Precast construction elements are described suitable for use in high seismic areas. The precast construction elements can be precast, pre-topped double tees. The precast construction elements incorporate a passive energy dissipation device in a flange. The energy dissipation device provides a ductile connection having a deformation capacity of larger than 0.6″. Adjacent elements are connected to one another at joints that include the passive energy dissipation device. Passive energy dissipation devices can be passive hysteretic dampeners, such as U-shaped flexural plates. Passive energy dissipation devices can be bar dissipaters (e.g., grooved dissipaters). Also described are passive hysteretic dampers that include U-shaped flexural plates held in conjunction with a reinforcement element that defines a circle around which the flexural plate can bend.

Precast construction elements are described suitable for use in high seismic areas. The precast construction elements can be precast, pre-topped double tees. The precast construction elements incorporate a passive energy dissipation device in a flange. The energy dissipation device provides a ductile connection having a deformation capacity of larger than 0.6″. Adjacent elements are connected to one another at joints that include the passive energy dissipation device. Passive energy dissipation devices can be passive hysteretic dampeners, such as U-shaped flexural plates. Passive energy dissipation devices can be bar dissipaters (e.g., grooved dissipaters). Also described are passive hysteretic dampers that include U-shaped flexural plates held in conjunction with a reinforcement element that defines a circle around which the flexural plate can bend.

A cross-laminated timber (CLT) and cold formed steel (CFS) connector and system is provided. The CLT and CFS connector comprises a track, at least one fastener, and at least one spring. The track is configured to connect to at least one CFS stud. The at least one fastener includes a head and shaft. The at least one fastener is configured to connect the track to a CLT panel. The at least one spring is configured to receive the shaft of the fastener and compress between the head of the fastener and the track. Methods of installing the CLT and CFS connector and system are also provided.

Precast construction elements are described suitable for use in high seismic area. The precast construction elements can be precast, pre-topped double tees. The precast construction elements incorporate a passive energy dissipation device in a flange. The energy dissipation device provides a ductile connection having a deformation capacity of larger than 0.6″. Adjacent elements are connected to one another at joints that include the passive energy dissipation device. Passive energy dissipation devices can be passive hysteretic dampeners, such as U-shaped flexural plates. Passive energy dissipation devices can be bar dissipaters (e.g., grooved dissipaters). Also described are passive hysteretic dampers that include U-shaped flexural plates held in conjunction with a reinforcement element that defines a circle around which the flexural plate can bend.

Precast construction elements are described suitable for use in high seismic area. The precast construction elements can be precast, pre-topped double tees. The precast construction elements incorporate a passive energy dissipation device in a flange. The energy dissipation device provides a ductile connection having a deformation capacity of larger than 0.6″. Adjacent elements are connected to one another at joints that include the passive energy dissipation device. Passive energy dissipation devices can be passive hysteretic dampeners, such as U-shaped flexural plates. Passive energy dissipation devices can be bar dissipaters (e.g., grooved dissipaters). Also described are passive hysteretic dampers that include U-shaped flexural plates held in conjunction with a reinforcement element that defines a circle around which the flexural plate can bend.

A bracket is combined with a rail that is to be attached to an elongate structural element by the bracket. The bracket includes a body and a bolt. The body is configured for attachment to the elongate structural element. The body defines a shoulder from which the rail is attached so that the rail is connected to the element. The bolt is engaged with the rail and is movable to engage the body. The body has a threaded passage to engage the bolt to fix the rail to the body.

A bracket is combined with a rail that is to be attached to an elongate structural element by the bracket. The bracket includes a body and a bolt. The body is configured for attachment to the elongate structural element. The body defines a shoulder from which the rail is attached so that the rail is connected to the element. The bolt is engaged with the rail and is movable to engage the body. The body has a threaded passage to engage the bolt to fix the rail to the body.

A construction module for constructing a structure, including an elongate member having a substantially L-shaped cross-section provided with connecting portions arranged to detachably attach with connecting portions on second and further construction modules, to form structure. A temporary structure can be formed from two or more of the construction modules. The structure may be temporary, semi-permanent or permanent.

A connector is provided that minimizes the surface profile of a connection between a header and a vertical member. The portion of the connector that engages the side surface of the vertical member and the horizontal member has a notched section such that the connector does not over-lie the flaring lower portion of the header.

A connector is provided that minimizes the surface profile of a connection between a header and a vertical member. The portion of the connector that engages the side surface of the vertical member and the horizontal member has a notched section such that the connector does not over-lie the flaring lower portion of the header.