EP4497895A1 - Fastening element - Google Patents

Abstract

The invention relates to a fastening element (1) of a fastening system for a railing (21) on a parapet or wall crown, which fastening element (1) has a first leg (2) which is intended to rest on the upper surface of the parapet or wall crown and has a second leg (3) which protrudes from the first leg (2), wherein the first leg (2) has chambers or a cavity and, opposite a lower surface (12) with which it is intended to rest on the upper surface of the parapet or wall crown, has a support area (7) for a cover element (19), wherein the support area (7) is inclined by an angle of at least 2 degrees with respect to the lower surface (12).

Description

The invention relates to a fastening element for railings on a wall crown or parapet. The invention relates to a fastening element and a fastening system for attachment to a parapet, a wall crown, a flat roof or balcony parapet or another upper surface of a wall, a wall projection or an opening in a building or structure that is to be covered.

It is often necessary to install additional railings on such a parapet or wall, particularly on balconies or flat roof parapets, which must be installed without impairing the function of the wall covering, which is to protect the top of the wall from the effects of the weather, especially rain. The attachment points of the railing or other object must therefore be reliably sealed against water ingress under the covering element or into the wall.

The FR2696490A1 shows a fastening device for a railing, where the cover is attached with side screws.

The FR2887271A1 shows a fastening device for a railing, which is made of an extruded profile, with a first leg of the fastening device being screwed to the upper surface of the wall crown and a second leg of the fastening device protruding downwards from the first leg next to the wall crown. The second leg protrudes from under a cover of the wall crown and has a mounting surface in this area for an additional holder, in which holder the post of a railing can be placed. To attach the cover, additional mounting elements for the cover are required.

The object underlying the invention is to provide an improved fastening element and fastening system. In particular, this should also facilitate the fastening of the cover.

To achieve the object, a fastening element is proposed which has a first leg which rests on the upper surface of an attic or a wall crown and a second leg which protrudes from the first leg, wherein as an improvement over the prior art it is proposed that the first leg is provided with chambers or a cavity and has a support surface for a cover element opposite the lower surface with which it rests on the upper surface of the attic or wall crown, wherein the support surface is inclined by an angle of at least 2 degrees relative to the lower surface.

The fastening element is made of a material that can bear the load of a railing.

In one embodiment, the fastening element is made from an extruded profile. In one embodiment, the fastening element is made from plastic, for example as an injection-molded part or extruded profile.

In one design variant, the fastening element is made of sheet metal elements.

In one design variant, the fastening element is made up of several interconnected assemblies. The assemblies can be connected, for example, by welding, gluing, riveting, soldering, screwing, a plug connection or tongue and groove profiles. The assemblies can consist of identical or different materials, in particular selected from extruded profiles, plastic elements, sheet metal elements.

In one embodiment, the fastening element consists of only one component, in particular in the form of an extruded profile or plastic element in the form of an injection-molded part or extrusion profile.

The inclination is preferably in the range of 2 to 12 degrees, particularly preferably in the range of 4 to 10 degrees, in particular in the range of 5 to 8 degrees.

Preferably, the second leg also has chambers or a cavity.

Chambers are understood here to mean openings in the fastening element which extend along the width of the fastening element and are open on both sides at the cut edges of the fastening element. The chambers are created in a known manner during the manufacture of the extruded profile. Openings transverse to the extent of the chambers can be made after the manufacture of the extruded profile, in particular by punching, cutting, milling or drilling.

A cavity is understood to be a continuous space in the area of a leg of the fastening element, which is particularly present in the design variant with sheet metal elements.

Preferably, there is a third leg on the second leg, which protrudes at a distance from the first leg on the side of the second leg facing away from the first leg. Preferably, the first leg and the second leg form an angle of 90°. Preferably, the second leg rests on the vertical surface of the parapet or wall crown. Preferably, the second leg and the third leg form an angle of 90°.

The second leg may also have an angle other than 90° or a winding course, in which case it is preferred that the third leg and the lower surface of the first leg are aligned parallel to each other.

The third leg preferably has at least one mounting opening to which a railing part, such as a glass guide rail or a railing rod, can be attached.

The fastening element is attached via the first leg by creating a firm connection between the leg and the parapet or wall crown. The specialist is able to select a suitable fastening depending on the building structure or the construction of the parapet or wall crown. For this purpose, at least one additional connecting element is usually used, which fixes the first leg to the parapet or wall crown. The additional connecting element can extend through an opening in the first leg into the parapet or wall crown. If there is only one connecting element, additional spacers can be provided to prevent the fastening element from tipping around the connecting element, or the connecting element itself can be sufficiently large, e.g. as an M30 threaded bolt.

The first leg preferably has at least two screw holes. The screw holes are preferably spaced apart from one another in the longitudinal direction of the first leg. In other words, the at least two screw holes are spaced apart from one another from the second leg. The screw holes are preferably elongated holes that extend in the longitudinal direction of the first leg. The two screw holes are preferably each in a chamber of the first leg and are preferably separated by an inner wall of the profile. The support surface for the cover element preferably has openings that correspond to the screw holes. If there is only one screw hole, the support surface accordingly has only one opening. The first leg preferably extends beyond an external thermal insulation of the parapet or the facade of the building. The outer region of the first leg is preferably offset from the inner region of the first leg. The step between the inner region and the outer region preferably forms a stop for the external thermal insulation. Preferably, the step is flush with that surface of the building wall, particularly the wall, to which the external thermal insulation is attached.

Preferably, the outer region of the first leg is provided with chambers or has a cavity.

Preferably, the outer region of the first leg has chambers with vertical partition walls. Preferably, the outer region of the first leg can be Thickness of the outer insulation layer can be reduced, preferably in 50 mm increments, by providing a vertical partition approximately every 50 mm. Preferably, the outer section is approximately 200 mm long and has four chambers separated by vertical walls. The outermost chamber is closed off from the outside of the building by an outer wall. The innermost chamber is closed off from the inner section of the first leg by a partition. Any number or all of the chambers of the outer section can be removed to adapt the fastening element to the thickness of the insulation layer.

In one variant, the entire outer region of the first leg is inclined on its upper side, which closes the chambers or the cavity, preferably at the same angle as the support region. The upper surface of the outer region is preferably offset from the support region. The offset region preferably also extends over a partial region of the inner region of the first leg.

Preferably, on the side of the support region facing the second leg, there is also a region of the upper inclined surface which is offset from the support region and which preferably also runs inclined, in particular with the same angle of inclination as the support region.

The offset areas are located below the support area in relation to the inclined plane of the support area and preferably parallel to it. The offset areas are preferably offset from the support area by a few millimeters, for example 3 mm.

The partitions of the second leg serve for stiffening and can be arranged in a suitable manner, obliquely or orthogonally.

In one version, the fastening element is cut from an extruded profile, so that the width of the fastening element can be freely selected. The screw holes and the corresponding openings can be made before or after the individual fastening elements are cut from the extruded profile.

The width is preferably in the range of 5 to 15 cm, in particular in the range of 7 to 12 cm.

Several fastening elements are preferably part of a fastening system.

The fastening elements are attached to the parapet or wall crown at a distance from one another, in particular with screws or threaded bolts. There is preferably crown insulation between the building wall or wall and the respective fastening element. The fastening system preferably comprises at least two hem strips, one of which can be placed and attached to the inner offset area and one to the outer offset area. The hem strips extend in the longitudinal direction of the wall over several fastening elements. The inner hem strip comprises two legs that preferably form an obtuse angle. The outer hem strip comprises two legs that preferably form an acute angle. One leg is placed on the offset area so that the other leg is preferably vertically downwards. A cover element can be hooked onto the two hem strips in a known manner. The cover element preferably rests on the support area and on the two hem strips. There can also be a gap between the hem strips and the cover element. Sound insulation, a fleece or another intermediate layer can optionally be placed between the cover element and the support area or the fastening element.

The hem strips advantageously ensure that the cover element is held to the hem strips throughout, or at least over a large part of its length. Less preferably, however, individual hem elements could also be present on the individual fastening elements, or hooking projections could be provided on the profile of the fastening element, but this reduces the modularity and the ability to combine with different cover elements.

The fastening system preferably comprises a closing angle which can be attached to the outer lower corner area of the first leg. The angle can be L-shaped or T-shaped and can serve as a plaster connection edge. A seal, for example an expansion tape, can be present between the angle and the lower surface of the first leg. The closing angle preferably extends over several fastening elements.

The fastening system preferably comprises insulating wedges, which are applied to the parapet or the wall crown in the area between the fastening elements. The chambers or cavities, in particular those chambers or cavities in which the screw holes are located, are preferably provided with insulating foam.

The fastening system can also comprise fastening components for attaching the railing, as well as railing components, whereby these can be designed according to the state of the art, or any suitable railing of the state of the art can be attached.

The cover element can also be part of the fastening system, or any suitable cover element of the prior art can be attached. The cover element preferably comprises a cover surface from which legs protrude downwards at opposite ends, which legs have inwardly and upwardly directed locking projections or a continuous inwardly and upwardly directed locking web.

Fig. 1:

Veranschaulicht ein beispielhaftes Befestigungselement in Seitenansicht.

Fig. 2:

Veranschaulicht dasselbe beispielhafte Befestigungselement in Seitenansicht, anhand einer Darstellung eines beispielhaften Befestigungssystems in Einbaulage.

Fig. 3:

Veranschaulicht das beispielhafte Befestigungssystem in Einbaulage, anhand derselben Darstellung wie Fig. 2.

Fig. 4:

Veranschaulicht schematisch einen Zwischenschritt der Anbringung eines beispielhaften Befestigungssystems in Ansicht von oben.

Fig. 5:

Veranschaulicht schematisch einen weiteren Zwischenschritt der Anbringung eines beispielhaften Befestigungssystems in Ansicht von oben.

Fig. 6:

Veranschaulicht ein beispielhaftes Befestigungselement, welches aus mehreren Teilen zusammengesetzt ist, in Seitenansicht.

Fig. 7:

Veranschaulicht ein beispielhaftes Befestigungselement, welches aus Blechelementen gebildet ist, in Seitenansicht.

Fig. 8:

Veranschaulicht das beispielhafte Befestigungselement, welches aus Blechelementen gebildet ist, in perspektivischer Ansicht.

The invention is illustrated by drawings of preferred embodiments:

Fig. 1:

Illustrates an example fastener in side view.

Fig. 2:

Illustrates the same example fastener in side view, using a representation of an example fastening system in installed position.

Fig. 3:

Illustrates the exemplary fastening system in installation position, using the same illustration as Fig. 2 .

Fig. 4:

Schematically illustrates an intermediate step in the installation of an exemplary fastening system in a top view.

Fig. 5:

Schematically illustrates another intermediate step in the installation of an exemplary fastening system in a top view.

Fig. 6:

Illustrates an example fastening element, which is composed of several parts, in side view.

Fig. 7:

Illustrates an exemplary fastening element, which is formed from sheet metal elements, in side view.

Fig. 8:

Illustrates the exemplary fastening element, which is formed from sheet metal elements, in perspective view.

In Fig. 1 A variant of a fastening element 1 is illustrated, which is also shown in the Fig. 2-5 is used.

Fig. 2 and Fig. 3 use the same representation, whereby in Fig. 2 only the fastening element 1 is identical to Fig. 1 is provided with reference signs to its components and in Fig. 3 only the other system components and the components of an exemplary structure are provided with reference symbols in order to Fig. 2 and 3 not to overload. The Fig. 4 and 5 show components of the same system or structure in a view from above, in a more simplified representation. In the Fig. 2 to 5 The fastening elements 1 of the Fig. 6 to 8 can also be used.

How best in Fig. 1 and 2 As can be seen, the fastening element 1 is designed as an extruded profile in one embodiment, i.e. it is an aluminum element. The fastening element 1 comprises a first leg 2 and a second leg 3, which protrudes from the first leg 2. The first leg 2 is provided with chambers which are delimited by a lower surface 12 of the first leg 2 and by an upper surface of the first leg 2. At least a part of the upper surface of the first leg 2 is provided as a support surface or support area 7, wherein the support area 7 is inclined by an angle of at least 2 degrees, preferably at least 3, 4, 5, 6 or 7 degrees inclined relative to the lower surface 12.

Preferably, the second leg 3 also has chambers.

Preferably, there is a third leg 4 on the second leg 3, which protrudes at a distance from the first leg 2 on the side of the second leg 3 facing away from the first leg 2. The third leg 4 can be solid as shown, or can also have chambers in another variant.

Preferably, the first leg 2 and the second leg 3 form an angle of 90°. Preferably, the second leg 3 and the third leg 4 form an angle of 90°. Preferably, there is at least one mounting opening on the third leg 4.

The first leg 2 preferably has at least two screw holes 10. The screw holes 10 are preferably spaced apart from one another in the longitudinal direction of the first leg 2. In other words, the at least two screw holes 10 are spaced apart from one another from the second leg 3. The screw holes 10 are preferably elongated holes that extend in the longitudinal direction of the first leg 2. The two screw holes 10 are preferably each in a chamber of the first leg 2 and are preferably separated by an inner wall of the profile. The support surface or support area 7 preferably has openings corresponding to the screw holes 10 (best seen in Fig. 4 and 5 ).

Preferably, the first leg 2 extends beyond an external thermal insulation 23 of the parapet or the facade. Preferably, the outer region 6 of the first leg 2 is offset from the inner region 5 of the first leg 2. Preferably, the step 13 between the inner region 5 and the outer region 6 forms a stop for the external thermal insulation 23. Preferably, the step 13 is flush with that surface of the building wall, in particular wall 22, to which the thermal insulation 23 is attached.

Preferably, the outer region 6 of the first leg 2 is provided with chambers 11. Preferably, the outer region 6 of the first leg 2 has chambers 11 with vertical partition walls. Preferably, the outer region 6 of the first leg 2 can be shortened depending on the thickness of the outer insulation layer, preferably in steps of 50 mm, by having a vertical partition wall approximately every 50 mm. Preferably, the outer region 6 is approximately 200 mm long and has four chambers 11 separated by vertical walls. The outermost chamber 11 is closed off from the outside of the building by an outer wall. The innermost chamber 11 is closed off from the inner region 5 of the first leg 2 by a partition wall. A Any number or all of the chambers 11 of the outer region 6 can be removed in order to be able to adapt the fastening element 1 to the thickness of the outer thermal insulation 23. The entire outer region 6 of the first leg 2 is inclined on its upper side, which closes the chambers 11, preferably at the same angle as the support region 7. Preferably, the upper surface of the outer region 6 is offset from the support region 7. Preferably, the outer offset region 8 also extends over a partial region of the inner region 5 of the first leg 2.

Preferably, on the side of the support region 7 facing the second leg 3, there is also a region 9 of the upper inclined surface of the first leg 2 which is offset from the support region 7 and which preferably also runs inclined, in particular with the same angle of inclination as the support region 7.

The partition walls of the second leg 3 serve to stiffen the structure and can be arranged in a suitable manner, either diagonally or orthogonally, and are not limited to the embodiment shown. A specialist in the field of extruded profiles is able to calculate the dimensions and the course of the outer contour and the partitions of the profile in a suitable manner.

As shown, there may be curves in the transition between legs 2, 3 and 4.

The fastening element 1 is cut from an extruded profile so that the width of the fastening element 1 can be freely selected. The screw holes 10 and the corresponding openings can be made before or after cutting the individual fastening elements 1 from the extruded profile.

The width of the fastening elements 1 is preferably in the range of 5 to 15 cm, in particular in the range of 7 to 12 cm.

The fastening element 1 of the Fig. 6 is similar to the already described fastening element 1 of the Fig. 1-3 before.

In Fig. 6 an alternative arrangement of the partition walls of the second leg 3 is shown, in the form of two obliquely running partition walls.

Another in Fig. 6 The optional feature shown is raised webs in the area of the outer offset region 8. The upper surface of these webs is preferably flush with the support region 7. In one embodiment, there is at least one raised web on the outer offset region 8.

Both or one of the optional features described can also be used in the Fig. 1 illustrated variant.

In the version of the Fig. 6 the fastening element 1 is composed of at least two parts, wherein the individual parts can be formed from extruded profiles.

In one embodiment, the entire outer region 6 of the first leg 2 is designed as a separate extruded profile, which is attached to the inner region 5 of the first leg 2, in particular welded or glued.

As illustrated, alternatively or additionally, a connection point of two extruded profiles can be present on the inner region 5 of the first leg 2. Preferably, the second leg 3 and the first chamber of the first leg 2 are present on a first extruded profile and at least one further chamber of the inner region 5 of the first leg 2 is present on a second extruded profile, which are fastened to one another, in particular welded or glued. The Fig. 6 The screw holes 10 that are not visible are preferably present in the second continuous casting profile, in particular in two separate chambers of the second continuous casting profile. As shown, the second continuous casting profile can only have these two chambers with screw holes 10.

The in Fig. 7 and 8 The illustrated variant of a fastening element 1 made of sheet metal corresponds in terms of external shape to the variants of Fig. 1 to 3 and 6 . What is different is that the fastening element 1 made of sheet metal does not have any chambers, or does not have to have any chambers. As is particularly evident in Fig. 7 As can be seen, there can be a single cavity in the fastening element 1, which is present in the region of the second leg 3 and the first leg 2. The single cavity can also extend over the inner region 5 and the outer region 6 of the first leg 2.

The fastening element 1 made of sheet metal can be formed from an angle element and a cover element. The angle element comprises the first leg 2 and the second leg 3 and preferably also the third leg 4. The first leg 2 comprises at least one, preferably two screw holes 10. The cover element forms the hollow space for the second leg 3 and the hollow space for the first leg 2. The cover element forms the support area 7 and, if provided, the two offset areas 8 and 9.

Wall areas of the cover element adjoin the support area 7 on both sides. These wall areas connect the support area 7 with the angle element in the area of the lower surface 12. The wall areas also preferably protrude inwards beyond the second leg 3 and run downwards there to the third leg 4. Following the front offset area 9, a section of the cover element runs downwards to the third leg 4. The wall areas form the lateral boundary of the cavity in the Area of the second leg 3, the first leg 2 and the rear area 6. The wall areas preferably have openings which can be used to introduce insulating foam.

In a variant not shown, the wall areas have slot-shaped, rectangular or longitudinally oval openings in the area of the screw openings 10. This allows the heads or nuts of the screws or threaded bolts 18 to be tightened from the side with a wrench.

The outer region 6 can be formed exclusively by the cover element. The outer region 6 can be open at the bottom. The lower surface of the outer region 6 is formed by the front edges of the two wall regions of the cover element. The rear side of the outer region 6 is preferably closed. For this purpose, a sheet metal section can run downwards from the rear offset region 8. There can be a gap between this sheet metal section and the wall regions, as in Fig. 7 is recognizable.

The step 13 is formed by stepped wall sections and in the lower area by the end of the angle element as also in Fig. 7 is recognizable.

The angle element is preferably made of thicker sheet metal than the cover element. The angle element can be wider than the cover element so that the cover element rests against the angle element with the front sides of its sheet metal sections. Tabs of the cover element can protrude into slots in the angle element.

The fastening element 1 of the Fig. 7 and 8 is adaptable to the structural conditions in such a way that the angle element and/or the cover element can be cut out of a sheet metal in the required dimensions, in particular by laser cutting. In particular, the length of the outer region 6 can be adapted to the thickness of the outer thermal insulation 23.

Several fastening elements 1 are preferably part of a fastening system, as shown in Fig. 4 and 5 is evident.

The fastening elements 1 are fastened to the parapet or parapet at a distance from one another, in particular with screws or threaded bolts 18. There is preferably a crown insulation 25 between the wall 22 and the respective fastening element 1. The screws or threaded bolts 18 are anchored in a manner known to the person skilled in the art below the crown insulation 25 in the wall, in particular a concrete wall or in a brick wall. As illustrated, the fastening element 1 is preferably clamped between two nuts on the threaded bolts 18.

The fastening system comprises at least two hem strips 14 and 15, one of which is placed and fastened on the inner offset region 9 and one on the outer offset region 8. The hem strips 14, 15 extend in the longitudinal direction of the wall over several fastening elements 1. The inner hem strip 15 comprises two legs that enclose an obtuse angle. The outer hem strip 14 comprises two legs that enclose an acute angle. One leg is placed on the offset region 8, 9 so that the other leg is vertically downwards. A cover element 19 can be hooked onto the two hem strips 14, 15 in a known manner. The cover element 19 preferably rests on the support region 7 and on the two hem strips 14, 15. There can also be a gap between the hem strips 14, 15 and the cover element 19. The hem strips 14, 15 can be glued or screwed to the fastening elements 1, for example.

The hem strips 14, 15 advantageously ensure that the cover element 19 is held to the hem strips 14, 15 throughout, or at least over a large part of its length. Less preferably, however, individual hem elements could also be present on the individual fastening elements 1, or hooking projections could be provided on the profile of the fastening element 1, which, however, reduces the modularity and combinability with different cover elements 19.

The fastening system preferably comprises a closing angle 16, which can be attached to the outer lower corner area of the first leg 2. The closing angle 16 can be L-shaped or T-shaped and can serve as a plaster connection edge. A seal 17, for example an expansion tape, can be present between the closing angle 16 and the lower surface of the outer area 6 of the first leg 2. The closing angle 16 preferably extends over several fastening elements 1. The closing angle 16 can be glued or screwed to the fastening elements 1, for example.

The fastening system preferably comprises insulating wedges 28, which are applied to the parapet or the wall crown in the area between the fastening elements 1. The cavity or the chambers, in particular those chambers in which the screw holes 10 are located, are preferably provided with insulating foam.

The fastening system can also comprise fastening components 20 for attaching the railing 21, as well as railing components, whereby these can be designed according to the state of the art, or any suitable railing 21 of the state of the art can be attached. In the example of the Fig. 3 and 5 the fastening component 20 is a glazing bead rail which extends over several fastening elements 1 and in which at least one glass pane is inserted as a railing 21.

The cover element 19 can also be part of the fastening system, or any suitable cover element 19 of the prior art can be attached.

As in the Fig. 3-5 As can be seen, there is an internal thermal insulation 24 on the inside of the wall crown or parapet. The first leg 2 covers the internal thermal insulation 24, the crown insulation 25 and the external thermal insulation 23 when installed.

As is known in the art, a sealing layer 26 or sealing level can be connected to the inner thermal insulation 24 or to the inside of the parapet or parapet, which preferably extends upwards behind the second leg 3. Usually, below the third leg 4 there is preferably a floor 27 known in the art, in particular a prefabricated floor.

Claims (15)

Fastening element (1) of a fastening system for a railing (21) on a parapet or wall crown, which fastening element (1) has a first leg (2) which is intended to rest on the upper surface of the parapet or wall crown and has a second leg (3) which protrudes from the first leg (2), characterized in that the first leg (2) is provided with chambers or a cavity and, opposite a lower surface (12), with which it is intended to rest on the upper surface of the parapet or wall crown, has a support area (7) for a cover element (19), wherein the support area (7) is inclined by an angle of at least 2 degrees relative to the lower surface (12). Fastening element (1) according to claim 1, characterized in that it has a third leg (4) which projects at a distance from the first leg (2) on the side of the second leg (3) facing away from the first leg (2), preferably at an angle of 90°. Fastening element (1) according to one of claims 1 or 2, characterized in that the first leg (2) and the second leg (3) enclose an angle of 90°. Fastening element (1) according to one of claims 1 to 3, characterized in that the first leg (2) has at least two screw holes (10) in the form of elongated holes, which are provided at a distance from one another in the longitudinal direction of the first leg (2) on the lower surface (12). Fastening element (1) according to one of claims 1 to 4, characterized in that the first leg (2) has an inner region (5) which adjoins the second leg (3) and an outer region (6) which adjoins the inner region (5) towards the outside, the lower surface of the outer region (6) being offset from the lower surface (12) of the inner region (5) and parallel to the latter. Fastening element (1) according to one of claims 1 to 5, characterized in that the first leg (2) has an inner region (5) which adjoins the second leg (3) and has an outer region (6) which adjoins the inner region (5) towards the outside, wherein the outer region (6) has a plurality of chambers (11) which are separated from one another by vertical partition walls. Fastening element (1) according to one of claims 1 to 6, characterized in that an area (8) of the outer upper surface of the first leg (2) which is offset relative to the support area (7) adjoins the support area (7) on the outside. Fastening element (1) according to one of claims 1 to 7, characterized in that the entire outer upper surface of the first leg (2) is designed to be inclined, with a region (8, 9) of the outer upper surface of the first leg (2) which is offset relative to the support region (7) adjoining the support region (7) on both sides. Fastening element (1) according to claim 7 or 8 in combination with claim 5 or 6, characterized in that the outer stepped region (8) extends over the entire outer region (6) and over a partial region of the inner region (5) of the first leg (2). Fastening element (1) according to claim 2 in combination with claim 5 or 6, characterized in that it has been cut to the desired width from an extruded profile, which extruded profile comprises the inner region (5) and the outer region (6) of the first leg (2), the second leg (3) and the third leg (4). Fastening system for attaching a railing and at least one cover element (19) to an attic or wall crown, comprising a plurality of fastening elements (1) according to one of the preceding claims, characterized in that the fastening system also has at least two hem strips (14, 15) which, after assembly, extend in the longitudinal direction of the wall over a plurality of fastening elements (1), wherein an inner hem strip (15) and an outer hem strip (14) are present at opposite ends of the fastening elements (1) and are fastened to them, wherein the hem strips (14, 15) comprise downwardly projecting legs onto which the cover element (19) snaps into place during assembly. Fastening system according to claim 11, characterized in that it comprises at least one end angle (16) which extends in the longitudinal direction of the wall over several fastening elements (1) and which can be attached to the outer lower corner region of the first leg (2) or is attached after assembly. Fastening system according to claim 11 or 12, characterized in that it comprises at least two threaded bolts (18) per fastening element (1), wherein the fastening element (1) is fastened between two nuts on each of the threaded bolts (18). Fastening system according to one of claims 11 to 13, characterized in that the fastening elements (1) are present above a crown insulation (25), in particular rest with the lower surface (12) on the crown insulation (25), and also extend over the inner thermal insulation (24) and the outer thermal insulation (23). Fastening system according to one of claims 11 to 14, characterized in that a fastening component (20) can be attached or is attached after assembly to a region of the third leg (4) which projects from the second leg (3) under the cover element (19), wherein either one fastening component (20) of a railing is present on each fastening element (1) or one fastening component (20), in particular a glass guide rail, extends in the longitudinal direction of the wall over several fastening elements (1).

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