DE102010045093A1 - Drainage profile for drainage of flat and green roofs as well as flat usable areas - Google Patents

Abstract

Drainage profile (1) with an open underside (2) and a large number of transverse openings (3) in the area of the longitudinal sides of the drainage profile (1) for draining flat and green roofs, the drainage profile (1) each having two or more in the longitudinal direction of the drainage profile ( 1) comprises longitudinal channels (4) which are arranged parallel to one another and which are open at the bottom, and at least two of the longitudinal channels (4) lying directly next to one another each have a cross-section that tapers towards the top, so that the one between the two directly adjacent longitudinal channels (3) Area forms an upwardly open recess (5) serving to accommodate ballast, and at least the two outer longitudinal channels (4) located in the area of the longitudinal edges of the drainage profile (1) have a plurality of transverse openings (3) on the outside and one of several Drainage system built up on drainage profiles (1) and at least one coupling piece (10).

Description

The invention relates to drainage profiles with open bottom and a plurality of transverse openings in the region of the longitudinal sides of the drainage profile for drainage of flat and green roofs and a drainage system and its use for drainage of terraces and flat and green roofs.

The roofing of roofs is becoming increasingly important. Even flat areas, such as large parking areas, are planted at least in areas and require in the green areas and in the non-landscaped areas elements for regulating the introduced from above water, which is usually rainwater. The greening is based on a mostly multi-layer roof construction, which in addition to the greening planting substrate, also includes elements and devices for draining (drainage) of excess water.

The weather observations of recent years show that in Central Europe and also worldwide, the number of gushing downpours has increased significantly. Therefore, it is increasingly important for flat and green roofs that the rainwater is discharged quickly and as completely as possible. With prolonged water backlog, green roofs and roof waterproofing can be damaged. Since rooftops often have unevenness, often decides already during the installation of the drainage elements, whether the conditions for a quick and complete drainage are permanently met and remain. A subsequent correction or repair is costly because usually the various layers of the roof structure must be completely removed at the appropriate place.

The unevenness in the area to be drained can have various causes. They can be due to the different layers of the roof structure, which differ in their hardness, or by prolonged weather impact. But the bumps can also be unavoidable from the beginning, because in the installation of the roof seal existing structures and devices such. B. centrally positioned in the roof surface chimneys or antenna mounts, must be considered and the individual layers of the roof structure therefore, at least in the vicinity of these devices do not ideally come to rest on each other.

Disadvantageously, the restrictions and difficulties associated with the unevenness in the installation of the drainage elements lead to an increased work and time and on the other often to an incorrect installation. If the drainage elements are not installed correctly, for example, the bulk material intended for the roof greening structure can reach below the underside / lower edge of the drainage profile, even before it can be loaded with further bulk material from above over its entire length. As a result, undesirable flushing occurs. The bulk material can consist of sand and gravel or, as with green roofs, of a capillary fill which at the same time forms the plant substrate in which the plants are rooted.

In practice, it is often necessary that the elements belonging to a drainage system still have to be moved several times before they can be completely fixed by the bulk material surrounding them in the green roof construction.

Drainage profiles for dewatering flat and green roofs with an open underside are already known from the prior art. Due to the open bottom, the flow level of the water to be discharged agrees with all these drainage elements with the level of the surface to be drained.

document WO 89/03465 A1 discloses a drainage element whose cross-section corresponds to a U-profile (see 2 ). The profile is placed with the thighs down on the flat roof, so that the flow level of the water to be derived coincides with the level of the surface to be drained. The legs of the profile have openings in the lower area on the longitudinal side.

document EP 0 875 635 A2 discloses a smooth-surfaced polyurethane foam top layer having a plurality of bottom-side semicircular channels (see FIGS 14 ). The overlay layer is intended for the greening of pitched roofs.

document DE 199 55 753 A1 discloses a Wasserleitprofil each with a bottom open channel, which consists of a wall which bulges away from the surface to be drained and forms a cavity for discharging the surplus water on a flat roof due to their curvature. The cavity may have a triangular, trapezoidal, semicircular or semi-oval cross-section. The lateral surfaces of the arched wall have water permeable openings. Starting from the two lower edges of the arched away from the surface to be drained wall, the Wasserleitprofil two lateral, lying in the plane, bearing surfaces. The bearing surfaces are characterized in that they are adapted to the surface to be dewatered. When installing the profiles, the bulk material comes on the To lie on top of the bearing surfaces. Except for the lateral support surfaces disclosed DE 199 55 753 A1 no further measures to facilitate the installation of the Wasserleitprofils. If the Wasserleitprofil is postponed again after a first fixation by bulk material on the lateral bearing surfaces, the bulk material undesirably passes easily on the surrounding roof surface and thus disturbs the professional installation of other profiles.

However, in practice it often happens that after a first fixation, drainage profiles have to be shifted once or several times and rearranged before the installation of the generally comprehensive drainage profile drainage system can be completed by the support of the complete layer of bulk material , In the mounting situation, it can also easily unintentionally come to a shift of the pre-fixed profiles.

Against this background, the object of the present invention is to provide a drainage profile for rooftops, which is fast and easy to install even on uneven roof surfaces, the drainage profile with its underside, but especially with its outside longitudinal edges, before the application of the green roof construction belonging closed layer of bulk material, which also comes to rest next to the drainage elements on the surface to be drained, as close as possible to the roof surface. In this case, the drainage profile as a whole should also have improved mechanical strength and at the same time remain fully functional for the case of a longer installation time not to be excluded case of partial destruction of a profile section, with regard to the water drainage.

• – das Drainageprofil jeweils zwei oder mehrere in Längsrichtung des Drainageprofils parallel zueinander angeordnete untenseitig jeweils offene Längskanäle umfasst, wobei
• – jeweils mindestens zwei der direkt nebeneinander liegenden Längskanäle einen sich nach oben hin verjüngenden Querschnitt aufweisen, so dass
• – der zwischen den beiden direkt nebeneinander liegenden Längskanälen liegende Bereich eine nach oben offene, zur Aufnahme von Ballast dienende, Vertiefung bildet, und
• – zumindest die beiden im Bereich der Längskanten des Drainageprofils liegenden äußeren Längskanäle außenseitig eine Vielzahl von Queröffnungen aufweisen.

The task is solved drainage profile with an open bottom and with a plurality of transverse openings in the region of the longitudinal sides of the drainage profile for drainage of flat and green roofs, wherein

• - The drainage profile in each case two or more in the longitudinal direction of the drainage profile arranged parallel to each other below each open longitudinal channels comprises, wherein
• - Each have at least two of the directly adjacent longitudinal channels have a tapering upwards cross-section, so that
• - The area lying between the two directly adjacent longitudinal channels forms an upwardly open, serving to receive ballast, depression, and
• - At least the two lying in the region of the longitudinal edges of the drainage profile outer longitudinal channels on the outside have a plurality of transverse openings.

The longitudinal opening on the underside of the profiles causes the flow level of the water guided by the profile to be in the same plane as the area to be drained. Compared to a closed drainage profile, the best possible water drainage from the area to be drained is achieved through the open bottom.

At least the two outer longitudinal channels located in the region of the longitudinal edges of the drainage profile have a multiplicity of transverse openings on the outside. Through these transverse openings, the water to be discharged from the drainage profile on the left and right surrounding roof surfaces derived.

An upwardly tapered cross-section, for example, longitudinal channels with V-shaped, trapezoidal and semi-circular or semi-oval cross-section. In this case, semi-circular or semi-oval cross-sections, due to their increased compared to a V-shaped cross-section stability over a compressive load from above, are preferred.

Already with a dual-channel arrangement, i. H. already between two directly adjacent longitudinal channels, each tapering towards the top, d. H. smaller (narrower) becoming cross-section, forcibly forms a recess open at the top. This depression forms an upwardly open compartment for ballast (ballast compartment), wherein the longitudinal boundary of the compartment is formed by the opposite outer sides of the adjacent channels.

The recess serves as a ballast compartment for receiving bulk material or other ballast, the application of which facilitates the installation of the drainage profiles on an uneven surface.

The number of upwardly open recesses, on the upper side of a drainage profile, increases with each additional longitudinal channel, provided that this longitudinal channel also has an upwardly tapering cross section. Are z. B. in a drainage profile, which has a central dual channel and by the two channels forming the dual channel have an upwardly tapering cross-section, arranged on both sides each have a plurality of longitudinal channels with tetragonal cross-section, so not with each additional channel further depression added. Overall, next to the Central depression so only two more wells before.

For transverse boundary of the upwardly open recess transverse elements can be arranged in the drainage profile at the top between two adjacent longitudinal channels. The cross elements cause, in addition to the all-round compartmentalization of the recess open at the top, an additional stabilization of the drainage profile with respect to the load imposed by the roof greening structure.

The longitudinal channels are made of plastic or metal and are manufactured as extruded profiles. Preferred plastics are polyvinyl chloride, polyethylene and polypropylene.

In a preferred embodiment, it is provided that in each case directly juxtaposed longitudinal channels are spaced from each other in a parallel arrangement and are interconnected at the bottom by a central floor element. In this case, the longitudinal channels may have an upwardly tapering or a tetragonal cross section. The longitudinal channels with tetragonal cross-section, as well as the channels with a semicircular, U-shaped and V-shaped cross-section open downwards, so that the underside of the channels with the surface to be drained lies in one plane.

The size of the distance between the two longitudinal channels, z. B. in a dual-channel arrangement, is determined by the width of the central floor element. By spacing the longitudinal channels, it is possible that even with directly adjacent longitudinal channels with tetragonal cross-section, d. H. with rectangular or square cross-section and open bottom, between the two channels an upwardly open space is formed, which is bounded on the left and right by the two vertical outer walls of the adjacent channels and the bottom by the central bottom element. A depression delimited by two longitudinal channels, each with a tetragonal cross-section, itself likewise has a tetragonal cross-section. The distance between two adjacent longitudinal channels defined by the width of the central floor element also determines the volume of the depression between these longitudinal channels.

Of course, the described spacing of two adjacent longitudinal channels by means of a central bottom element is also possible with longitudinal channels which have a tapered cross-section at the top, z. B. a semicircular or V-shaped cross-section. Also in this case, increasing the distance between adjacent longitudinal channels increases the volume of the upwardly open cavity between these channels (see 1 to 4 ).

The drainage profile always comprises a plurality of longitudinal channels. The parallel arrangement of more than two longitudinal channels, the height of the longitudinal channels, and thus the height of the drainage profile as a whole, compared to a Wasserleitprofil with only one longitudinal channel can be reduced. Due to the overall lower profile height, the installation of the profile is advantageously possible even in a thinner layer of bulk material.

In a further preferred embodiment, it is provided that in the region of the longitudinal edges of the drainage profile, the two outer longitudinal channels have at least partially lateral bearing surfaces. The lateral bearing surfaces may alternatively extend over the entire profile length. The term "lateral support surface" in the sense of the invention refers to the above-mentioned support of ballast and is therefore to be understood in the sense of "lateral ballast support surface". It is clear that the lateral support surfaces serve with their underside at the same time as a stand areas. The connection point, or connecting line, between the lateral bearing surfaces and the longitudinal channels lies in the region of the outer lower edges or directly on the outer lower edges of the two outer longitudinal channels.

If no stiffening elements are arranged in the region of the connection point or connecting line, and the drainage profile consists of an elastically deformable material (eg a plastic), then the lateral bearing surfaces have an improved adaptability to unevenness. This is especially true when the lateral bearing surfaces consist of a plurality of respectively separate sections and do not extend in one piece over the entire profile length.

However, the drainage profile according to the invention does not necessarily require lateral support surfaces ( 2 B shows a drainage profile without lateral support surfaces). The upwardly open recesses between each adjacent longitudinal channels make the lateral bearing surfaces as surfaces for the ballast superfluous superfluous, provided that the wells have a sufficient for mounting fixation of the profiles ballast receiving volume. The central, ie each lying between adjacent longitudinal channels, ballast compartments are advantageous because the bulk material remains in the wells and thus completely on the profile even with a deliberate or unwanted displacement of the profile during the month. This advantage is offered by planar, ie, in the cross-section, rectilinear lateral bearing surfaces.

In a particularly preferred embodiment, the arranged in the region of the two longitudinal edges of the drainage profile lateral bearing surfaces have a substantially V-shaped or trapezoidal and U-shaped, ie tetragonal cross-section and are arranged so that the lateral support surfaces additional open to the top Inclusion of ballast, forming depressions. For example, the lateral bearing surfaces can each have an angled cross-section structure (see also description of 2c ). In this form, the lateral support surfaces, in addition to the central recess open to the top, serve as additional lateral depressions for ballast material, such. B. belonging to the green roof construction bulk material. If pressure is exerted on the drainage elements from above, the portions of the lateral bearing surfaces which are initially angled downwards are bent back upwards under the load of the bulk material serving as ballast until the bearing surfaces lie again in the plane of the surface to be drained.

The flexibility in the region of the connection point, or connecting line, which lies between the angled lateral bearing surfaces and the longitudinal channels in the region of the outer lower edge or directly on the outer lower edge of the two outer longitudinal channels, based on the material properties of the drainage profile or on the type of bend. If no stiffening elements are arranged in this area, the bendability is increased.

In a further preferred embodiment, the material forming the longitudinal channels at least in sections or over the entire profile length of a flexible, d. H. made of a flexible or elastically deformable material. Depending on the material thickness, plastics such as polyvinyl chloride, in particular polyethylene and polypropylene, meet these requirements. Alternatively, the material of the longitudinal channels is at least partially shaped and structured so that the drainage profile is flexible in itself. Due to the increased flexibility in the longitudinal direction and in the transverse direction is achieved that the drainage profile under the support of a ballast, such. B. the intended for green roofing bulk material, the bottom side as possible to the possibly existing unevenness of the surface to be drained adapts.

In a very particularly preferred embodiment, the material forming the longitudinal channels has a corrugated or corrugated structure which is already produced during the production of the drainage profile. By the corrugated structure, the flexibility of the drainage profile in the longitudinal direction and in the transverse direction and thus its adaptability to unevenness is increased. A shape of the corrugated structure corresponds to the structure of conventional circular drainage pipes, which are also referred to as "corrugated pipes" or "drainage pipes with wave profiling". The state of the art relating to the said "corrugated pipes" is a document DE 26 04 500 C3 again.

Under the condition of a ballast, such. As the intended for green roofing bulk material, which was introduced into the recesses mentioned above, the bottom of a drainage profile whose longitudinal channels have a corrugated structure, even better adapts to the level to be drained and their possibly existing unevenness.

• – die Längskanäle und
• – die mittigen Bodenelemente und
• – die seitlichen Auflageflächen,

bzw. das Material aus dem die aufgezählten Bestandteile bestehen, eine im Querschnitt gewellte oder gerippte Struktur auf. Die Wellenstruktur der wesentlichen Bestandteile des Drainageprofils verbessert dessen Anpassbarkeit an unebene Auflageflächen zusätzlich. Diese Ausführungsform erleichtert die Installation der Drainageprofile auf einer zu entwässernden Fläche besonders, weil sich die Biegsamkeit des Drainageprofils in sich, d. h. in Längsrichtung und gleichzeitig in Querrichtung, aufgrund der gewellten Struktur aller wesentlichen Profilbestandteile besonders stark erhöht. Aufgrund des gewellten oder gerippten Querschnitts auch in den seitlichen Auflageflächen bilden sich auf den Unterseiten der seitlichen Auflageflächen automatisch eine Vielzahl von Queröffnungen, bzw. Querkanälen, die sich bis zu dem zur jeweiligen Seitenfläche benachbarten Längskanal erstrecken und in diesen münden. Die Vielzahl dieser Queröffnungen führt zu einer besonders schnellen Ableitung des abzuführenden Wassers aus den seitlichen Bereichen.In a most preferred embodiment of the drainage profile, its essential components, ie

• - the longitudinal channels and
• - the central floor elements and
• - the lateral contact surfaces,

or the material of which the enumerated constituents consist, a corrugated in cross-section or ribbed structure. The wave structure of the essential components of the drainage profile additionally improves its adaptability to uneven bearing surfaces. This embodiment particularly facilitates the installation of the drainage profiles on a surface to be drained, because the flexibility of the drainage profile increases in itself, ie in the longitudinal direction and at the same time in the transverse direction, due to the wavy structure of all essential profile components particularly strong. Due to the corrugated or ribbed cross-section also in the lateral support surfaces, a plurality of transverse openings or transverse channels automatically form on the undersides of the lateral support surfaces, which extend up to the longitudinal channel adjacent to the respective side surface and open into them. The multiplicity of these transverse openings leads to a particularly rapid discharge of the water to be discharged from the lateral areas.

Due to the likewise corrugated or ribbed cross-section of the central floor element, a multiplicity of transverse openings or transverse channels automatically form on the underside of the lateral support surfaces, which extend in each case as far as the two longitudinal channels separated by the central floor element. The transverse channels on the underside of the central floor element have an important function in the event that one of the two longitudinal channels separated by a central floor element is damaged. In this case, the transverse channels on the underside of the central floor element divert the water to be discharged into an undamaged adjacent longitudinal channel. The plurality of transverse openings in the central floor element of a dual-channel arrangement leads to a particularly efficient diversion of the water to be discharged from one longitudinal channel into an adjacent longitudinal channel. Thus, several advantages are achieved by the corrugated material structure for the drainage pipe according to the invention and its use. A first important advantage is the increased mechanical strength combined with an improved elasticity of the drainage profile in the longitudinal and transverse directions. Another important advantage of the corrugated or ribbed material structure is that this structure inevitably provides at the same time a multiplicity of transverse channels on the underside of the lateral bearing surfaces and possibly also on the underside of the central floor element.

In a preferred embodiment, a material with damping properties is arranged on the underside of the central floor element in the case of a dual channel, or in the case of a drainage profile which in each case comprises two or more dual channels.

The material having damping properties may be a foamed material, a woven material or a nonwoven material. According to the intended use of the drainage profile, so-called geotextiles are particularly suitable because their suitability for this purpose has already been sufficiently demonstrated. This is especially true for so-called Geovliese. These fiber mats or filter fleeces usually consist of polyester fibers and polyester fibers. Wirrgelege, such. B. knitted mats made of rock wool or other durable material, can be used for the stated purpose. The extent of damping is determined not only by the material properties but also by the material thickness.

In a development of the aforementioned preferred embodiment, a material with damping properties is arranged on the undersides of the lateral support surfaces. In a further alternative of this preferred embodiment, a material with damping properties is arranged on the undersides of the lateral support surfaces and at the same time the underside of the central floor element, or in a drainage profile, each comprising two or more dual channels on the undersides of the central floor elements.

The alternatives mentioned are also conceivable for the case that both the lateral support surfaces and the central bottom element, or the central bottom elements, have a corrugated in cross-section, or ribbed structure for a lying under the lateral support surfaces of the drainage profile Geovlies allows the Retention of bulk solids and fine sand, without the water drainage is made difficult or limited by lying above the geotextile transverse openings. This also applies to the case that the areas mentioned are without structuring, ie. H. a structure that is rectilinear in cross-section, or have a smooth structure from the plan view, and that the geo-nonwoven has a greater material thickness.

The top layer of the roof covering usually consists of a PVC film or a bitumen film. The arrangement of an elastic material below the bottom of the drainage profile is particularly useful if the top layer of the roof covering consists of a PVC film.

If the geo-nonwoven extends over the entire area covered by the individual drainage profile, it is conceivable that the geotextile is already connected to it by gluing or heating during the production of the drainage profile.

In a particularly preferred embodiment of the drainage profile, the lateral bearing surfaces belonging to a dual-channel unit and the central floor element lie in different planes, ie. H. the central floor elements lies above the plane in which the two lateral bearing surfaces lie, so that a free space forms below the central floor element. In the space below the central floor element, a material with damping properties is arranged. In this case, the thickness of the material of the height difference of the two aforementioned levels correspond to or deviate from this.

In the event that the height of the material is greater than the height difference of the two aforementioned levels, the material has an elasticity that is so large that the material is compressed under the load of the bulk material to about the extent that the lateral bearing surfaces lie at the level of the area to be drained. However, the essential pressure does not rest on the lateral bearing surfaces, but on the elastic material. In this way, pressure points and damage to the roof structure can be avoided. The elastic material has an open-pore structure, so that the diversion of water from a damaged longitudinal channel into an intact longitudinal channel within a dual channel is not obstructed (see 2 B and 2c ).

In a further particular embodiment, the fixation of the drainage profiles with a double-sided adhesive tape is provided to facilitate the assembly. For this purpose, the undersides of the central floor elements and / or the undersides of the lateral bearing surfaces on a double-sided adhesive tape. If on the bottom of the central floor elements and / or on the underside of the lateral bearing surfaces of a material with is provided damping properties, the double-sided adhesive tape is arranged on the underside. The fixation of the individual drainage profiles during installation can be important because during the construction of the entire drainage system, and until the roof greening substrate is applied, small displacements of the individual elements can occur again and again. The fixation with double-sided adhesive tape is particularly successful if the top layer of the roof covering consists of a PVC film.

In principle, it is possible that the drainage profiles are each arranged to overlap to form a longer channel, without the connection being effected by connecting elements provided for this purpose. This applies both to profiles with a smooth cross-sectional structure and also to profiles with a corrugated or ribbed cross-sectional structure. In the case of a corrugated or ribbed cross section, a connection can thus be established between two elements arranged in an overlapping manner, the elevations and depressions of the two elements mutually engaging one another.

In a preferred embodiment, in order to additionally improve the bond strength between two overlapping drainage profiles, it is provided that the drainage profiles each have connecting elements arranged at a constant spacing in the region of the lateral longitudinal edges. The connecting elements consist of rod-shaped elements which protrude in a vertical direction upwards. The upwardly projecting rod-shaped connecting elements are located on the lower of the two profiles. In the overhead profile in the overlap region openings are provided, wherein the extent of the opening in each case corresponds to the cross section of the connecting elements, so that they can be guided through the opening upwards.

Due to the large number of connecting elements arranged at a short distance, it is ensured that at least one pair of connecting elements, which are each arranged in the area of the left and right lateral support surface, come to rest in the region of the transverse side, even if the profile is shortened in length. This is especially true if the length of the overlap region, at least equal to the distance between the connecting elements.

For the positioning of the connecting elements on the drainage profile different positions are conceivable. In a particularly preferred embodiment, it is provided that the rod-shaped connecting elements projecting upwards in the vertical direction are positioned in the region of the two side surfaces and / or in the region of the central bottom elements and / or in the marginal region of the two longitudinal channels arranged externally in the drainage profile.

Thus, the vertically upwardly projecting rod-shaped connecting elements may be arranged in a plurality of mutually parallel rows. In the case of a dual channel with a central bottom element, the connecting elements can be arranged, for example, in three mutually parallel rows, two of the rows lying in the region of the two side surfaces or in the outside marginal region of the longitudinal channels and a further third row being arranged in the region of the central bottom element.

A second aspect of the invention relates to a coupling piece for connecting a plurality of drainage profiles oriented in different directions. The coupling piece comprises two intersecting drainage profiles, wherein the longitudinal channels in the crossing region are open throughout, and the longitudinal channels have terminal end elements, wherein the end elements are individually removable. From the top view, the coupling piece can form a structure whose shape corresponds to a T, an L or a cross. The intended for the overlapping connection with other profiles sections of the coupling piece may also have the rod-shaped connecting elements described above.

A third aspect of the invention relates to a drainage system comprising a plurality of profiles in one of the previously described embodiments and at least one coupling of the type described above.

A final aspect of the invention relates to the use of one or more of the drainage profiles or a drainage system for drainage of terraces, flat and green roofs, or other flat utility areas, each having a border. Flat roofs in the context of the invention also include flat roofs with gravel or roof terraces covered with concrete slabs or composite bricks, as well as flat usable areas such as sports and riding areas and parking areas. The border of the roof or utility areas is provided to retain the water in the edge area.

EXAMPLES

Further developments, advantages and applications of the invention will become apparent from the following explanations of various embodiments and the drawings, which illustrate the invention by way of example without limiting this. All described and / or illustrated features are self-explanatory or in any combination, the subject matter of the invention, regardless of its combination in the claims or their dependency.

Show it:

1 Drainage profile in the embodiment of a dual channel in perspective view

2a Cross-section of a drainage profile in the embodiment of a dual channel with lying in the plane to be drained side surfaces

2 B Cross-section of a drainage profile in the embodiment of a dual channel without lateral contact surfaces

2c Cross section of a drainage profile in the embodiment of a dual channel with angled lateral bearing surfaces

3 Perspective view of a drainage profile in the embodiment of a dual channel with geovlies arranged on the bottom side

4 Perspective view of a coupling piece for connecting drainage profiles

1 shows a perspective view of a drainage profile 1 in the form of a dual channel consisting of two spaced-apart longitudinal channels 4 is formed. The two longitudinal channels 4 are connected along their longitudinal edges by a central floor element 6 that the longitudinal channels 4 spaced at the same time. In the in 1 The example shown is the outer edge of each of the longitudinal channels 4 over the entire length of the drainage profile 1 with a lateral support surface 7 connected. The lateral support surface 7 points, as well as the longitudinal channels 3 and the central floor element 6 , a corrugated in cross-section, or ribbed, structure. Due to the corrugated, or transversely ribbed shape formation, the profile receives a plurality of transverse openings 3 on its underside 2 as well as an improved mechanical strength and an elastic support surface, which adapts better to bumps on the surface to be drained.

The water to be drained from the surface to be drained passes through the lateral transverse openings 3 in one of the two longitudinal channels 4 , Since the transverse openings are also below the central floor element 6 Continuing damage to a longitudinal channel will not result in the loss of the water supply function of the entire drainage profile 1 ,

The connecting elements 9 are for connecting two, in the region of their transverse sides, overlapping arranged drainage profiles 1 intended. The connection between the overlapping arranged profiles is made by the fact that openings are attached to the overhead profile whose surface is dimensioned slightly larger than the cross section of the connecting elements 9 , Because the fasteners 9 are arranged at a regular distance along the two longitudinal edges, it is possible that tailored to an individual length profile sections can be easily and safely connected to each other.

Between the two longitudinal channels 4 An indentation that opens upwards forms 5 , The depression 5 It serves to absorb ballast, leaving the drainage profile 1 is pressed by the support of ballast in the compartment formed by the recess already during its mounting surface on the level to be drained. Due to the flat support of the drainage element 1 , It is advantageously achieved that the applied in the lateral area at a later time bulk material, eg. B. belonging to the roof greening plant substrate, can not get between the top of the surface to be drained and the bottom of the drainage profile.

2a shows that in 1 explained drainage profile 1 in cross section. The two lateral contact surfaces 7 are in a horizontal position. Thus, the bottom are 2 of the drainage profile 1 passing through the undersides of the lateral bearing surfaces 7 as well as through the underside of the central floor element 6 is formed, in a plane. This level coincides with the level of the area to be drained.

2 B shows in cross section a drainage profile 1 that has no lateral support surfaces 7 having. Instead, strips of a geotextile, in particular a geo-fleece, are arranged along the two outer edges. The geo-fleece covers the lateral transverse openings 3 in the longitudinal channels 4 open and extend to the area to be drained.

Due to the cover of the transverse openings 3 through the geo-fleece 8th is achieved that constituents of the bulk material, such. B. fine sand, do not get into the longitudinal channels and thus can be permanently washed away.

In the in 2 B The example shown is the central floor element 6 arranged above the level to be drained. In the space between the top of the surface to be drained, which with the bottom 2 of the drainage profile 1 coincides, is a material with elastic properties 8th arranged. The material has a dampening effect, so it does not cause injury to the roof through the underside of the central floor element 6 can come.

For the material with damping properties 8th it can be a Geovlies of appropriate strength or a foam. Both materials allow the flow of water. For the material with damping properties 8th it may also be an elastically deformable material, for. B. a rubber-like material, the bottom side also has transverse openings, act.

The porous structure of geotextile 8th also causes a filtering of the in the longitudinal channels 4 inflowing water. This is especially true if the Geovlies also on the underside of the two lateral bearing surfaces 7 is arranged.

2c shows in cross section a drainage profile 1 , whose lateral bearing surfaces 7 are angled downwards. Below the central floor element 6 is a material with damping properties 8th arranged. For the material with damping properties 8th For example, it can be a geo-fleece.

Also in the in 2c The example shown is the central floor element 6 arranged above the level to be drained. In the space between the top of the surface to be drained, which with the bottom 2 of the drainage profile 1 coincides, is a material with damping properties 8th arranged. The material has a dampening effect, so it does not cause injury to the roof through the underside of the central floor element 6 can come.

For the material with damping properties 8th it can be a Geovlies of appropriate strength or a foam. Both materials allow the flow of water. For the material with damping properties 8th it may also be an elastically deformable material, for. B. a rubber-like material, the bottom side also has transverse openings, act.

A dampening effect goes into the 2c shown example of the angled structure of the lateral support surface 7 out. Under the one in the well 5 introduced bulk material outgoing load lowers the drainage profile. On the one hand, this is the elastic material 8th compressed and on the other hand, the angled side bearing surfaces 7 up, ie bent into the horizontal. The bottom rounding in the area of the angulation of the lateral support surfaces 7 prevents the lowering of the roof membrane during this lowering movement. The bendability of the lateral bearing surfaces 7 can be influenced by the fact that in each case the number of stiffening elements in the transition region between the lateral bearing surface 7 and outside of the longitudinal channel 4 is varied. The bendability is greatest when the connecting line between the lateral support surface 7 and longitudinal channel 4 in the longitudinal direction of the drainage profile 1 has no stiffening elements.

Due to the angled structure of the lateral bearing surfaces arise on the top of the lateral bearing surfaces 7 , next to the central ballast compartment 5 , two additional, smaller ballast compartments 5 , The filling of these additional compartments 5 with bulk material before mounting prevents the drainage profiles during installation 1 undesirably bulk material in the longitudinal channels 4 arrives.

3 shows a perspective view of a drainage profile 1 , in the structure and in the transverse structure of its essential components (lateral bearing surfaces 7 , Longitudinal channels 4 as well as central floor element 6 the in 1 and 2a correspond to profiles shown.

This in 3 shown drainage profile 1 is characterized by the fact that under the entire of the drainage profile 1 covered area a geo-fleece 8th is arranged. The geo-fleece 8th prevents on the one hand the injury of the roof skin and causes on the other hand that through the lateral transverse openings 3 less sand or smaller stones in the longitudinal channels 4 reach and be washed away. This retention effect can be very beneficial for the long term nature of the green roof construction.

4 shows a coupling piece 10 consisting of two intersecting sections of a drainage profile 1 in the dual-channel arrangement (see 1 ) is constructed. In the edge area of the four of the intersecting longitudinal channels 4 formed end portions are each two connecting elements 9 arranged. With the help of these fasteners 9 become the drainage profiles 1 connected by openings are cut in the respective to be connected to the coupling piece drainage profile, wherein the size of the openings is dimensioned slightly larger than the cross section of the connecting elements 8th , As a result, an overlapping arrangement of the drainage profiles with the coupling piece positioned below is possible.

To cover open, belonging to the coupling piece longitudinal channels 4 , are attachable cover elements that are in 4 are not shown provided.

LIST OF REFERENCE NUMBERS

1

drainage profile

2

Bottom of the drainage profile

3

transverse openings

4

longitudinal channels

5

Recess between directly adjacent channels on top of the drainage profile (ballast compartment)

6

central floor element

7

lateral contact surfaces

8th

Material with damping properties / Geovlies

9

fasteners

10

coupling

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• WO 89/03465 A1 [0008]
• EP 0875635 A2 [0009]
• DE 19955753 A1 [0010, 0010]
• DE 2604500 C3 [0032]

Claims (16)

Drainage profile ( 1 ) with open bottom ( 2 ) and a plurality of transverse openings ( 3 ) in the region of the longitudinal sides of the drainage profile ( 1 ) for drainage of flat and green roofs, characterized in that - the drainage profile ( 1 ) two or more in the longitudinal direction of the drainage profile ( 1 ) parallel to each other on the underside open longitudinal channels ( 4 ), wherein - in each case at least two of the directly adjacent longitudinal channels ( 4 ) have an upwardly tapered cross section, so that - between the two directly adjacent longitudinal channels ( 3 ) an upwardly open, for receiving ballast serving recess ( 5 ), and - at least the two in the region of the longitudinal edges of the drainage profile ( 1 ) lying outer longitudinal channels ( 4 ) on the outside a plurality of transverse openings ( 3 ) exhibit. Drainage profile ( 1 ) according to claim 1, characterized in that in each case at least two of the directly adjacent longitudinal channels ( 4 ) have a - upwardly tapering cross section, or - have a tetragonal cross section, and the longitudinal channels ( 4 ) - spaced apart, and - at the bottom by a central bottom element ( 6 ) are connected to each other so that the between the two directly adjacent longitudinal channels ( 4 ) an upwardly open, for receiving ballast serving recess ( 5 ) and the depression ( 5 ), depending on the width of the central floor element ( 6 ), has a variable volume. Drainage profile ( 1 ) according to one of claims 1 and 2, characterized in that the two in the region of the longitudinal edges of the drainage profile ( 1 ) lying outer longitudinal channels ( 4 ) either - at least in sections, or - over the entire length of the drainage profile ( 1 ) extending lateral support surfaces ( 7 ) exhibit. Drainage profile ( 1 ) according to claim 3, characterized in that the two in the region of the longitudinal edges of the drainage profile ( 1 ) arranged lateral bearing surfaces ( 7 ) - have a substantially V-shaped or U-shaped cross section, and - are arranged so that the lateral bearing surfaces ( 7 ) additional upwardly open recesses ( 5 ) form. Drainage profile ( 1 ) according to one of the preceding claims, characterized in that the longitudinal channels ( 4 ) forming material - at least in sections, or - over the entire length of the drainage profile ( 1 ) consists of a flexible material. Drainage profile according to one of the preceding claims, characterized in that the longitudinal channels ( 4 ) forming material has at least in sections a ribbed in cross-section or corrugated structure. Drainage profile according to claim 6, characterized in that j - the longitudinal channels ( 4 ), and - that the central floor elements ( 6 ), and - that the lateral bearing surfaces ( 7 ) forming material have a ribbed or corrugated in cross-section structure, wherein in the region of the lateral bearing surfaces ( 7 ) formed due to the corrugated or ribbed structure bottom side transverse openings ( 3 ) each up to the respective lateral support surface ( 7 ) adjacent longitudinal channel ( 3 ). Drainage profile ( 1 ) according to one of the preceding claims, characterized in that on the underside of the central floor elements ( 6 ) and / or on the underside of the lateral support surfaces ( 7 ) a material with damping properties ( 8th ) is arranged. Drainage profile ( 1 ) according to one of the preceding claims, characterized in that at least one of the central floor elements ( 6 ) in the drainage profile in a plane above the lateral bearing surfaces ( 7 ) and thus positioned above the level to be drained. Drainage profile ( 1 ) according to one of the preceding claims, characterized in that the underside - of the central floor elements ( 6 ) and / or the undersides of the lateral bearing surfaces ( 7 ), or - if on the underside of the central floor elements ( 6 ) and / or on the underside of the lateral support surfaces ( 7 ) a material with damping properties ( 8th ), the underside of the material with damping properties ( 8th ) is connected to one of the two sides of a double-sided adhesive tape. Drainage profile ( 1 ) according to one of the preceding claims, characterized in that the drainage profile ( 1 ) for producing a detachable connection between two drainage profiles ( 1 ) in the vertical direction a plurality of upwardly projecting rod-shaped connecting elements ( 9 ) having. Drainage profile ( 1 ) according to claim 11, characterized in that in the vertical direction upwardly projecting rod-shaped connecting elements ( 9 ) - in the area of the two side surfaces ( 7 ), and / or - in the region of the central floor elements ( 6 ) and / or - in the marginal area of the two in the drainage profile ( 1 ) arranged on the outside longitudinal channels ( 4 ) are arranged. Drainage profile ( 1 ) according to any one of claims 11 and 12, characterized in that in the vertical direction upwardly projecting rod-shaped connecting elements ( 9 ) are arranged in two or more mutually parallel rows, wherein the connecting elements ( 9 ) within each row have a regular distance from each other. Coupling piece ( 10 ) for merging two or more drainage profiles ( 1 ) according to one of claims 1 to 13, wherein the coupling piece ( 10 ) of two intersecting and interconnected sections of a drainage profile ( 1 ) according to one of claims 1 to 13, and wherein - the longitudinal channels ( 4 ) are continuously open in the crossing area, and - the longitudinal channels ( 4 ) terminally each have individually removable termination elements. Drainage system comprising a plurality of drainage profiles ( 1 ) according to one of claims 1 to 13 and one or more coupling pieces according to claim 14. Use of one or more of the drainage profiles ( 1 ) according to one of claims 1 to 13 or a drainage system according to claim 15 for the drainage of terraces and of flat and green roofs.

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