Disclosed is a structural element including of interlocked resilient sheet material components, with each sheet operatively forming a component by being shaped to provide an elongate base with two opposing edges from which a first extension and a second extension respectively extend, with the second extension extending further from the base than the first extension, with the first and second extensions being provided with complimentary interlocking means operatively enabling the extensions of one sheet material component to be interlocked with the extensions of another sheet material component; with the extensions of four sheet components being interlocked, each at a right angle with at least one extension of another one of the sheet components, operatively for four sheet components to provide the structural element with an elongate open-ended core with a plurality of elongate open-ended ribs spaced around the core with each rib being longitudinally aligned with the core.

The present invention relates to a hollow boring auger for use for poles, including a first and second mounting part moveably connected, one to the other, to substantially encircle the pole. A first and second auger part are also included, correspondingly attachable to the first and second mounting part, to substantially encircle the pole, A rotation apparatus associated with the mounting parts and the auger parts is included such that in use the auger parts can be rotated about the pole to bore a hollow trench about the pole. The invention also relates to a method of use.

The present invention relates to a hollow boring auger for use for poles, including a first and second mounting part moveably connected, one to the other, to substantially encircle the pole. A first and second auger part are also included, correspondingly attachable to the first and second mounting part, to substantially encircle the pole, A rotation apparatus associated with the mounting parts and the auger parts is included such that in use the auger parts can be rotated about the pole to bore a hollow trench about the pole. The invention also relates to a method of use.

A utility pole is resistant to breakage by providing a connection between an upper and a lower portion. In many embodiments, the upper portion with an arm supporting a utility line is able to deflect relative to a lower portion at the connection and then either be replaced or restored to the upright configuration.

A self-erecting structure system including an external structure apparatus including a plurality of external structure modules, each module comprising a plurality of legs, an internal structure apparatus configured to be temporarily be positioned within an area bounded by the external structure apparatus, the internal structure apparatus comprising a plurality of internal structure modules, and a platform member comprising, an inner aperture through which the internal structure apparatus may pass, an internal structure locking device, a plurality of outer apertures through which legs of the external structure apparatus may pass, a plurality of external structure locking devices, a primary lifting system, and a secondary lifting system configured. One of the primary lifting system and the second lifting system may raise the internal structure apparatus until a lower end thereof can be fixedly attached to the platform member. The platform member is configured to fixedly attach to the internal structure apparatus.

A mobile well drilling apparatus for a drilling site with clustered wells includes a substructure. A mast includes hinging points and fixing points. The mast is hinged to the substructure via the hinging points, about which the mast rotates between a horizontal and a vertical position. A drill floor includes a first portion hinged to the mast, and a second portion fixed to the mast and moving integrally therewith; and a draw-works permanently installed on the substructure. The substructure includes first and second sub-bases. The sub-bases are parallel and spaced apart. The first portion of the drill floor includes a connection portion facing one of the sub-bases. The hinging points are connected to one of the sub-bases. In operation, the fixing points are connected to the opposite sub-base. Each sub-base includes hydraulic walking devices adapted to move the well drilling apparatus between the clustered wells on the drilling site.

A tower foundation assembly includes a foundation having a base section and a receptacle atop the base section. The receptacle of the foundation defines a bottom surface and an inner perimeter wall. The tower foundation assembly also includes a tower, such as a wind turbine tower, secured to the inner perimeter wall within the receptacle of the foundation. As such, the tower extends in a longitudinal direction from the foundation.

A tower foundation assembly includes a foundation having a base section and a receptacle atop the base section. The receptacle of the foundation defines a bottom surface and an inner perimeter wall. The tower foundation assembly also includes a tower, such as a wind turbine tower, secured to the inner perimeter wall within the receptacle of the foundation. As such, the tower extends in a longitudinal direction from the foundation.

A wind turbine foundation comprising a concrete support slab having a horizontal rebar grid therein, a concrete pedestal integral with the support slab and having vertical post tensioning elements therein and a plurality of concrete ribs on top of and integral with the support slab and integral with the pedestal, the ribs having rebar therein and extend outwardly from the pedestal, the pedestal, slab and ribs are connected to each other to form a monolithic foundation. The foundation design reduces the weight and volume of materials used, reduces cost, and improves heat dissipation conditions during construction by having a small ratio of concrete mass to surface area thus eliminating the risk of thermal cracking due to heat of hydration.

A manufacturing facility for assembling a jacket structure 3 comprising a number of subcomponents 10, said subcomponents 10 including a prefabricated brace 12 and a pair of prefabricated legs 30, 30, wherein the manufacturing facility comprises a number of first supports 20 for supporting each of the prefabricated legs 30,30, a number of second supports 40 for supporting the prefabricated brace 12 and a welding unit for welding the prefabricated brace 12 to the prefabricated legs 30,30.