WO1999018299A1

WO1999018299A1 - Kit for building a self-supporting false roof of a sloping roof

Info

Publication number: WO1999018299A1
Application number: PCT/DE1997/002742
Authority: WO
Inventors: Herm Brueren; Lothar Kerschgens; Age Van Randen; Jos Weber
Original assignee: Lafarge Braas Gmbh
Priority date: 1997-10-02
Filing date: 1997-11-24
Publication date: 1999-04-15
Also published as: NO20001713D0; BR9714921A; DK1019593T3; NO20001713L; WO1999018300A1; NO20001712D0; DE59706417D1; EP1019594B1; NO320098B1; EP1019594A1; NO20001712L; EP1019593B1; AU5547998A; CN1099511C; CN1276035A; DE19743685C1; CN1276034A; EP1019593A1; AU5308898A; CN1099512C

Abstract

The invention relates to a kit (10) for a self-supporting false roof (12) of a sloping roof, comprising flat load-bearing elements (38) to be laid out in the direction ridgeboard-gutter. In order to build a false roof, either for a new building or for restoring old buildings without modifying the internal structure of the roof space by tie rods or similar element, and offer the greatest freedom of layout for the walls on the side of the raising plate, it is suggested that the kit (10) should contain an inferior purlin element (34, 36) to be laid out in the gutter area, on which said flat load-bearing elements (38) can take their bearing, as well as gable elements (14, 16) designed according to the shape of the roof built with said kit (10), and that the inferior purlin element (34, 36) be unsupported and connected by its ends to said gable elements (14, 16) so as to enable the total load of the roof to be transferred to the building (40) by the gable elements (14, 16).

Description

Kit for a self-supporting roof substructure of an inclined roof

The invention relates to a kit for a self-supporting roof substructure of a sloping roof with plate-shaped supporting parts that can be laid in the first eaves direction.

When renovating an older building with a sloping roof, it is common to remove the top floor to create additional living space. An inclined purlin roof has purlins running parallel to the eaves-side walls between the opposite gable walls. At least in the eaves area, purlins and possibly a ridge purlin are provided in the ridge area. The purlins are supported on the eaves-side walls of the building, while the ridge purlins can be supported on the gable walls of the building. Rafters running parallel to each other in the first eaves direction are supported on the purlins, on which roof battens that run parallel to the eaves and which hold the roof tiles are fastened.

If the top floor of an older building was originally only used as a storage space, it is necessary to replace the old roof substructure with a new one with large roof windows, dormer windows, oriels or the like when converting to living space. This results in a significantly higher load on the building walls, especially the eaves-side walls. These are often much weaker in older buildings than today, so that the load-bearing capacity is not sufficient for the higher loads. It is then necessary to increase the load-bearing capacity of the eaves-side walls by additional supports or by widening the masonry. Due to the complex work, the expansion of the attic is often very costly in older buildings. DE 34 21 107 AI discloses a gable roof made up of modular elements. This has plate-shaped supporting parts that can be arranged on both sides of the ridge and that form the roof surface. A supporting part has at least one cover plate, on the underside of which rafters are arranged in the first eaves direction. The rafters of two opposing supporting parts are articulated in the area of their ridge-side ends, so that a collapsible roof substructure results. The roof substructure is on the eaves-side ends of the

Rafters placed on the eaves-side walls of the building. Depending on the pitch of the roof, vertical as well as horizontal outward forces occur. In order to compensate for the horizontal forces, opposite rafters of the supporting parts are connected to each other in the area of their eaves-side ends by tie rods. The tie rods run across the roof space.

The object of the present invention is to provide a kit for the roof substructure of an inclined roof, in which the roof substructure made therefrom is suitable both for new buildings and for the renovation of old buildings, the interior of the roof space is not impaired by tie rods or the like and the client gives the greatest possible freedom with regard to the constructive design of the eaves-side walls of the building.

The object is achieved in that the kit has at least one foot purlin part that can be laid in the eaves area, on which the plate-shaped support parts can be supported, and gable parts that are shaped according to the shape of the roof to be produced with the kit, that the foot purlin part is self-supporting and on its ends can be connected to the gable parts so that the entire load of the roof is transferred to the building via the gable parts. The gable parts of the kit are shaped according to the shape of the roof to be produced with the kit. For a simple saddle roof, the gable part can, for example, be designed as a triangular finished part forming the gable in the front view. In order to facilitate the transport of a heavy and large-sized gable part, the gable part can be assembled from individual segments. The gable part can already be provided with windows, for example with a large triangular gable window. Depending on the arrangement and number of windows, the gable part can be designed like a framework. The gable part can, for example, also be shaped such that it specifies the cross-sectional profile for a composite pent roof or a mansard roof.

During assembly, for example on the shell of terraced houses, the gable parts can be placed on the partitions of the individual terraced houses, so that there is no need to wall up the gable. It is similar with the renovation of old buildings, because the partitions between neighboring buildings are usually designed as fire protection walls stronger than the eaves-side walls. The gable parts can each be fixed by anchors or angles and then stiffened by the purlin parts.

A purlin part is designed so that it is able to absorb the force component resulting from the support of the supporting parts in the direction of the eaves as a transverse force. The forces are transferred to the gable part in question via the connection between the purlin part and the gable part. In this case, the vertical force component corresponding to the weight of the roof is conducted via the gable parts into the gable walls, so that the eaves-side walls of the building remain free of loads from the roof. In this way, e.g. B. a eaves-side wall of the building can be executed completely as a glass facade. The horizontal force components are also taken up by the gable parts, so that hitherto usual tie rods are unnecessary. The support parts can be connected to one another in a hinge-like manner at their ridge-side ends, so that it is sufficient if purlin parts which support the support parts are only laid between the gable parts in the eaves area. In the case of unconnected supporting parts, on the other hand, it is advantageous if the kit additionally has at least one ridge purlin part which can be laid in the ridge area parallel to the ridge and can be connected to the gable parts and to which the plate-shaped supporting parts can be fastened on the ridge side. In the latter case, the supporting parts can be mitred at their ridge-side ends so that they abut each other in the ridge area. Otherwise, a ridge element with a wedge-shaped cross section can be installed in the ridge area, which connects the supporting parts to one another and seals the gap between them. The ridge element can also form a support for ridge pans to be placed on top. The number and arrangement of the purlin parts of the kit is generally not limited and depends on the shape of the roof. For example, the kit for a composite pent roof can have four or more purlin parts.

The purlin parts of the kit can be solid, for example made of steel, concrete, wood or composite material. A very light, yet stable design results if a purlin part is designed as a hollow profile. This training offers the additional advantage that lines for electricity, gas, water, exhaust gas or the like can be laid within the purlin parts.

The purlin parts can have different cross-sections. For example, a ridge purlin part to be installed in the ridge area can have a triangular cross section corresponding to the roof pitch.

However, the cross section of the purlin parts is advantageously round, so that the support parts laid in the first eaves direction are always tangential to the roof at different roof pitches Purlin parts can be put on. Such a purlin part can be tubular, for example, and have rows of holes with elongated holes extending in the circumferential direction. A supporting part can have connecting elements, for example screw bolts, which extend at right angles from its inner surface and can be introduced into the elongated holes of the purlin part, so that the supporting part can be screwed to the purlin part.

The supporting parts rest on the purlin part, preferably with spacer elements interposed. A spacer element can have a flat upper side which can be placed on the plate-shaped component and a lower side which is concavely shaped in accordance with the curvature of the purlin part.

To fasten the purlin parts, a gable part can have receptacles for the ends of the purlin parts that are spaced from its edges. There are two advantages to training a recording. First of all, a torque can be absorbed about the longitudinal axis of the purlin part, which arises as a result of the force component acting in the eaves direction and not acting as a transverse force in the purlin part. Secondly, the recordings can always achieve a precisely fitting connection between the gable part and the purlin part. The forces can be transmitted, for example, by positive locking, in that the geometry of the receptacle is adapted to the cross section of the purlin part. The distance of the recordings to the edges of the gable parts ensures that those laid in the eaves area

Parts of the purlin always hover above the floor of the building and no forces are transferred to them. Additional support is required only in the middle of the purlin parts if the roof is very wide. In the case of a narrow roof, the foot purlin part can be dispensed with in the area of the eaves cover part, so that a gable part only has a portion of a foot purlin part in the area of a supporting part. In this case, the section of the purlin part preferably designed as a short self-supporting arm that is rigidly connected to the gable part.

A receptacle can be used, for example, as a breakthrough, depression or as placed on the inner surface of the gable part

Fitting be formed. A fitting can, for example, be attachable to the gable part with a flange and have a half-shell arranged at right angles to the flange or to the gable part for receiving the purlin part. The half-shell and the purlin part can be connected to one another for example by bolts, so that the roof substructure can be stiffened as quickly as possible during assembly. It goes without saying that a molded projection extending from its inner surface can also be provided as a receptacle on the gable part.

Edge support parts are preferably laid as support parts, at least adjacent to the gable parts, and, in the case of a wide roof, additional support parts in between. Self-supporting plate-shaped cover parts can be mounted between two supporting parts. The kit can therefore have plate-shaped ridge cover parts and eaves cover parts that can be laid between the support parts and do not rest on the purlin parts, but are supported only via the support parts.

The "length" of the roof or a component denotes the extension in the direction of the fall line of the eaves and "width" the extension in the direction parallel to the eaves or to the ridge. Since a roof has a different length in the first eaves direction depending on the pitch of the roof and the length of the gable end of the building and a width that depends on the width of the building, some of the plate-shaped components must always be cut according to the respective structural conditions.

Advantageously, the width of the edge support part, measured so that they form a side frame for an opening, similar to a mat, into the cover parts can be installed with a standard width, in particular a eaves cover part, a ridge cover part and one or more standard cover parts.

While the length of the supporting parts and possibly the

Eaves cover part and / or the ridge cover part is to be adjusted to the length of the roof, only at least one of the edge support parts must be factory-made in width so that the edge support parts are at a distance from each other when installed on the roof

Corresponds to grid dimension. Preferably, both edge support parts are made in the same width. As many prefabricated houses are built today, the dimensions of the buildings are standardized. Because of these conditions, the lengths of the roofs and thus the lengths of the supporting parts and the cover parts are relatively uniform. Insignificant differences can also be compensated for by different roof overhangs.

In order to reduce the width of the opening to the standard width of the cover parts of preferably 3.60 m in the case of a wide roof, further standard support parts with a standard width can be provided. The width of a standard support part is preferably equal to an integer fraction of the width of a standard cover part. Standard supporting parts are preferably 6 m long and 1.20 wide. This results in a grid dimension of 1.20 m for the width of the area between the edge supporting parts, whereby an even narrower grid dimension of 30 cm can be achieved by further standard supporting parts of 90 cm and 60 cm width, for example. It goes without saying that, with a suitable width of the roof, standard supporting parts can also be used as edge supporting parts.

The length of the free surface between the supporting parts is determined by the difference between their length and the sum of the lengths of the eaves cover part, ridge cover part and standard cover part or standard cover parts. If necessary, a To close the remaining gap, a leveling cover with a standard width and individually adjusted length can be provided.

Thus, only the individual dimensions of the

Roof the gable parts, the purlin parts and in their width the edge support parts and in length the compensating cover part, while the other components can be manufactured in large numbers with uniform dimensions. It is understood that the standard width of the eaves cover part, the ridge cover part, the compensating cover part and the standard cover part is always the same. A preferred standard cover part is 1.20 m long and 3.60 m wide. It goes without saying that several standard cover parts can be joined together in the ridge eaves direction, and that a standard cover part can also be used as a eave cover part or as a ridge cover part.

In terms of production technology, this offers the advantage that standard support parts, ridge cover parts, eave cover parts and

Standard cover parts can be manufactured in large quantities with standard dimensions. The cover parts can be connected to the supporting parts or to one another by screwing, for example.

A support part has at least one support extending in the first eaves direction, which gives the support part a high degree of flexural rigidity. The girder can be made of steel, for example, and can be designed as a truss girder or as an I-section with openings in the web to save weight. The carrier can be chambered so as not to impair the aesthetic appearance of the supporting parts.

The cover parts are self-supporting and are supported by the support parts. Similar to the supporting parts, the cover parts can have beams, which in this case run parallel to the eaves or to the ridge and enable the execution of very wide self-supporting cover parts. The arrangement of beams which do not protrude above the supporting or cover parts enables the surface of the roof substructure facing the roof interior to be made smooth. This results in a low component height and thus an additional gain in space.

The principle of the invention is that the kit has purlin parts that are supported at the end on the gable walls, and first-baptismal support parts that are self-supporting and that transmit the load of the roof to purlin parts, as well as self-supporting parts that can be attached to the support parts Has cover parts. It goes without saying that in the case of a very wide roof with more than one section with standard cover parts, at least one standard support part is to be provided between them.

The abutting edges of the components can be butted against one another, with a step fold with projection / recess or with a tongue and groove connection. A seal is provided between the components, particularly an airtight and rainproof seal in the area of the tops of the components. The seal can, for example, as a separate elastic sealing strip, preferably made of neoprene or the like, or as applied to the abutting surfaces of the components

Coating made of permanently elastic material.

In order to enable an expansion of the roof space that corresponds to the individual wishes of the client, the standard cover part can be provided with a roof system part, for example with a dormer window, a roof window, a chimney opening, a ventilation element, a solar module or the like. Due to the standardization, it is also possible to retrofit an initially installed standard cover part against another standard cover part with a special one

Replace roof system part. For example, when the roof space is expanded later, a closed one Standard cover part can be replaced with one with a skylight or with a dormer window.

The use of two compensating cover parts has the advantage that the position of the

Standard cover part between eaves and ridge can be changed, for example, to be able to install a dormer according to the roof pitch and the building regulations in the prescribed parapet height. A cover part with a skylight, a chimney or or

Ventilation element can be made narrower than a standard cover part, for example half the width, and special fitting cover parts can be provided on the side, in particular to precisely adjust the position of a chimney passage to the position of the chimney in the building.

The components of the kit can be made monolithically from a pourable material such as concrete. The components are made very light if they are made of a geopolymer material, lightweight concrete or

Foam concrete are made.

In order to achieve particularly good sound and heat insulation, the plate-shaped components of the kit can be designed in a sandwich-like manner with cover layers and an intermediate sound and / or heat insulation layer. For example, chipboard or lightweight concrete panels can be used as the top layer. Mineral wool, for example, can be provided for sound insulation and polyurethane foam can be provided for thermal insulation. To expand the

To facilitate roof interiors, the cover layer facing the roof interior can already be assembled at the factory, for example by a coat of paint, a coating or a cladding.

For a simple hip roof, the kit can have a triangular hip gable part in the front view, which is beveled on its underside in accordance with the hip slope is, so that a flat support on the ceiling or on the gable wall of the building is possible. Since a hipped roof has a triangular edge surface in the top view between the falling line starting from the ridge end, the eaves and the ridge, it is advantageous if triangular first fitting cover parts are provided in the kit, each filling the area between the edge support part and the hip gable part. In this case, the rectangular edge support part is installed starting from the point of attack of the roof.

For a half-hipped roof, the kit can have a half-crimped gable part in the front view, approximately triangular with a tip angled obliquely towards the ridge, and trapezoidal second fitting cover parts, each of which fill the area between the edge supporting part and the half-crimped gable part, because in this case too, the rectangular edge supporting part starts from the point of attack of the roof.

The plate-shaped components of the kit can already be provided with roof battens on the upper side at the factory, so that they can be covered with roof tiles immediately after assembly.

The plate-shaped components can be covered without roof battens if they are provided on the top with projections running parallel to the ridge, which are arranged at the usual roof battens spacing from one another.

The elaborate roofing with roof tiles can be omitted without having to forego the appealing external appearance of such a roof if the plate-shaped components are profiled on their top according to the shape of roof tiles.

The top of the plate-shaped components can also be provided with roofing membrane material, with the covering already being possible at the factory. Come as roofing membrane material Proven products, preferably for sealing flat roofs.

In the drawing, a preferred embodiment of the invention is shown, which is explained in more detail below.

It shows

1 is a perspective view of a semi-finished roof substructure for a saddle roof manufactured using the kit according to the invention,

2 shows a perspective view of a roof substructure for a hipped roof produced using the kit according to the invention,

3 shows a perspective view of a roof substructure for a half-hipped roof manufactured using the kit according to the invention,

4 shows a perspective view of a complete roof substructure for a saddle roof, produced using the kit according to the invention,

Fig. 5 shows a joint between a plate-shaped

Supporting part and a plate-shaped eaves cover part in a partially broken perspective view,

6 shows a ridge area of a roof substructure constructed with the kit according to the invention in cross section and

7 shows a perspective view of a gable part with a receptacle for a purlin part close to the ridge. In Fig. 1, a semi-finished roof substructure 12 for a saddle roof is produced using the kit 10 according to the invention. The

Roof substructure 12 has two triangular gable parts 14, 16 in the front view, which are designed as prefabricated concrete parts. The front gable part 14 is designed in the manner of a truss, so that it is able to accommodate an approximately trapezoidal, large gable window. The rear gable part 16, however, is designed as a solid gable.

A gable part 14, 16 has three recesses, spaced from its edges, which form receptacles 20, 22, 24, 26, 28, 30 for the free ends of a ridge purlin part 32 and two ankle purlin parts 34, 36. Two recordings 22, 24; 28, 30 are arranged in the lower corner areas of the gable part 14 and 16 near the eaves area, while the third receptacle 20 and 26 is arranged near the ridge area. The geometry of the receptacles 20, 22, 24, 26, 28, 30 is shaped in accordance with the cross section of the purlin parts 32, 34, 36.

The ridge purlin part 32 is formed in cross section as an isosceles triangle corresponding to the roof pitch. The purlin parts 34, 36 have a trapezoidal cross section, in which the lower side runs horizontally, while the upper side runs obliquely at the angle of the roof pitch.

During assembly, the ends of the purlin parts 32, 34, 36 are in the receptacles 20, 26; 22, 28; 24, 30 of the gable parts 14 and 16 can be inserted, so that a supporting structure for the roof substructure 12 with purlin parts 32, 34, 36 extending from the gable part 14 to the gable part 16 is formed. To complete the roof substructure 12 are on the

Gable parts 14, 16 and the purlin parts 32, 34, 36 support frame subsequently attached to the components of the kit 10 forming the roof surface. Representing this Components of the kit 10 are shown in FIG. 1 only a rectangular plate-shaped support part 38 that can be laid in the ridge direction, which is fastened on the ridge purlin part 32 and on the eaves side on the purlin part 34.

The roof substructure 12 described above is shown in FIG. 1 on a schematically represented building 40, of which only two gable-side walls 42, 44 and a floor ceiling 46 connecting the gable-side walls 42, 44 are drawn. The roof substructure 12 is placed with the two gable parts 14, 16 on the gable-side walls 42, 44 of the building 40 and anchored to them. The decisive advantage of the roof substructure 12 is that the forces exerted by the support part 38 are absorbed by the purlin parts 34, 36 above the floor ceiling and introduced into the gable parts 14, 16 via the receptacles 22, 28 and 24, 30. Here, the horizontally outward force component is absorbed and compensated by the gable parts 14, 16, so that tie rods running transversely through the roof space 48 are not required. The vertical force component is passed through the two gable parts 14, 16 into the walls 42, 44, so that the building 40 does not require any load-bearing walls on the eaves.

2 shows a roof substructure 212 for a hipped roof produced with the kit 210 according to the invention in perspective. Except for the gable part 14, the roof substructure 212 essentially corresponds to that shown in FIG. In the front view, the front hip gable part 214 is triangular as a lattice-like prefabricated part, so that it is able to accommodate an approximately trapezoidal large gable window. The underside of the can be placed on the front wall 242 of the building 240

The hip gable part 214 has a bevel which specifies the gable inclination. The foot purlin parts 234, 236 are in the area of their receptacles 222, 224 of the hip gable part 214 insertable ends correspondingly shortened and beveled, the ridge purlin part 232 is correspondingly shortened and beveled at its end facing the hip gable part 214. Since a triangular surface is to be covered in a hip roof between the falling line 250 starting from the ridge end and the gable line 252, the kit 210 for a hip roof has a triangularly cut plate-shaped first fitting cover part 254 and a mirror-image first fitting cover part for the other roof half.

3 shows a roof substructure 312 for a crippled hipped roof produced using the kit 310 according to the invention. Except for the gable part 14, the roof substructure 312 essentially corresponds to that in FIG

Fig. 1 shown. The front cripple-roll gable part 314, which is approximately triangular in the front view, is placed with its underside on the front gable-side wall 342 of the building 340, the lower section of the cripple-roll gable part 314 receiving a gable window lying with the front wall 342 in a vertical plane. The upper section of the Kruppelwalmgiebelteil 314, however, forms a tip angled towards the ridge. The purlin parts 334, 336 have the same length as the purlin parts 34, 36 described in FIG. 1. The ridge purlin part 332 is on its side

The end facing the end of the cripple gable 314 is correspondingly shortened and bevelled. In order to cover the trapezoidal surface emerging from the ridge end 350 and the gable line 352, the kit 310 has a correspondingly cut plate-shaped second fitting cover part 354 and a mirror-image second fitting cover part (not shown in the drawing) for the other roof half.

FIG. 4 shows a complete roof substructure 412 produced with the kit 410 according to the invention for a Saddle roof shown in perspective. As already described in FIG. 1, the kit 410 has two gable parts 414, 416 and three purlin parts, and additionally two rectangular plate-shaped edge support parts 438, 439, a plate-shaped ridge cover part 456, a plate-shaped eave cover part 458 and a plate-shaped standard cover part 460 with a roof system part 464, here with a dormer.

Since the size of the roof is determined by the pitch of the roof and the dimensions of the building 440, these are

Edge support parts 438, 439 are so wide in the factory that the width of the roof area 463 to be covered between them is equal to the standard width of the standard cover part 460. The length of the ridge cover part 456 is designed in the factory so that it is the difference between the length of the edge support parts 438, 439 and the sum of the length of the eave cover part 458 plus the length of the standard cover part 460. The edge support parts 438, 439 are each laid directly next to the gable parts 414 and 416 in the first eaves direction and fastened to purlin parts.

5 shows the joint between a plate-shaped support part 538 and a plate-shaped eave cover part 558 in a partially broken perspective view. The support part 538 is constructed in a sandwich-like manner from three layers, namely from an upper cover layer 566, a lower cover layer 568 and in between one

Thermal insulation layer 533. The upper cover layer 566 and the lower cover layer 568 are connected to one another by struts. Of the struts is only the longitudinal end of the

Support member 538 forming strut 570 shown because this is specially designed. The strut 570 is assembled from two parallel wooden rafters 572, 574, which have depressions 576, 578 on their adjacent longitudinal sides. The recesses 576, 578 of the wooden rafters 572 and 574 form a chamber in which a steel beam 580 is inserted. The steel beam 580 is designed as an I-profile, the web of which with round openings 582 to save weight is provided. The outer wooden rafter 574 facing the eaves cover part 558 has, toward the eaves cover part 558, a lower longitudinal projection 584 extending from its underside and reaching approximately half the height. A sealing strip 586 made of neoprene is laid on the upper side of the lower longitudinal projection 584.

The eaves cover part 558 also has an upper one

Cover layer 588 and a lower cover layer 590, which are connected at a distance by struts running in the first eaves direction, and between which a heat insulation layer 535 is arranged. The strut 592 which forms the longitudinal end of the eaves cover part 558 has, toward the support part 558, an upper longitudinal projection 594 which extends from its upper side to approximately half the height and which forms a step fold with the lower longitudinal projection 584 of the support part 538.

6, the ridge area of an assembly constructed with the kit 610 according to the invention is enlarged

Roof substructure 612 shown in cross section. The ridge purlin part 632 is designed as a round hollow profile, the outer surface of which forms a contact surface 611 for the supporting parts 638, 639 laid on both sides of the ridge. The ridge purlin part 632 has two rows, offset by 90 ° to one another, with elongated holes 613, 615 extending in the circumferential direction. The support parts 638, 639 rest with their ridge-side end sections with the interposition of spacer elements 617, 618 on the ridge purlin part 632. Screws 621, 623 pass through the supporting parts 638, 639, the spacer elements 617, 619 and the elongated holes 613, 615 and protrude into the hollow profile of the ridge purlin part 632. Nuts 629, 631 are screwed onto the free ends of the screws 621, 623, so that the supporting parts 638, 639 are firmly connected to the ridge purlin part 632. In each case opposite the elongated holes 613, 615, round holes 625, 627 are provided for inserting and tightening the nuts 629, 631 Hole diameter is so large that a socket wrench can be inserted.

The supporting parts 638, 639 are provided with an upper cover layer 666, 667 and a lower cover layer 668, 669, which are connected to one another at a distance by struts running in the ridge direction. The space between the cover layers 666, 667, 668, 669 is filled with a sound and heat insulation layer 633, 635.

7 shows a perspective view of a gable part 714 with a receptacle 720 for the end section of a ridge purlin part 732 facing it. The receptacle 720, which is spaced apart from its longitudinal edges, is attached to the gable part 714 in the region of its ridge-side tip. The receptacle 720 is designed as a fitting placed on the inner surface 737 of the gable part 732. The fitting is screwed to the gable part 714 with a flange 739, from which a round half-shell 741 extends at right angles, into which the purlin part 732, which is round in cross section, can be inserted. To prevent rotation, the ridge purlin part 732 has shoulders 743 protruding from its lateral surface at its end which can be inserted into the half-shell 741, of which only the front one is visible in FIG. 7. The purlin part 732 is supported with its shoulders 743 on the upper edge of the half-shell 741.

Claims

E-kit for a self-supporting roof substructure of a sloping roof

1. Kit (10) for a self-supporting roof substructure (12) of an inclined roof with plate-shaped support parts (38) which can be laid in the first eaves direction, characterized in that the kit (10) has at least one leg purlin part (34, 36) which can be laid in the eaves area , on which the plate-shaped support parts (38) can be supported, and gable parts (14, 16), which are shaped according to the shape of the roof to be produced with the kit (10), that the purlin part (34, 36) is self-supporting and attached to it Ends with the gable parts (14, 16) can be connected so that the entire load of the roof is transmitted to the building (40) via the gable parts (14, 16).

2. Kit according to claim 1, d a d u r c h g e k e n n z e i c h n e t that this additionally has a ridge purlin part (32) which can be laid in the ridge area parallel to the ridge and to which the plate-shaped supporting parts (38) can be fastened on the ridge side.

3. Kit according to claim 1 or 2, so that a purlin part (32, 34, 36, 632) is designed as a hollow profile.

4. Kit according to one of claims 1 to 3, characterized in that a section of an ankle purlin part (34, 36) is provided only in the region of a supporting part (38).

5. Kit according to one of claims 1 to 4, characterized in that a gable part (14, 16) from its edges spaced receptacles (20, 22, 24 or 26, 28, 30) for the ends of the purlin parts (32, 34, 36).

6. Kit according to claim 5, characterized in that the receptacle (20, 22, 24; 26, 28, 30) on the gable part (14 or 16) enables a positive connection with the purlin part (32, 34, 36) and, for example, as Breakthrough, recess or as a fitting placed on the inner surface of the gable part (14 or 16).

7. Kit according to one of claims 1 to 6, so that it has at least one plate-shaped eave cover part (458) and a ridge cover part (456) that can be laid parallel to the eaves and ridge between the support parts (38, 438, 439).

8. Kit according to claim 7, characterized in that the width of the support parts (438, 439) is dimensioned such that they form a side frame for an opening, the width of which corresponds to a grid dimension, so that plate-shaped cover parts (456, 458, 460) can be installed with a standard width.

9. Kit according to claim 8, characterized in that the plate-shaped cover part (460) has a roof system part such as a solar module, a dormer window (464), a skylight, a chimney opening or the like.

10. Kit according to one of claims 1 to 9, d a d u r c h g e k e n n z e i c h n e t that the gable part for a hipped roof is designed as a hip gable part (214) in the front view triangular and on the underside one of the

Has hip inclination corresponding bevel, so that a flat support on the ceiling or on the wall (242) of the building (240) is possible.

11. Kit according to claim 10, d a d u r c h g e k e n n z e i c h n e t that it has a triangular cut plate-shaped first fitting cover parts (254) for a hipped roof.

12. Kit according to one of claims 1 to 9, characterized in that for a half-hipped roof the gable part as a half-rolled gable part (314) in the front view is approximately triangular with a ridge angled towards the top, and that the kit trapezoidal second fitting cover parts (354) which each fill the area between the edge supporting part and the crippled gable end part (314).

13. Kit according to one of claims 1 to 12, so that the plate-shaped components (438, 439, 456, 458, 460) are provided on the upper side with projections running parallel to the ridge, which are arranged at the usual batten distances from one another.

14. Kit according to one of claims 1 to 12, characterized in that the plate-shaped components (438, 439, 456, 458, 460) are profiled on their top according to the shape of roof tiles.

15. Kit according to one of claims 1 to 14, so that the plate-shaped components (538; 558) have self-supporting cover layers (566, 568 or 588, 590) and an intermediate sound and / or heat insulation layer (533, 535).