Facade composite panel element

Claim 2

A facade-forming structural element, comprising an inner slab, an outer slab spaced from said inner slab, at least one truss structure interconnecting said slabs, said truss structure having longitudinally extending elements respectively connected to said slabs and a plurality of diagonal elements inclined to and secured to said longitudinally extending elements and spanning said slabs, a cast-concrete core received between said slabs and embedding said diagonal strut elements of said truss at least between said elements, a thermal and acousticAl insulating layer of polyurethane foam interposed between said core and said outer slab; and an insulating sheath surrounding each of said diagonal strut elements and individual thereto, each sheath extending from within said cast-concrete core and terminating in said outer slab.

Claim 3

The facade-forming structure defined in claim 1, further comprising a seal along an edge of said outer slab for sealing a gap between the outer slab and an adjacent outer slab of an adjoining structural element.

Claim 4

The facade-forming structure defined in claim 2, wherein said seal is a strip of foam rubber.

Claim 5

The facade-forming structure defined in claim 1 wherein said insulating sheaths reach from within said outer slab to substantially the middle of said core.

Claim 6

The facade-forming structure defined in claim 4 wherein said insulating sheaths are composed of a thermoplastic synthetic resin.

Claim 7

The facade-forming structure defined in claim 5 wherein said truss is generally planar and comprises an inner reinforcing bar embedded in said inner slab and forming a respective one of said longitudinally extending elements, and an outer reinforcing bar coplanar with said inner reinforcing bar and embedded in said outer slab, said outer bar forming the other longitudinally extending element, said diagonal strut elements being inclined alternately in opposite directions and being anchored to said bars, said sheaths extending substantially to the junction of the respective strut element with the outer bar, said core being cast in situ from gravel concrete, said outer slab being prefabricated from gravel concrete and having a finished outer surface adapted to form the face of a building, said inner slab being formed with a finished inner surface adapted to form an exposed wall of said building, said insulating layer being composed of foamed polyurethane and embedding said insulating sheaths therein, said element further comprising a generally flat sealing strip of foam rubber surrounding said outer slab.

Claim 8

The facade-forming structure comprising a plurality of structural elements as defined in claim 6, separated by said sealing strips and defining spaces opening externally between the respective outer slabs, a single core of concrete being provided for said element, said spaces being filled with a sealer.