Abstract: A structural body is composed of a number of sections which are placed on one another and joined together. According to the invention, the sections, which consist of urethane foam or like plastic material, are provided, at least on one side and preferably on both sides, with a thin metal sheeting, and that the various sections are so shaped that their joining faces are congruent.The superposed sections, the joining faces of which are congruent, are cut out of sheets by means of a preferably computer-controlled laser.

Abstract: A buoyant plant especially for the off-shore manufacturing of concrete structures, as e.g. oil platforms, comprises two substantially parallel, spaced, elongated side sections 1,2, a roof sections 3 extending from the forward to the backward ends of said sections and connecting the top of said side sections to each other, a stem section connected to the forward ends of said side and roof sections, a substantially rectangular bottom section 5, the forward short side end of which is connected to said stem section and the backward short side end of which is situated spaced apart forwardly of the backward ends of said side sections, said bottom section being connected along its long side ends to the lower parts of said side sections, and a buoyant stern section 6 situated, and connectable and disconnectable, respectively, in the opening between said roof and side sections, said stern section 6 extending from the inner face of one side section to the other.

Abstract: A space framework comprises two multi-wire systems of spirally-wound wires, the wires which, in the one system, are wound in the one direction, and, in the other system, are wound in the other direction, being interconnected at points where they intersect. In the manufacturing process, the wires in both systems are wound simultaneously in opposite directions during simultaneous advancement. In this instance, the wires are stretched and shaped about a forming device. The wires are then interconnected at those points where, in the winding operation, they intersect at the outer contour of the space framework.A machine for manufacturing a space framework consists of magazines for supplying the wires in both systems, for winding purposes, a templating and welding device for the wound wires, and an advancement means for the space framework produced at the templating and welding device.