A system and method for installing an aggregate pier in a soil matrix includes a pipe configured to interface with a torque driver for rotating the pipe. A helix is disposed on the pipe and configured to advance/withdraw the pipe based on direction of rotation. A compacting device is disposed between the distal end of the pipe and the helix. It extends radially outward and upward. In some embodiments, the compacting device is configured as a frustum. A lift in an aggregate pier is formed by rotating the pipe in a second direction to withdraw a portion of the pipe from the soil matrix thereby creating a void; (b) filling the void with aggregate; (c) rotating the pipe in the first direction to advance the pipe. The compacting device contacts the aggregate disposed in the void and imparts an axial and radial force.

Disclosed herein is a soil-displacement drill for soil-displacing drilling in a surface in order to form a foundation pile, comprising a drill pipe, a drill head at an end of the drill pipe with several flap leaves which are pivotable between a closed position for closing off the end of the drill pipe and an open position for making this end freely accessible, and one or several closing elements to keep these flap leaves in their closed position and prevent pivoting of the flap leaves which are configured to fail during drilling into the surface in such a way that these closing elements do not impede pivoting of the flap leaves. Additionally, disclosed herein is an assembly of a drill head and one or several closing elements for such a soil-displacement drill, a method for soil-displacing drilling, and a method for converting a soil-displacement drill to form such a soil-displacement drill.

A foundation engineering machine and method for producing a trench in the ground include a substantially vertical mast, a diaphragm wall apparatus displaceably supported in a longitudinal direction of the mast for producing the trench, and a bar-shaped holder, at the lower end of which the diaphragm wall apparatus is mounted and with which the diaphragm wall apparatus is linearly displaceable along the mast. An upper first clamping sledge with a first clamp for releasably clamping the bar-shaped holder and a lower second clamping sledge with a second clamp for releasably clamping the bar-shaped holder are movably supported on the mast. The first clamping sledge and the second clamping sledge are movable relative to each other, and the lower second clamping sledge has a connector for mounting an additional lifting device disposed on the ground, with which a force can be applied in the longitudinal direction onto the second sledge.

The present invention relates to a self-supporting, prefabricated, folding form structure or mechanism to be used in the construction industry. It is based on various types of geometries, providing enhanced strength and stability for the concrete and other building material casting process. The object of this invention is a foldable, prefabricated, self-supporting form and does not require a structure. It is configured in a variety of geometric shapes and is based on structural elements that have internal casting chambers or ducts interconnected between each other through perforated holes. This is done by means of internal assembly channels or cavities forming casting chambers. The casting chambers are interconnected with each other, through holes drilled in the structural elements. This way the form features an assembly between its walls through cracks or assembly cuts, creating an architecture of superior engineering that provides higher resistance and stability.

The invention relates to a foundation (10) for a wind turbine substantially consisting of a concrete-cast plinth-like portion (11) having at least one cast-in-situ tower fastening element (60) located therein on which a tower of the wind turbine can be arranged and to which the tower of the wind turbine can be connected, and of a second, substantially horizontally extending portion (12) as planar foundation body, wherein the second portion (12) is arranged connected to the first portion (11), and wherein the second portion (12) of the foundation (10) substantially consists of at least three prefabricated horizontal elements (22), preferably made of reinforced concrete. There is provision here that the at least three horizontal elements (22) each have at least one base portion (23) with a stiffening element (26) extending substantially vertically thereon, that the horizontal elements (22) can be arranged in dependence on the parameters of the tower to be erected, in particular the tower radius, and that there is in each case a distance (B) between the horizontal elements (22).

A foundation system for supporting a structure may include a main post, a racking post, and a barb assembly. The main post may include an upper section and a lower section below the upper section. The racking post may be telescopically connected to the upper section of the main post. The barb assembly may be connected to the lower section of the main post. The barb assembly may be configured to move from an unexpanded state to an expanded state, thereby forming a wedge shape at a lower section of the main post.

A manhole rehabilitation system where in one example an existing cross-pipe is exposed and a manhole base and riser are cast around and above the existing cross pipe to form a manhole. In one example an FRP base liner and FRP riser liner are placed before casting in place. In one example casting is made of an aggregate. In one example, a collar and manhole cap rest upon the casting, and are supported thereby such that the liner need not be structural. In one example an existing pipe or manhole forms the outer surface of the casting. In one example shoring is placed and used as the outer surface of the casting.

System and means soil stabilization and moisture control for building foundations including methods and systems for stabilization moisture in a site for building foundation by applying soil moisture stabilization material in various forms, a preferred stabilization material being a mixture of aluninosilicate Pozzolan mineral and granular material such as sand.

A reinforcement element for a diaphragm wall including a reinforcement cage, the reinforcement element further including a seal-carrier provided with a mounting part for receiving at least one seal, which is elongated, the seal-carrier being fixed to the first end part of the reinforcement cage and extending along the longitudinal direction of said reinforcement cage, the seal-carrier defining a housing for receiving the seal, at least a first part of which is surrounded by a sacrificial material.

A hybrid foundation structure includes a first perforation hole formed in the ground, at least one second perforation hole formed adjacent to the first perforation hole on a side surface of the first perforation hole, and a first pile and a second pile formed by mixing and injecting soil and soil solidifying agent into the first perforation hole and the second perforation hole.