The invention relates to a method for producing a support structure having a three-dimensional geometry curved in any manner, made of at least one first and one second flat material piece, wherein the geometry has curves in three directions that are orthogonal to one another, with the following steps: A. preparing the desired geometry B. approximating the desired geometry C. subdividing the geometry D. defining at least one clearance region E. defining a plurality of connection points arranged on the at least one first and one second part F. defining chamfered edges extending between the polygonal cross-sections G. developing the at least one first and one second part H. cutting to length at least one first and one second flat material piece I. chamfering J. connecting the at least one chamfered first material piece and the at least one chamfered second material piece.

A stiffening assembly for stiffening a rod is provided. The stiffening assembly can include a pair of struts having an elongated base having opposite top and bottom surfaces. The struts can extend along either sides of the rod and be connected to one another in a back-to-back configuration, with the top surfaces facing outwardly in opposite directions. When connecting the struts together, a cavity is defined therebetween, the cavity being adapted to enclose the rod therein, effectively stiffening the rod. Also, a method of use is provided, and finally, a strut useful to embody the stiffening assembly is also provided.

A heavy duty girder, having a plurality of outer sides and a mounting channel disposed on each of the outer sides and including a bottom surface and a pair of side surfaces. Each of the side surfaces has one end extending to the outer side by one or two bending portions including a first bending portion coupled to the outer side and a second bending portion coupled to the side surface, and the other end extending to the bottom surface by a third bending portion. The bending direction of the second bending portion is opposite to or perpendicular to the bending direction of the first bending portion. The second bending portion abuts against an inner wall of the hollow body.

An extrusion structure including a central body extending along a longitudinal axis; a first arm body secured to the central body and extending along the longitudinal axis; a second arm body secured to the central body and extending along the longitudinal axis; a first head body secured to the first arm body and extending along the longitudinal axis; and a second head body secured to the second arm body along the longitudinal axis; and wherein the first and second head bodies projecting one towards the other and being spaced apart by a gap, the first head body having a first internal face facing the central body, the second head body having a second internal face facing the central body, and the first and second internal faces being either straight and coplanar or inwardly inclined towards the central body.

An extruded profile defining a normal section surface, a horizontal loading direction along the normal section surface and a vertical loading direction along the normal section surface perpendicular to the horizontal loading direction The profile includes a core arranged in a central position at the intersection of the directions, a plurality of arms each including a radial segment radially connected to the core and a tangential segment perpendicularly connected to the radial segment The radial segments of the adjacent arms are perpendicular to each other and each oriented 45? to the horizontal load direction and/or the vertical load direction, and the tangential segments of the adjacent arms are configured to simultaneously support the same load along the horizontal load direction and/or the vertical load direction.

The disclosed subject matter is directed to a building structural bracing apparatus having an inner core element disposed between an upper and a lower containment web. The brace frame being useful in the construction of earthquake and blast resistant structures where energy dissipation is desired.