A twin sheet core structure made up of two sheets of plastic that have been thermoformed to define arrays of cavities having floors opening to surfaces defined by orthogonally intersecting ribs wherein the sheets are fused together to form a single structure with hollow areas between sheets.

The invention relates to a prefabricated panel for light-weight one-way joist slabs of the compound section type, comprising an upper contributing layer, a lower contributing layer having a series of upper peaks and troughs and shear transfer bolts which secure the upper contributing sheet to the upper peaks of the lower contributing sheet, and shear bolts or pins which secure the lower contributing layers to the slab framework beam. The functioning of the upper and lower contributing layers as a compound section permits the production of a highly efficient system for supporting the requirements of bending and shear forces, having a low unitary weight in comparison to the existing systems, which involves lower loads in terms of its own weight and a reduction in the inertia effects during seismic events, while constituting a less bulky structural solution, having fewer ground requirements and being much more economical, thereby reducing the time and input, labour and equipment required for the production and assembly thereof.

The invention relates to a prefabricated panel for light-weight one-way joist slabs of the compound section type, comprising an upper contributing layer, a lower contributing layer having a series of upper peaks and troughs and shear transfer bolts which secure the upper contributing sheet to the upper peaks of the lower contributing sheet, and shear bolts or pins which secure the lower contributing layers to the slab framework beam. The functioning of the upper and lower contributing layers as a compound section permits the production of a highly efficient system for supporting the requirements of bending and shear forces, having a low unitary weight in comparison to the existing systems, which involves lower loads in terms of its own weight and a reduction in the inertia effects during seismic events, while constituting a less bulky structural solution, having fewer ground requirements and being much more economical, thereby reducing the time and input, labour and equipment required for the production and assembly thereof.

An uncoupling mat includes a flexible layer made of a film-like plastic with structuring that defines indentations provided with undercuts on a first, top side and a series of annular cavities formed on an opposite second, bottom side. The annular cavities on the bottom side each define a recess on the first side. The indentations have a cross-section adapted to receive a heating cable therein such that the cable can be held in position by the indentations. A plurality of weakening zones each extends between two rows of annular cavities in a straight line to allow the plastic layer to move substantially transversely to the direction of extension of the weakening zones.

Embodiments of the invention relate to structural panel systems, and in particular in-frame fluted panel systems. The in-frame fluted panel systems allow for improved strength and/or ductility within a reduced wall thickness by installing the fluted panels within the framing of the support members in various configurations. The in-frame fluted panel systems further allows for easier construction and lower costs than conventional systems that have fluted panels located outside of the support members.

A wall/roof panel includes (a) a façade that has (i) an outer surface that defines a front surface of the panel and (ii) a rear surface and (b) a structural element connected to and supporting the façade.

A structural element (10) for forming a panel, with an upper plane (12) and lower plane (14) which are parallel and deformed along their plane at intervals by pods (16) which extrude toward the opposing plane with their internal faces mating to one another.

Core element for sandwich elements, wherein the core element has at least two hemisphere panels which are combined with one another, wherein each hemisphere panel has, between planar portions, and spaced apart from one another, uniform hemispherical elevations, wherein the two or in each case two hemisphere panels face one another by way of their elevations, wherein, with two or in each case two hemisphere panels combined with one another, the elevations of one hemisphere panel each bear with their apexes or apex surfaces against a planar portion of the other hemisphere panel, and wherein two hemisphere panels are connected to one another by virtue of the elevations being connected, in the region of their apexes or apex surfaces, to the planar portion of the other or another hemisphere panel against which they bear. Moreover, the invention also relates to the use of a core element and to a method for producing a core element.

Core element for sandwich elements, wherein the core element has at least two hemisphere panels which are combined with one another, wherein each hemisphere panel has, between planar portions, and spaced apart from one another, uniform hemispherical elevations, wherein the two or in each case two hemisphere panels face one another by way of their elevations, wherein, with two or in each case two hemisphere panels combined with one another, the elevations of one hemisphere panel each bear with their apexes or apex surfaces against a planar portion of the other hemisphere panel, and wherein two hemisphere panels are connected to one another by virtue of the elevations being connected, in the region of their apexes or apex surfaces, to the planar portion of the other or another hemisphere panel against which they bear. Moreover, the invention also relates to the use of a core element and to a method for producing a core element.

A building panel is constructed of a corrugated material. The panel can be folded into a U-shaped configuration. Successive folded panels can be coupled together using complementary shaped corrugations to fix panels in position relative to each other. Shaped connectors can be used to connect building panels in one plane to building panels in another plane.