The system and method for connecting a square concrete-filled steel tubular column to a reinforced concrete footing includes a short steel pipe partially embedded in the footing, the pipe having a top end having flanges extending radially therefrom, the top end extending into a cavity in the footing having an elliptical top opening and circular base, the flanges extending above the base. An elliptical base plate is welded to the bottom of the tubular steel column, the base plate having a circular opening defined therein and a plurality of spaced flange slots depending therefrom. The bottom end of the column is lowered into the cavity, the elliptical base plate passing through the elliptical opening in the cavity, and the column is rotated 90° to interlock the flanges with the flange slots. The cavity is filled with concrete grout, and the square or rectangular steel column is filled with concrete.

A resilient prestress-free steel structure includes the elastic centering beam and two pin-ended box column bases. The elastic centering beam includes two cantilever segment I-shaped steel beams, a middle segment I-shaped steel beam and buckling restrained high strength steel bars. The cantilever segment I-shaped steel beams are fixed to the two pin-ended box column bases, the middle segment I-shaped steel beam is connected between the two cantilever segment I-shaped steel beams, the buckling restrained high strength steel bars are symmetrically arranged. One end of each of the buckling restrained high strength steel bars is firmly connected with the web of each of the cantilever segment I-shaped steel beams, and the other end of each of the buckling restrained high strength steel bars is firmly connected with the web of the middle segment I-shaped steel beam. The resilient prestress-free steel structure is arranged in left and right symmetrical manner.

A frame using tubular columns and tubular rafters of generally rectangular cross section. Columns are arranged parallel, spaced apart, opposed pairs that are connected by bolted-on girts to form wall frames. Rafters are arranged parallel, spaced apart, opposed pairs that are connected by bolted-on purlins to form roof frames. Inwardly facing sides of columns and rafters have pluralities of castellated holes. Outwardly facing sides of columns and rafters have another plurality of castellated holes. All connections for braces and crane lifts are made in the inwardly facing sides of the columns and rafters. Joints have either a ridge plate or a haunch plates, each plate with two bolt holes that may be pivot holes and additional bolt holes for securing the plates. Base plates have two pairs of parallel vertical spaced-apart flanges, each pair fitting within and releasably attachable to a column. Pairs may be arranged parallel or perpendicular.

A clearspan structure including component systems, and methods of forming a clearspan structure including component systems, for mitigating hazards to personnel or equipment from explosions, fires, toxic material release, and other hazards in hazardous locations. The exemplary clearspan structure is also capable of withstanding environmental conditions such as snow loads and wind. The exemplary clearspan structure is, for example, a tent or fabric structure which includes a plurality of frame members forming a support system for the clearspan structure, and fabric roof portions and walls for enclosing the clearspan structure.

A multistory building construction system comprising at least one base plate comprising a centrally disposed sleeve extending vertically from a top surface thereof and configured to engage an interior portion of a bottom end of at least one first-floor column comprising a cap plate disposed on a top end thereof with a centrally disposed sleeve extending vertically therefrom configured to engage an exterior portion of a bottom end of at least one upper-floor column and configured to support a decking for a concrete floor and configured so that a top end of the sleeve may be used as a benchmark for pouring the concrete floor, the first-floor column and the upper-floor column further comprising at least one sheer tab for attachment of beams for support of the decking.

A foundation support system for supporting a manufactured building from a ground surface, includes a pan configured to engage the ground surface. The pan includes a longitudinal bracket integrally formed in the pan. The bracket includes a pair of spaced walls extending in a longitudinal direction. First and second longitudinal struts include first and second lower strut ends, respectively, received between and attached to the spaced walls of the longitudinal bracket. The pan may also include an integrally formed lateral bracket which receives a lateral strut. The pan may include integral reinforcing ribs extending parallel to and between the walls of each bracket.

The present invention relates to a bent column shoe formed from one piece of sheet metal with a material thickness, the sheet metal having a first side and a second side, the bent column shoe comprising an anchor section with a longitudinal axis and a width axis, wherein the anchor section has a first end and a second end, —a supporting section with a first supporting end and a second supporting end, wherein the first supporting end is in extension of the second end of the anchor section, a support section with a support face, arranged substantially perpendicular to the longitudinal axis of the anchor section, and wherein the support section is arranged in extension of the supporting section, and at least one fastening face arranged substantially perpendicular to the support face, and wherein the anchor section, the supporting section, the support section and the at least one fastening face are manufactured from one and the same piece of sheet metal, characterised in that the anchor section, measured along the width axis, comprises at least three layers of the sheet metal arranged to provide at least three times the material thickness relative to the support section measured along the longitudinal axis.

A beam connecting system uses a threaded connector rod and a mating connector, for example a nut, for mounting the end of a wood beam against the upright supporting surface of a supporting body. The connector rod protrudes from the upright supporting surface of the supporting body to be received in a fastener bore extending longitudinally into the beam from the end face of the beam. A transverse access bore which intersects the fastener bore receives the mating connector to form a mechanical connection to fasten the end face of the beam against the upright supporting surface. A wood plug encloses the access bore such that the mechanical connection is fully embedded in the beam and supporting body so as to be surrounded by wood material, and thus be protected from elevated temperatures in fire condition.

A skeletal structure and method of assembly are provided. The skeletal structure includes one or more vertical columns, one or more upper tracks operatively attachable to the vertical columns, and one or more base tracks operatively attachable to the vertical columns. Upper brackets are attached to the upper tracks, such that the upper brackets attach the upper tracks to the vertical columns. Base brackets are attached to the base tracks, such that the base brackets attach the base tracks to the vertical columns. The skeletal structure is freestanding upon attachment of the upper tracks and the base tracks to the vertical columns.