A post-tensioning system that is configured for use with concrete wind turbine foundation designs to post-tension the foundations and reduce the amount of reinforcement steel that is needed compared to conventional non-post-tensioned, steel reinforced concrete foundation designs. In the case of an inverted T gravity foundation, the post-tensioning system described herein reduces the amount of reinforcement steel that is required by 30-40 tons.

A cement form made at least in part of a foam material can be used to form a cement foundation of a structure. The cement form can include a cement facing surface oriented vertically and configured to support a volume of cement. The cement can also include a ground facing surface oriented horizontally and configured to contact a ground support surface.

A cement form made at least in part of a foam material can be used to form a cement foundation of a structure. The cement form can include a cement facing surface oriented vertically and configured to support a volume of cement. The cement can also include a ground facing surface oriented horizontally and configured to contact a ground support surface.

A modular support frame comprises trusses, purlins transverse to the trusses, and vertical posts supporting the various trusses. A supply of wedges permits flange-type connectors to be joined to complementary connectors throughout the foundation. The trusses are arranged end-to-end in parallel rows, each row comprising at least one pair of trusses or more depending on the desired size of the foundation. Vertical posts are positioned between the ends of each of the trusses within a row and at opposing ends of the row, and each post comprises a pair of flange-type connectors at predetermined heights. Each of the trusses is terminated at either end with a pair of complementary connectors such that adjacent in-line trusses can be mounted to the post between them and the outer pair of trusses can be mounted to the posts terminated the row. Purlins extend perpendicularly between the trusses in adjacent rows to reinforce the frame. To that end, the trusses comprise flange-type connectors and the purlins are terminated at either end with complementary connectors.

A modular support frame comprises trusses, purlins transverse to the trusses, and vertical posts supporting the various trusses. A supply of wedges permits flange-type connectors to be joined to complementary connectors throughout the foundation. The trusses are arranged end-to-end in parallel rows, each row comprising at least one pair of trusses or more depending on the desired size of the foundation. Vertical posts are positioned between the ends of each of the trusses within a row and at opposing ends of the row, and each post comprises a pair of flange-type connectors at predetermined heights. Each of the trusses is terminated at either end with a pair of complementary connectors such that adjacent in-line trusses can be mounted to the post between them and the outer pair of trusses can be mounted to the posts terminated the row. Purlins extend perpendicularly between the trusses in adjacent rows to reinforce the frame. To that end, the trusses comprise flange-type connectors and the purlins are terminated at either end with complementary connectors.

A support stand (2) and a foundation system (1) for a building comprising the support stand (2) attachable to a structural beam (3) in which the support stand (2) comprises a pedestal (6) and a beam carrier (7) mounted on the pedestal (6) wherein the beam carrier (7) comprises a wingnut construction defining at least one substantially vertical wing (19,33) connectable with a structural beam (3).

A support stand (2) and a foundation system (1) for a building comprising the support stand (2) attachable to a structural beam (3) in which the support stand (2) comprises a pedestal (6) and a beam carrier (7) mounted on the pedestal (6) wherein the beam carrier (7) comprises a wingnut construction defining at least one substantially vertical wing (19,33) connectable with a structural beam (3).

Disclosed is a foundation unit for supporting a structure, the foundation unit provided in a plurality of parts, arranged to be coupled together before use, wherein the foundation unit is arranged to be at least partially buried in, and to receive, material.

A construction module for a structure, comprising: a formwork member that includes a base, a pair of parallel side walls that extend upwardly from the base, and a pair of parallel end walls. The base, the side walls and the end walls define a cavity for reinforcement and concrete. A reinforcement member includes an upper portion and a lower portion. When the reinforcement member is located in the cavity and concrete fills the cavity, the lower portion of the reinforcement member and the concrete define an elongate beam.

A construction module for a structure, comprising: a formwork member that includes a base, a pair of parallel side walls that extend upwardly from the base, and a pair of parallel end walls. The base, the side walls and the end walls define a cavity for reinforcement and concrete. A reinforcement member includes an upper portion and a lower portion. When the reinforcement member is located in the cavity and concrete fills the cavity, the lower portion of the reinforcement member and the concrete define an elongate beam.