A fitting for coupling an open upper end of a hollow section column to a support via which a building unit is to be supported on the column. The fitting comprises a body portion configured to be received in the open upper end of the column and rim portions that extend laterally outwardly from an upper end of the body portion so as to engage edge sections of the column at its upper end when the body portion is received in the open upper end.

A structural post includes a base plate defining a plurality of through holes, and a post portion that includes at least a pair of internal walls and at least a pair of external walls. A connector block is configured to receive a locking screw and to engage with a bolt thread of a bolt. A lock plate has a plate thread that is configured to engage the screw thread of the locking screw, and the lock plate is configured to expand upon being drawn by the locking screw into tight engagement with the connector block. The expanded lock plate is configured to apply a force on one of the pair of internal walls and one of the pair of external walls.

A structural post includes a base plate defining a plurality of through holes, and a post portion that includes at least a pair of internal walls and at least a pair of external walls. A connector block is configured to receive a locking screw and to engage with a bolt thread of a bolt. A lock plate has a plate thread that is configured to engage the screw thread of the locking screw, and the lock plate is configured to expand upon being drawn by the locking screw into tight engagement with the connector block. The expanded lock plate is configured to apply a force on one of the pair of internal walls and one of the pair of external walls.

A support for mounting an electrical box relative to a stud can include a support arm and an attachment feature, with the attachment feature configured to secure the support arm to the stud, and the support arm configured to support the electrical box. The attachment feature can include an attachment section that has a first configuration and a second configuration. In the first configuration, the attachment section can support the support arm at a first depth relative to the stud. In the second configuration, the attachment section can be configured to be folded over itself to support the support arm at a second, smaller, depth relative to the stud.

A support for mounting an electrical box relative to a stud can include a support arm and an attachment feature, with the attachment feature configured to secure the support arm to the stud, and the support arm configured to support the electrical box. The attachment feature can include an attachment section that has a first configuration and a second configuration. In the first configuration, the attachment section can support the support arm at a first depth relative to the stud. In the second configuration, the attachment section can be configured to be folded over itself to support the support arm at a second, smaller, depth relative to the stud.

An extendable and retractable column which is formed from at least three linked sections or chains. The linked sections include a plurality of individual segments linked end to end. As the linked segments are extended, each of the individual segments of the linked chains engage individual segments of adjacent linked sections to form a column. As the linked sections are retracted, each of the individual segments of the linked sections disengage from the individual segment of the adjacent linked sections and the individual linked sections may be rolled up into a multi-sided form for compact storage.

An extendable and retractable column which is formed from at least three linked sections or chains. The linked sections include a plurality of individual segments linked end to end. As the linked segments are extended, each of the individual segments of the linked chains engage individual segments of adjacent linked sections to form a column. As the linked sections are retracted, each of the individual segments of the linked sections disengage from the individual segment of the adjacent linked sections and the individual linked sections may be rolled up into a multi-sided form for compact storage.

The present disclosure is directed to a tower assembly for a wind turbine. The tower assembly includes a lattice tower portion, a tubular tower portion, and a transition region therebetween. The lattice tower portion includes a plurality of structural members connected together to define an open lattice tower. Further, the structural members include a plurality of supports and a plurality of cross-support members. The cross-support members are connected between the supports so as to define one or more openings. The tubular tower portion includes a lower portion and an upper portion. The first transition region includes a single-piece connection structure, a plurality of arm members, and a plurality of node connectors. The connection structure has a circumferential body configured to receive the lower portion of the tubular tower portion therein. Further, the node connectors join the plurality of supports of the lattice tower portion to the connection structure via the plurality of arm members.

A support column extends in a longitudinal dimension and includes a plurality of outer hollow longitudinal structures. Each longitudinal structure defines an interior passage extending along a length of the longitudinal structure. The support column includes a plurality of inner members. The plurality of outer hollow longitudinal structures are aligned end-to-end along a single axis. The interior passages of the plurality of outer hollow longitudinal structures cooperate to define an interior passage of the support column. The inner members are aligned end-to-end along the single axis within the interior passage of the support column so that opposed longitudinal ends of each of the inner members extend to respective longitudinal ends of each adjacent inner member. At least one end of at least one inner member is longitudinally offset from every longitudinal end of the plurality of outer hollow longitudinal structures.

A bearing wall includes a pair of vertical members that are joined to upper and lower horizontal members of a building so as to be spaced apart in a horizontal direction; and a wall surface member that includes a first joint portions joined to one of the vertical members, that includes a second joint portions joined to another of the vertical members, and that includes circular-shaped opening portions that are spaced apart in an up-down direction between the pair of vertical members so as to be disposed in a single column. A separation distance between a center of one opening portion and a center of an opening portion that is adjacent to the one opening portion in the up-down direction is shorter than a horizontal separation distance between the first joint portions and the second joint portions.