A connection element (12) made of composite material includes a bundle of fibers (13) and a binding agent, and has at least one preformed portion (14) and at least one free fiber portion (16, 18, 19). The at least one preformed portion (14) includes a section of fibers (13) embedded in the binding agent to form a monolithic structure. At least part of the fibers (13) of the at least one free fiber portion (16, 18, 19) has virgin fibers (13).

In between a shear wall of a reinforced concrete structure disposed in a column and beam frame of a reinforced concrete structure and the frame, transmission capability of a shear force between is enhanced from a stage which a relative deformation occurs among between the frame and the shear wall. Plate is disposed between an inner peripheral surface of a frame and an outer peripheral surface of a shear wall, integrated with any one of the frame and the shear wall, and continuous in a longitudinal direction and in a height direction of the shear wall and penetrate the plate in a thickness direction. The anchors are dispersedly in the longitudinal direction and in the height direction of the shear wall.

A platform for a tower of a wind turbine is provided, wherein the platform is adapted for a hanging arrangement inside the tower and includes at least one support for supporting the platform in a horizontal direction against a tower wall, wherein the support includes a foot section for contacting the tower wall, an abutment section attached to the platform, and a pretensioner, wherein the pretensioner preloads the foot section against the abutment section with a pretension force directed towards the tower wall, wherein the foot section is moveable at least sectionally towards the platform when a force directed towards the platform and acting on the foot section exceeds the pretension force.

An internal splice joint that facilitates coupling of a pair of joist members together is provided. The internal splice joint includes a main wall, first and second side flanges, and first and second end flanges. The first side flange extends upwardly from the main wall. The second side flange extends upwardly from the main wall and is spaced from the second side flange. The first end flange extends from the first side flange. The second end flange extends from the second side flange. The first end flange and the second end flange extend inwardly towards each other and are spaced from each another. A joist assembly that includes the internal splice joint is also provided.

Anchors, clutches, and lifting systems are described herein that increase the size of a shear cone within a precast concrete panel without using multiple clutches and without increasing the complexity of the lift system. A shear cone is the volume within the panel that the anchor and clutch pull on when orienting and positioning the precast concrete panel. Anchors described herein encompass a larger volume of the panel in different ways to produce a larger shear cone. Similarly, the clutches described herein have features that allow a clutch to accommodate the improved anchors. As a result, the anchors, clutches, and lifting systems provide a larger shear cone in the panel to increase the load capacity of the lifting system and reduce the likelihood of failure.

Example embodiments provide systems and methods for coupling prefabricated panels to a structure. One example system provides a system for coupling a prefabricated panel to a structure. The system may comprise a first member. The first member may be couplable to a framing structure of the prefabricated panel. The system may also comprise a second member. The second member may pivot relative to the first member. The system may also comprise a fastener. The fastener may be configured to bias the first and second members together such that a component of the structure is at least partially receivable between the first and second members and tightening the fastener reduces a distance between the first and second members.

A precast concrete component is provided with anchor having a cylindrical rod bent to form a centrally-positioned handle and two downwardly extending legs. The handle can be relatively smooth and die legs are provided with a series of projections along their lengths, such as are formed by threads. The legs of the anchor may converge inwardly from the handle and are compatible with precast concrete double tees having webs or stems that taper from the flange of the double tee downward. Alternatively, the legs of the anchor may diverge outwardly from the handle.

The disclosure is directed to an elongated geodesic dome with an arched-tunnel section. In some embodiments including: a first adjustable angle hub connector, the first adjustable angle hub connector being a connector of a first plurality of tubular struts, the first plurality of tubular struts being inserted into the first adjustable angle hub connector; a second adjustable angle hub connector, the second adjustable angle hub connector being a connector of a second plurality of tubular struts, the second plurality of tubular struts being inserted into the second adjustable angle hub connector; a third adjustable angle hub connector, the third adjustable angle hub connector being a connector of a third plurality of tubular struts, the third plurality of tubular struts being inserted into the third adjustable angle hub connector. The adjustable angle hub connectors may be removable for adjusting a length of the arched-tunnel section of the elongated geodesic dome.

An anchor for being embedded in concrete for attachment to a fastener to support a load comprises a plug having a main body portion extending upwardly from a base portion, the plug for being attached to a form board prior to pouring of concrete, the plug having an end portion disposed a distance from the form board; and an anchor body attached to the end portion. The plug is separable from the anchor body and removable from the concrete after the concrete is cured, leaving the anchor body embedded in the concrete, the plug providing a void in the concrete after removal to provide an access opening for a threaded portion of a fastener to attach to the anchor body.

A hybrid wall system includes studs with spacers interspersed between the studs. The spacer is a flat elongate member with at least one hook-like member on each end of the elongate member to secure ends of the elongate member between two studs. At least one snap member on each end of the elongate member is removed to remove the spacer to release the spacer between the two studs. The system further includes a base track and a top track with a slip spacer assembly used to level the tops of the studs. A drop-in ceiling is placed on top of the leveled studs. A leveling assembly on the base track is used to raise and lower at least one of the studs for purposes of attaching cladding to the at least one stud.