An angled coupling including a main pass-through coupler to allow a first threaded rod to pass therethrough and a second coupling extending at angle therefrom to receive second threaded rod. The main coupler is configured to be secured to any location on the first threaded rod without requiring it to be screwed onto first threaded rod. The main coupler includes a first half and a second half spaced from each other that can be secured together at desired location on first threaded rod. The main coupler includes an upper section having a first approximately half of body thereof and corresponding threads and lower section having a second approximately half of body, opposite the first half, and corresponding threads. The first threaded rod is retained in both halves by insertion and rotation until the threaded rod snaps in place and kept fixed with retaining clips.

Various implementations include methods and apparatuses for constructing a concrete structure. In one implementation, a structure includes a pre-cast concrete column section and a pre-cast concrete beam section. The column section includes an embedded first assembly with a threaded rod, and the beam section includes an embedded second assembly defining a channel for receiving the threaded rod. Grout is fed through a joint between the column and beam sections into the second assembly to couple the threaded rod with the second assembly. The grout is urged through the joint and the second assembly by gravity and by applying vacuum suction to a grout port defined by the second assembly. The grout port extends between the channel of the second assembly and an external face of the beam section.

A reinforcement-confined circular steel tube member with enhanced end stiffness. Two ends of a first end sleeve are respectively connected to a first end plate and a first connecting annular plate. Two ends of a second end sleeve are respectively connected to a second end plate and a second connecting annular plate. A first end of a circular steel tube passes through the first connecting annular plate to be inserted into the first end sleeve and fixed to the first end plate, and a second end of the circular steel tube sequentially passes through restraint rings and the second connecting annular plate to be inserted into the second end sleeve and fixed to the second end plate. Two ends of each steel bar are respectively provided with a first limit part and a second limit part.

An apparatus for aligning and joining construction elements comprising threaded studs or bars protruding from opposing elements; interlocking members adapted to screw together associated with each of the opposed studs; an adjustment nut screwable on one of the studs wherein, the adjustment nut is screw jacked against one of the interlocking members to align the elements and then locked and encapsulated by screwing together the interlocking members. There can be additional stud or bar alignment means associated with the apparatus.

A rebar coupler that includes a plurality of segments having the same shape and radially arranged, the segments being seated on outer surfaces of a pair of reinforcing bars with ends of the reinforcing bars simultaneously accommodated therein, a spacer configured to accommodate the segments therein and support them while spacing the segments at regular intervals, and a pair of sleeves configured to press the outer surfaces of the reinforcing bars against inner peripheral surfaces of the segments by allowing the segments to be close to each other when the sleeves approach each other.

A coupler for mounting to externally threaded reinforcing bar for use in concrete construction, the comprising a body having a portion with an internal thread for engagement with the thread of the reinforcing bar, wherein the thread form at the inner end portion of the internal thread includes on one of its flanks an enlargement of progressively increasing extension, the enlargement extending towards an opposing flank of the thread to provide an increasing friction fit with the thread of the bar. Various embodiments provide the enlargement being only on a part of the face of the flank whereby the remainder of the face of the flank forms, in conjunction with the adjacent flank of the bar thread during tightening, a void for receiving material displaced during tightening.

An anchor bolt machining apparatus including an anchor bolt machining die and a die holder. The anchor bolt machining die includes a first head portion for fixing an anchor bolt and a first body portion receiving a screw machining die and the die holder includes a second head portion coupled to a rotational force supply device, a support portion coupled to the anchor bolt machining die, and a second body portion connecting the second head portion and the support portion.

A rebar movement-prevention-type one-touch coupler is configured to allow rebars to be fixed without a movement of the rebars after performing a one-touch insertion. A fixation of the rebars is completed by performing an additional tightening operation to housing units into which the rebars are inserted. The coupler increases both the fixation stability of the rebar and the safety of a structure employing the rebar.

Described herein is a coupling device, associated parts and a method of use thereof. In one aspect, a coupling device is described comprising a sleeve with an inner surface that encloses at least part of at least one elongated element to be coupled; and at least one deformation means fitted with interference between, and causing local deformation about, at least part of the inner surface of the sleeve and/or an adjacent outer surface of the at least one elongated element. A deformation means insertion tool, a coupling sleeve, a deformation means, and a method of coupling at least one element are also described. The described coupling device, associated parts and a method of use offer the ability to couple together different elements in a strong and/or ductile manner, coupling being tuneable as needed to suit the preferred application. The coupling described may overcome art issues associated with bulky size of coupling, in particular, radial protrusion. The coupling may also increase the coupling force therefore increase the load that may be managed across the coupling device. Further, the way the parts are assembled may minimise generation of localised points of stress therefore also increasing the load that may be managed across the coupling device.

Various implementations include methods and apparatuses for constructing a concrete structure. In one implementation, a structure includes a pre-cast concrete column section and a pre-cast concrete beam section. The column section includes an embedded first assembly with a threaded rod, and the beam section includes an embedded second assembly defining a channel for receiving the threaded rod. Grout is fed through a joint between the column and beam sections into the second assembly to couple the threaded rod with the second assembly. The grout is urged through the joint and the second assembly by gravity and by applying vacuum suction to a grout port defined by the second assembly. The grout port extends between the channel of the second assembly and an external face of the beam section.