inclined internal face 91 then makes it possible to better distribute the mechanical forces exerted on the construction element 1. In fact, the portion of increasing thickness makes it possible to define a space interior to the element 1 and having the shape of a cavity gradually opening towards the front face 2. While forming this cavity of variable vertical section, the mechanical resistance is high thanks to the large section of the second wall 9 carrying the rear face 3 in its basal part. In particular, at the level of the junction between the second wall 9 and the third and fourth walls 10, 11, the quantity of material is significant which ensures good transmission of forces. Furthermore, when the element 1 of the invention is superimposed with a similar element 1, and there is a propensity of the wall thus formed to tilt towards the front face 2, the inclined face 91 formed by the portion of increasing thickness 13 forms a triangulation element favorable to the breaking resistance of the second wall 9. The stability of the assembly is therefore improved.

Another advantage of the portion of linearly increasing section 13 is to offer a surface favorable to the head-to-tail cooperation of two similar superimposed elements 1. Indeed, the invention forms an inclined face 91 which can serve as a guide for insertion of an element 1 superimposed on another element 1 in one direction while the inclined face 91 formed on the superimposed element 1 ensures guidance of insertion following a direction perpendicular to the first. The two elements 1 can thus be nested one inside the other in a progressive manner, even if their relative starting position is not precise.

In addition, the portion of linearly increasing thickness 13 is surmounted by a portion called the terminal portion 14, opposite the third and fourth walls 10,11, said terminal portion 14 is characterized by a constant thickness. The terminal portion 14 then forms a notch, which can serve to improve the cooperation between the construction element 1 and another construction element 1 having at least one recess intended to accommodate the terminal portion 14. The recess is preferably located on the base face 6 and appears in the form of at least one groove 61, hollows and notches are complementary. Furthermore, the limitation between the portion of linearly increasing thickness 13 and the terminal portion 14 is located at the same height as the upper end of the front face 2. The groove 61 is configured to authorize insertion into the groove 61 of the terminal portion 14 of another element 1. The terminal portion 14, for its part, extends beyond the upper end of the front face 2 at the level of another face 15, opposite the face of base 6 following the height direction. This other face 15 is formed by second slices of each of the first, second, third and fourth walls 8, 9, 10, 11. Thus, the highest point of the construction element 1 is, at the level of this other face 15, located on the second wall 9. In other words, the rear face 3 is raised. Thanks to these arrangements, the second wall 9 can cooperate with a recessed abutment element on the base face 6 of a superimposed element, so as to retain, in a front/rear direction, the stack as shown in figure 2 .

Furthermore, the groove 61 can be flared towards the base face 6. Thanks to this shape, the overlapping nesting of two similar elements can be achieved even if the initial relative positioning between the two elements 1 is not perfect, the flared part serving to gradually guide the terminal portion 14 in the groove 61. It is also very advantageous that the construction element 1 comprises several grooves 61. In fact, this makes it possible to modify the place of cooperation of the terminal portion 14 in relation to a superimposed construction element 1, so as to vary the fruit of the wall to be formed. By “fruit of the wall”, we mean the obliquity of the exterior face of the wall. The grooves 61 can extend over the entire length L of the element 1 in the longitudinal direction or can extend for example over only half the length L of the element 1 in the longitudinal direction. Thus it is easy to obtain many different stacking configurations depending on the position of the end portion 14 in one of the grooves 61 of another construction element 1. The grooves 61 can be located along the third and fourth walls 10 and 11 on the base face 6, in addition to being located at the level of the second wall 9 on the base face 6.

The other face 15, thus constituted, has a first stage 151, called the front stage, corresponding to a portion of the second sections, in particular the second section of the first wall 8, and a second stage 152, called the rear stage, corresponding to a portion of the second slices, in particular of the second slice of the second wall 9. The second stage 152 corresponds to the upper end of the terminal portion 14. The connecting edge 12 is preferably straight. It is advantageously perpendicular to floors 151, 152.

The other face 15 comprises a flat bottom 150 defined by a portion of the second edges, in particular the edges of the third and fourth walls 10,11, the flat bottom 150 being connected, from a first side, to the inclined internal face 91. flat bottom 150 is connected by a second side to the connecting edge 12.

More precisely, the third wall 10 and the fourth wall 11 respectively define a first sidewall 5 and a second sidewall 4 spaced in a transverse direction, and each connecting the first and second walls 8, 9. A portion of the first sidewall 5 and a portion of the second side 4 are then included in the flat bottom 150.

Preferably, the flat bottom 150 is located at half a height dimension of the front face 2. Thus, when two superimposed elements 1 are nested, the base face 6 of one of the elements 1 is found at the same height level as the other face 15 of the other element 1.

According to an alternative example and not illustrated in the figures, the terminal portion 14 is absent from the block, the upper end of the front face 2 and the upper end of the rear face 3 are at the same height. In addition, the grooves 61 are absent according to this embodiment. Thus, to allow cooperation between two construction elements 1, the base face 6 of the element 1 forms a flat surface, which rests on the upper end of the front face 2 and the upper end of the face rear 3 of the other element 1, the two upper ends being at the same height.

As shown in particular by figure 1 , the first stage 151 comprises a portion of the second section of the second wall 9 defining the rear face 3 and a portion of the second section of the third and fourth walls 10, 11. As for the second stage 152, it comprises a portion of the second slice of the first wall 8 defining the front face 2 and a portion of the second slice, raised, of the third and fourth walls 10, 11. By this arrangement, the height of the rear face 3 is greater and preferably equal to twice the height of the front face 2.

There figure 2 shows a first possibility of cooperation between different elements 1. In this case, the elements 1 are superimposed so that the base face 6 of an element 1 is in contact with the other face 15 of an element 1 located below. According to this representation, the terminal portion 14 of an element 1 is in the groove 61 of another element 1.

There may also be an offset in the longitudinal direction between the elements 1, so that the edge of the first wall 8 of the elements is progressively shifted towards the rear as the wall is assembled. The latter is in this case constructed with a fruit.

On the Figures 3A to 3C , the elements 1 are strictly superimposed without any longitudinal offset. The wall facade is then formed, without discontinuity, by the association of the front faces 2. The intermediate spaces between the superimposed elements, particularly between the first floor 71 of a lower element relative to the base face 6 of an element located above, can be filled in the form of embankments.

In addition, the portion of linearly increasing thickness 13 forms an angle greater than 20° with the rear face 3. This selection offers a significant triangulation effect between the vertical parts and the horizontal parts of the element 1, an effect favorable to the resumption of efforts.

Furthermore, we can notice on the Figures 3A to 3C that the wall wall has an angle, typically a salient right angle. A first set of elements 1 is superimposed so as to form a first facade direction; preferably, this superposition is carried out so that the base face 6 of the elements is located downwards and the other face 15 is located upwards. Along the second facade direction, a first stack of elements 1 is configured to cooperate with an adjacent stack of elements 1 of the first facade direction. Here we take advantage of the stepped shape of the other face 15 of the elements 1. In fact, the elements 1 of this first stack of the second facade direction are turned over relative to those of the adjacent stack of the first direction of facade so that their base face 6 is directed upwards. In addition, the first stage 151 of these elements 1 applies to the first stage 151 of the elements 1 of the other stacking, the longitudinal directions of the elements being perpendicular between the two stacks assembled at an angle. It is understood that the assembly thus constituted alternates the installation of an element 1 of the first stack and of an element 1 of the second stack. An element 1 of a first stack is in contact with at least another element 1 of the same stack and an element 1 of the other stack.

Advantageously, the aspect ratios of the elements are configured so that, in this position, the front faces 2 of the two stacks are in contact or close, forming a right angle, by the edge of the vertical edge of the first wall 8 elements 1. At the same time, it is preferred that the connecting edge 12 of the elements of one stack applies to one of the sides 4, 5 of an element 1 of the other stack. We thus have great coherence at the level of the turn, by multiplying the contact zones, both in a horizontal direction and in a vertical direction.

In addition, it may be desired that this 90° cooperation in the longitudinal direction of the elements forms an assembly substantially as long as it is wide. In this context, it is advantageous for the elements, in their longitudinal direction, to have a dimension of less than 20% greater than their largest width dimension, for example the width dimension of the front face 2. For example, one can ensure that the length of an element 1 is less than or equal to the sum of the width of its front face 2 (corresponding to the width of the first wall 8) and twice the maximum thickness of the wall 8. Advantageously, the length of an element is equal to the sum of the width of its front face 2 and the thickness at its edge of the first wall 8.

In addition, it is possible to insert a textile tablecloth between each overlapping element. The role of the textile tablecloth is to reinforce cooperation and the maintenance of the elements together.

Furthermore, the elements 1, preferably which are the highest in the stack of elements 1, each have at least two passage holes. The two passage holes of each element 1 are aligned so as to allow the passage of a bar, preferably an iron bar. We can then easily lift each element 1 using the bar.

• largeur de la face avant : 1100 mm ;
• largeur de la face arrière : 900 mm ;
• épaisseur de la paroi 8 à ses extrémités latérales : 100 mm ;
• épaisseur de la paroi 8 à son milieu : 120 mm ;
• écartement entre la troisième paroi et la quatrième paroi : 200 mm ;
• épaisseur des parois 10,11: 140 mm ;
• rayon de courbure des congés de raccordement entre la troisième paroi 10 et la première paroi 8 et la deuxième paroi 9 : 50 mm ; un même rayon s'applique pour la quatrième paroi 11 avec les parois 8 et 9 ;
• arrondi d'au moins un bord des tranches verticales d'au moins une paroi 8, 9 : 10 mm.

THE Figures 4A to 4C show different views of the building element. It will be noted that the element is advantageously symmetrical along a plane directed in the height direction and the longitudinal direction. The following possible dimensions are indicated without limitation:

• front panel width: 1100 mm;
• rear face width: 900 mm;
• thickness of wall 8 at its lateral ends: 100 mm;
• thickness of wall 8 at its middle: 120 mm;
• spacing between the third wall and the fourth wall: 200 mm;
• wall thickness 10.11: 140 mm;
• radius of curvature of the connection fillets between the third wall 10 and the first wall 8 and the second wall 9: 50 mm; the same radius applies for the fourth wall 11 with walls 8 and 9;
• rounded off at least one edge of the vertical slices of at least one wall 8, 9: 10 mm.

These dimensions are understood to be within manufacturing tolerances and can be each separately or in combination reduced or increased by 10%. They remain indicative only.

List of references

1

Element

2

Front face

3

Back side

4

Second flank

5

First flank

6

Basic face

61

Groove

8

First wall

9

Second wall

91

Inclined internal face

10

Third wall

11

Fourth wall

12

Connecting edge

13

Linearly increasing thickness portion

14

Terminal portion

15

Other face

150

Flat background

151

First floor

152

Second floor

Claims (12)

1. A construction element (1) including:

   - a first wall (8) defining a front face (2) and a second wall (9) defining a rear face (3), the first and second walls (8, 9) being spaced apart in a longitudinal direction;

   - a third wall (10) and a fourth wall (11) respectively defining a first flank (5) and a second flank (4) that are spaced apart in a transverse direction, and each connecting the first and second walls (8, 9),

   and wherein first edge faces of each one of the first, second, third and fourth walls (8, 9, 10, 11) define a base face (6), and second edge faces of each one of the first, second, third and fourth walls (8, 9, 10, 11) define another face (15), opposite to the base face (6) in a height direction,

   characterised in that the second wall (9) defines a rear face (3) parallel to the front face (2) and includes a portion (13) whose thickness increases linearly in the direction of the base face (6) joining the third and fourth walls (10, 11) and forming an inclined internal face (91) of the second wall (9), on the opposite side from the rear face (3), in that the portion (13) whose thickness increases linearly is followed, opposite to the third and fourth walls (10, 11), by a terminal portion (14) of constant thickness and in that the terminal portion (14) extends beyond the upper end of the front face (2) at the other face (15).
2. The element (1) according to the preceding claim, wherein the base face (6) includes at least one groove (61) configured to authorise the insertion into the groove (61) of a terminal portion (14) of another element (1).
3. The element (1) according to the preceding claim, wherein the groove (61) is flared towards the base face (6) .
4. The element (1) according to one of the two preceding claims, comprising several grooves (61).
5. The element (1) according to any one of the preceding claims, wherein the portion (13) whose thickness increases linearly forms an angle greater than 20° with the rear face (3).
6. The element (1) according to any one of the preceding claims, wherein in the transverse direction, the dimension of the front face (2) is at least twice that of the rear face (3).
7. The element (1) according to any one of the preceding claims, wherein the other face (15) includes a flat bottom (150) defined by a portion of the second edge face of the third and fourth walls (10, 11), the flat bottom being connected, by a first side, to the inclined internal face (91) .
8. The element (1) according to the preceding claim, wherein the second wall (9) includes, in the transverse direction, a dimension less than or equal to the dimension of the flat bottom (150) in the longitudinal direction.
9. The element (1) according to one of the two preceding claims, wherein the flat bottom (150) is located at half the height dimension of the first wall (8).
10. A headwall composition assembly including a plurality of elements (1) according to one of the preceding claims.
11. The assembly according to the preceding claim, including at least a first element (1) and a second element (1) superimposed so that the longitudinal directions of the first and second elements (1) are perpendicular, the other face (15) of the first element (1) being in contact with the other face (15) of the second element (1).
12. The assembly according to the preceding claim, wherein the first element (1) and the second element (1) are according to one of claims 7 to 9, the flat bottom (150) of the first element (1) being in contact with the flat bottom (150) of the second element (1).

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