FR2716217A1 - Gutter and immobilisable gutter element. - Google Patents

Abstract

The gutter is made in sections, each with a base (17) and two vertical walls (3, 4), each covered by a metal layer (9, 9') at the top which provides protection for the edges and/or a support for a covering grille (2). The concrete reinforcement is provided by metal elements (42) which are fixed to the upper layers (9, 9') by dowels (34) and fixing screws (13) which pass through and retain the grille, and/or other elements which are welded to opposite sides of a top metal layer. The reinforcing elements are U-shaped and made to correspond to the shape of the concrete gutter section. For certain uses, eg. inside buildings, the metal layers and grille can be coated with a plastic (PVDF), making them easier to clean with a jet of water.

Description

CANIVEAU AND IMMOBILIZABLE CANNEL ELEMENT.

  The present invention relates to a reinforced concrete channel consisting of channel elements laid longitudinally one after the other, each channel element having a reinforced concrete channel element and, optionally, a metal grid including cast. The invention also relates to a reinforced concrete channel element for making such a gutter.

  French patent application 89 09456 discloses a gutter element as mentioned above, which element, together with a plurality of other identical elements, can be aligned longitudinally to form a gutter.

  The type of gutter element described in this patent application has the advantage of being able to be used without requiring the casting of a concrete bed on the place where it is desired to install a gutter, because the clean reinforcement of this channel is such that it produces the stability required for this type of installation by itself.

  Since these gutter elements can be installed in natural ground that could yield to crushing forces when heavy vehicles pass over or near gutters, this may result in an undesired displacement of one or more elements. The purpose of the present invention is therefore to provide a simple means by which such trends can be eliminated.

  To achieve this purpose, a gutter according to the invention is characterized in that the set of channel elements comprises a means for biasing each channel member longitudinally against its adjacent gutter element (s).

  According to an advantageous embodiment, each gutter element has longitudinal openings that allow a wire rod or cable to be threaded axially through all the aligned reservations of the set of gutter elements.

  This metal rod (this cable) can be threaded (e) so as to allow to screw two nuts on it (him) in opposite directions from its two ends after being threaded through all the longitudinal reservations of the set of gutter elements, for compressing or biasing these channel elements against each other when tightening the nuts.

  Alternatively, one can also consider the use of a fixed lock on one end of the cable or rod and a single nut on the other end.

  According to another embodiment of the invention, each gutter element may comprise a clamping means cooperating with the clamping means of a neighboring gutter element, this type of biasing means being able to be present alone or in combination with the metal rods.

  In the embodiment comprising a clamping means on each channel element, this clamping means may be a truck-type lock, and according to another embodiment, the clamping means takes the form of a bracket which cooperates with another angle, arranged laterally of the front and rear faces of a channel element.

  According to another embodiment of a clamping means disposed on each element, this clamping means may consist of two rings, each of which is arranged near the longitudinal end of a channel element so as to make it possible to clamp two elements. neighbors against each other by means of a removable clamping tool. This embodiment is particularly advantageous because the clamping tool can be used only to maintain a pre-tightening during the application of the metal rods, and then the clamping tools can be recovered and only the two rings that are partially immersed in the reinforced concrete will remain on site.

  A gutter as described above consists of a plurality of reinforced concrete gutter elements, which are aligned and optionally covered by a metal or plastic grid, and according to the invention these gutter elements are characterized in that they each comprise at least two longitudinal reservations through the reinforced concrete portion along its entire length.

  The grid has slots which are substantially perpendicular to the longitudinal dimension of the channel member and these slots may be bent so that the curve is in the plane of the grid.

  Between each group of two adjacent slots, the grid comprises a bar which has on its upper surface at least one deflector element which promotes the flow of a liquid passing through the grid in said slots.

  A channel element according to the invention may comprise a channel element having two vertical walls and a horizontal bottom, each of the vertical walls being covered at its upper end with a metal section intended to receive the two lateral edges of the grid. This grid can be fixed on the channel element by several screws which enter the vertical walls of said channel element through the metal profiles.

  Each metal section may comprise a plurality of threaded bushings which are arranged below a portion of the profile which carries the edge of the grid and at a corresponding level with holes in the grid which are intended for the passage of the screws.

  According to a particular form of the invention, each bushing is extended downwards by a lug intended to be welded to a reinforcing iron of the channel element.

  In a particularly advantageous form of the invention, the metal profiles may comprise partially cut and folded parts towards the inside of the profile, said parts serving as attachment points by welding between the profiles and the reinforcing elements of the channel element.

  According to another embodiment of the present invention, each channel element comprises on its front face, a profiled protrusion which corresponds to a recess of the rear face so as to allow interlocking between the front and rear faces of the two elements of neighboring canal.

  According to a preferred embodiment of the invention, the front and rear faces of the channel members comprise at least two axial holes which are intended to receive studs for the perfect alignment of the channel elements by insertion of said studs at a time. in each of the holes aligned two by two on the front and rear faces of the two adjacent gutter elements.

  According to another embodiment of the present invention, the inner faces of the vertical walls and the bottom of the channel member are covered with a waterproof polymer sheet. This waterproof sheet may also be resistant to corrosion.

  Advantageously, this sheet extends beyond the inner faces of the vertical walls and extends along the entire interface between the upper end of the vertical wall of reinforced concrete and between the metal section.

  On each side of the channel member, a side edge of the waterproof sheet may exit at the interface between the concrete and the metal section to allow this side edge to be connected with another watertight sheet disposed laterally with respect to the gutter. .

  This waterproof sheet may be preformed by thermoforming before being put in place to adhere to the inside of the channel element, such preforming of the waterproof sheet can considerably facilitate the production of a channel element. The metal profiles are advantageously made of galvanized steel, optionally coated with a PVDF-type polymer of a tinted varnish, or by any other metallic or synthetic material.

  The invention will now be described in more detail with reference to the drawings in which: Figure la shows a channel element according to the invention before assembly, Figure lb shows the same channel element in assembled state, Figure 2 shows Figure 3 shows a perspective view from below of a metal profile of a gutter according to the invention, Figure 4 is a cross-section of the element of a gutter according to the invention. gutter, the right portion of which corresponds to a section passing through a plane perpendicular to the level of the bolts illustrated in FIG. 1a, and the left part of which is a section on an intermediate plane. FIGS. 5a and 5b show details of two embodiments FIG. 6 shows a partial perspective of the interface between two channel elements according to the invention further comprising a watertight coating on the inside. FIG. 7a shows a step of a process for the formation of said watertight coating; FIG. 7b shows another step of the formation of said watertight coating, and FIG. 7c shows the watertight coating as a semi-rigid body emerging from a mold.

  Turning now to Figure la, there is a channel element 1 having a bottom 17 and two side and vertical walls 3 and 4 which extend on either side of the bottom 17 upwards.

  The upper ends of these vertical walls 3 and 4 are each covered with a metal section 9, 9 'whose main faces form a shoulder which is intended to receive the longitudinal edges of a grid plate 2 so that the upper surface of said gate plate 2 is at the highest portions 9a of the profiles 9 and 9 '.

  The grid plate 2 comprises along these lateral edges a number of notches 14 which are provided with holes 15 allowing the passage of the screws 13. On the lower bearing surface 9c of the metal sections 9, 9 'are several holes 10 in vertical alignment with the holes 15 of the grid plate 2 to allow to engage the screws 13 through the holes 15 in the holes 10.

  As will be described in more detail in the description of FIG. 4, the metal sections 9 and 9 'comprise, below the surface 9c and at the level of the holes 10, threaded bushings inside, thus making it possible to fix the grid plate 2 on the metal sections 9 and 9 'by tightening the screws 13 in said sockets. The number of screws 13 and holes 10 in the longitudinal direction of the gutter will be determined so as to obtain the desired strength of the gutter.

  The gate plate 2 further comprises a plurality of slots 12 which extend substantially perpendicular to the longitudinal direction of said plate 2, slots which may have, as indicated in Figures 1a and 1b, a curved shape so that that the curvature remains in the plane of the upper surface of the plate 2.

  Each group of two slots 12 is separated by a bar 19 and this bar can carry on its upper surface deflector elements 16 which are light projections and which may have extensions in the longitudinal direction of the grid plate 2 so that they cover essentially the entire width of the bars 19.

  The purpose of the curved shape of the slots 12 is the enlargement of the probability that water threads that pass through said grate plate will be, after the final installation of the channel element 18, at ground level. - To fall into the slots 12 instead of crossing the grid plate 2 at the bars 19. Since the curved shape of the slots 12 does not represent an absolute guarantee that no water passes through the plate 2 without to fall into any slot, said bars 19 comprise the projections 16 to direct a water thread that would engage to pass the plate on the back of said bars 19 to be deviated to the left or right to surely fall into one of the slots 12 .

  The channel element 1 comprises a front and rear surface substantially corresponding to cuts perpendicular to the longitudinal direction of the channel element, and these sections comprise profiled formations 6 and 11, so as to form an interlocking element during the longitudinal assembly of several channel elements as illustrated in FIGS. 1a and 1b. The front and rear faces that have just been described comprise axial holes 7 and 7 'of limited axial extension, holes which allow the insertion of the studs 7a and 7a' so as to obtain an exact alignment of the frontal surface. 5 of an element with the rear surface of another adjacent element after the insertion of the lugs 7a and 7a 'in the four holes, two and two of which are each aligned longitudinally.

  At the front surface there are also openings 8 and 8 'which define longitudinal reservations which completely cross the channel elements in the longitudinal direction and it is easily understood that a channel which is constituted by a certain number of elements of gutter as illustrated in Figures la and lb comprises, after alignment, two reservations, which extend over the entire length of the gutter.

  FIG. 1b shows a channel element 18 identical to that of FIG. 1a but in a closed state, that is to say, the grid plate 2 has been fixed on the upper ends of the walls 3 and 4 which are covered with metal sections 9 and 9 ', by tightening the screws 13 as mentioned above.

  The heads of the screws 13 are then in the notches 14 so that the channel member has at its upper surface no protrusion that substantially exceeds the level of the upper surface of the grid plate 2 or the upper shoulders of the metal sections 9 and 9 '. The baffles 16, they exceed this surface slightly as described above, this being however a desired effect for the reasons mentioned above.

  Figure 2 shows a step of an assembly of several channel elements la to longitudinally one behind the other, to form a gutter.

  As described above, the set of channel elements comprises aligned longitudinal reservations starting from the openings 8 and 8 'of the first channel element la, the alignment of these reservations being obtained by the profiled portions of the front and rear faces of the gutter elements as well as by the studs 7a and 7a '.

  Each channel member 1a comprises a truck door latch type having near the end of one element a stop or hook means 20c ', and on the other end of the element of gutter, a closing loop 20d so as to clamp the two channel elements against each other after engagement of the loop 20c in the hook 20c 'followed by the pivoting of the loop 20c in the opposite direction to the hook 20c .

  These clamping means can be used as the sole means of permanently maintaining the alignment of the set of channel elements in situations where the required force of mutual urging between the channel elements is not very high.

  In situations where a high pressurization of each channel element against its neighbor (s) is required, longitudinal reservations are used to thread metal rods or cables 21 and 21 'into the openings 8 and 8'. so that the two metal rods 21 and 21 'extend through all aligned channel members out of the front face of the first member and also from the rear face of the last member.

  Then, and as is shown in more detail in FIG. 6, nuts 60, 60 'are passed over the two strands of the rods 21 and 21' coming out of the front face of the first channel element as well as identical nuts 60a on the strands of the rods 21, 21 'protruding from the rear surface of the last channel member and applying a longitudinal stress force by tightening the nuts 60, 60a in the contra-direction against the front and rear surfaces of the first and last channel element respectively.

  It is easily understood that the tightening of the nuts 60, 60a results in the creation of a longitudinal stress force considerably greater than that produced by the closure of the lock which is arranged at each interface between two adjacent gutter elements.

  It is obviously also possible to use as the biasing means only the rods 21 and 21 'with their nuts without the application of the locks 20a, 20b and so on. which only make it possible to maintain a pre-alignment to facilitate the insertion of the rods 21 and 21 'into the longitudinal bores, which locks however do not constitute an essential element in an embodiment where the clamping is used by the rods 21 and 21 '.

  However, as already mentioned above, the use of locks 20a, 20b and so on. can be considered alone and without the additional support of the metal rods 21 and 21 'where the biasing force by said locks is sufficient for the type of gutter that is to be manufactured.

  FIG. 3 shows a perspective view of the metal profile which rests on the upper end of the vertical and lateral walls of the channel element 1, and this metal profile 9 has two horizontal surfaces, an upper surface 36 and a lower surface 37 which are separated by a shoulder 38, the surface 37 and the shoulder 38 being intended to come into contact with the lateral edges of the gate plate 2 as illustrated for example in FIG. 4.

  Flaps 30 and 31 extend downwardly from opposite ends of the horizontal portions 36 and 37 to protect the upper end portions of the inner and outer surfaces of the vertical walls as is readily apparent in FIG. 4.

  The horizontal portion 37 has at its bottom a plurality of sockets 34, only one of which is shown in FIG.

  The bushing 34 which extends downwards from a hole 10 (FIG. 1a) is internally threaded and is closed at its lower part by a full pin 35 which will serve as a welding support to make a joint the sleeve 34 (together with the screws 13 - Figure 1 - it will receive) with a metal frame member 42 (Figure 4).

  It has been found advantageous to use the lug 35 as a support for this welding rather than the socket 34 itself, since thermal deformations of the socket 34 could occur during welding, thus compromising the complete engagement of the screws 13 bottom of the socket to reliably tighten the grid plate 2 against the horizontal portion 37 of the profile 9.

  According to its longitudinal extension of the profile 9, a plurality of bushings 34 is arranged below the holes 10 to serve as a receptacle for the screws 13 which are distributed along the length of the gate plate 2.

  The flaps 30 and 31 also comprise, over the longitudinal extension of the profile 9, a number of partially cut and folded portions 32 and 33 inwardly of the profile 9, parts 32 and 33 which will serve as indicated in the part FIG. 4 is a support for making a mechanical connection by welding between the section 9 and the reinforcing bars 40 and 41 which pass through the arch-shaped channel element 1 in a manner similar to the bar 42 which is is welded on the pin 35.

  FIG. 4, the right part of which shows a cross-section at the level of the screws 13, while the left part shows a section at the cut portions 32 and 33 of the flaps 30, 31 of the profile 9, clearly indicates that the gutter element comprises a metal encirclement consisting of the bar 42, the lug 35, the sockets 34, screws 13 and the plate 2 at the same intervals that are found the screws 13 in the grid plates, while it comprises a second and third partial encirclement formed by the bars 40 and 41 which are welded to the metal profile.

  Alternatively, it is also possible to create punching anchoring elements of a portion 32a which represents a rectangle cut along three of its four sides, and folded inwards. The element 32a is completely inside the flaps 30 and 31 and has no intersection with the free edge 32b of this flap.

  The welding of the metal section 9 on the bars 40 and 41 is independent of the placement in the longitudinal direction of the screws 13, and the number of bars 40, 41 which are distributed over a certain length of the channel element is independent of the number of The triple fastening of the metal section 9, 9 'to the inner reinforcement of the channel element 1 guarantees perfect seating and support between the metal section and the concrete upper end of the channel. vertical walls 3 and 4 so as to ensure maximum retention of the entire between the grid plate 2 and the vertical walls 3 and 4.

  FIG. 5a shows an example of execution of the lock located between two adjacent gutter elements as already mentioned in the description of FIG. 2, this lock comprising on the end side of a first gutter element 1b. , a hook 50 and, attached to the opposite end of a neighboring gutter member a loop 52 which is pivotally attached to this gutter member neighbor la by means of two rings 54.

  The loop 52 can be pivoted around its portion which is held by the rings 54, and the two longitudinal branches of the loop 52 comprise holes 53 allowing the passage of a second loop 51 which engages on the other hand in the hooks 50.

  Figure 5b shows another embodiment of the clamping means. Two brackets 77 are affixed in the opposite direction to the lateral ends of two channel elements 1a and 1b in such a way as to be able to cooperate by screwing a bolt 57 which will pass through the holes 59 made in the two perpendicular portions 56 of the brackets.

  The portions 55 are preferably welded to inner frame members of the channel members 1a and 1b through the portions that penetrate the concrete.

  The clamping means according to Figures 5a and 5b, as already mentioned, can be used to maintain the channel elements in their mutual position, but also and most importantly, they can be used to obtain a perfect approximation of two elements after their coarse application.

  It can easily be understood that these elements, which have a considerable weight, arise first either by a crane or manually using a carrier means approximately aligned, and then one proceeds to perfect alignment and tight using the clamping means described above.

  FIG. 6 shows the interface between two opposing ends of the two adjacent channel members 1a and 1b which are held in their relative position by a closed lock as described in more detail with reference to FIG. 5, after aligning them previously by the interlocking of their profiled parts 6 and 11.

  For reasons of clarity, the grid plates 2a and 2b have been designated without details of their slot and bar structures, the longitudinal lateral edges of these plates represent on the lower horizontal portions of the metal sections 9a, 9b and 9a ', 9b .

  Metal rods (cables) 21, 21 'have been passed through the longitudinal reservations described in more detail with reference to the preceding figures, and nuts 60, 60', 60a are designated before their engagement on the rods 21, 21 '. .

  The channel elements 1a and 1b have on their inner surface a watertight coating 61 which covers all of the inner surfaces of the bottom and the vertical walls of said channel element, this watertight coating 61 further extending on each side 62, between the upper part of the vertical wall and between the metal section 9a, 9a 'so as to emerge 63 outwards below the side flaps 31 as illustrated in FIG.

  The coating 61 adheres perfectly against the inner surfaces of the concrete portions 64 that constitute the bottom and the vertical walls of the channel member and makes this channel member tight. ic

  Such an arrangement of a waterproof and optionally corrosion-resistant coating may be provided for special applications of a gutter which should lead to liquids which could have an adverse effect on the concrete.

  At the level of the interface between two channel elements 1a and 1b, a rupture of this sealed coating is evidently obtained, which rupture can be sealed by creating a weld bead with the same material as that of the coating 61.

  Such welding is obviously done before the closure of the channel by all the grids 2a, 2b, etc. welding plates which may be preceded by the deposition of a wire in the slot which is created between the two coatings 61 of adjacent gutter elements, metal wire that can be used later for checking the quality of welding by seeking an electrical breakdown between the wire and a control probe that is passed manually along said weld.

  The portions 63 of the watertight coating exiting laterally from the vertical walls of the channel member 1a or 1b can be used to make a watertight connection with another waterproofing coating or a waterproofing layer which will be or which has been previously deposited on or in the ground neighbor in order to obtain a complete watertightness of the soil surface in a certain place.

  An axial stress between the various channel elements is particularly advantageous for the elements carrying sealed layers sealed between the elements, to ensure their relative immobility.

  FIGS. 7a, 7b and 7c show several stages in the formation of the impervious covering 61 of FIG. 6, and it is understood that this coating 61 consists of a semirigid structure of a polymer or other material that is on the market in sheet or plate form.

  FIG. 7a shows the two parts 70 and 71 of a pressing mold between which the original sheet 72, which has a positive and a negative form of the inner form of a channel element and the shape 73, is placed, 74 of the metal section mentioned above.

  The mold portion 71 has a shoulder 76 and the portion 70 of the mold a shoulder 75 serving together as scissors to cut the edges of the sheet 72 during complete closure of the mold, as illustrated in Figure 7b where the lateral strands 72a are distinguished constituting the cut side edges of the sheet 72 '.

  To obtain a permanent preform of the sheet 72 ', the two parts of the mold 71 and 70 are heated by integrated heating means not shown, as is known in the art of thermoforming.

  During the separation of the two parts of the mold 70 and 71, the semirigid molding-type waterproofing is obtained, which can be used as such for the production of a channel element according to FIG. 6.

  The production of such a channel element can be carried out by first depositing the metal sections 9a, 9a 'at the bottom of a concrete casting mold, after which the sealing sheet 72' of FIG. in the mold so as to engage its corresponding parts in the metal profiles. As illustrated in FIG. 3, the inner surfaces of these metal profiles comprise portions 32, 33, 34 and 35 which must pass through the sealed sheet 72 'so as to be connected by welding to a metal reinforcement which will also be deposited in the mold, and after piercing these portions 32 through 35 through the sealing sheet 72 ', the various welding steps described with respect to FIG. 4 above are performed and the mold is then filled with concrete.

  The demolding produces a channel element 1 as illustrated in FIG. 1a, which channel element will be closed by a gate plate 2 at the desired time.

  The metal sections 9 may be made of steel, possibly galvanized and the grid plates 2 are advantageously made of cast iron.

  For certain applications, especially inside the buildings, a coating of the metal profiles 9 as well as the grid plate 2 made of PVDF or the like could be envisaged in order to give the gutter an upwardly exposed surface which is smoother and whose microstructure allows easy cleaning possibly by the application of a simple stream of water.

  A PVDF or other coating may be provided in any color that will be related to the interior of the building in which the gutter was made.

  An example of a method of applying a coating according to the invention will be described in the following: A length of galvanized steel profile according to Figure 3 is first treated with acid to obtain a stall. Then the profile is rinsed twice with tap water and a third time with demineralized water, and dried and degassed at 200-210 C.

  An anticorrosive treatment will follow the drying and then the profile is passed through a polymerizable powder application booth or capable of forming a temperature-tight coating of the profile, which will be located for example for a polyester powder between 210 and 220 ° C. A new drying / degassing treatment at 200-210 ° C will finish the process.

  The present invention has been described in the foregoing according to certain exemplary embodiments, while being understood that the scope of the invention is not limited to these described embodiments, since many modifications could be made without departing from the spirit of the invention.

Claims (23)

  1. Reinforced concrete channel (22) consisting of channel elements (18) laid longitudinally one after the other, each channel element having a reinforced concrete channel element (1) and, optionally, a grid (2) made of metal, in particular of cast iron, characterized in that the set of channel elements comprises means for biasing each channel member longitudinally against its adjacent channel element (s).   2. channel according to claim 1, characterized in that each channel element (18) has axial holes (8, 8 ') for threading a metal rod (21, 21') axially through all the axially aligned holes of the set of channel elements (18).   3. channel according to claim 2, characterized in that the metal rod (21, 21 ') is a threaded rod, and in that it allows to screw two nuts (60, 60a) on it in the opposite direction from its two ends after being threaded through all the axial holes (8, 8 ') of the plurality of channel members (18) so as to compress or bias these channel elements against each other during the tightening the nuts.   4. channel according to any one of the preceding claims, characterized in that each channel element (ld) further comprises a clamping means (20c, 20d) cooperating with the clamping means (20c, 20d ') of a gutter element (lc, the) neighbor.   5. Gutter according to claim 4, characterized in that the clamping means is a latch type truck door.   6. channel according to claim 4, characterized in that the clamping means consists of two rings each arranged near the longitudinal end of the channel element (18) so as to clamp two adjacent elements against each other the other by means of a removable clamping tool.   7. Channel element (18) of reinforced concrete (1), covered by a metal grid (2), intended to manufacture a gutter (22) according to any one of the preceding claims, characterized in that it comprises at least two longitudinal holes through the reinforced concrete part along its entire length.   8. Element according to claim 7, characterized in that the grid (2) has slots (12) substantially perpendicular to the longitudinal dimension of the channel element (18).   9. Element according to claim 8, characterized in that the slots (12) have a curved shape, the curve being in the plane of the grid (2).   10. Element according to claim 9, characterized in that the gate (2) comprises between two slots (12) adjacent a bar (19) carrying on its upper surface at least one deflector element (16) promoting the flow of a liquid passing through the grid (2) in the slots (12).   11. Element according to any one of claims 7 to 10, characterized in that the channel element (1) comprises two vertical walls (3, 4) and a horizontal bottom (17), each of the vertical walls being covered with its upper end of a metal section (9, 9 ') for receiving the two side edges of the grid (2).   12. Element according to any one of claims 7 to 10, characterized in that the grid (2) is fixed on the channel element (1) by several screws, entering into vertical walls (3, 4) of said element channel, through the metal profiles (9, 9 ').   13. Element according to claim 12, characterized in that each profile comprises a plurality of threaded sleeves (34) arranged below a portion (37) of the profile carrying the edge of the grid (2) and at a corresponding level with holes (15) in the grid (2) which are intended for the passage of the screws (13).   14. Element according to claim 13, characterized in that each sleeve (34) is extended downwardly by a lug (35) intended to be welded to a reinforcing iron (42) of the channel element (1). .   15. Element according to any one of claims 7 to 14, characterized in that the profiles (9, 9 ') comprise partially cut portions (32, 33) folded towards the inside of the profile, said parts serving as a point d joining by welding between the profiles (9, 9 ') and reinforcing elements (40, 41) of the channel element (1).   16. Element according to any one of claims 7 to 15, characterized in that the front face of the channel element (1) comprises a profiled protrusion (6) corresponding to a recess (11) of the rear face of the channel element (1).   17. Element according to any one of claims 7 to 16, characterized in that the front and rear faces of the channel member comprise at least two axial holes (7, 7 ') for receiving lugs (7a, 7a). ') serving to perfectly align the channel members (18) by inserting said lugs (7a, 7a') into both of the holes aligned in pairs on the front and rear faces of two adjacent gutter members.   Gutter element according to one of Claims 7 to 17, characterized in that the inner faces of the vertical walls (3, 4) and the bottom (17) of the channel element (1) are covered with a waterproof sheet (61) of polymer.   19. Element according to claim 18, characterized in that the waterproof sheet is resistant to corrosion.   20. Element according to claim 18 or 19, characterized in that the sheet extends beyond the inner faces of the vertical walls (3, 4) and extends along the entire interface between the upper end of the vertical wall (3, 4) of reinforced concrete and between the metal section (9, 9 ').   21. Element according to claim 20, characterized in that the sheet has a side edge which leaves on each side of the channel element at the interface between the concrete and the metal section (9, 9 ').   22. Element according to any one of claims 7 to 21, characterized in that the metal sections (9, 9 ') are made of steel, optionally galvanized or covered with a PVDF-type polymer.   23. Element according to any one of claims 18 to 22, characterized in that the waterproof sheet (61) is preformed by thermoforming before being put in place to adhere inside the channel element (1) .