Building protection gutter arrangement, and building protection gutter

Abstract

Protective gutter arrangement, • with a building protection gutter (1), ◯ which is designed to run alongside a foundation (3) of a building (2) in use, ◯ and has a wall (19) facing the building (2) in use, ◯ a floor (20), ◯ a wall (21) facing away from the building (2) when in use, ◯ a top cover (10), ◯ Wall openings (12) through which water can flow into the building protection channel (1) during use, ◯ and a drainage opening from which water can flow out of the building protection gutter (1) during use, • and with a drainage shaft, ◯ which is in such a flow connection with the drain opening of the building protection channel (1) that water can flow from the drain opening into the drainage shaft during use, ◯ and which is designed to drain the water that has entered the drainage shaft to a water collection point during use.

Description

[0001] The invention relates to a building protection gutter arrangement and a building protection gutter.

[0002] It is known from practice that so-called pressurised water, which can occur, for example, as a result of heavy rainfall, can be kept away from a building by installing a protective gutter outside the foundation or a basement. The protective gutter serves to collect water that flows towards the building as surface water during heavy rainfall, for example, or which rises within the ground during persistent rainfall when the ground becomes saturated with water and the water level in the ground rises. The protective gutter either runs along the building, for example when the water is only flowing towards the building from one particular side, or it preferably runs in a ring around the building so that when the water level in the ground rises, the pressurised water all around the building can flow into the protective gutter.

[0003] The known protective gutters can either be composed of individual gutter sections, for example, box sections each with a roughly U-shaped cross-section, or they can be designed as drainage pipes with openings, or they can be designed as a trench, for example, in the form of a gravel-filled gutter whose water capacity corresponds only to the volume of the interstices between the individual pebbles. A drainage pipe in such a trench increases its capacity. Without the protective gutter, the water would reach right up to the building, which could cause basements, for example, to become damp.

[0004] While it is well known that in older buildings the entrance door can be reached after climbing one or two steps, or even a higher entrance staircase, in modern buildings the entrance doors are often not provided with a ramp in front of them to enable barrier-free access for aesthetic reasons, cost reasons and / or to create barrier-free access, but rather the building is planned so low that the threshold of the entrance door is level with the immediately adjacent ground level. Time and again, buildings are also planned so low that the threshold of the entrance door is even lower than the ground level of neighboring properties. This type of construction is particularly common in buildings without basements, as there is no basement that protrudes a few centimeters above ground level and the entrance door is therefore not located any distance above ground level.Surface water can therefore flow into the building through floor-to-ceiling windows, exterior doors or similar openings.

[0005] The invention is based on the object of providing a protective gutter arrangement suitable for reliably protecting buildings without basements, and in particular buildings where the lower edge of floor-to-ceiling windows and exterior doors is at or below the surrounding ground level, from water pressure. Furthermore, the invention is based on the object of providing a building protection gutter suitable for this purpose.

[0006] Features of the invention are defined in claims 1 and 13. Further embodiments are the subject of the dependent claims.

[0007] In other words, the invention proposes a protective gutter arrangement comprising a building protection gutter and a drainage shaft. The building protection gutter has two opposing walls, one facing the building and the other facing away from the building, as well as a base, an upper cover, and wall openings through which the water can flow into the building protection gutter, so that the water is collected in the building protection gutter and does not accumulate as pressurized water at the basement or foundation of the house, or even at a floor-to-ceiling window or an exterior door of the building. According to the invention, the building protection gutter is provided with a drain opening so that the water in the building protection gutter can flow to the drain opening. According to the invention, the drain opening connects to the drainage shaft, so that the water flows from the building protection gutter through its drain opening into the drainage shaft.The drainage shaft, in turn, is designed to drain the water contained therein to a water collection point. The water collection point could be, for example, a sewer line, an infiltration well, or a natural body of water. If the water collection point is located at a lower level than the drainage shaft, drainage occurs automatically, and the water flows from the drainage shaft to the water collection point under the influence of gravity. Because the building protection channel not only serves as a collecting basin or buffer tank to collect water, but also directs the water to the drainage shaft, which then drains away water, the building is reliably protected from water pressure.

[0008] In one embodiment, the cover of the building protection channel is designed to be permeable to water. This allows both rainwater and surface water on the surface of the terrain surrounding the building to flow directly into the building protection channel without the surface water first having to penetrate the ground and then enter the building protection channel through the wall openings. This provides effective protection against surface water flowing into a floor-to-ceiling window or external door if the corresponding threshold of the building opening is at the same level as or lower than the surrounding ground level. For example, the cover can be designed in the form of a grating, a perforated sheet, or the like. The cover is permeable to water at least in some areas, but advantageously along its entire length or as much of its length as possible.

[0009] Since the building protection channel, and thus also the cover, may be located in front of a floor-to-ceiling window or an exterior door of the building, pedestrian traffic crossing the building protection channel is to be expected. Accidentally falling small items such as keys, coins, cards, or the like may fall through the water-permeable cover into the building protection channel. To prevent this, the cover can be designed to be permeable to water only in certain areas and, in front of such building openings, can be designed to be impermeable to water, for example, with a gradient that directs the water that has reached the cover to the areas of the cover that are permeable to water.Alternatively, beneath a load-bearing cover such as a grating capable of supporting the expected weight, a lower cover with a significantly smaller mesh size can be arranged, such as a net, a geotextile, a fine-mesh grid, or the like, so that this lower cover retains the small objects but is also permeable to water. Alternatively, the cover can have particularly small openings in front of the building openings, e.g., in the form of a close-meshed grid or a perforated sheet with small hole diameters, so that the cover retains falling objects at these points but is permeable to water.

[0010] The building protection channel is designed to be laid horizontally and without a slope. The drain opening is located either deep in a wall or in the floor of the building protection channel, allowing water to automatically flow out of the building protection channel and through its drain opening. This slope-free arrangement of the building protection channel has the advantage that the top edge of the building protection channel is flush with the surrounding ground, allowing, for example, a cover to be flush with the surrounding ground along the entire length of the building protection channel without requiring special leveling, as is the case with a sloped, sloped building protection channel.In a different design, however, the building protection channel is laid in such a way that it has a gradient leading to the drain, thus ensuring particularly reliably that water that has entered the building protection channel flows to the drain opening and thus subsequently to the drainage shaft.

[0011] In addition to the hydrostatic drainage effect of the drainage shaft mentioned above, forced drainage can be provided. In one embodiment, a feed pump is therefore arranged in the drainage shaft, which is designed to pump the water out of the drainage shaft during use. The feed pump can also be used, for example, to overcome differences in elevation by first directing the water upwards and only then to the water collection point. For example, the water can be pumped over a dike into a body of water behind the dike or into a flood zone, or it can be pumped into a water collection point that is hydrostatically higher than the drainage shaft or its feed pump.The use of a feed pump can also improve drainage performance by removing a larger volume of water per unit of time from the drainage shaft than would be possible due to hydrostatic conditions alone. Designing the pump shaft can therefore significantly improve the effectiveness of the protective channel arrangement and, in particular, the protection for the building in question. The pump can be configured to be automatically switched on and off according to the water level in the drainage shaft, for example, using a float switch.

[0012] The water flows through the wall openings from the side into the building protection channel. In one embodiment, the wall openings are arranged at a distance above the floor of the building protection channel, in such a way that a so-called flow zone of the building protection channel is created below the wall openings. This flow zone does not primarily serve to allow water to flow into the building protection channel, but rather to allow the water already collected in the building protection channel to flow to the drain opening. The distance of the wall openings to the floor and thus the height of the flow zone can therefore advantageously be not just a few millimeters, but rather several centimeters, such as 15 cm, so that water that enters the building protection channel does not flow out again through the wall openings, but rather remains within the building protection channel and flows to its drain opening.In the event that drainage via the drainage shaft cannot be achieved to the desired extent, the flow area within the building protection channel also represents a buffer storage that can absorb water that does not communicate with the wall openings and therefore can no longer escape from the building protection channel into the surrounding ground and thus to the building.

[0013] In principle, it can be provided that wall openings in both opposite walls allow the water to flow equally into the building protection channel. In one embodiment, however, the building protection channel is designed such that the opening area formed by all the wall openings in a wall is larger in the wall facing the building than in the wall facing away from the building. In this embodiment, the invention is based on the consideration that the water level on both sides of the building protection channel, i.e. on both the side facing the building and the side facing away from the building, will basically be the same according to the principle of communicating pipes, but that due to the flow resistance in the ground, such level adjustment will require a certain amount of time.Allowing water to flow into the building protection channel from the outside, i.e., from the side facing away from the building, would, as expected, require a considerable amount of drainage due to the large amount of water present there. Allowing water to flow into the building protection channel only from the inside, i.e., from the side closest to the building, would, in comparison, require considerably less drainage effort, as the volume between the building protection channel and the building's foundation or basement—and accordingly the volume of water contained therein—is very limited. As expected, water in the ground will only gradually penetrate this volume, so that with a correspondingly low pumping capacity, the ground around the building, specifically in the volume immediately adjacent to the building, can be kept as dry as possible.The considerably larger volume of water located in the practically unlimited soil volume away from the building, outside the building protection channel, does not, as expected, need to be completely pumped out, because other drainage mechanisms are in place there and the water level there will gradually drop after a major rainfall event.

[0014] In a further development of this latter design, in which the opening area formed by all wall openings in a wall is larger in the wall facing the building than in the wall facing away from the building, the wall of the building protection channel facing away from the building is free of wall openings so that no ground water can flow into the building protection channel from the “outside”.

[0015] In one embodiment, the building protection channel has a secondary channel which is arranged in the area of ​​a floor-to-ceiling window or an external door of the building, extends in the door or window recess to the base of this floor-to-ceiling window or external door, and which is provided with a water-permeable cover at the top. The secondary channel increases the effective width of the building protection channel for collecting surface water where the building protection channel would otherwise run at a distance in front of the base of the door or window due to the door or window recess. The secondary channel is flow-effectively connected to the building protection channel in such a way that, during use, water flows from the secondary channel into the building protection channel. Compared to the building protection channel, the secondary channel serves as a comparatively shallow basin primarily for collecting surface water and directing it into the building protection channel.The installation of the secondary gutter on the building protection gutter can be carried out in a particularly simple manner because no additional connecting openings to the secondary gutter need to be created in the building protection gutter, but rather the secondary gutter can direct the water through the already existing wall openings into the building protection gutter.

[0016] The secondary channel primarily serves to collect surface water, which then flows from above through the water-permeable cover into the secondary channel. In one embodiment, however, the secondary channel also has wall openings like the building protection channel. For example, it can have wall openings in the wall facing away from the building and towards the building protection channel, so that the water from the secondary channel can flow through its wall openings as well as through the wall openings of the building protection channel into the building protection channel, and an additional flow channel is not required to connect the secondary channel to the building protection channel for drainage. In another embodiment, the secondary channel has wall openings in the wall facing the building, so that the secondary channel can not only collect surface water from above through the cover, but also water accumulated in the ground from the side and channel it away from the building.In yet another embodiment, the secondary channel has wall openings in both the wall facing away from the building and the wall facing towards the building.

[0017] Since the length of the secondary channel is limited to the door or window recess anyway, and the water is to be directed transversely from the secondary channel into the building protection channel along a short path, not lengthwise, the secondary channel does not need to have a flow area. The wall openings of the secondary channel can therefore extend all the way down to the floor or be distributed across the entire height of the respective wall in order to absorb and / or discharge as much water as possible per unit of time for high hydraulic performance.

[0018] Particularly in buildings where the thresholds of floor-to-ceiling windows and exterior doors are at the same level as the surrounding ground or even lower, as is often the case in buildings without basements, the secondary gutter can reliably protect the floor-to-ceiling window or exterior door from surface water penetration, as the water-permeable cover can extend right up to the building opening. The secondary gutter does not have to be the same height as the building protection gutter, but can, as mentioned, be designed as a relatively shallow basin and primarily serves to increase the water-absorbing surface of the building protection gutter, namely its effective width, in front of the building opening.

[0019] In a further development of the secondary gutter, this is designed in such a way that it can be adapted to the specific conditions of the building by being adjustable in terms of its width and / or length and can therefore be adapted to the door or window recess in order to fill it as completely as possible. The length is the dimension of the secondary gutter in the longitudinal direction of the adjacent building protection gutter. The width is the dimension in which the secondary gutter extends from the building protection gutter to the base of the building opening. This width depends, for example, on how far the building wall extends in front of the floor-to-ceiling window or door, for example on the facade materials used and on the thickness of any existing insulation layer or an air gap between a load-bearing wall and an external wall cladding.If the width of the secondary gutter is adjustable, it can advantageously be set so that the secondary gutter extends from the building protection gutter to the base of the building opening.

[0020] The width adjustability of the secondary channel is made possible in one design by creating the U-shaped cross-section of the secondary channel using two separate elements, each of which is L-shaped and aligned so that the lower, horizontal sections of the L-shaped cross-sections overlap. The degree of overlap determines the width of the secondary channel created in this way. The length of the secondary channel can be adjusted in a similar way by allowing two sections of the secondary channel to overlap to different extents in the longitudinal direction. However, for reasons of structural simplification, ease of handling on site and for cost-effective reasons, it can be provided that only the width of the secondary channel is adjustable and that the length of the secondary channel is easily adapted to the conditions specified on site by cutting the secondary channel to the appropriate length on site.

[0021] The building protection channel protects buildings with deep foundations without basements from temporarily accumulating seepage water. Particularly during periods of heavy rainfall, but also under unfavorable topographical conditions – e.g., in buildings without basements combined with poorly permeable soils – moisture problems often arise due to the underestimated water impact. If rainwater does not infiltrate the subsoil quickly enough, it temporarily accumulates at the ground level. The options available in such cases to reduce water impact, such as completely lowering the surrounding terrain, retrofitting drainage ditches, or custom-built drainage ditches, have proven effective in practice. However, these measures, which are retrofitted to existing buildings, are associated with considerable effort.In contrast, the effort required when using the building protection channel according to the invention is significantly lower.

[0022] A building protection channel is – simply put – an oversized facade channel that can be installed without a slope. Unlike standard facade channels, however, it not only protects the facade but, similar to drainage ditches, protects the entire building from excessive water ingress. The building protection channel can be made of ceramic, metal, composite material, or plastic, such as polyethylene. Unlike conventional drainage ditches, it does not require separate concrete angle support elements. Its installation is therefore significantly simpler and more cost-effective.

[0023] Even if the main area of ​​application of the building protection channel according to the invention concerns existing buildings with too deep foundations, the building protection channel can also be used in new buildings, for example if these cannot be founded higher.

[0024] The building protection channel according to the invention, in one embodiment, has an overall width of approximately 40 cm or slightly less and an overall height of approximately 45 cm or slightly more, including the cover, which is permeable to water and can be made of metal, e.g., a grating made of galvanized steel, or of plastic. The building protection channel is particularly suitable for floor structures up to 20 cm high. The building protection channel can be provided as a kit, so that the individual elements can be assembled to suit the local conditions encountered on site. The standard scope of delivery can include, for example, in addition to the individual channel sections including covers for the building protection channel, length fitting pieces, external and internal corners, and drain bodies including dirt traps, as well as the aforementioned secondary channels and their covers.

[0025] The secondary gutter, which is installed in the area of ​​a door or window recess that is set back from the facade, can be 15 cm high, for example. It can be designed in two different versions: a one-piece version, which can be described as the standard version, has a fixed width that is suitable for many common door and window recesses, filling them completely or at least largely, and which can be, for example, 12 cm. A two-piece version, which can be described as a special version, is adjustable in width. Both versions of the secondary gutter are attached to the side of the building protection gutter. The drainage of the secondary gutter also takes place via the building protection gutter.

[0026] The building protection channel according to the invention, and if applicable, the secondary channel, are designed to prevent water from accumulating on the façade side or on the side of the doors and floor-to-ceiling windows. For this purpose, the façade-side walls are provided with wall openings that serve as drainage openings, allowing the accumulated water to flow into the building protection channel or the secondary channel.

[0027] To ensure that there is a flow path for the water between the building on the one hand and the building protection channel or the secondary channel on the other, in one embodiment a spacer is arranged on the building protection channel and / or on the secondary channel, specifically on the wall facing the building. The spacer can, for example, be designed as an integral part of the respective channel, for example as a bevel, e.g. by not removing the material from the wall facing the building, which is removed from the wall surface to create the wall openings, but is bordered, for example, by a V-, U-, or C-shaped punching line, so that a material web remains which continues to connect a material tongue bordered by the punching line to the wall surface. The material tongue can be bent outwards along this web and form the spacer to the wall of the building.

[0028] In another embodiment, the spacer is formed by a separate element that is arranged on the outside of the relevant wall of the building protection gutter or the secondary gutter. This can, for example, be inexpensive leftover pieces of material that are glued or screwed to the outside of the building protection gutter wall, such as blocks, ribs, rings made from short pipe sections, or the like. The aforementioned screws themselves can also serve as spacers by being screwed into the wall of the building protection gutter or the secondary gutter from the outside.

[0029] In another embodiment, the spacer is formed by a three-dimensional geotextile. This enables quick, large-area, uncomplicated, and thus advantageous installation of the spacer on the wall of the building protection channel or the secondary channel. Compared to multiple point-shaped or linear spacers, the flat design of the spacer in the form of a geotextile also provides effective protection against particles being washed into the space between the respective channel and the building, so that the desired flow path between the building on the one hand and the building protection channel or the secondary channel on the other hand can be kept particularly reliably clear for water to flow through.The three-dimensional design of the geotextile ensures that the geotextile is not only permeable to water across its surface, but also allows water to flow within the surface formed by the geotextile. For example, the geotextile can have a spacer fabric or be designed as a random fiber fabric in a wave shape, e.g., by arranging random fibers on a wave-shaped carrier, which can be designed, for example, in the form of a grid.

[0030] In one embodiment, the geotextile is already attached to the building protection channel or the secondary channel when the respective channel is delivered to the construction site. For example, the channel can be fitted with the geotextile at its manufacturer's factory. In one embodiment, the geotextile is available as a separate item and can be cut to the desired size on site, for example, to create recesses where a secondary channel is to be installed on the building protection channel. In this embodiment, the geotextile represents an additional component of the aforementioned kit and can be included in the standard scope of delivery.

[0031] Apart from the protective gutter arrangement, the invention further relates to a building protection gutter by means of which a building can be protected from accumulating water. The building protection gutter has a first wall which, during use, can be oriented towards a building, a base, a second wall which, during use, can be oriented away from the building, an upper cover, and a drain opening through which water can flow out of the building protection gutter during use. Furthermore, the building protection gutter has wall openings through which water can flow into the building protection gutter during use. The wall openings are arranged at a distance above the base of the building protection gutter in such a way that a flow area of ​​the building protection gutter is created below the wall openings. Finally, the opening area created by the wall openings is larger in the first wall which can be oriented towards the building than in the second wall.Such a building protection channel can form a component of a protection channel arrangement according to the invention as described above.

[0032] In one design of the building protection channel, the second wall is free of wall openings.

[0033] In one design of the building protection channel, the cover of the building protection channel is designed to be permeable to water.

[0034] In one embodiment of the building protection channel, it has a secondary channel which is provided with a water-permeable cover, wherein the secondary channel is flow-effectively connected to the building protection channel in such a way that, during use, water flows from the secondary channel into the building protection channel.

[0035] In one embodiment, the secondary channel is adjustable in terms of its width and / or length.

[0036] In one embodiment, the secondary channel also has a first wall which, in use, can be aligned towards a building, a bottom, a second wall which, in use, can be aligned away from the building, and wall openings through which water can flow into the secondary channel during use.

[0037] In one embodiment, a spacer is arranged on the building protection channel and / or on the secondary channel in front of the wall openings in such a way that a flow path is created for the water from the outside to the wall openings and into the building protection channel.

[0038] In a further embodiment of this building protection channel described above, the spacer is designed as a three-dimensional geotextile.

[0039] Further features, details, and advantages of the invention will become apparent from the wording of the claims and from the following description of exemplary embodiments based on the purely schematic drawings. They show: Fig. 1 as a section of an embodiment of a protective gutter arrangement, a schematic cross section through a building protection gutter and a part of a building, and Fig. 2 a view similar Fig. 1, wherein in this embodiment of a protective gutter arrangement the building protective gutter runs in front of a door or window niche and is provided with a secondary gutter.

[0040] Fig. 1 shows a section of a protective gutter arrangement in which a building protection gutter 1 runs outside a building 2, which is only partially indicated, and borders the facade of the building 2. The building 2 has no basement and has a strip foundation 3 and a floor slab 4, with a floor covering 5 located at a distance above the floor slab 4 inside the building 2, e.g. on a substructure not shown for reasons of clarity, which may contain, for example, a screed, underfloor heating and a thermal insulation layer.

[0041] A ground surface running outside the building 2 can be designed as a covering in the form of paving, asphalting, or the like, or as a lawn, a flowerbed, or the like. This ground surface is slightly lower than the surface of the ground covering 5 inside the building 2 and forms a permissible surface water level 6, up to which water can be dammed outside the building 2 without causing damage to or inside the building 2. A moisture barrier layer 8 is arranged between the strip foundation 3 and a building wall 7, as well as on the outside of this building wall 7. Furthermore, thermal insulation 9 is provided on the outside of the building 2, both in front of the building wall 7 and partly at the level of the floor slab 4.

[0042] The building protection channel 1 has a first wall 19 facing away from the building 2, a base 20 and a second wall 21 facing the building 2. The building protection channel 1 essentially borders on the building 2 and extends upwards to the height of the ground surface, i.e. to the surface water level 6. The building protection channel 1 has a U-shaped cross-section and is covered at the top with a water-permeable cover 10 in the form of a grating, so that the surface water, which is on the ground surface above the surface water level 6, flows into the building protection channel 1 before it can reach the building 2.Between the building protection channel 1 and the building 2, a geotextile 11 is indicated by a dashed line. This geotextile is designed as a three-dimensional geotextile, so that it creates a flow channel in which water can not only pass through the geotextile 11 transversely to its surface, but can also flow within the surface. The geotextile 11 conceals wall openings 12, which are arranged in the wall of the building protection channel 1 facing the building 2 and are shown in the drawing as interruptions in this wall. The wall openings 12 are located at a distance above the bottom of the building protection channel 1, so that below the lowest wall openings 12, a flow area 14 is created, the height of which is indicated by a double arrow and in which the water flows within the building protection channel 1 to a drain opening not shown in the drawing.

[0043] In addition to the section shown, the protective channel arrangement further comprises a drainage shaft (not shown in the drawing), which is in flow communication with the drain opening such that water can flow from the drain opening into the drainage shaft. The drainage shaft drains the water to a water collection point, for example, into a sewer, a stream, a lake, a flood zone behind a dike, or the like. Drainage is preferably carried out by means of a pump, so that the water can also be pumped upwards from the drainage shaft, either to overcome an obstacle such as the aforementioned dike, or to pump the water to a geodetically higher water collection point.

[0044] In the illustrated embodiment, the wall openings 12 are arranged exclusively in the wall of the building protection channel 1 facing the building 2, so that no water can flow into the building protection channel 1 from the outside facing away from the building 2. Rather, water can only flow into the building protection channel 1 through the wall openings 12 and from above through the cover 11 and, directly at the building 2, through the geotextile 11 from above and then through the wall openings, as indicated in the drawing by three arrows.

[0045] Fig. 2 shows a section of a second embodiment of a protective gutter arrangement, wherein comparable elements are marked with the same reference numerals as in Fig. 1. Building 2 is depicted in the area of ​​a window niche, so that instead of building wall 7, a window base 15 of a floor-to-ceiling window 16 and a window frame 17 are shown. An additional seal 13 is arranged between the window base 15 and the window frame 17 of the floor-to-ceiling window 16.

[0046] The building protection channel 1 is opposite Fig.1 remains unchanged. In the area of ​​the window recess, it runs at a distance from building 2, namely at a distance from the window base 15, so that in this area of ​​the window recess, the building protection channel 1 is supplemented by a secondary channel 18. Except for its dimensions and one significant difference, which will be explained in more detail below, the secondary channel 18 is fundamentally similar in design to the building protection channel 1, so that for reasons of clarity, the individual features of the secondary channel 18 are not provided with reference symbols that correspond to the reference symbols of the building protection channel 1. Like the building protection channel 1, the secondary channel 18 also has a U-shaped cross-section, with a wall 19 facing away from the building 2, a base 20, and a wall 21 facing the building 2, although it is smaller in size than the building protection channel 1.It also has a water-permeable cover 10 at the top, and it has wall openings 12 towards the building 2, which are covered with a geotextile 11, which is located between the secondary gutter 18 and the window base 15.

[0047] In contrast to the building protection channel 1, however, the secondary channel 18 has wall openings 12 in both of its walls, i.e. also in the wall facing away from the building 2. In this way, water that enters the secondary channel 18 can flow from the secondary channel 18 into the building protection channel 1 and reach its drain opening. A further, but not essential, difference is that in the illustrated embodiment, the secondary channel 18 does not have a flow area 14, so that water can flow along the entire length of the secondary channel 18 through its wall openings in the wall 19 facing away from the building 2 into the building protection channel 1. As an alternative, however, the secondary channel 18 can also have a flow area 14 in order to allow the water to flow to a defined outlet.

[0048] Three arrows indicate that water can flow into the protective channel arrangement from above through the covers 10 of the building protection channel 1 and also of the secondary channel 18, and that water located in the ground can flow into the protective channel arrangement through the wall openings 12 of the building protection channel 1. Since the secondary channel 18 primarily serves to collect surface water, for reasons of clarity, such arrows are not shown; they would serve to clarify that water can also flow from above through the geotextile 11, which is located between the secondary channel 18 and the building 2, as well as from below into this geotextile 11 and can enter the secondary channel 18 through its wall openings 12, which are located in the wall 21 of the secondary channel 18 facing the building 2.

[0049] All features and advantages arising from the claims, the description and the drawing, including design details, spatial arrangements and method steps, can be essential to the invention both individually and in a wide variety of combinations, e.g. the design of the building protection channel itself, which is used to create the protection channel arrangement, or the combination of the individual elements mentioned into a kit to create a building protection channel that is or can be adapted to a specific situation found on site and thus to a specific building. List of reference symbols 1 building protection gutter 2 buildings 3 strip foundation 4 Base plate 5 Flooring 6 Surface water level 7 building wall 8 Moisture barrier layer 9 Thermal insulation 10 Cover 11 Geotextile 12 wall openings 13 Seal 14 Flow area 15 window bases 16 windows 17 window frames 18 side channel 19 first wall facing away from the building 20 floor 21 second wall facing the building

Claims

[1] Protective gutter arrangement, • with a building protection gutter (1), ◯ which is designed to run alongside a foundation (3) of a building (2) in use, ◯ and which has a wall (19) facing the building (2) in use, ◯ a floor (20), ◯ a wall (21) facing away from the building (2) in use, ◯ an upper cover (10), ◯ Wall openings (12) through which water can flow into the building protection channel (1) during use, ◯ and a drain opening from which water can flow out of the building protection channel (1) during use, • and with a drainage shaft, ◯ which is in flow connection with the drain opening of the building protection channel (1) in such a way that, during use, water can flow from the drain opening into the drainage shaft, ◯ and which is designed to drain the water entering the drainage shaft during use to a water collection point. [2] Protective gutter arrangement according to claim 1, characterized by that the cover (10) of the building protection channel (1) is designed to be permeable to water. [3] Protective gutter arrangement according to claim 1 or 2, characterized by that the building protection channel (1) is laid without a gradient. [4] Protective gutter arrangement according to one of the preceding claims, characterized by that a feed pump is arranged in the drainage shaft, which is designed to pump water out of the drainage shaft during use. [5] Protective gutter arrangement according to one of the preceding claims, characterized bythat the wall openings (12) are arranged at a distance above the bottom (20) of the building protection channel (1) in such a way that a flow area (14) of the building protection channel (1) is created below the wall openings (12). [6] Protective gutter arrangement according to one of the preceding claims, characterized by that the opening area created by the wall openings (12) in the wall (21) facing the building (2) is larger than in the wall (19) facing away from the building (2). [7] Protective gutter arrangement according to claim 6, characterized by that the wall (19) facing away from the building (2) is free of wall openings (12). [8] Protective gutter arrangement according to one of the preceding claims, characterized by , that the building protection channel (1) has a secondary channel (18) which extends into a door or window recess and is provided at the top with a water-permeable cover (10), such that the secondary channel (18) increases the effective width of the building protection channel (1) for the absorption of surface water in the door or window recess, wherein the secondary channel (18) is fluidically connected to the building protection channel (1) in such a way that, in use, water flows from the secondary channel (18) into the building protection channel (1). [9] Protective gutter arrangement according to claim 8, characterized by , that the secondary channel (18) has a wall (21) facing the building (2) and a wall (19) facing away from the building (2), and that it has wall openings (12) in these two walls (19, 21). [10] Protective gutter arrangement according to claim 8 or 9, characterized by that the secondary channel (18) is adjustable in terms of its width and / or length. [11] Protective gutter arrangement according to one of the preceding claims, characterized bythat between the building (2) on the one hand and the building protection channel (1) and / or the secondary channel (18) on the other hand, a spacer is arranged on the building protection channel (1) and / or on the secondary channel (18) in front of the wall openings (12) in such a way that a flow path for the water is created from the outside to the wall openings (12) and into the building protection channel (1). [12] Protective gutter arrangement according to claim 11, characterized by that the spacer is designed as a three-dimensional geotextile (11). [13] Building protection gutter (1), ◯ with a first wall (19) which, in use, can be aligned towards a building (2), ◯ a floor (20), ◯ a second wall (21) which, in use, can be directed away from the building (2), ◯ an upper cover (10), ◯ and with a drain opening from which water can flow out of the building protection channel (1) during use, ◯ and with wall openings (12) through which water can flow into the building protection channel (1) during use, ◯ wherein the wall openings (12) are arranged at a distance above the bottom (20) of the building protection channel (1) in such a way that a flow area (14) of the building protection channel (1) is created below the wall openings (12), o and wherein the opening area created by the wall openings (12) in the first wall (21) which can be aligned with the building (2) is larger than in the second wall (19). [14] Building protection channel (1) according to claim 13, characterized by that the second wall (19) is free of wall openings (12). [15] Building protection channel (1) according to claim 13 or 14, characterized by that the cover (10) of the building protection channel (1) is designed to be permeable to water. [16] Building protection channel (1) according to one of claims 13 to 15, characterized by , that the building protection channel (1) has a secondary channel (18) which is provided with a water-permeable cover (10), wherein the secondary channel (18) is fluidically connected to the building protection channel (1) in such a way that, in use, water flows from the secondary channel (18) into the building protection channel (1). [17] Building protection channel (1) according to claim 16, characterized by that the secondary channel (18) is adjustable in terms of its width and / or length. [18] Building protection channel (1) according to claim 16 or 17, characterized by , that the secondary channel (18) also has a first wall (19) which, in use, can be aligned towards a building (2), has a base (20), a second wall (21) which, in use, can be oriented away from the building (2), and wall openings (12) through which water can flow into the secondary channel (18) during use. [19] Building protection channel (1) according to one of claims 13 to 18, characterized by that a spacer is arranged on the building protection channel (1) and / or on the secondary channel (18) in front of the wall openings (12) in such a way that a flow path is created for the water from the outside to the wall openings (12) and into the building protection channel (1). [20] Building protection channel (1) according to claim 19, characterized by that the spacer is designed as a three-dimensional geotextile (11).

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