The strengthening system for beam-column connections in steel frame buildings to resist progressive collapse helps to mitigate progressive collapse in the event of accidental column loss by using a system of rippled steel plates reinforcing the beam-column connection. Various configurations of rippled steel plates are provided to connect in-plane and transverse beams at a joint. In the event of severe damage caused to a column of a steel framed building, the upper joints of the damaged column undergo downward movement. The rippled plates at the joint straighten during the initial downward movement, and resist further downward movement after complete straightening of the ripples. This helps in the development of catenary action in steel beams. The proposed system is simple, fast to construct, demountable, and easy to repair/replace after damage caused by blast loads.

A mullion is adapted for use in a narrow stile door system. The mullion is a three-section mullion with top and bottom hollow mullion tubes and an I-shaped centerpiece. The top and bottom hollow mullion tubes have a first outside width and first outside depth and a second inside width and second inside depth, the second inside width and depth defined by the inside of the hollow tube walls. The I-shaped centerpiece is connected to and fixed in between the top and bottom mullion tubes. The I-shaped centerpiece comprises a thin middle portion and top and bottom flanges, and top and bottom insert portions connected to the top and bottom flanges, and the top and bottom insert portions having a third width and third depth that are smaller than the second inside width and depth of the top and bottom hollow mullion tubes, with the insert portions adapted to be inserted into the hollow portion of the top and bottom mullion tubes and fixed therein.

A framing system for constructing at least a portion of a building. The framing system comprising beams, cross beams, corner posts, and inline posts. The beams including flanges and a wall arranged between the flanges. The cross beams including a flange and a wall attached to the flange. The corner posts including walls and flanges. The inline posts including flanges and a wall arranged between the flanges. The flanges include slots and the walls include open areas. Panels may attach to the slots. Decorative patterns may be integrally formed in the open areas.

A framing system for constructing at least a portion of a building. The framing system comprising beams, cross beams, corner posts, and inline posts. The beams including flanges and a wall arranged between the flanges. The cross beams including a flange and a wall attached to the flange. The corner posts including walls and flanges. The inline posts including flanges and a wall arranged between the flanges. The flanges include slots and the walls include open areas. Panels may attach to the slots. Decorative patterns may be integrally formed in the open areas.

A construction panel includes a concrete layer and a plurality of framing members coupled to the concrete layer. Each framing member includes first and second channels having respective webs and flanges extending from the webs to form openings in first and second channels facing away from each other. Each framing member also includes a plurality of flanges positioned in and extending across a gap between the first and second channels. Each framing member further includes at least one bent bar including a first plurality of bar sections, with each bar section of the first plurality of bar sections positioned adjacent to at least one flange of the plurality of flanges and extending out from within the gap and into the concrete layer.

An apparatus, such as a beam pocket, connects a beam to a wall, such as a concrete wall. The apparatus includes a frame having a plurality of panels that cooperate to define a pocket of various heights. The apparatus includes a clamp within the pocket. The clamp is configured to secure an end of the beam at a position within the pocket. The clamp is further configured to selectively define the position relative to the frame. The apparatus further includes at least one anchor extending from the clamp and away from the pocket for mounting with the wall.

A multi-story building that includes a vertical support core and a plurality of floor plates is described, wherein fabrication of the building includes, in one embodiment, assembling each of the floor plates at or near ground level, and lifting each of the floor plates to a design level on the vertical support core. A system and device for securing one of the floor plates to the building includes employing a vertically-oriented lock-in bracket.

A mullion is adapted for use in a narrow stile door system. The mullion is a three-section mullion with top and bottom hollow mullion tubes and an I-shaped centerpiece. The top and bottom hollow mullion tubes have a first outside width and first outside depth and a second inside width and second inside depth, the second inside width and depth defined by the inside of the hollow tube walls. The I-shaped centerpiece is connected to and fixed in between the top and bottom mullion tubes. The I-shaped centerpiece comprises a thin middle portion and top and bottom flanges, and top and bottom insert portions connected to the top and bottom flanges, and the top and bottom insert portions having a third width and third depth that are smaller than the second inside width and depth of the top and bottom hollow mullion tubes, with the insert portions adapted to be inserted into the hollow portion of the top and bottom mullion tubes and fixed therein.

A framing system for constructing at least a portion of a building. The framing system comprising beams, cross beams, corner posts, and inline posts. The beams including flanges and a wall arranged between the flanges. The cross beams including a flange and a wall attached to the flange. The corner posts including walls and flanges. The inline posts including flanges and a wall arranged between the flanges. The flanges include slots and the walls include open areas. Panels may attach to the slots. Decorative patterns may be integrally formed in the open areas.

A joint connection structure of a building framework includes a column assembly including a column and a pair of gusset plates connected to the column on opposite sides of the column and extending laterally outward from the column. A full-length beam assembly includes a full-length beam having upper and lower flanges and an end portion received between the gusset plates. A connecting member is operatively attached by welding to at least one of the flanges of the full-length beam. The connecting member is bolted to at least one of the gusset plates of the column assembly to connect the full-length beam assembly to the column assembly.