EP3179014B1 - Framework roof binder with a corner part and a roof assembly using the same - Google Patents

Description

The present invention is concerned with a truss roof truss according to the preamble of claim 1 and with a roof arrangement using this truss roof truss according to the preamble of claim 13. For marquees, emergency shelters or also as weather protection on construction sites, there is a great need for temporary roofs which can be erected quickly and easily or halls. The latter differs from the former by definition in that, in addition to a roof that is present in every case and is mechanically supported in some way, there are also walls. These roofing structures and halls should have certain desired properties: on the one hand, they should be quick to assemble and assemble with little personnel. On the other hand, no heavy equipment, in particular no crane, is required for erection, but at the same time they should also offer the best possible tightness and the best possible protection against weather, in particular against rain, wind and driving rain. Another requirement is that they also from the inside against the resulting spray material, such as. B. occurs in a building cleaning with a pressure washer, are tight. On wintry construction sites and accordingly cold climates, thermal insulation is also an important aspect. In addition to these technical aspects, there are economic and practical ones. It is advisable if such short-term, temporary roofing or halls consist of as few different sub-types as possible. This considerably reduces the effort in the production as well as in the storage. It is also important, not only for the assembly, but also for the transport of the parts, that as few parts as possible are used and that they are made as light as possible.

Such canopies or halls are well known in the prior art. They are made up of roof trusses, several of which are placed parallel to each other on a supporting structure at a certain distance and hold a roof skin between them. As a supporting structure, either a part of the building, e.g. B. a wall of a building, come into question or if such does not exist, a scaffold is used in the prior art. Roof structures of this type protect against simple rain, but are not suitable for protecting a construction site or an event against wind or driving rain. In order to achieve this they have to be expanded to a hall, i.e. it also requires a cladding of the walls or the support structure, which is generally similar to the roof.

Two options are used for the cladding. On the one hand, sheets that are hung in a cassette-like manner in the corresponding holding device of the support structure or wall supports, or tarpaulins that are generally of rectangular shape and are provided with piping or piping beads on opposite edges, so that they fit into corresponding grooves on the support structure or the wall supports attached keder rails introduced can be. The tarpaulins are then pulled up as far as possible, this is generally according to the state of the art up to the eaves of the hall or roof construction thus created. The roof and wall or the tarpaulins of the roof and wall construction meet at the eaves, leaving an open gap. This is a complete seal against rain, but especially against wind, and it also prevents the roof structure from being sealed against splashing water. Furthermore, due to the natural convection in which warm air rises, this can easily escape through the gap and thermal insulation of the roof structure is also compromised by the gap remaining on the eaves.

This problem has been recognized for a long time and some methods and devices for solving them are known in the prior art. The simplest of these is to let the roof protrude a certain distance from the wall, which means that the roof is extended by about one or two meters beyond the joint on the eaves and thus the open gap. Without the use of special components, this offers fairly good protection against rain and conditional protection against driving rain, but does not help to seal the open gap against wind. Furthermore, the thermal insulation is hardly improved by this measure. Furthermore, the space required for this solution is not always available. Construction sites in the inner city area can be problematic, for example, where there is hardly any space between the supporting structure, according to the state of the art, either already existing building structure or a scaffold, and an adjacent building.

A constructive way to seal the gap using a specially developed part is in the script DE 43 36 016 disclosed. This describes a bent piping rail connection piece, which is suitable for connecting piping rails or the grooves of the piping rails of a roof truss to those of a wall bracket without kinks, so that the piping of a tarpaulin can be pulled through from one part to the other. This makes it possible to use a single continuous tarpaulin, avoiding the open gap on the eaves and achieving a much better seal. The disadvantage of this solution is that there is no stable connection between the two areas, ie the wall or the wall bracket and the roof or the roof truss. Both must therefore be supported separately, which increases the need for additional parts and represents an additional workload.

A better solution in this regard is in the utility model DE 201 05 534 described. In this a quick assembly hall, constructed of truss roof trusses and truss wall girders connected with a corner device is disclosed. This corner device, as well as, of course, roof trusses and wall brackets, all have one or two parallel welt grooves, inserted into the welt of roof tarpaulins and first led from one side of the hall to a corner part, then the roof, then the second corner part to the other side so that overall a completely sealed construction is created. The corner part serves to accommodate a curved welt groove, but also to create a mechanically stable connection between the roof and the wall. The disadvantage of the teaching disclosed there is that the truss structure used only consists of an upper and a lower flange, with the welt rails being fastened to the upper flange and thus subject to static stress. This means, that the tarpaulin is loaded during assembly and especially during dismantling, which makes assembly and dismantling correspondingly more difficult to carry out. This makes assembly more difficult and the tightness of the construction can also be called into question. This problem can be mitigated in terms of design by using larger and, above all, higher roof trusses or thicker wall brackets, which has the obvious disadvantage of a higher material consumption and thus also higher costs and an increased space requirement during construction. Furthermore, assembly of the quick assembly hall disclosed there is made more difficult by the fact that the wall and roof racks are different, that is to say different parts are required for this.

It should also be noted in the corner solution described above that the entire roof articulation angle, i.e. the articulation angle between the roof and the wall, which results from the roof pitch angle by subtracting the same from 90 °, is carried out at once. This has the disadvantage that when used on a roofing solution without a wall, the corner part there cannot be used, since there would be an impractical overhang between the roof and the upper part of the supporting structure. Such a solution would not be applicable, particularly on cramped construction sites. This is particularly the case with the solution there, since the wall-side leg of the corner solution is longer than the roof-side. But even with a symmetrical design, this problem would still exist. Only a massive shortening of the wall-side leg compared to the roof-side to an almost complete disappearance would result in an acceptable protrusion. However, such a short leg would in turn have static disadvantages, since the diagonal stiffening struts present therein form an almost right angle with the vertical posts or belts.

Another truss roof truss or roof arrangement of the known type is in the US 5,784,842 A described.

Against this background, the present invention sets itself the task of finding a roof arrangement of roof trusses and supporting structure or wall supports, in which the problematic gap described can be closed along the eaves, roof trusses and wall supports to be used with minimal depth and in one The design is as versatile as possible so that as few different parts as possible are required and the roof skin is as easy and quick to install and remove.

This object is achieved by a truss roof truss with a corner part and a roof arrangement using the same according to independent claims 1 and 13. The corner part of the roof truss according to the invention here consists of two essentially straight legs that abut each other at an angle different from 180 ° and each as a lattice girder are built up. According to the invention, the lattice girders consist of at least two belts, namely an upper and a lower belt. Another so-called center belt can run in between. All straps are connected to each other by orthogonal and diagonal struts. On the sides of one of the belts, ideally the middle belt, if present, there are grooves for receiving piping from roof tarpaulins. At the kink where the two legs meet at an angle, the welt rails must be guided in arches, ie they cannot exactly follow the straps carrying them there. When bending the keder grooves or keder rails, care must be taken that the minimum bending radius, which is determined by the flexibility of the keder used, is not exceeded. The two open ends of the corner part are here for connection to a lattice girder of the roof truss according to the invention or a wall girder prepared and advantageously carried out in the same way, ie both ends are dimensioned the same, whereby they can be connected to the same type of lattice girder.

However, the essential property of the truss roof truss with corner part according to the invention is its geometry: the articulation angle of the corner part, i.e. the complement of the angle at which the two legs meet at 180 °, is chosen to be smaller than a roof articulation angle of the roof structure in which it is to be used. In order to keep the number of different part types as low as possible, it is advisable to choose the angle of the corner part exactly half as large as the roof angle, because then the entire roof angle can be completed by pairing two corner parts to form a corner device.

In order not to make the dimensions of the corner device composed of two corner parts too large, the legs of a corner part of the truss roof truss according to the invention are selected to be of different lengths, the shorter legs advantageously being adjacent to one another when two corner parts are put together. If this is desired, the longer legs can also be put together. This gives you additional design freedom when it comes to the shape of the roof.

If only a pure roof construction without a wall is to be created during use, e.g. if a roof is supported on already existing building structure on one or both sides and makes additional support by wall brackets unnecessary or even impossible due to lack of space, a roof truss with corner parts according to the invention can be used be used one end and thus thanks to the different leg length of the corner parts of the invention Roof trusses can be used to achieve an almost overhang-free, clean finish to the roof.
It is also conceivable to continue the roof covering, which consists of keder tarpaulins drawn into the keder grooves of a roof construction using the roof truss with corner part according to the invention, by attaching keder rails to the support structure and aligning them and making them as kink-free as possible on the grooves of the corner part .

The advantage of the use of three-belt lattice girders according to the invention and attachment of the grooves to the central belt is that the static tensions are limited to the upper and lower chord, and the central belt allows tensioning and pulling out of the tarpaulin at the neutral point without tension. The fact that two parallel welt grooves are offset on one side means that either two continuous tarpaulins can be used or that individual tarpaulin segments with a large overlapping eaves area can be used. The former would have the advantage of complete tightness and also almost the best possible thermal insulation. However, you need two tarpaulins for this and therefore have a higher effort, both materially and during assembly. In the latter method, on the other hand, tightness and also thermal insulation are not perfect, but mostly they are still good enough, especially if additional insulating elements are inserted in the overlap area. The big advantage is that tarpaulins of a single standard size can be used.

If the corner part of the truss roof truss according to the invention is also prepared at both ends for connection of the same type and the same dimensioned lattice girder, there are different ones beneficial consequences. First of all, it should be mentioned that installation can take place in two directions. If the corner part is designed mirror-symmetrical, there are no static differences and accelerates the assembly. However, it also makes sense to use a corner part that is not mirror-symmetrical. One leg can be longer than the other, but otherwise otherwise prepared for installation in both directions, or the internal structure, ie the number and course of the fastening and stiffening struts is not symmetrical, for example to absorb and dissipate stronger forces in one direction to be able to than in another. With such a structure, it would be possible to achieve a certain required stability with less use of material, but at the price that the corner part would only have to be installed in one orientation. Both forms of asymmetry can also be used together.
An important advantage of the truss roof truss with corner part disclosed here is that its design according to the invention allows the same type of lattice girder to be used both as a roof and as a wall girder. This not only reduces the number of different parts to be kept in stock, but in a very particularly advantageous way it is possible in many cases to build a roof structure or hall that does not require additional supporting scaffolding, which is lengthy to set up. Furthermore, weatherproof cladding of the walls is simplified compared to the use of a scaffold, because lattice girders compatible with the corner part of the truss roof truss according to the invention already have one or two superimposed welt grooves that are connected in alignment and without kinks to the grooves of the corner part and so on allow a roof skin in the form of a tarpaulin with piping to be inserted on one side into the supporting wall lattice girders of the hall, upwards there pull and lead over the connected corner part, then the roof and the other corner part to the lattice girders of the opposite wall and down there, thus closing the hall completely tight. If a scaffolding is used to support the roof, it is necessary to attach keder rails on the outside to achieve the same weather protection. This is not a major problem in itself, such a problem only arises when these welt rails are to be connected to the corner part in an aligned and as kink-free manner as possible, because as a rule the roof protrudes beyond the outside of the scaffolding and the amount of this protrusion is different from time to time.

By means of the truss roof truss with corner part according to the invention, a hall or roof can be completely or almost completely and without great effort sealed and in particular the gap in the area of the eaves of the roof can be closed, which was not or only difficultly possible according to the prior art. The roof construction using the half-timbered roof truss with corner part allows the realization of various roof shapes. On the one hand pent roofs, which can rest on one side or on both sides of already existing building structure or if such is not available on one side, can be supported by a scaffold, or also ridge roofs, in which truss roof trusses according to the invention are used, which are usually are constructed from two straight lattice girders, connected by a ridge segment or ridge part attached in the middle, but at least one end of the lattice girder ends, which are generally facing away from the ridge part, are attached to at least one. Like the previously described pent roofs, these ridge roofs can be placed on an existing building structure or on an additional support structure to be newly erected. This support structure is to be erected in Generally also involves a lot of effort, especially if a scaffolding has to be set up specifically for this. However, the truss roof truss according to the invention allows the geometry of its corner part, which has connections compatible with the same type of lattice girder at both ends, to also use the (roof) trusses used in the truss roof truss according to the invention as wall supports. Likewise, the corner part can also be used as a ridge part, whereby due to the usually larger corner angle on the eaves, a larger roof slope angle and thus a smaller roof angle would result, which increases the weight of the roof per square meter of floor area, but also the permissible snow load accordingly lets rise (if the support structure is designed for it). These possible uses minimize the need for the parts required to build a covered temporary hall structure. As a further advantage, the truss roof truss with corner part according to the invention enables the space-saving design of the corner part to be assembled or at least partially assembled for transport to a place of use or, in the case of dismantled transport, makes loading easier, since the corner part according to the invention, which enables a two-piece corner solution, has smaller dimensions than a one-piece one Has corner solution.

Advantageous further developments of the present invention, which can be implemented individually or in combination, will be explained below. In order to be able to pull in and remove a roof and wall skin from keder tarpaulins quickly and without tension, lattice girders according to the invention consist of three belts, upper, lower and one in between Center belt used, the welt grooves run along the sides of the center belt.

In order to be able to use truss roof trusses according to the invention with a corner part as a middle segment and not only as a gable segment of a roof arrangement, it is necessary to provide welt grooves on both sides of the middle belt. These should advantageously have the same distance from one another on both sides and, at least in kink-free regions of the legs or the corner part, should follow the longitudinal extension of the central belt in parallel. It is advisable to design the center belt as a single piece as a double keder rail, which has a constant bending radius in the area of the kink.

Since the piping of roof tarpaulins is not as flexible and pliable as possible, it must be ensured that the bending radius of the piping rails of the corner part is not too small; in general, it should be chosen as large as possible.

For simplified production, it is advisable for the legs of the corner part of the truss roof truss according to the invention to run in a straight line outside the buckling area, even if this is not the optimal shape for structural reasons, with 'optimal' here in the sense of a maximum load capacity for a given use of material and covering area is to be understood.
It is also structurally not optimal if both legs have the same distance between the belts, but this has enormous practical advantages. On the one hand, also for the production, since similar struts can be used, but the greatest advantage is that lattice girders of the same dimensions can be connected on both sides of the corner part. So it is possible for the roof trusses according to the invention as well as the wall girders of a possibly necessary supporting structure to use the same type of lattice girder, which in a very advantageous manner minimizes the number of different types of parts required.

The roof arrangement using the truss roof truss with corner part according to the invention advantageously uses a roof skin which is designed as a keder tarpaulin. To insert such a keder tarpaulin, keder grooves or rails with such grooves should also be provided on the support device or on the wall supports. These are aligned and kink-free on the welt rails of the corner part and thus allow a roof skin or keder tarpaulin to be inserted into the bottom of the wall piece, pushed upwards, then pulled into the roof via the corner part and then continued up to the ridge or even can be led around to the other side.

Furthermore, it is advisable to take advantage of the variable and varied possible uses of the corner part of the truss roof truss according to the invention with a corner part, which is made possible by the connection of similar lattice girders on both sides of the corner part, in that the same lattice girder is used as a support structure or as a wall support of such a support structure as used for the roof trusses. This has the obvious advantage of being able to get by with only one type of part for the wall and for the roof, which has a significant simplification and acceleration of assembly and storage as positive consequences.

Are corner parts and lattice girders with double for the truss roof truss according to the invention and the wall supports of the support structure Keder rails are used, so it is possible to either route two tarpaulins around the area to be sealed and thus to combine complete tightness with very good thermal insulation, or it is possible to overlap individual tarpaulin pieces with a height offset, which means that there is no complete tightness and not quite so good thermal insulation is achieved, but the assembly effort is considerably less, since tarpaulin pieces or segments of the same size or a single standard size can be used. This standard size does not have to be adapted to the size of the roof arrangement to be built, so that overlaps are possible at any point.

Keder rails with double grooves have the further advantage that they also allow sheet metal to be used as the roof skin. This can work in such a way that adapters are inserted in the double welt rails, which can hold appropriately prepared cassette sheets.

In an advantageous manner, it is also possible to do without separate ridge parts, namely if a corner device composed of two corner parts of the truss roof truss according to the invention is used in its place. Since the ridge angle of the ridge is smaller than that of the eaves in conventional roof arrangements, this use of corner parts as ridge part would result in a larger roof slope angle. However, if a bend angle of 60 ° is selected, the corner part according to the invention can serve both as a corner part or as a ridge part in its actual function, without the roof geometry changing.

For particularly good tightness and thermal insulation, it is advisable to use two continuous tarpaulins, which is also only possible using a corner section with double welt grooves.

Further features, details and advantages of the present invention result from the preferred exemplary embodiments explained in the following appendix of the figures. These are for illustration only and are not intended to limit the present invention in any way.

Figur 1:

eine Seitenansicht einer Ausführungsform eines im erfindungsgemäßen Fachwerkdachbinder eingesetzten Eckteils

Figur 2:

Schnitt durch eine erfindungsgemäße Dachanordnung als Satteldach mit erfindungsgemäßen Fachwerkdachbindern mit Eckteilen und daran über eine aus je zwei Eckteilen aufgebauten Eckeinrichtung angeschlossenen Wandträgern

Figur 3:

wie Figur 2 mit zusätzlichen Gerüsten zur beidseitigen Abstützung

Figur 4:

wie Figur 3, jedoch ohne Wandträger und mit nur einem Eckteil auf jeder Seite des erfindungsgemäßen Fachwerkdachbinders

Figur 5:

Schnitt durch ein Satteldach, bei dem das eine Eckeinrichtung aus zwei Eckteilen eines erfindungsgemäßen Fachwerkdachbinders als Firstteil eingesetzt ist

Figur 6:

Schnitt durch eine als Pultdach ausgeführt Dachanordnung, welche auf beiden Seiten durch ein Gerüst unterstützt ist

Show in detail:

Figure 1:

a side view of an embodiment of a corner part used in the truss roof truss according to the invention

Figure 2:

Section through a roof arrangement according to the invention as a saddle roof with truss roof trusses according to the invention with corner parts and wall brackets connected thereto via a corner device constructed from two corner parts

Figure 3:

how Figure 2 with additional scaffolding for bilateral support

Figure 4:

how Figure 3 , but without a wall bracket and with only one corner part on each side of the truss roof truss according to the invention

Figure 5:

Section through a gable roof, in which the one corner device consisting of two corner parts of a truss roof truss according to the invention is used as a ridge part

Figure 6:

Section through a roof arrangement designed as a pent roof, which is supported on both sides by a scaffold

Figure 1 shows a top view of an embodiment of a corner part 11 of a truss roof truss according to the invention with corner part 1, consisting of two unequal legs 2, which are designed as lattice girders and have upper flange 3, lower flange 5 and a central flange 4, which are connected by vertical fastening struts 6 and diagonal reinforcing struts 7 are mechanically connected. Two parallel keder grooves 9 run along the sides of the central chord 4, which are offset in height and bent at a constant radius at the kink point of the corner part, that is to say where the two legs meet at an angle. Two such asymmetrical corner parts 11 can be joined together to form a symmetrical, two-piece corner device 11 'with twice the effective bending angle.

Figure 2 shows the section through a roof construction 100 according to the invention as a saddle roof, consisting of truss roof trusses 1 according to the invention, which in turn are composed of a central ridge part 12 and two straight adjoining lattice girders 10 with corner parts 11 connected to them. The truss roof trusses 1 according to the invention are connected via further corner parts 11 left and right to wall supports 10 serving as supports, which are advantageously formed from trusses 10 identical to the lattice girders 10 of the truss roof trusses 1 according to the invention. With many spans, the stability of this construction 100 is such that no additional support, for example by a scaffold erected specifically for this purpose, is necessary.

In Figure 3 is similar to in Figure 2 a section through a roof construction according to the invention in gable roof construction 100 can be seen, in the truss roof truss 1 according to the invention made of ridge part 12 with (roof) lattice girders 10 enclosed therein on both sides and turn-connected corner devices 11 ′ consisting of two corner parts 11 are connected to wall girders 10, which are connected as in FIG Figure 2 consist of identical roof beams 10 lattice beams. However, it is different from Figure 2 the ridge part stiffened by an additional device 20. In addition, however, a scaffold 30 can be seen here as an additional support, which with the help of the wall brackets 10 and the keder tarpaulins introduced therein, which are continued to the floor in the keder rails 35 connected to the scaffold 30, against the influence of the weather, such as rain , Wind or driving rain are protected, so that problem-free working in the interior enclosed by tarpaulins is possible.

Figure 4 shows a further embodiment of a roof construction according to the invention as a gable roof 100 with truss roof trusses according to the invention made of ridge parts 12 and lattice girders 10 enclosed therein on both sides and again connected to these corner parts 11. This time, however, there are no wall girders 10 and it was dispensed with from pairs of corner parts 11 corner devices 11 ' to form, like this in the Figure 2 and 3rd is shown. In this case, the corner parts 11 are not used to connect to the wall brackets, but rather to let the roof protrude beyond the support structure. In this, the roof skin is led down on the outside of a piping 30 attached as a supporting structure serving as a supporting structure, and thus protection against weather influences including a sufficiently tight closure of the problematic eaves gap is achieved. The piping rails 35 of the wall are brought to the eaves in alignment and largely without kinks to the piping rails or grooves of the corner part 11.

Figure 5 shows a further advantageous use of a corner device 11 'composed of two corner parts 11 of the truss roof truss 1 according to the invention as a replacement for a ridge part of a saddle roof 102. The sloping roof angle of this roof is compared to the angle of the in the Figures 2 to 4 shown saddle roof increased. The mechanical support is provided by a scaffold 30.

Figure 6 shows a roof construction according to the invention as a pent roof 200 with a corner device 11 'of two corner parts 11 of the truss roof truss according to the invention on one and a one-piece, asymmetrical corner part according to the invention Figure 1 on the other hand. Scaffolding 30 is used as support on both sides, but the sealing takes place on one side by means of a wall bracket 10 connected via the corner device 11 'and on the other by means of piping rails 35 attached to the outside of the scaffolding 30.

Reference list

1

Truss roof truss with corner part

10th

Lattice girders (wall or roof)

11

Corner part

11 '

Corner device made of two corner parts

2nd

Leg of a corner part

3rd

Top chord

4th

Middle belt

5

Lower chord

6

Connection fastening strut

7

oblique stiffening strut

9

Keder groove

12th

Ridge part

20th

Ridge stiffening device

30th

Support structure

35

Keder rail

100

Saddle roof construction with ridge part

102

Saddle roof construction with corner part as ridge part

200

Pent roof construction

Claims (22)

1. Framework roof truss (1) of a roof construction comprising

   - at least one lattice beam (10) and

   - at least one corner piece (11), the corner piece (11) comprising
   ∘ two limbs (2), that form a kink angle differing from 0°

   - wherein the limbs (2) and the lattice beam (10) are realized as lattice beams consisting of at least two girders (3, 5) with connection-fastening struts and diagonal bracing struts running therebetween and the open ends are prepared for connection to further lattice beams

   - wherein along one of the girders (3, 5) of the limbs (2) as well as of the lattice beam (10) there are welt grooves (9) running parallel to their longitudinal extent, into which the welt of a roofing, in particular a roof membrane, is insertable in longitudinal direction

   - wherein corner piece (11) and lattice beam (10) are connected to each other at one of their respective ends, and

   - wherein the two limbs (2) of the corner piece (11) are of different lengths,
   characterized in that

   - the limbs (2) and the lattice beam (10) are made up of an upper girder (3), a lower girder (5) and a middle girder (4) with connection-fastening struts (6) and diagonal bracing struts (7) running therebetween,

   - wherein, on one side of the middle girders (4), there are two parallel welt grooves, and

   - the kink angle of the corner piece (11), that is to say the complement of the angle under which both limbs (2) are joined to 180°, is, in an installed state of the corner piece (11), smaller than a roof kink angle of the roof construction in which the corner piece (11) is used.
2. Framework rooftruss according to claim 1, characterized in that the kink angle of the corner piece (11) corresponds to exactly half of the roof kink angle.
3. Framework rooftruss according to claim 1 or 2, characterized in that on both sides of the middle girders (4) two parallel welt grooves (9) are arranged at the same distance to each other.
4. Framework rooftruss according to one of the preceding claims, characterized in that the ends of the limbs (2) of the corner piece (11) opposite from the joint are of equal dimension.
5. Framework rooftruss according to one of the preceding claims, characterized in that the limbs (2) of the corner piece (11) are substantially straight.
6. Framework rooftruss according to one of the preceding claims, characterized in that the welt grooves (9) have a non-zero bending radius everywhere.
7. Framework rooftruss according to one of the preceding claims, characterized in that the corner piece (11) is of one piece.
8. Framework rooftruss according to one of the preceding claims, characterized in that the corner piece (11) is multipart.
9. Framework rooftruss according to one of the preceding claims, characterized in that all girders (3,4,5) of the lattice beam limbs (2) run equidistantly.
10. Framework rooftruss according to one of the preceding claims, characterized in that more than one corner piece (11) is present.
11. Framework rooftruss according to one of the preceding claims, characterized in that more than one lattice beam (10) is present.
12. Framework rooftruss according to one of the preceding claims, characterized in that there is a ridge piece which is, with each of its ends, connected to one lattice beam (10).
13. Roof construction comprising

    - framework rooftrusses (1) according to one of the claims 1 - 12,

    - a support structure (30) as wall support

    - a roofing,
    wherein at least two framework rooftrusses (1) are placed parallel to each other onto the support structure (30) and hold the roofing between them,
    characterized in that

    - the roofing runs without interuption past the eave of the roof and forms more than one kink along its course at the transition from the roof to the wall.
14. Roof construction according to claim 13, characterized in that the roofing is a roof membrane equipped with welts.
15. Roof construction according to claim 13 or 14, characterized in that in the support structure (30) there are welt grooves (9) in which the roofing is guided.
16. Roof construction according to one of the claims 13 - 15, characterized in that the support construction (30) comprises lattice beams (10).
17. Roof construction according to one of the claims 13 - 16, characterized in that corner pieces (11) according to one of the claims 3 - 13 are used.
18. Roof construction according to claim 17, characterized in that the roofing is a multi-piece membrane, which pieces are arranged, by help of the double welt grooves (9), vertically shifted and horizontally overlapping in several places, in particular, if applicable, at the eave of the roof.
19. Roof construction according to claim 18, characterized in that all membrane pieces of the roofing share the same dimensions.
20. Roof construction according to claim 19, characterized in that the roofing consists of metal sheets, that are held by adapters inserted into the double welt grooves.
21. Roof construction according to one of the claims 13 - 20, characterized in that a possibly present ridge piece (12) is formed from corner pieces (11), in particular from two corner pieces (11) connected at their short limbs (2).
22. Roof construction according to one of the claims 13 - 17 or 19 - 21, characterized in that two continous membranes lying on top of each other are used.

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