Abstract: A textured workpiece includes a body having an outer surface with at least a first surface portion. At least one of the body and the first surface portion is non-planar. A first set of barbs extends from and is integral with the first surface portion. A first set of grooves is formed in the first surface portion. Each barb of the first set barbs is associated with a respective one of the grooves of the first set of grooves. The workpiece can be used as reinforcing bar (rebar).

Abstract: A spiral rebar weldable metal rod with a constant or variable pitch of between 1 and 10 times a diameter of a cylinder into which the rod is inscribed; with a planar cross-section having at least two petals connected to the central section and separated from each other by gaps. The triangular petals are connected with the central section by their vertices; the petal edges distant from the central section are circular. The rebar has ribs; the ribs' height is between 0.5 mm and 1.0 mm and distances between the ribs are between 5 mm and 15 mm.

Abstract: Concrete reinforcing members having rolled cross sections, and methods for manufacturing and using such reinforcing members in concrete construction are disclosed herein. In one embodiment, a concrete reinforcing member is formed from a piece of metal having a first elongate edge portion spaced apart from a second elongate edge portion. The piece of metal further includes an inner surface portion extending between the first and second edge portions, and an outer surface portion extending between the first and second edge portions. In this embodiment, the piece of metal is rolled about a longitudinal axis in an overlapping fashion into coiled or spiral cross-sectional shape.

Abstract: The disclosed concerns a method of transporting a tower of a wind turbine in an upright position to an assembly site of the wind turbine, whereby the tower is equipped with a strake set comprising a number of strakes positioned to lead from a top of the tower in the upright position down towards a bottom of the tower, at least one of the strakes being realized as a detachable strake. The invention also concerns a strake set and transport assembly.

Abstract: Disclosed a reinforcement structure for reinforced concrete and methods for manufacturing thereof. In one aspect, the reinforcement structure includes a rod comprising a spiral strip having a pitch between 1.0 and 10.0 times a width of the strip and a ratio of thickness of the strip to the width of the strip in a range of 1:4 to 1:10. The surface of the spiral strip may be entirely or partially corrugated with ribs of arbitrary shape and having height in a range of 0.05% to 0.30% of the thickness of the strip. In another aspect, method for manufacturing a reinforcement structure comprises flattening a wire rod into a flat strip, corrugating it with ribs, and twisting the ribbed strip into a spiral of the specified pitch.

Abstract: A method for fabricating a hollow bar that forms elements of a grille or railing of a metalwork piece where the bar is twisted manually, machine-assisted or automated machinery, into a spiral form for decorative or ornamental purposes. By providing the hollow bar to be comprised of separate longitudinal parts which may be hinged-joined to complementarily fastened to each other to form the hollow bar, the longitudinal joints are thus amenable to increased torsional stress, such that each of the parts may be twisted without breaching the material's fatigue limit and the bar as a whole capable of being twisted with more spiral turns within its elasticity limits. The twisted bar may thus be released for re-working for adjustments or re-installation. A number of exemplary joint embodiments, internal and external bracing accessories are also disclosed to cater for the different longitudinal part fabrication, e.g. by extrusion or roll-milling.

Abstract: A lightweight hollow member having excellent stiffness and impact properties and which is suitable for automotive parts due to having a high strength such as at least 780 MPa and a complicated shape is provided. A hollow member 11 has a hollow steel body 14. The body 14 is constituted by a single member at least in the lengthwise direction. The body 14 has a flat cross section having at least a portion with a maximum outer dimension L1 and a portion with an outer dimension L2 shorter than the maximum outer dimension L1. The body 14 has a twisted portion in a portion of its length.

Abstract: To improve tensile strength without impairing flexibility and adhesion to concrete, and to form a thick coating in a surface layer part for preventing a basis material from being exposed by damage to the coating, a method of forming double coatings on a prestressing strand includes a primary painting process after a pre-treatment process, in which a resin coating is formed only at the surface layer, a secondary painting process in which respectively individual state resin coating is formed on an outer peripheral face of each of the core wire and surrounding wires under a loosened and separated state, thereby forming a double coating for each surrounding wire, and a finishing process of tightening and retwisting the surrounding wires about the core wire to an original state. The obtained prestressing strand has the double coating portions only at the surface layer and sufficient flexibility and adhesion to concrete.