Connections between nodes and tubes are provided. An apparatus can include additively manufactured first and second nodes, a tube, and an interconnect connecting the tube to the first and second nodes. An apparatus can include a node having an end portion with inner and outer concentric portions forming an annular gap therebetween, and a tube having an end portion extending into the gap.

A weldment that is embedded in a precast concrete building member that is used to join the concrete building member to other concrete building members. The weldment has a top plate, side plate, and outstanding top and bottom legs. The surface of the top plate and side plate are not embedded in the precast concrete building member. The legs are integrally formed with the top plate and side plate. The top plate and side plate present weldable surfaces to join by welding the precast concrete building member to another building member.

Steel connections of a column and beam(s) for a building structure with heavy loads are presented. First option is a single plate that is inserted through a slot in the W column flange(s) and attached to the column's web and flange(s). In the field, a W beam with a flange slot is inserted through the column connector plate and attached. Option 2 is the same as Option 1, except, two connector plates are provided for attachment to the beam web and flanges. Thirdly, brace frame connections are presented.

The present disclosure discloses a building information modeling (BIM)-based modular housing built with thin-wall channel steel comprising foundations, columns, beams, walls, a roof plate, doors, and windows. The columns and transverse beams adopt inward-flanging C-section steel or combined square steel arranged by oppositely buckling symmetric inward-flanging C-section steel. The columns and foundations, the columns and transverse beams, adjacent transverse beams, the columns or transverse beams and slant beams, the transverse beams or slant beams and roof plate, and joints of adjacent supports are connected to each other together by base connectors, butting connectors, or crossed connectors. According to the technical solution of the present disclosure, the inward-flanging C-section steel can be quickly and securely butted, or combined square steel can be quickly and securely butted. The joint is provided with webs, and can be used as a standard connector due to high strength. Relief holes provided at the inner side of the joint are buckled with inward-flanges of the inward-flanging C-section steel to each other and pressed together, thereby realizing an internal-external nesting effect. A positioning groove arranged outside the joint and the inward-flanging C-section steel can be nested together in a concavo-convex manner, and then pressed and fastened by a fastening steel strip, thereby realizing effects of fastening and slippage prevention.

A weldment that is embedded in a precast concrete building member that is used to join the concrete building member to other concrete building members. The weldment has a top plate, side plate, and outstanding top and bottom legs. The surface of the top plate and side plate are not embedded in the precast concrete building member. The legs are integrally formed with the top plate and side plate. The top plate and side plate present weldable surfaces to join by welding the precast concrete building member to another building member.

A connector assembly, having an upper connector coupled to a lower connector and a gusset plate sandwiched between the upper and lower connectors. Also, disclosed is a hoistable connector assembly, a lifting frame assembly, a coupling system for modular frame units, a method for assembling a module unit using the connector assembly, and a modular frame unit and building having the connector assembly.

A building structure with a balcony includes a beam with an upward facing cavity. The beam includes an opening in which a cantilevered section is received. The cantilevered section has a proximal end that is positioned in the cavity and a poured bonding structure fills the cavity.

A connector assembly, having an upper connector coupled to a lower connector and a gusset plate sandwiched between the upper and lower connectors. Also, disclosed is a hoistable connector assembly, a lifting frame assembly, a coupling system for modular frame units, a method for assembling a module unit using the connector assembly, and a modular frame unit and building having the connector assembly.

A space frame includes a plurality of support structures and a node member configured to couple with the plurality of support structures. The node member includes a base portion, a plurality of coupling members extending from the base portion, each of the plurality of coupling members configured to couple with each of the support structures, and a plurality of clamping members configured to couple each of the plurality of coupling members with each of the plurality of support structures.

A space frame includes a plurality of support structures and a node member configured to couple with the plurality of support structures. The node member includes a base portion, a plurality of coupling members extending from the base portion, each of the plurality of coupling members configured to couple with each of the support structures, and a plurality of clamping members configured to couple each of the plurality of coupling members with each of the plurality of support structures.