A joint assembly for joining structural members in a building frame can comprise: a marriage strap including one or more through-holes; one or more fasteners configured to be inserted through the one or more through-holes of the marriage strap; and a cube coupling joint including one or more recessed channels sized and shaped to receive a portion of the marriage strap, one or more fastener holes located within the one or more recessed channels and configured to receive and secure to the one or more fasteners. In some embodiments, the marriage strap is configured to be inserted into the one or more recessed channels of the cube coupling joint and the one or more fasteners are further configured to be inserted into and secured to the one or more fastener holes of the cube coupling joint.

A joint assembly for joining structural members in a building frame can comprise: a marriage strap including one or more through-holes; one or more fasteners configured to be inserted through the one or more through-holes of the marriage strap; and a cube coupling joint including one or more recessed channels sized and shaped to receive a portion of the marriage strap, one or more fastener holes located within the one or more recessed channels and configured to receive and secure to the one or more fasteners. In some embodiments, the marriage strap is configured to be inserted into the one or more recessed channels of the cube coupling joint and the one or more fasteners are further configured to be inserted into and secured to the one or more fastener holes of the cube coupling joint.

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.

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 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.

The modular anti-ballistic shelter system includes two end units and, optionally, additional middle units for a wider structure. End and middle units may also stack atop each other for multi-story structures. Each unit is configured to comply with both ISO standards for size and weight, and with the U.S. Department of State Certification Standard for Forced Entry and Ballistic Resistance of Structural Systems. Each exterior wall of each end unit and each middle unit is reinforced with wall studs that penetrate the unit's structural framework of beams and frames. Even though these wall studs are welded into place, penetration of the wall studs into the beams and frames ensures acceptable blast, ballistic, and forced entry resistance even if the welds are flawed.

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.

The modular anti-ballistic shelter system includes two end units and, optionally, additional middle units for a wider structure. End and middle units may also stack atop each other for multi-story structures. Each unit is configured to comply with both ISO standards for size and weight, and with the U.S. Department of State Certification Standard for Forced Entry and Ballistic Resistance of Structural Systems. Each exterior wall of each end unit and each middle unit is reinforced with wall studs that penetrate the unit's structural framework of beams and frames. Even though these wall studs are welded into place, penetration of the wall studs into the beams and frames ensures acceptable blast, ballistic, and forced entry resistance even if the welds are flawed.

A building information modeling (BIM)-based modular housing built with thin-wall channel steel can include 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 transverse beams are connected to each other together by base connectors, butting connectors, or crossed connectors. The joint is provided with webs, and can be used as a standard connector due to high strength, 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 joint assembly for joining structural members in a building frame can comprise: a marriage strap including one or more through-holes; one or more fasteners configured to be inserted through the one or more through-holes of the marriage strap; and a cube coupling joint including one or more recessed channels sized and shaped to receive a portion of the marriage strap, one or more fastener holes located within the one or more recessed channels and configured to receive and secure to the one or more fasteners. In some embodiments, the marriage strap is configured to be inserted into the one or more recessed channels of the cube coupling joint and the one or more fasteners are further configured to be inserted into and secured to the one or more fastener holes of the cube coupling joint.