WO2017067836A1

WO2017067836A1 - Building construction and building construction element for such building construction

Info

Publication number: WO2017067836A1
Application number: PCT/EP2016/074508
Authority: WO
Inventors: Daniel Lepori; Dario Manodoro; Davide CAPURSO; Federico SPINELLI
Original assignee: Designergy Sa
Priority date: 2015-10-23
Filing date: 2016-10-12
Publication date: 2017-04-27

Abstract

A building construction comprises at least two square shaped building construction elements (3a). Each of these elements comprises a plate (5a) with at least a layer of thermally insulating material. The construction elements further comprise a PV converter module (11a). The construction elements (3a) are mounted on a support structure (13a) side by side along neighboring parts. There are provided inlays (17a, 47a) between neighboring construction elements and/or such construction element and the support structure, which has a material compressibility which is larger than material compressibility of members upon which the inlays (47a), (17a) rest.

Description

Building Construction and Building Construction Element for such Building Construction

The present invention departs from building constructions which comprise at least two substantially square shaped building construction elements. Each building construction element comprises a plate which comprises at least one plate layer of a thermally insulating material and which has two mutually parallel extended plate surfaces and a border surface one dimension thereof according to the thickness extent of the plate. Each of the at least two substantially squared shaped building construction elements further comprises a substantially square shaped

photovoltaic converter module (PV module) which is mounted along and parallel to one of the plate surfaces. In such building construction the substantially square shaped building construction elements are mounted on a support structured along one of the plate surfaces, side by side along neighbouring parts of respective ones of the border surfaces .

When constructing such a building construction one must consider the dimensional tolerances of the involved

building construction elements. Thereby, the building construction elements should be combined on the support structure tightly and flush side by side so as to result in a substantially continuous structure of thermal isolation and should as well be provided on the support structure in a manner that the PV modules are residing substantially in one plane.

Thereby, it is predominantly the addressed plate, which comprises at least one plate layer of a thermally

insulating material, which is thick e.g. between 5 and 30 cm thick, which is subjected to significant dimensional tolerances predominantly with respect to the plate extent along the two dimensions in the extended plate surfaces but also with respect to thickness of the plate.

It is an object of the present invention to provide an improved building construction.

This object is resolved at a building construction as addressed above in which at, at least one of the building construction elements, there is provided at least one specifically structured area along a resting surface. Such a resting surface is at least a part of the neighbouring part of the border surface of at least one of the involved building construction elements and/or at least a part of one plate surface of the one building construction element. Along the addressed area there is provided a member with a member surface which extends along the resting surface and at least one inlay on the addressed member surface. The member has thereby a first material compressibility in the direction perpendicular to the member surface. On the other hand the addressed inlay has a second material compressibility at least in the addressed direction. The second compressibility i.e. of the inlay material is thereby substantially larger than the first

compressibility .

Thus, there is realized by the addressed inlay a zone between the neighbouring construction elements or between at least one of the construction elements and the support structure which is resilient, i.e. compressible so as to compensate for mutual dimensional variations between the involved constructional elements. Due to the fact, that the addressed second compressibility of the material of the inlay on the member is substantially larger, than the compressibility of a member in the addressed area, the addressed compensation is realised by resilient action of the inlay.

In one embodiment of the building construction according to the invention, the member of higher compressibility in the addressed area is, in one or more than one of the plate layers of the plate of the address one building

construction element, thereby preferably at least including the thermally isolating plate layer.

Thus, in this embodiment, which may be combined with any of the embodiments still to be addresses unless in

contradiction, the inlay is provided directly in contact with the address at least one plate layer. In an embodiment according to the invention which may be combined with any pre-addressed embodiment or embodiments still to be addresses unless in contradiction the resting surface is at least a part of the neighbouring part of the border surface of the addresses one construction element and the addressed member is a rigid reinforcement element which bridges the border surface in the addressed area. Such rigid reinforcement element may be e.g. of a hard plastic material or of a metal and is advantageously provided especially if the plate of the addressed one building construction element is two- or multi-layered thereby firmly holding such multi-layered structures together .

Thus, in this embodiment the inlay resides in fact directly on the outer surface of such reinforcement element, which has a high material compressibility and bridges any gap to the second i.e. neighbouring construction element, which might be due to the dimensional differences of the involved at least two building construction elements. Thereby, this embodiment may clearly be combined with the embodiment just addressed above, so that one inlay is provided directly at at least one of the plate layers. The just addressed member, i.e. the reinforcement element resides on the first inlay and a second inlay is provided directly on the outer surface of this member. Thereby a twin resilient inlay arrangement is realised.

In a further embodiment of the invention which may be combined with any of the preaddressed embodiments and embodiments still to be addressed unless in contradiction, the member with the member surface, which extends along the resting surface in the addresses area, is a rigid beam e.g. of concrete or of a steel, of wood or of a hard plastic material, which beam extends substantially parallel to the plate surfaces of the one constructional element addressed. Thereby, in one variant of this embodiment the beam extends along and adjacent the neighbouring parts of the at least two building construction elements involved.

Thus, and as the member is a beam the inlay is either solely provided at the outer surface of the beam pointing away from the plate of the addresses one building

construction element or, if combined with an embodiment as addressed above wherein also at least one plate layer acts as the member, there is provided a first inlay between the addresses at least one plate layer and the beam and a second inlay between the beam and the neighbouring

construction element.

Because the resting surface may also be at least a part of one plate surface of the one building construction element considered, as an example, the addressed beam may also be covered by an inlay as addressed, which allows for

compensation of thickness variations between the involved construction elements. It must be emphasised, that at one building construction the different arrangements of inlays may be provided separately but in combination according to the respective needs for dimensional compensation and the involved materials .

In one embodiment of the invention, which may be combined with any of the preaddressed embodiments or embodiments still to be addresses unless in contradiction, the plate layer of thermally insulating material, which, as was addresses, may also act as the member, is of at least one of the following materials:

- rock wool / mineral wool;

- polyurethane, PUR;

- polyisocyanurat , PIR;

- polyethylene terephthalate, PET;

- expanded perlite;

- glass wool;

- polystyrene, PS, expanded polystyrene, EPS, extruded polystyrene, XPS;

- wood derived foam;

- cellular glass;

- animal fibres e.g. sheep wool; or is a vacuum insulated panel. In one embodiment and depending on the material selected as the member material which may be one of the just addressed materials, if the plate layer of thermally insulating material acts as at least a part of the member, the at least one inlay is of at least one of the following

materials :

- rock wool / mineral wool;

- glass wool;

- polyurethane foam;

- cellular glass;

- animal fibres e.g. sheep wool;

- a resilient metal structure, preferably a resilient aluminum structure.

In one embodiment of the building construction according to the invention, which may be combined with any of the preaddressed embodiments and embodiments still to be addressed, the material density of the inlay is smaller, thereby substantially smaller than the material density of the addressed member. Although respective compressibility of the inlay might only be necessary in one dimensional direction, selecting the addressed material densities and thus respective compressibility in all three spacial directions, simplifies material selection especially for the inlay material significantly. In an embodiment of the building construction according to the invention, which may be combined with any preaddressed embodiments and embodiments still to be addresses unless in contradiction, the member is a rigid beam, which extends substantially parallel to the plate surfaces of the

addressed one construction element and the beam is a part of the addressed one building construction element. Thus, such beam, which may contribute to the overall support structure of the building construction is an integrate part of the addressed one building construction element and is applied therefor e.g. when manufacturing this building construction element. In another embodiment, in which the addressed member is a rigid beam, which extends

substantially parallel to the plate surfaces of the one building construction element considered, the addressed beam is a part of the support structure. Thus in such case, the addressed beam is provided when preparing the support structure prior to applying the building construction elements thereto.

According to a further embodiment of the building

construction according to the invention, which may be combined with any of the preaddressed embodiments or embodiments still to be addresses unless in contradiction, the at least one inlay is either a part of i.e. integral with the one building construction element and is thus applied e.g. when manufacturing the addressed building construction element. Alternatively the inlay is a separate part, which is applied when, at the building construction, the respective building construction elements are mounted.

In one embodiment of the building construction according to the present invention which may be combined with any of the preaddressed embodiments or embodiments still to be

addressed unless in contradiction, the plate of the at least one of the involved construction elements comprises a covering plate facing towards the PV-module, which covering plate is substantially thinner than the totality of the plate layer or plate layers and is preferably of a metal. The PV-module is mounted directly on the addressed covering plate or via spacers defining for an air gap between the covering plate and the PV module.

In a variant of the just addressed embodiment in which both construction elements as involved comprise the addressed covering plate, the covering plates of the building

construction elements are mutually hooked at and preferably along the neighbouring part.

In one variant of the just addressed embodiment, the covering plates are hooked by means of a trapezoidal part of one of the addressed covering plates, projecting out of plane of the one covering plate and a respective

trapezoidal part of the other of the covering plates projecting out of plane of the other covering plate. Thus, the mutually hooking members may be easily realised at the respective covering plates by bending.

In an embodiment of building construction according to the invention which may be combined with any of the

preaddressed embodiments and embodiments still to be addressed unless in contradiction, the plate of at least one of the involved building construction elements

comprises a stabilising plate, which is substantially thinner than the totality of the plate. Such stabilising plate is in a good embodiment made of a metal or of a reinforced plastic material. The stabilising plate extends along and parallel to the plate surfaces and is either embedded into the plate or extends along that plate

surfaces, which faces away from the PV-module. The

stabilising plate has in a further good embodiment at least one L-shaped edge part with a first part, which extends towards the PV-module and with a subsequent part which is substantially parallel to the PV-module. Such stabilising plate on one hand allows to mechanically stabilise the overall plate. If the at least one edge part is L-shaped as addressed, that part of this profile, which is

substantially parallel to the PV-module and points outwards form the plate, improves mountability of the entire

building construction element to the support structure as e.g. to a beam of such support structure.

In a further good embodiment both building construction elements involved are provided with such stabilising plate, which may mutually be hooked together, similarly to hooking the covering plates together as was addressed above.

In an embodiment of the building construction according to the present invention, which may be combined with any of the preaddressed embodiments, the building construction is a roof building construction.

To now, we have addressed the building construction

according to the present invention thereby especially focussing on the construction of one of the involved building construction elements and its cooperation with a second building construction element. Thereby, such

primarily addressed building construction element per se is considered as an invention.

Thus, the present invention is also directed to a building construction element for a building construction according to the invention and possibly according to the specific embodiments of such building construction element as addressed in context with the building construction.

A building construction element according to the invention comprises the addressed substantially square shaped

building construction element, which comprises the plate. The plate comprises at least one plate layer of a thermally insulating material. The plate has two mutually parallel extended plate surfaces and a border surface. The building construction element further comprises the substantially square shaped PV converter module, which is mounted or mountable along and parallel to the one of the plate surfaces .

The building construction element comprises the at least one area along a resting surface. Latter is at least a part of one plate surface of the building construction element. At the addressed building construction element according to the invention there is provided in the addressed area the member with a member surface extending along the resting surface and the at least one inlay on the member surface.

At the addressed building construction element the member has a first material compressibility in the direction perpendicular to the member surface and the inlay has a second material compressibility in the addresses direction, which is substantially larger than the first

compressibility .

The invention as of the building construction and a building construction element will now be described in more details and by means of examples with the help of figures. The figures show:

Figure 1: A perspective view of a building construction

according to the invention with at least two building construction elements and with specific areas according to the present invention of the construction and/or of the respective construction element.

Figure 2: Simplified and schematically one embodiment of the structure in area A of Fig. 1.

Figures 3a to 3c: Three variants of the embodiment

generically addressed in Fig. 2,

schematically and simplified.

Figure 4 : In a representation in analogy to those of the

Figs. 2 to 3c a variant of the embodiment as depicted in Fig. 3b.

Figures 5a to 5c: Three further variants simplified and schematically of realising the

embodiment according to the Figs. 3a to 3c . Figures 6a to 6c: Three further variants of realising the embodiments according to the Fig. 3a to 3c .

Figure 7: A further embodiment of realising the structure in area A as of Fig. 1 of the building construction or at a building construction element according to the invention.

Figure 8: Still schematically and still simplified the

structure as realised by the present invention in area B of Fig . 1.

Figures 9a to 9c: Three variants of realising the generic embodiment as of Fig. 8.

Figure 10: One embodiment which departs from the embodiment of Fig. 9a of realising the structure in area B as of Fig. 1.

Figures 11a to 11c: Further variants of realising the

structure as inventively applied to area B of Fig . 1.

Figure 12: In a cross-sectional, simplified and schematic representation, a further embodiment of the building construction according to the invention . Figure 13: Departing from a representation according to

Fig. 12 a further embodiment of the building construction or of a respective one of the building construction elements.

Figure 14: Still in a representation in analogy to that of

Figs. 12 or 13 a further embodiment of the building construction and respectively of a building construction element as of the invention .

Figure 15: In a more detailed cross-sectional

representation, still simplified one building construction element which combines different features of the present invention.

Fig. 1 shows in a perspective view, schematically and simplified a part of a building construction according to the present invention including two building construction elements at least one thereof according to the invention. Thus, building construction 1 comprises at least two building construction elements 3a and 3b. Each building construction element is substantially square shaped and comprises a plate 5a, 5b. The plate 5a and/or 5b may respectively be of one single plate layer or may be as shown at plate 5b two or multiple layered. The plate 5a and 5b may be differently layered but will normally be equally layered . The plates 5a, 5b of each building construction element 3a and 3b have two mutually parallel extended plate surfaces 7ao, 7au and, respectively, 7bo, 7bu. Each of the plates 5a and 5b has further a surrounding border surface 9a and 9b. Each of the construction elements 3a and 3b further

comprises a PV-module 11a and lib mounted along and

parallel to the respective one of the plate surfaces 7ao, 7bo . According to Fig. 1, PV module 11a is mounted along and parallel to the plate surface 7ao whereas PV converter module lib is mounted along and parallel to plate surface 7bo .

The substantially square shaped building construction elements 3a and 3b are mounted on a support structure 13 along the respective plate surfaces 7au, 7bu. They are mounted on the support structure 13 side by side along neighbouring parts 9an, 9bn of the respective border surfaces 9a, 9b. At al least one of the building

construction elements 3a, 3b there is provided at least one area shown schematically in Fig. 1 by an area A and an area B. Both areas A and B are provided along a resting surface. The resting surface at area A is a surface of the

neighbouring part 9an of the border surface 9a of the one building construction element 3a, whereas the resting surface at area B is a part of the plate surface 7au of the addressed one construction element 3a. We will now describe the structure of the building construction in such areas A and B localised in Fig. 1. The structure of area A, with respect to one of the

building construction elements, e.g. 3a, is generally shown in Fig. 2. In the area A along the resting surface, which is here at least a part of the neighbouring part 9an of the border surface 9a at building construction element 3a, there is provided, in the area A, which may extend all along the neighbouring part 9an or just along one or more than one parts thereof, a member 15 which has a member surface 15a or 15b, which extends along the resting

surface, realised by at least a part of the neighbouring part 9an. As may be seen in Fig. 2 the member 15 most generically has two such member surfaces 15a as well 15b, which extend along the resting surface along surface 9an. In the area A there is further provided on at least one of the member surfaces 15a and/or 15b an inlay 17a, 17b respectively. The member 15 has a material compressibility in direction D perpendicular to the member surface 15a and/or 15b, which is substantially larger then such

compressibility in the addressed direction D of the

material of the one or of both inlays 17a, 17b.

Thus, within the frame of the generic approach according to Fig. 2 with respect to realisation of the area A according to Fig. 1, Figs. 3a to 3c, show three possibilities.

According to Fig. 3a there is provided an inlay 17a between and directly on the plate 5a of building construction element 3a and the member 15. According to Fig. 3b there is provided an inlay 17b on the outer member surface 15b of member 15 which latter resides directly on the resting surface according to at least a part of the neighbouring part 9an according to Fig. 1.

According to Fig. 3a, the member surface, which extends along the resting surface and where upon inlay 17a is applied in member surface 15b, whereas, according to Fig. 3b, such member surface where upon inlay 17b rests is member surface 15a.

According to Fig. 3c an inlay 17a resides on member surface 15b and a second inlay 17b resides on member surface 15a, both extending along the resting surface, which is realised by at least a part of the neighbouring part 9an of the border surface 9a as of Fig. 1.

Up to now we have not addresses specifically how member 15 is realised.

As will be specifically explained later on, member 15 may be any type of material member as long as its material compressibility in the direction perpendicular to the member surface is substantially larger than the

compressibility of the one or of the two inlays applied.

One specific embodiment of realising member 15 departs from the embodiment as generically shown in Fig. 3b. Although also in this embodiment of Fig. 3b the member 15 may be a part distinct from plate 5a of the one building construction element 3a, such member 15 may directly and in a good embodiment be realised by one or more than one plate layers of plate 5a. This results in an embodiment as schematically shown in Fig. 4 where the plate 5a or at least one or more than one layer thereof, if plate 5a is layered, is exploited as the member 15. The inlay 17b according to Fig. 3b resides directly on plate 5a and a part of the neighbouring part 9an of the border surface 9 of plate 5a - as the resting surface - becomes also the member surface.

In one embodiment of the more generic embodiment according to Fig. 3a to 3c the member 15 is realised by a rigid reinforcement element 25 which bridges a neighbouring part 9an of the border surface 9a of plate 5a according to Fig. 1. Such an embodiment in the variant according to Fig. 3a is shown in Fig. 5a, a variant according to Fig. 3b in Fig. 5b and the variant according to Fig. 3c in Fig. 5c.

According to Fig. 5a, the reinforcement element 25, for instance of a metal or hard, possibly reinforced plastic, which bridges the border surface of plate 5a in the area A as of Fig. 1. One or more than one of such rigid

reinforcement elements 25 may be provided along the

neighbouring part 9an of the border surface 9a of plate 5a. According to the generic embodiment of Fig. 3a there is provided the inlay 17a between the surface 9an, the resting surface, and the reinforcement element 25 with its member surface 25b. According to the embodiment according to Fig. 5b the reinforcement element 25 is directly applied to the neighbouring part 9an of the border surface of plate 5a according to the generic embodiment of Fig. 3b and the inlay 17b is applied on the outer member surface 25a.

Fig. 5c shows and embodiment with the reinforcement element 25 in an embodiment as generically shown in Fig. 3c. It is in fact a combination of both embodiments according to Fig. 5a and Fig. 5b.

A further good embodiment will now be described by means of the Fig. 6a to 6c which respectively depart from variants as more generically discussed in context with the Fig. 3a to 3c. The element 15 as of the Fig. 3a to 3c is here realised by means of a beam 35 which extends with an eye on Fig. 1, all along and adjacent the neighbouring part 9an, 9bn of the respective building construction elements 3a and 3b. The beam 35 may have a height, which is smaller than the thickness extent of plate 5a as shown in ridged line in the Fig. 6a to 6c or may be of a height, which is equal to the thickness of such plate 5a as shown in Fig. 6a in dash line .

According to the generic approach of Fig. 3a, in the variant of Fig. 6a, there is provided the inlay 17a all along the neighbouring part 9an and all along beam 35, its member surface 35b. As also shown in Fig. 6a in dash line, the inlay 17a may be applied irrespective of the height of beam 35 along the entire thickness extent of plate 5a or along only a part of this extent.

With an eye on Fig. 3b and Fig. 3c the skilled artisan clearly understands the variants according to Fig. 6b and Fig. 6c whereat the element 15 of the Fig. 3 is realised by a beam 35 as addresses above. According to Fig. 7, the plate 5a overlaps beam 35 completely or, as shown in Fig. 7, to a part. Fig. 7, which is an embodiment principally according to Fig. 3c or Fig. 6c, shows an inlay 17b and an inlay 17a and, additionally, an inlay 17c which latter extends substantial parallel to the plate surfaces 7ao, 7au as of Fig. 1. The beam 35 may be provided partly or

completely overlapped by plate 5a in any of the variants according to Fig. 6a to Fig. 6c.

With an eye on all the Fig. 2 to 7, the respective inlays and members may be part of the one building construction element 5a as addressed. For an instance, with an eye on the Fig. 5 or 6, the reinforcement elements 25 and the beam 35 as well as the one or the other inlays 17a, 17b, 17c may be part of the building construction element 3a.

Alternatively, the element 15 as especially beam 35

possibly also reinforcement element 25 may be applied on the place of construction of the building construction. Thereby, beam 35 may be part of the support structure 13 as of Fig. 1. If the inlay and/or member 15 is a part of one building construction element, it is applied at during manufacturing of such element. Up to now, we have focussed on the structure realisation in the area A according to the present invention and as addresses in Fig. 1. The respectively provided inlays have thereby primarily the task of compensating for dimensional variations of neighbouring building construction elements as of 3a and 3b of Fig. 1 in a direction perpendicular to the member surface and thereby parallel to the plate surfaces 7ao, 7au as addresses by direction D in Fig. 2, or the x-coordinate in Fig. 1.

Turning now to the structure in area B of Fig. 1, which may be provided instead of a respective structure in area A but, in a good embodiment additionally thereto. The

structure in area B has primarily the object of

compensating for variations of overall thickness direction Db in Fig. 1 of the respective building construction elements or for compensating variations in this direction Db of the support surface at the supporting structure 13.

In analogy to Fig. 2 which shows a generic structure at the area A of Fig. 1, Fig. 8 shows the respective structure at area B.

The resting surface according to the embodiment of Fig. 8 is at least a part of the plate surface 7au of plate 5a of the building construction element 3a. In the addressed area B generically a member 45 with a member surface 45b or 45a extends along the resting surface of plate surface 7au. On at least one of the member surfaces 45a and/or 45b there is provided an inlay in Fig. 8 respectively inlay 47a and/or inlay 47b with a material compressibility in direction Db which is substantially larger than the material

compressibility of the material of member 45, in this Db direction, as shown in Fig. 8, the inlay and member

structure 47, 45 resides upon a support surface of support structure 13.

Fig. 9a to Fig. 9c show different variants of the generic embodiment of Fig. 8 in analogy to Figs. 3a to 3c with respect to the structure in area A.

Thus, according to the variant of Fig. 9a, the inlay 47b is applied to the one member surface 45a and member 45 is directly applied to at least a part of the plate surface 7au acting as the resting surface.

According to the variant of Fig. 9b, the inlay 47a is applied between the member surface 45b and along the resting surface which is again at least a part of the plate surface 7au.

According to the variant of Fig. 9c, which is in fact a combination of the variants according to Fig. 9a and 9b, an inlay 47a as well as an inlay 47b are provided. Here, both member surfaces 45a and 45b are exploited where along one of the inlays is applied. With an eye on Fig. 9a one may see that, as a member 45, the plate 5a may directly be exploited which results, in analogy to the embodiment of Fig. 4, in variant according to Fig. 10.

Looking back on the embodiment of Fig. 7, one may see, that with the beam 35 as the upper inlay part 17c acts equally to inlay 47a of the embodiment of Fig. 9b. Thus, the embodiment of Fig. 7 in fact combines a structure as inventively provided for area A with a structure as inventively provided in area B.

In one good embodiment of the embodiments as shown by Fig. 8 to 10 the member 45 is a beam which extends, with an eye on Fig. 1, along one of the building construction elements as of 3a, thereby in the direction x or in the direction y indicated in Fig. 1 or even with directional components in x direction as well as in y direction. In a good embodiment the beam extends only in y direction.

According to Fig. 11a the beam 55 rests along beam surface 55a, according to member surface 45a of Fig. 8, on a support surface of the support structure 13. Inlay 47a is provided along the second beam (member) surface 55b. Both addressed beam surfaces 55a and 55b extend along the resting surface, which is a part of plate surface 7au.

According to the variant of Fig. lib, the beam 55 rests, along the one beam surface 55b, on the plate surface 7au whereas the inlay 47b is applied along beam surface 55a and a support surface of the support structure 13. In the variant according to Fig. 11c both variants according to Fig. 11a and lib are combined.

The beam 55 may be a separate distinct part which may be, as according to the variant of Fig. lib, integral part of the building construction element 3a and is applied, when manufacturing such building construction element. The inlay 47b may thereby also be applied during manufacturing of the building construction element, if beam 55 as well is part and is manufactured with the respective building

construction element. Generically spoken and as may be clearly understood by the skilled artisan, the addressed one or more than one inlay 47 and/or the beam 55 may be applied as a part of the respective building construction element or may be applied at the construction place of the building construction.

If the beam 55 is to be applied at the place of the

construction of the overall building construction it may be a part of the support structure as addressed in Fig. 1 in dash line at reference no. 55.

Back to of Fig. 1, we have addressed there the PV-modules 11a and lib as residing along one of the plate surfaces 7ao and 7bo . Thereby, the PV-modules may be applied directly on the respective plate surfaces 7ao, 7bo or are applied, as schematically shown in Fig. 12 distant form the plate surfaces 7ao, 7bo . Thereby, in a good embodiment the respective plates 5a and 5b comprise a relatively thin covering plate 57a, 57b which is e.g. of a metal or of rigid, reinforced plastic material. By means of an

arrangement of spacer 59 the PV-modules 11a and lib are mounted along the plate surfaces of the plates 5a and 5b which include, as a plate layer, the plates 57a and 57b.

There is formed an air gap between the bottom surface of the respective PV module and the respective plate surface 7ao, 7bo . Please note that in the embodiment according to Fig. 12 and with respect to the structure in area A as of Fig. 1, an embodiment is shown, which accords with the variant depicted in Fig. 4.

In a good embodiment of the embodiment as shown in Fig. 12 and as schematically and simplified shown in Fig. 13, the two covering plates 57a and 57b are hooked together along their parts of their rims and, with an eye on Fig. 1, along the direction y. In a good embodiment of realisation the covering plates are hooked by means of respective

trapezoidal hook parts 61a and 61b along the rims of the plates 57a and 57b.

In a further good embodiment of the one or of both building construction elements involved and as shown in Fig. 14, there is provided between two layers of the plates 5a, 5b or and as shown as the one layer of the respective plate exposed to the support structure 13, a stabilising plate 63a, 63b. Such stabilising plate may be of a metal or of a rigid, reinforced plastic.

Thereby, in further good embodiment and as shown in Fig. 14 in dash line the stabilising plates 63a, 63b are shaped to form an L 64 at least along a part of the neighbouring parts 9an of the border surfaces of the respective plates 5a, 5b.

The inlays as were addressed throughout the description and which have a material compressibility in the respective direction substantially larger than material

compressibility of a respective cooperating member, are in a good embodiment selected a from material, which has a lower material density than the material of the addressed cooperating member. With an eye especially on such inlays along area A of Fig. 1, such reduced material density leads to a further advantage namely that, the inlay may allow in direction from the support structure 13 to the ambient vapour transition.

As was addressed, the plate 5a consists or comprises a plate layer of thermally insulating material, in good embodiments having a thickness between 5 and 30 cm. At least one of the following materials is advantageously used as a material of such thermally isolating layer of the respective plate of the building construction elements 3a, 3b: - rock wool / mineral wool

- polyurethane, PUR;

- polyisocyanurate, PIR;

- polyethylene terephthalate, PET;

- expanded perlite;

- glass wool;

- polystyrene, PS, expanded polystyrene, EPS, extruded polystyrene, XPS;

- wood derived foam;

- cellular glass;

- animal fibres, e.g. sheep wool;

- or such layer may be realised by a vacuum insulated panel .

In dependency of the material of the addressed members which the applied inlays cooperate, such inlays may be at least one of the following materials:

- rock wool / mineral wool

- glass wool;

- polyurethane foam;

- cellular glass;

- animal fibres, e.g. sheep wool;

- or a resting metal structure, as of aluminum In Fig. 15 there is schematically shown in a cross- sectional view, a building construction element 3a as was addressed to now. We will refer to the different parts of this building construction element 3a by the same reference numbers as were used to now to facilitate overview.

The embodiment of Fig. 15 combines different features which were addressed to now. The PV-module 11a is mounted to an arrangement of spacers 59 with respect to the covering plate 57b according to Fig. 12. The covering plate 57b may be hooked to the respective covering plates of neighbouring building construction elements. Thus, and according to Fig. 13 the covering plate 57b is equipped along respective rims with trapezoidal hooking parts 61a and 61b. The plate 5a is shown as a multi-layered plate wherein, as shown in dash line, one layer may even be completely countersunk in the remaining plate material. A rigid reinforcement element 25, which bridges the border surface of plate 5a, is applied. A beam 35 is provided in analogy to Fig. 6a with the

respective inlay 17a. There is further provided a beam 55 according to the embodiment of Fig. 11a with the inlay 47a.

With an eye on Fig. 15 there becomes apparent, that there is provided, on the bottom surface of plate 5a

trapezoidally an additional plate 13a. In good embodiments such a plate 13a, which is shown in Fig. 15 as structured, may be the plate 63 as shown in Fig. 14. Such plate 13a may generically be a plate structured or not structured, a plate of a metallic or of hard reinforced plastic material, a plate of wood or a combination of such materials. The plate 13a may be provided when manufacturing the building construction elements 3a and 3b or may be provided, when assembling the building construction. It may extend over one building construction element as in fact shown in Fig. 15 or in Fig. 14 or it may extend along more than one building construction element, this especially if applied when assembling on the construction place the building construction with at least two building construction elements. The object of providing such plate 13a or 63 is, on one hand, to provide a stable support for a material of the bottom layer of plate 5a, if such material is per se not form stable, which may be the case e.g. for some wools as the material. The plate 13a, 63 on the other hand provides for a defined plane bottom surface with respect to support structure 13. A further construction element neighbouring the construction element 3a of Fig. 15 is addresses in Fig. 15 in dash line as 3b. Please note the hooking of the trapezoidal parts 61a and 61b. There is further schematically shown with reference no. 17 mutual fixation of construction element 3a and 3b to beam 35 by screwing .

Claims

1. A building construction comprising:

- at least two substantially square shaped building construction elements, each building construction element comprising

a plate comprising at least one plate layer of a thermally insulating material, said plate having two mutually parallel, extended plate surfaces and border surface,

a substantially square shaped PV converter module mounted along and parallel to one of said plate surfaces ,

- said substantially square shaped building

construction elements being mounted on a support structure along one of said plate surfaces, side by side along neighboring parts of respective ones of said border surfaces,

- at at least one of said building construction

elements ,

- at least one area along a resting surface being of the neighboring part of the border surface of said at least one building construction element and /or of the one plate surface of said one building construction element and along said area: a member with a member-surface extending along said resting surface;

- at least one inlay on said member-surface;

said member having a first material

compressibility in the direction perpendicular to said member surface;

said inlay having a second material

compressibility in said at least one direction; said second compressibility being substantially larger than said first compressibility.

2. The building construction of claim 1 wherein said member is at least one plate layer of said plate of said one building construction element, preferably at least including said thermally isolating plate layer.

3. The building construction of claim 1 or 2 wherein said resting surface is of the neighboring part of the border surface and said member is a rigid reinforcement element bridging said border surface in said area.

4. The building construction of one of claims 1 to 3 wherein said member is a rigid beam extending substantially parallel to said plate surfaces.

5. The building construction of claim 4 wherein said beam extends along and adjacent said neighboring parts.

6. The building construction of one of claims 1 to 5 wherein said plate layer of thermally insulating material is of at least one of the following materials:

- Rock wool/mineral wool;

- Polyurethane, PUR;

- Polyisocyanurate, PIR;

- Polyethylene terephthalate, PET;

- Expanded perlite;

- Glass wool;

- Polystyrene, PS, Expanded polystyrene, EPS, Extruded polystyrene, XPS;

- Wood-derived foam;

- Cellular glass;

- Animal fibers as e.g. sheep wool;

or, is a vacuum insulated panel.

7. The building construction of one of claims 1 to 6 wherein said at least one inlay is of at least one of the following materials:

- Rock wool/mineral wool;

- Glass wool;

- Polyurethane foam;

- Cellular glass;

- Animal fibers as e.g. sheep wool.

A resilient metal structure, preferably a resilient aluminum structure.

8. The building construction of one of claims 1 to 7 wherein the material density of said inlay is substantially smaller than the material density of said member.

9. The building construction of one of claims 1 to 8 wherein said member is a rigid beam extending substantially parallel to said plate surfaces, said beam is a part of said one building construction element.

10. The building construction of one of claims 1 to 8 wherein said member is a rigid beam extending substantially parallel to said plate surfaces and said beam is a part of said support structure.

11. The building construction of one of claims 1 to 10 wherein said at least one inlay is a part of said one building construction element or is a separate part.

12. The building construction of one of claims 1 to 11 said plate comprising a covering plate layer, substantially thinner than the totality of said plate and preferably of a metal or of a reinforced plastic material, said PV module being mounted to said covering plate directly or via spacers defining for an air gap between said covering plate and said PV module.

13. The building construction of claim 12 wherein both construction elements comprise said covering plate said covering plates of said building construction elements being mutually hooked at, preferably along said neighboring parts .

14. The building construction of claim 13 wherein said covering plates are hooked together by means of a

trapezoidal part of one of said covering plates projecting out of plane of said one covering plate and a respective trapezoidal part of the other of said covering plates projecting out of plane of said other covering plate.

15. The building construction of one of claims 1 to 14, said plate of at least one of said building construction elements comprising a stabilizing plate, substantially thinner than the totality of said plate, preferably of a metal or of a reinforced plastic material, said stabilizing plate extending along and parallel to said plate surfaces, embedded in said plate or along the plate surface facing away from said PV module, preferably said stabilizing plate having at least one L shaped edge part with a first part extending towards said PV module and with a subsequent part substantially parallel to said PV module and further preferably stabilizing plates of both of said building construction elements being hooked together.

16. The building construction of one of claims 1 to 15 being a roof building construction.

17. A building construction element for a building

construction according to one of claims 1 to 16 comprising

- said substantially square shaped building

construction element, comprising

- said plate comprising at least one plate layer of a thermally insulating material , said plate having two mutually parallel, extended plate surfaces and border surface,

- said substantially square shaped PV converter module mounted or mountable along and parallel to one of said plate surfaces,

- said at least one area along a resting surface of the border surface of said building construction element and /or of the one plate surface of said building construction element and along said area:

- a member with a member-surface extending along said resting surface

- at least one inlay on said member-surface

- said member having a first material compressibility in direction perpendicular to said member surface;

- said inlay having a second material compressibility in said direction;

- said second compressibility being substantially larger than said first compressibility.

18. The building construction element of claim 17 according to the one building construction element of the building construction of one of claims 2 to 16.