The object of the invention is a multichamber structural element manufacturing method which for forming a multichamber structural element with chamber profiles (1) extending radially from the center defined by the connection of the chamber profiles (1) comprises the following steps: at least three chamber profile preforms (2) are provided, wherein each chamber profile preform (2) comprises two walls (3) made of a sheet of metal material and arranged with respect to each other in substantially parallel planes with a gap retained between them, wherein the edges of the individual walls (3) converge, and wherein a valve element (6) is arranged on at least one wall (3); the unconnected wall (3) edges of each of the chamber profile preforms (2) are sealed with a seal (5) for forming a closed hermetic empty inner space of the chamber profile preform (2); a fluid under pressure is introduced through the valve element (6) into the inner space of the chamber profile preform (2) for forming a deformed chamber profile (1), at least three chamber profile preforms (2) or chamber profiles (1) are connected in the area of the corresponding inner edges of the chamber profile preform (2) or the chamber profile (1), proximal with respect to the connection axis (4), along at least part of the inner edges. The object of the invention is also a multichamber structural element.

The present invention relates to a composite beam in which a fabricated truss is embedded in the concrete, and more particularly, it relates to a composite beam in which the fabricated truss acts as a truss beam which endures the concrete weight and the construction load in the liquid phase before the curing of the concrete and acts as a main structural member together with the concrete after the curing of the concrete.

A modular structural element (20) which is arranged to be connected to another such element so as to form an assembled structure, wherein the modular structural element is of substantially square outline or of substantially hexagonal or half-hexagonal outline, and the element comprises a principal height dimension and a principle lateral dimension, wherein, a ratio of the two said principal dimensions is no more than 6.

A pneumatic support having a body (112) which can be pneumatically pressurised and which, when under operating pressure, operationally holds a compression member (96, 128 to 131′) which extends substantially over the length of the body and a tensile member (98, 138 to 141′) which likewise extends substantially over the length (I) of the body at a distance from each other, wherein the compression member (96, 128 to 131′) and the tensile member (98, 138 to 141′) are connected to each other at the end in connection nodes (91), and wherein the body which can be pneumatically pressurised has pneumatic drop-stitch transverse fibre pressure panels (100, 165, 113 to 116).

A trussed collapsible tubular mast includes a deformable beam having an extended state, a flattened state, and a rolled state, where a stiffness and strength of the deformable beam in the extended state is greater than a different stiffness and a different strength of the deformable beam in the flattened state. At least one collapsible tubular mast wall has a plurality of truss members of a first material having a first material thickness. At least one truss member is disposed substantially perpendicular to a longitudinal axis of the trussed collapsible tubular mast. Disposed between the truss members is a wall area of a second material thickness less thick than the first material thickness.

The present disclosure is directed to climbing wall assemblies having a variety of improvements. For instance, the climbing wall assemblies may include connectors to attach the surface panels to the framework, in which the connectors may be mounted substantially anywhere along the front of the framework and at substantially any angle, providing for the securement of climbing panels in various geometries. The climbing wall assemblies may also include braces that may easily be adjusted to a desired length and configuration during construction of a climbing wall. The climbing wall assemblies may also include variable-angle, integral front posts, which provide for the easy and stable securement of climbing panels in various geometries. These improvements provide climbing wall assemblies that may be easily assembled to produce a desirable climbing wall structure having few framework components.

A system for providing an angled construction or bent beam construction. Such system may include a first beam comprising a first elongated beam segment having a first interlocking joint portion at one end, and a second beam comprising a second elongated beam segment having a second interlocking joint at one end, wherein the first interlocking joint portion is configured to rotatably couple to the second interlocking joint to form a rotatable joint such that the angle between the first beam and the second beam is adjustable.

The present disclosure is directed to climbing wall assemblies having a variety of improvements. For instance, the climbing wall assemblies may include connectors to attach the surface panels to the framework, in which the connectors may be mounted substantially anywhere along the front of the framework and at substantially any angle, providing for the securement of climbing panels in various geometries. The climbing wall assemblies may also include braces that may easily be adjusted to a desired length and configuration during construction of a climbing wall. The climbing wall assemblies may also include variable-angle, integral front posts, which provide for the easy and stable securement of climbing panels in various geometries. These improvements provide climbing wall assemblies that may be easily assembled to produce a desirable climbing wall structure having few framework components.

Extendable and retractable support structure is a support structure that can be extended and retracted. The support structure could be linear, such as a post, stud, rafter, beam, or similar. The support structure could also be two-dimensional, such as a floor, ceiling, wall, platform, deck, or similar. The support structure is formed by two strings of trapezoidal links that weave together or interlock together to form a rigid support structure. Each string of trapezoidal links is a flexible member with a plurality of trapezoidal links attached thereto that are evenly spaced by the overall width of each trapezoidal link. Each string of trapezoidal links is wound or winded onto a roll or a roll core. To extend the support structure, the two rolls rotate to unwind the two strings of trapezoidal links in unison wherein each trapezoidal link from one string interlocks between or weaves between two adjacent trapezoidal links on the other string, and vice versa. To retract the support structure, the two rolls rotate to wind in the two strings of trapezoidal links in unison wherein each trapezoidal link from one string unlocks or unweaves itself from between the two adjacent trapezoidal links on the other string, and vice versa.

A system comprises a retractable panel structure, for example a screen/wall/divider/partition that can be rolled up and that can be unrolled. The panel structure comprises a back face (47) and a front face (48) that are spaced-apart from each other. The front face (48) is at least partly formed of an array of strips (23, 40) that are separate from each other and that move apart to allow the panel structure to be rolled up and wherein the back face (47) forms hinges that connect the strips (23, 40) together and that are capable of flexing to allow the said strips (23, 40) to move apart when the sheet is rolled up.