Abstract: A set of extruded panels is provided for constructing a form-work for concrete. The set includes a plurality of first, second and connecting wall panels. The first wall panels are arranged edge to edge to form a first wall. The second wall panels are arranged edge to edge to form a second wall generally parallel to the first wall. The connecting wall panels are arranged to span transversely between the first and second walls. Each first wall panel incorporates an outer wall extending between first and second edges of the first wall panel, and an inner wall extending between first and second edges of the first wall panel, the inner wall spaced transversely from the outer wall and located relatively more proximate to the second wall panel. Each first wall panel incorporates a plurality of support walls extending transversely between the outer and inner walls.

Abstract: A set of extruded panels is provided for constructing a form-work for concrete. The set includes a plurality of first, second and connecting wall panels. The first wall panels are arranged edge to edge to form a first wall. The second wall panels are arranged edge to edge to form a second wall generally parallel to the first wall. The connecting wall panels are arranged to span transversely between the first and second walls. Each first wall panel incorporates an outer wall extending between first and second edges of the first wall panel, and an inner wall extending between first and second edges of the first wall panel, the inner wall spaced transversely from the outer wall and located relatively more proximate to the second wall panel. Each first wall panel incorporates a plurality of support walls extending transversely between the outer and inner walls.

Abstract: A set of extruded panels is provided which can be assembled on site to create a permanent form-work for concrete. The set includes inside and outside extruded side wall panels which are arranged to be connected edge to edge to form inside and outside walls. Longitudinally spaced connecting wall panels span between the inside and outside walls at spaced positions across the width of the walls to hold the walls apart and define a hollow interior therebetween including a plurality of interconnected cells with a plurality of holes for communication of concrete and reinforcing bars between each cell and the next. Each connecting wall panel has T-shaped connectors at each edge for attachment to corresponding C-shaped receptacles on the side wall panels. Rigid foam insulation is inserted at the outside wall.

Abstract: A set of extruded panels is provided which can be assembled on site to create a permanent form-work for concrete. The set includes inside and outside extruded side wall panels which are arranged to be connected edge to edge to form inside and outside walls. Longitudinally spaced connecting wall panels span between the inside and outside walls at spaced positions across the width of the walls to hold the walls apart and define a hollow interior therebetween including a plurality of interconnected cells with a plurality of holes for communication of concrete and reinforcing bars between each cell and the next. Each connecting wall panel has T-shaped connectors at each edge for attachment to corresponding C-shaped receptacles on the side wall panels. Rigid foam insulation is inserted at the outside wall.

Abstract: A set of extruded panels is provided which can be assembled on site to create a permanent form-work for concrete. The set includes inside and outside extruded side wall panels which are arranged to be connected edge to edge to form inside and outside walls. Longitudinally spaced connecting wall panels span between the inside and outside walls at spaced positions across the width of the walls to hold the walls apart and define a hollow interior therebetween including a plurality of interconnected cells with a plurality of holes for communication of concrete and reinforcing bars between each cell and the next. Each connecting wall panel has T-shaped connectors at each edge for attachment to corresponding C-shaped receptacles on the side wall panels. Rigid foam insulation is inserted at the outside wall.

Abstract: A portable and collapsible building structure including a floor, a pair of side walls, a roof and a pair of end walls. The side walls each include a lower and upper panel pivotally coupled at their inner edges by a first hinge assembly. The outer edges of the side walls are pivotally coupled to the floor and roof by a second hinge assembly. The end walls are pivotally coupled to the roof by a third hinge assembly and releasably coupled to the floor and side walls by a C-shaped coupling chip. The first, second and third hinge assemblies permit the building structure to collapse so that the upper and lower panels of each side wall lie substantially flat between the floor and the roof, while the end walls pivot 270.degree. so as to lie substantially flat upon the roof. The first, second and third hinge assemblies include a plurality of one-piece, extruded, coupling channels, a plurality of hinge inserts, at least one hinge pin, and a C-shaped coupling clip.