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.

An apparatus for protection of an elongated structural support from impact, the apparatus includes an elongated impact protection component in the form of a unitary part having an inner surface, an outer surface, and a plurality of orthogonally-oriented projections spaced along a length of the elongated impact protection component. The projections of the elongated impact protection component include integrally formed connectors for interlocking connection to other same type impact protection components.

A building sub-floor construction comprising a plurality of elongated beams formed of rigid polymer foam material, wherein the elongated beams comprise similar cross-sectional shapes, and wherein the elongated beams are configured to snuggly engage one another along their lengths to produce a continuous slab.

A method of making a virgin joint between at least two separate structural hollow sections in a truss or jacket structure made of the at least two structural hollow sections may include the steps of applying a fiber reinforced polymer wrap around the at least two structural hollow sections in a transitional area, covering and thus bonding together the at least two structural hollow sections, and forming the virgin joint between the at least two structural hollow sections and the fiber reinforced polymer wrap. Welding of the virgin joint between the at least two structural hollow sections is avoided.

A method of making a virgin joint between at least two separate structural hollow sections in a truss or jacket structure made of the at least two structural hollow sections may include the steps of applying a fiber reinforced polymer wrap around the at least two structural hollow sections in a transitional area, covering and thus bonding together the at least two structural hollow sections, and forming the virgin joint between the at least two structural hollow sections and the fiber reinforced polymer wrap. Welding of the virgin joint between the at least two structural hollow sections is avoided.

Natural bamboo is chemically treated to remove at least some lignin therefrom. As a result, the bamboo becomes more porous and less rigid, while otherwise retaining the aligned microstructure of bamboo fibers and constituent cellulose nanofibers. In some embodiments, the treated bamboo can then be pressed such that the lumina therein at least partially collapse, thereby improving the strength and toughness of the bamboo among other properties. In some embodiments, the treated bamboo can be infiltrated with a polymer or polymer precursor, and/or have non-native particles added to surfaces thereof to tailor properties of the resulting bamboo structure. By further modifying, manipulating, or machining the treated bamboo, it can be adapted to various applications.

The invention describes a girder profile made of stone material and tensile-resistant material, which is preferably made of 002 in order to fix greenhouse gases. This is intended to replace steel girders and aluminum girders with sustainable building materials.

The invention adopts the principle of dovetailing from timber construction and transfers this principle to the structure made of stone material and fiber material, in that the planes of the profile, which usually meet orthogonally, overlap geometrically with regard to the tension-stable material parts or at least meet in one cutting plane.

Such materials made of mineral substances and fibrous materials are significantly lighter, more durable and more ecological than such carriers made of metallic materials.

The invention describes a girder profile made of stone material and tensile-resistant material, which is preferably made of 002 in order to fix greenhouse gases. This is intended to replace steel girders and aluminum girders with sustainable building materials.

The invention adopts the principle of dovetailing from timber construction and transfers this principle to the structure made of stone material and fiber material, in that the planes of the profile, which usually meet orthogonally, overlap geometrically with regard to the tension-stable material parts or at least meet in one cutting plane.

Such materials made of mineral substances and fibrous materials are significantly lighter, more durable and more ecological than such carriers made of metallic materials.

A formwork support for supporting concrete formworks in the construction sector, comprising an upper flange and a lower flange, which are connected to one another via a hollow profile web such that they are at an invariant distance in relation to one another, wherein the hollow profile web is stiffened inside by framework struts.