A wind power installation foundation having a cylindrical central unit, a plurality of steel carriers which are arranged radially around the central unit and which respectively have a first and a second end, and a plurality of foundation piles. The first ends of the steel carriers are fixed to the central unit so that the second ends of the steel carriers are in the form of free ends. The second free ends of the steel carriers are respectively placed on one of the foundation piles.

A pile head analysis system captures a plurality of images of a construction site including a pile using a camera mounted on an unmanned aerial vehicle (UAV), acquires the images, generates a three-dimensional model of the construction site, detects a pile head from the three-dimensional model, and determines consistency between the detected pile head and preliminarily acquired design information.

An example embodiment of the present invention provides a pole cap for covering an end of a pole. The pole cap comprises a sheet that includes a central portion, a first strip, and a flap that has a slit. The central portion is configured to cover a base surface of an end of a pole. The first strip is configured to fold over an edge of the base surface and circumferentially wrap around a portion of a curved surface of the pole. The flap is configured to fold over the edge of the base surface.

The Open End Friction Pile comprises of four steel plates, four brackets, and one driving head. The steel plates have a first bend line and a second bend line that are equidistant from a distal end. The first bend line and second bend line of the steel plates are equidistant from each other creating a center portion. The brackets have a first bend line and a second bend line that are equidistant from a distal end. The first bend line and second bend line of the brackets are equidistant from each other creating a center portion. The bracket has a third bend line along the center portion. One bracket is connected to one steel plate along the distal ends and center portion. All four steel plates and four brackets concurrently connect along the distal ends to form two open-ends. A driving head is connected covering the top open-end.

This disclosure relates to the design of pile cap assemblies configured to rotatably couple the torque tube of a photovoltaic solar tracker to multiple support piles that elevate the torque tube above the ground. The pile cap assemblies define low friction bearings that allow the torque tube to rotate smoothly within the low friction bearings. The pile cap assemblies also include numerous mounting hole configurations that allow for adjustment of a position of the pile cap assemblies with respect to the support piles. This allows for any small variation in positioning of the support piles to be accommodated.

A removable pile cap is disclosed for use with a pile that is driven into the ground. The removable pile cap comprises a top member and at least one pile member positionable between at least a first orientation and a second orientation. The top member and the at least one pile member are connected together. When the at least one pile member is in the first orientation it is mountable over the pile's upper end. When the at least one pile member is in the second orientation it maintains frictional engagement with at least part of the pile's above-ground portion. The top member may be supported by the pile's upper end and is capable of accepting one or more structural foundation elements.

An example embodiment of the present invention provides a pole cap for covering an end of a pole. The pole cap comprises a sheet that includes a central portion, a first strip, and a flap that has a slit. The central portion is configured to cover a base surface of an end of a pole. The first strip is configured to fold over an edge of the base surface and circumferentially wrap around a portion of a curved surface of the pole. The flap is configured to fold over the edge of the base surface.

A root-like expandable foundation pile is disclosed. It includes a movable drill, a foundation body, a number of foundation blade, a foundation cap and a stopper. The foundation blades are designed to have the warped portion protruding outward, so that they can expand outward by rotating the root-like expandable foundation pile in a direction different from that makes the root-like expandable foundation pile drilled into the soil. Extra bearing capacity can be available from the expanded foundation blades. Time and cost of installation can both be saved.

A helical pile assembly includes a plate and a rod extending from the plate. The rod includes threads. A piling is configured to be disposed in the ground and support a load. A connection device is positioned around the rod and configured to transmit torque to the piling. The connection device includes threads that are configured to engage the threads of the rod.

The present disclosure provides a lateral support for a shaft of a helical pile, the lateral support including a tubular portion for receiving the shaft and a plurality of fins extending from the tubular portion.