EP1019594B1 - Kit for building a self-supporting false roof of a sloping roof - Google Patents

Description

The invention relates to a kit for a self-supporting Roof substructure of an inclined roof, with gable parts, which according to the shape of the to be manufactured Roof are shaped, with at least one in the eaves area installable ankle purse part and with cover parts, the Purlin parts are self-supporting and at their ends are connectable to the gable parts so that the entire load the roof over the gable parts to the building becomes.

When renovating an older building with a sloping roof it is common to expand the top floor for additional To create living space. A sloping purlin roof points between the opposite gable walls parallel to the purlins running along the eaves. At least are in the eaves area purlins and if necessary in the ridge area a ridge purlin is provided. The purlins are on the Eaves walls of the building supported while the Ridge purlin must be supported on the gable walls of the building can. The purlins are parallel to each other in the first eaves direction running rafters supported on which parallel roof battens are fastened to the eaves, which the Wear roof tiles.

If the top floor of an older building originally it was only used as storage space, it is in the process of conversion required in living space, the old roof substructure a new one with large roof windows, dormer windows, oriel windows or to replace the like. This results in a much higher load on the building walls, in particular of the eaves-side walls. These are common in older buildings much weaker than today, so that the Load capacity is not sufficient for the higher load. It is then required the load-bearing capacity of the eaves-side walls by additional supports or by widening the To increase masonry. Because of the extensive work the expansion of the attic in older buildings often very much costly.

DE 34 21 107 A1 describes a module element Gable roof known. This points to both sides of the ridge arrangeable plate-shaped supporting parts on the roof surface form. A support part has at least one cover plate the underside of which rafters running in the first eaves direction are arranged. The rafters of two each other opposite supporting parts are in the area of their ridge-side ends articulated so that there is a collapsible roof substructure. 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, this occurs outside of vertical also horizontally outward forces. To the horizontal forces are mutually exclusive opposite rafters of the supporting parts in the area of their Eaves ends connected by tie rods. The Tie rods run across the roof space.

A roof substructure mentioned at the beginning is from FR-A-1 227 645 known. According to this document, between the Ridge purlin and the foot purlin and the ridge purlin additional Purlins are provided to be able to carry cover elements that are not self-supporting.

EP 0 103 333 describes a structure composed of plate elements Gable roof known. This points to both sides of the ridge arrangeable plate-shaped components on the roof surface form. A breakthrough can occur in a component Roof windows can be provided. A component has at least one Cover plate on the underside of which is parallel to the ridge or purlin extending to the eaves is arranged. At both A purlin is placed in each end in a U-shaped support recorded in a ridge direction Bar is attached. The strips are on the gable walls or attached to rafters.

The object of the present invention is to provide a kit for to create the roof substructure of an inclined roof, where the roof substructure made from it both for new buildings as well as for the renovation of old buildings is suitable, rafters completely as well as a variety of Purlins should be avoided.

The object is achieved in that the Construction kit from the ridge to the eaves, self-supporting components has, which is plate-shaped on the purlin parts are supported, and that the kit on the support parts attachable between these parallel to ridge and eaves has installable self-supporting plate-shaped cover parts, which are supported only on the supporting parts.

The gable parts of the kit are in accordance with the shape of the manufactured roof shaped. For a simple gable roof, the gable part, for example, as in the front view of the triangular prefabricated part forming the gable be executed. To transport a heavy and To facilitate large-sized gable part, the gable part can be assembled from individual segments. The gable part can already with windows, for example with a large triangular gable windows. ever depending on the arrangement and number of windows, the gable part be designed like a truss. The gable part can for example, be shaped so that it Cross-sectional profile for a composite pent roof or a Mansard roof pretends.

During assembly, for example on the shell of Row houses, the gable parts on the partitions of the individual row houses are placed so that the bricking the pediment is omitted. It is similar with the renovation of Old buildings, because the partitions between neighboring buildings are usually designed as fire protection walls stronger than that Eaves walls. The gable parts can each by Anchors or angles are attached and then through the Purlin parts are stiffened.

A purlin part is designed so that it from the Support of the supporting parts resulting in the direction of the eaves force component acting as a shear force. Via the connection of the purlin part with the gable part the forces are transferred to the gable part in question. This is the weight of the roof corresponding vertical force component is in the gable parts in the Gable walls passed so that the eaves-side walls of the Keep the building free from loads from the roof. On this way z. B. an eaves wall of the building can be completely executed as a glass facade. The horizontal Power components are also from the gable parts added, so that previously common tie rods are unnecessary.

The supporting parts can at their first-sided ends be hinged together so that it is sufficient if between the gable parts only in the eaves area Anklet parts are laid, which are the supporting parts support. In the case of unconnected supporting parts, however, it is advantageous if the kit also has at least one im Ridge area that can be laid parallel to the ridge and with the Gable parts connectable ridge purlin part on which the plate-shaped supporting parts can be fastened on the ridge side. in the the latter case, the supporting parts on their ridge-side ends to be mitred so that they butt in the ridge area. Otherwise, in Ridge area is a ridge element that is wedge-shaped in cross section be laid that connects the supporting parts with each other and seals the gap between them. The ridge element can also be a support for on-hook Form ridge pans. The number and arrangement of the purlin parts the kit is generally not limited and depends on the Shape of the roof. For example, the kit for a Compound pent roof four or more purlin parts exhibit.

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 within the Purlin parts can be laid.

The purlin parts can have different cross sections be trained. So can be installed in the ridge area Ridge purlin part, for example, a triangular one Have the appropriate cross-section. However, the cross section of the purlin parts is advantageous round, so that the supporting parts are laid in the first eaves direction with different roof pitches always tangent to the Purlin parts can be put on. Such a purlin part can for example, be tubular and have rows of holes have elongated holes extending in the circumferential direction. On The supporting part can extend at right angles from its inner surface Have connecting elements, for example screw bolts, which can be introduced into the elongated holes of the purlin part, so that a screw connection of the support part to the purlin part is possible.

The supporting parts rest on the purlin part preferably with the interposition of spacer elements. On Spacer can be attached to the plate-shaped component attachable flat top and one of the curvature of the Part of the purlin correspondingly concave underside exhibit.

A gable part from its edges spaced receptacles for the ends of the Have purlin parts. The training of a recording offers advantages in two ways. First, torque can be around the longitudinal axis of the purlin part are included as a result of not being centered as a transverse force in the purlin part initiated force component acting in the eaves direction arises. Second, the recordings can always be one precise connection between the gable section and the purlin section can be achieved. The transfer of forces can for example, by form fit, by the geometry the recording 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 above the floor of the building hover and transfer no forces to it. Only one very wide roof is an additional support approximately in the Middle of the purlin parts required. With a narrow roof can in the area of the eaves cover part a gable part only in the area of a support part a section of a purlin part exhibit. In this case, the section of the purlin part preferably designed as a short self-supporting arm, the is rigidly connected to the gable part.

A recording can, for example, as a breakthrough, deepening or as placed on the inner surface of the gable part Fitting be formed. A fitting can for example be attachable with a flange on the gable part and a arranged at right angles to the flange or to the gable part Have a half-shell to hold the purlin part. The Half-shell and the purlin part can be, for example Bolts can be connected so that the Roof substructure as quickly as possible during assembly is stiffenable. It is understood that on the gable part also molded projection proceeding from its inner surface as Recording can be provided.

The supporting parts are at least adjacent to the gable parts Edge support parts installed, with a wide roof also more Support parts in between. Between two supporting parts self-supporting plate-shaped cover parts are installed. The Kit therefore has to be laid between the supporting parts plate-shaped ridge cover parts and eaves cover parts, that do not rest on the purlin parts, but are supported only on the supporting parts.

With "length" of the roof or a component the Extension in the direction of the fall eaves and with "Width" means the extension parallel to the eaves or referred to the ridge. Since a roof depending on the roof pitch and Length of the gable end of the building is of different length in the first eaves direction and one of the width of the Building dependent width, are always some of the plate-shaped components according to the respective structural Tailor conditions.

The width of the edge support parts is advantageous, so measured that they unite like a mat form a side frame for an opening in the cover parts can be installed with a uniform width, in particular an eaves cover part, a ridge cover part and one or more Series decking.

While the length of the supporting parts and possibly the Eaves cover part and / or the ridge cover part the length of the Only one of the roofs needs to be adjusted Edge support parts in their width made in the factory be that the edge support parts in built on the roof State have a distance from each other that one Corresponds to grid dimension. Preferably both edge support parts made in the same width. Since many houses in today Prefabricated construction are the dimensions of the Unified building. Because of these circumstances also the lengths of the roofs and thus the lengths of the supporting parts and the cover parts relatively uniform. Can too insignificant differences due to different Roof overhangs are compensated.

To a roof whose width is greater than the width of a Series cover part plus the width of two edge support parts, the width of the opening to the uniform width of the Can reduce deck parts of preferably 3.60 m further series support parts with a uniform width be provided. Preferably the width is one Series support part equal to an integer fraction of the width of a series cover part. Standard load-bearing parts are preferably 6 m long and 1.20 m wide. This results in a grid dimension for the width of the area between the edge support parts of 1.20 m, whereby by further series support parts of, for example, 90 cm and 60 cm wide, an even narrower grid size of 30 cm can be achieved. It goes without saying that when fitting Width of the roof also standard support parts as edge support parts can be used.

The length of the free area between the supporting parts is determined by the difference between their length and the sum of the lengths of eaves cover part, ridge cover part and series cover part or Series cover parts determined. To possibly a remaining one To close the gap, a compensating cover part with the uniform width of the grid size and individual adapted 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 its length the leveling cover part to coordinate, while the remaining components in large numbers can be manufactured with uniform dimensions. It it goes without saying that the width of the eaves part, the Ridge deck part, the compensating cover part and the Series cover part is always the same. A preferred one Standard deck is 1.20 m long and 3.60 m wide. It understands that in the first eaves direction several series cover parts can be joined together, and that a series cover can also be used as eaves cover or ridge cover can.

This offers the advantage in terms of production technology that Standard support parts, ridge cover parts, eaves cover parts and Standard cover parts in large quantities with uniform dimensions can be produced. The Connection of the cover parts with the supporting parts or this with each other, for example, by screwing respectively.

A supporting part has at least one in the first eaves direction trending carrier, the support part a high Flexural rigidity gives. The carrier can for example be made of Steel exist and as a truss or as an I-profile Breakthroughs in the web to save weight. Around not to impair the aesthetic appearance of the supporting parts, the carrier can be chambered.

The cover parts are self-supporting and are from supported the supporting parts. The deck parts can be similar to the supporting parts have carriers, which in this case are parallel to the eaves or to the ridge and the execution of enable very wide self-supporting cover parts.

The arrangement of beams, which the support or cover parts not towering, enables a smooth formation of the Area of the roof substructure facing the interior of the roof. 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, the end of the gable walls are supported, and support parts that can be laid in the first baptism direction, which are self-supporting and the load of the roof transferred to purlin parts, as well as to the Carrier parts attachable self-supporting cover parts. It is understood that with a very wide roof with more than a section with series cover parts between each at least one series support part is to be provided.

The abutting edges of the components can be butted together, with a step fold with projection / recess or with one Tongue-and-groove connection. Between the components a seal is provided, particularly in the area of An airtight and rainproof seal on the top of the components. The seal can, for example, as a separate elastic Sealing strips, preferably made of neoprene or the like, or as applied to the abutting surfaces of the components Coating made of permanently elastic material.

To meet the client's individual wishes to enable appropriate expansion of the roof space Series cover part be provided with a roof system part, for example with a dormer window, a skylight, a Chimney duct, a ventilation element or a Solar module. Because of the standardization it is too possible, a built-in series cover part at a later date against another series cover with a special Replace roof system part. For example, with a later expansion of the attic a closed Series cover part against such with a skylight or can be replaced with a dormer window.

The use of two compensating cover parts offers the Advantage that with the help of this the position of the series cover part between eaves and ridge can be changed to for example a dormer according to the roof pitch and the building regulations in the prescribed parapet height to be able to install. A cover with a skylight, one Chimney opening or a ventilation element can be narrower be designed as a series cover part, for example in half width, and there may be special fitting cover parts on the side be provided in particular the position of a Chimney outlet of the position of the chimney in the building to adapt exactly.

The components of the kit can be monolithic from one castable material such as concrete. A very easy execution of the components results when they are made a geopolymer material, made of lightweight concrete or Foam concrete are made.

In order to achieve particularly good sound and heat insulation, can the plate-shaped components of the kit be sandwiched with facings and one intermediate sound and / or thermal insulation layer. As Top layer can for example chipboard or Lightweight concrete slabs are used. Can be used for sound insulation for example mineral wool and for thermal insulation Polyurethane foam can be provided. To expand the The roof interior can facilitate the roof interior facing cover layer is already assembled at the factory, for example by painting, coating or a disguise.

For a simple hipped roof, the kit can be installed in the Front view of triangular hip gable part that have bevelled accordingly on its underside to the hip inclination is, so that a flat support on the ceiling or on the gable wall of the building is possible. There is a hipped roof in the top view between the one starting from the ridge end Fall line, the eaves and the ridge a triangular edge has, it is advantageous if triangular first in the kit Fitting cover parts are provided, each covering the surface Fill between the edge support part and the hip gable part. In this Case, the rectangular edge support part is based on Fitting point of the roof mounted.

The kit can be used for a half-hipped roof Front view approximately triangular with a sloping towards the ridge angled tip made of crippled whale gable part and have trapezoidal second fitting cover parts, each the area between the edge support part and the crippled whale gable part fill in, because in this case too, the rectangular Edge support part mounted starting from the point of attack of the roof.

The plate-shaped components of the kit can already factory-fitted with roof battens on the top, so that they are covered with roof tiles immediately after assembly can be.

The plate-shaped components can be covered without roof battens if they are on top with parallel to the ridge extending projections are provided in the usual Roof slat distances are arranged from each other.

The elaborate roofing with roof tiles can be omitted without that on the appealing external appearance of a such cover must be waived if the plate-shaped components on their top according to the Form of roof tiles are profiled.

The plate-shaped components can also on their top be provided with roofing material, the cover can already be done at the factory. Come as roofing membrane material Proven preferably for sealing flat roofs Products in question.

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

Fig. 1

eine mit dem Bausatz hergestellte halbfertige Dachunterkonstruktion für ein Satteldach in perspektivischer Darstellung,

Fig. 2

eine mit dem Bausatz hergestellte Dachunterkonstruktion für ein Walmdach in perspektivischer Darstellung,

Fig. 3

eine mit dem Bausatz hergestellte Dachunterkonstruktion für ein Krüppelwalmdach in perspektivischer Darstellung,

Fig. 4

eine mit dem erfindungsgemäßen Bausatz hergestellte komplette Dachunterkonstruktion für ein Satteldach in perspektivischer Darstellung,

Fig. 5

eine Stoßstelle zwischen einem plattenförmigen Tragteil und einem plattenförmigen Traufdeckteil in teilweise aufgebrochener perspektivischer Darstellung,

Fig. 6

einen Firstbereich einer mit dem erfindungsgemäßen Bausatz aufgebauten Dachunterkonstruktion im Querschnitt und

Fig. 7

ein Giebelteil mit einer Aufnahme für ein firstnahes Pfettenteil in perspektivischer Darstellung.

It shows

Fig. 1

a semi-finished roof substructure made with the kit for a gable roof in perspective view,

Fig. 2

a roof substructure made with the kit for a hipped roof in a perspective view,

Fig. 3

a roof substructure made with the kit for a half-hipped roof in a perspective view,

Fig. 4

a complete roof substructure made with the kit according to the invention for a gable roof in a perspective view,

Fig. 5

a joint between a plate-shaped support part and a plate-shaped eaves cover part in a partially broken perspective view,

Fig. 6

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

Fig. 7

a gable part with a receptacle for a purlin part close to the ridge in a perspective view.

1 is one with the kit 10 manufactured semi-finished roof substructure 12 for a Saddle roof shown in perspective. The Roof substructure 12 has two in the front view triangular gable parts 14, 16, which as precast concrete parts are executed. The front gable part 14 is lattice-like trained so that it is an approximately trapezoidal large area Gable window can accommodate. The rear gable 16 on the other hand, it is designed as a solid gable.

A gable part 14, 16 is spaced from its edges three recesses starting from the inner surface, the Recordings 20, 22, 24, 26, 28, 30 for the free ends of a ridge purlin section 32 and two ankle purlin sections 34, 36 form. Two recordings 22, 24; 28, 30 are in the lower Corner areas of the gable part 14 or 16 near the eaves area arranged, while the third receptacle 20 and 26 near the Ridge area is arranged. The geometry of the receptacles 20, 22, 24, 26, 28, 30 each corresponds to the cross section the purlin parts 32, 34, 36 shaped.

The ridge purlin part 32 is in cross section as isosceles triangle formed according to the Roof pitch. The foot purlin parts 34, 36 have one trapezoidal cross-section on which the lower side runs horizontally, while the upper side obliquely below the The angle of the roof slope runs.

During assembly, the ends of the purlin parts 32, 34, 36 are in the recordings 20, 26; 22, 28; 24, 30 of the gable parts 14 or 16 insertable, so that a supporting structure for the Roof substructure 12 with from the gable part 14 to Gable part 16 running parallel to the eaves Purlin parts 32, 34, 36 are formed. To complete the Roof substructure 12 are on the from Gable parts 14, 16 and purlin parts 32, 34, 36 formed support structure below that forming the roof area Components of the kit 10 attached. Representing this Components of the kit 10 is only one in the first eaves direction in FIG. 1 layable rectangular plate-shaped Support part 38 shown, the first side on Ridge purlin part 32 and on eaves side on foot purlin part 34 is attached.

The roof substructure 12 described above is in FIG. 1 shown on a schematically represented building 40 from the only two gable-side walls 42, 44 and one floor ceiling 46 connecting gable walls 42, 44 are drawn. The roof substructure 12 is with the two gable parts 14, 16 onto the gable-side walls 42, 44 of the building 40 and anchored with these. The there is a decisive advantage of the roof substructure 12 in that the forces exerted by the support member 38 by the Anklet parts 34, 36 added above the floor ceiling and via the recordings 22, 28 and 24, 30 in the Gable parts 14, 16 are introduced. Here, the horizontally outward force component of the Gable parts 14, 16 recorded and compensated so that transversely tie rods running through the roof space 48 are not required are. The vertical force component is over the two Gable parts 14, 16 passed into the walls 42, 44, so that the Building 40 no load-bearing eaves-side walls required.

2 is one with the kit 210 manufactured roof substructure 212 for a hipped roof shown in perspective. The roof substructure 212 corresponds essentially to that in FIG Fig. 1 shown. The front hip gable part 214 is in the triangular front view as a half-timbered prefabricated part executed so that it is an approximately trapezoidal large area Gable window can accommodate. The one on the front wall 242 of the building 240 attachable bottom of the The hip gable part 214 has a gable inclination Bevel on. The purlin parts 234, 236 are in the area their in the receptacles 222, 224 of the hip gable part 214 insertable ends shortened accordingly and bevelled, too is the ridge purlin part 232 on its hip gable part 214 facing end shortened accordingly and bevelled. There with a hipped roof between the one starting from the ridge end Fall line 250 and gable line 252 a triangular surface is to be covered, the kit 210 has a hipped roof triangular cut plate-shaped first Fitting cover part 254 and a mirror-image first fitting cover part for the other half of the roof.

3 is one with the kit 310 manufactured roof substructure 312 for a half-hipped roof shown in perspective. The roof substructure 312 corresponds essentially to that in FIG Fig. 1 shown. This is approximately triangular in the front view trained front cripple gable part 314 is with his Underside on the front gable wall 342 of the Building 340 put on, with a gable window receiving lower portion of the crippled gable gable portion 314 with the front wall 342 in a vertical plane. The forms the upper section of the crippled gable part 314 a point angled towards the ridge. The Ankle purse parts 334, 336 have the same length as that 1 described purlin 34, 36th Das Ridge purlin part 332 is on his Krüppelwalmgiebelteil 314 facing end accordingly shortened and beveled. To the between that of the ridge end outgoing drop line 350 and the gable line 352 The kit 310 has a trapezoidal surface appropriately tailored plate-shaped second Fit cover part 354 and one not in the drawing shown mirror-image second fitting cover part for the other half of the roof.

4 is one with the kit 410 according to the invention manufactured complete roof substructure 412 for a Saddle roof shown in perspective. The kit 410 shows As already described in FIG. 1, two gable parts 414, 416 and three purlin parts, as well as two additional rectangular ones 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 series cover part 460 with a Roof system part 464, here with a dormer window.

Because the size of the roof due to the roof pitch and the Dimensions of the building 440 are given Ftändtragteile 438, 439 made so wide in the factory that the Width of the roof area 463 to be covered between them is the same of the uniform width of the series cover part 460. The The length of the ridge cover part 456 is factory-made such that this the difference between the length of the Rahdtragteile 438, 439 and the sum of the length of the Eaves cover part 458 plus length of the series cover part 460. The Edge support parts 438, 439 are each directly next to the Gable parts 414 and 416 laid in the first eaves direction and attached to purlin parts.

5 is the joint between a plate-shaped Support part 538 and a plate-shaped eaves cover part 558 in partially broken perspective view shown. The support member 538 is sandwiched from three layers built up, namely from an upper cover layer 566, one 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 of this is specially trained. The strut 570 is made of two parallel wooden rafters 572, 574 joined together at their recesses 576, 578 on adjacent longitudinal sides exhibit. The recesses 576, 578 of the wooden rafters 572 and 574 form a chamber into which a steel beam 580 is inserted is. The steel beam 580 is designed as an I-profile, its web to save weight with round openings 582 is provided. The outer facing the eaves cover part 558 Wooden rafters 574 point towards the eaves cover part 558 its bottom outgoing to about half the height reaching lower longitudinal projection 584. On the top of the lower longitudinal projection 584 is made of neoprene existing sealing strip 586 installed.

The eaves cover part 558 also has an upper one Cover layer 588 and a lower cover layer 590, which by Struts running in the first eaves direction at a distance are interconnected, and between which one Thermal insulation layer 535 is arranged. The long side End of the eaves cover part 558 forming strut 592 points to Support part 558 one from its top to upper longitudinal projection 594 reaching about half the height, the one with the lower longitudinal projection 584 of the supporting part 538 Step fold forms.

In Fig. 6 the ridge area is enlarged with one kit 610 constructed according to the invention Roof substructure 612 shown in cross section. The Ridge purlin part 632 is designed as a round hollow profile, whose outer surface is a contact surface 611 for the two The sides of the ridge laid support parts 638, 639. The Ridge purlin part 632 has two offset by 90 ° to each other arranged rows with extending in the circumferential direction Slots 613, 615. The support parts 638, 639 lie with their first-side end sections with the interposition of Spacers 617, 618 on the ridge purlin part 632. Screws 621, 623 pass through the supporting parts 638, 639 Spacers 617, 619 and the elongated holes 613, 615 and protrude into the hollow profile of the ridge purlin part 632. On the free ends of the screws 621, 623 are nuts 629, 631 screwed on, so that the supporting parts 638, 639 firmly with the Ridge purlin part 632 are connected. Each against the Elongated holes 613, 615 are for inserting and tightening the Nuts 629, 631 round holes 625, 627 are provided, the Hole diameter is so large that a socket wrench can be inserted.

The support parts 638, 639 are with an upper Cover layer 666, 667 and a lower cover layer 668, 669 provided by struts in the ridge direction in the Distance are connected. The space between the Cover layers 666, 667, 668, 669 is with a sound and Thermal insulation layer 633, 635 filled.

In Fig. 7 are a gable part 714 with a receptacle 720 for the end section facing this one Ridge purlin part 732 shown in perspective. At the Gable part 714 is in the area of its ridge-side tip receptacle 720 spaced from its longitudinal edges. The receptacle 720 is as on the inner surface 737 of the Gable part 732 mounted fitting. The Fitting is on the gable part 714 with a flange 739 screwed, of which a round half-shell 741 at right angles extends into which the purlin part 732, which is round in cross section is insertable. As an anti-rotation device, this shows Ridge purlin part 732 on its in the half-shell 741 insertable end protruding from its lateral surface Shoulders 743 on, only the front of which is visible in Fig. 7 is. The purlin part 732 is with its shoulders 743 on the supported the upper edge of the half-shell 741.

Claims (15)

1. Building kit (10) for a self-supporting roof substructure (12) of an inclined roof, with gable components (14, 16) which are shaped to correspond to the design of the roof to be constructed, with at least one eaves purlin component (34, 36), which can be laid in the eaves region, and with covering components, the eaves purlin component (34, 36) being designed to be unsupported and able to be connected to the gable components (14, 16) at its ends, so that the entire load of the roof can be transferred to the building (40) via the gable components (14, 16),
   characterised in that
   the construction kit has load-bearing components (38, 438, 439) which can be laid so that they are unsupported from ridge to eaves, which are of a sheet design and at least one of which can be supported on the eaves purlin component (32, 34, 36) and
   that the construction kit includes the self-supporting, sheet-type covering components (456, 458, 460) which can be fixed to the load-bearing components (38, 438, 439) and can be laid between these unsupported, parallel to ridge and eaves, the said covering components being supported solely via the load-bearing components.
2. Construction kit according to claim 1,
   characterised in that
   this additionally has a ridge purlin component (32), which can be laid in the ridge region parallel to the ridge, on which the sheet-type load-bearing components (38) can be fixed on the ridge side.
3. Construction kit according to claim 1 or 2
   characterised in that
   a purlin component (32, 34, 36, 632) takes the form of a hollow profile.
4. Construction kit according to one of claims 1 to 3,
   characterised in that
   a piece of an eaves purlin (34, 36) is only provided in the region of a load-bearing component (38).
5. Construction kit according to one of claims 1 to 4
   characterised in that
   a gable component (14, 16) has holders (20, 22, 24 and/or 26, 28, 30) at a distance from its edges for the ends of the purlin components (32, 34, 36).
6. Construction kit according to claim 5
   characterised in that
   the holder (20, 22, 24; 26, 28, 30) on the gable component (14 and/or 16) permits a positive-locking connection with the purlin component (32, 34, 36) and takes the form, for example, of a penetration, recess or a mounting fitted on the inner surface of the gable component (14 and/or 16).
7. Construction kit according to one of claims 1 to 6
   characterised in that
   this has at least one sheet-type eaves-covering component (458) and one ridge covering component (456) respectively, which can be laid between the load-bearing components (38, 438, 439), parallel to eaves and ridge.
8. Construction kit according to claim 7,
   characterised in that
   the width of the load-bearing components (438, 439) is dimensioned such that they form a lateral frame for an aperture, the width of which corresponds to a grid scale so that sheet-type covering components (456, 458, 460) with a uniform width can be installed.
9. Construction kit according to claim 8,
   characterised in that
   the sheet-type covering component (460) has a roof system component, for example a solar module, a dormer window (464), a roof window or a penetration for a chimney.
10. Construction kit according to one of claims 1 to 9,
    characterised in that
    the gable component is designed with a triangular front view as a hip roof component (214) for a hip roof and has a bevel corresponding to the inclination of the hip on its underside, so that it is possible to lay it flat against the roof and/or against the wall (242) of the building (240).
11. Construction kit according to claim 10
    characterised in that
    this has triangular-shaped, sheet-type, first adapted covering components (254), cut to size for a hip roof.
12. Construction kit according to claims 1 to 9
    characterised in that
    the gable component is designed as a half-hip gable component (314) with an approximately triangular front view with a tip angled towards the ridge for a half-hip roof, and that the construction kit has trapezium-shaped second adapted covering components (354), each of which fill the area between the edge load-bearing component and the half-hip gable component.
13. Construction kit according to one of claims 1 to 12,
    characterised in that
    the latter's sheet-type components (438, 439, 456, 458, 460) are provided with projections on the upper side running parallel to the ridge, which are arranged at normal roof batten intervals from each other.
14. Construction kit according to one of claims 1 to 12,
    characterised in that
    the latter's sheet-shaped components (438, 439, 456, 458, 460) have profiles on their upper side corresponding to the shape of pantiles.
15. Construction kit according to one of claims 1 to 14,
    characterised in that
    the latter's sheet-shaped components (538; 558) have self-supporting covering layers (566, 568 and/or 588, 590) and a sound- and/or heat-insulating layer (533, 535) in between.

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