The invention is an application that completely alter the operating principle and load transfer mechanism of the anchorage technique used in the field of civil engineering, in particular at the excavation bracing and slope stability applications with a novel root zone apparatus.

A wireguard subassembly includes a first circumferential segment defining a circumferential direction, a first near end, a first far end, and a first cleat portion disposed circumferentially between the first near end and the first far end; and a second circumferential segment defining a second near end, a second far end, and a second cleat portion disposed circumferentially between the second near end and the second far end. The second cleat portion is circumferentially aligned with the first cleat portion.

A helical pier and extension shaft, one end of which is formed with a thickened hexagonally shaped female end coupler using a hot forging process that swedges and compresses the walls of the female coupler into a thickened hexagonal configuration, with subsequent heat treatment to recover and enhance yield and tensile strength to the entire main body section and female end coupler of the helical pier and extension shafts. A corresponding hexagonally shaped male coupler may be milled and inertia friction welded to the opposite end of each extension shaft, or alternatively hot forged and internally upset as an integral homogeneous part of each extension shaft, thereby completing construction of the extension shaft with opposing corresponding male and female hexagonal couplers. The forgoing helical pier has particular benefits in applications requiring deep soil penetration and/or when using a grouted helical pier system.

A coupled shaft assembly for a foundation support system includes conical-shaped inner and outer couplers with mating helical ribs and grooves, and an anti-reverse element extending through different shaped openings in the inner and outer couplers that accommodates a limited degree of relative rotation of the couplers and thereafter precludes further relative rotation and an undesirable disengagement of the inner and outer couplers when subjected to reverse rotation.

A pile to be inserted into a beforehand excavated hole, includes a main body being comprised of a hollow pipe, a circular bottom plate fixed at a lower end of the main body coaxially with the main body, a through-hole being formed therethrough outside of the main body, a hollow test pipe having an outer diameter such that the test pipe can be detachably inserted into the through-hole, and a cap being attached to a lower surface of the bottom plate so as to close the through-hole, S1:S2=W1:W2, wherein S1 indicates a surface area of the bottom plate, S2 indicates a surface area of the cap, W1 indicates a weight of a second drop hammer to fall in the main body, and W2 indicates a weight of the first drop hammer.

A building element for coupling with other building elements to erect a retaining wall. Exemplary building elements have receiving spaces for receiving increased weight of fill material to provide increased stability. Optionally, each building element can have an enlarged face profile that provides efficiency in the shipping and assembly process. Optionally, each building element can define alignment voids that receive portions of alignment posts for ensuring vertical alignment between adjacent building elements or portions of building elements.

A system and method to create or elevate a berm of a liquid retention facility by placement of lightweight fill material anchored by impervious liner material(s). The liner materials can be part of the liquid retention pond. The system and method can also be used to elevate the height of the berm in combination with impervious liner retention material. By constructing the berm system on an existing berm, earth embankment or levee, the effective height of the system structure can be increased. The liquid impervious liner material provides a watertight surface, joining media, and the anchoring of the lightweight fill material to the existing berm. The system may use solid wall hollow body structures. The system may also use flexible and liquid porous geotextile structures including geotubes. The liquid impervious liners retain the liquid in the retention pond.

A post foundation system is provided. The system has a shaft with a helical disk attached to one end and a post support attached to the other end. The helical disk drives the shaft into the ground as a rotational force is applied to the shaft. A fin section is rotatably coupled about the shaft between its first and second ends. The fin section can have one or more fins extending outwardly from the shaft. The fin section engages the ground to stabilize the post foundation system as the shaft of the post foundation system is driven into the ground.

A coupled shaft assembly for a foundation support system includes inner and outer couplers with mating helical ribs and grooves, and spring element that resiliently interlocks the inner and outer couplers in an axial direction. Built-in anti-reverse rotation elements in each coupler accommodates a limited degree of relative rotation of the couplers and thereafter precludes further relative rotation that could otherwise negatively impact the spring element and lead to an undesirable disengagement of the inner and outer couplers.

A double raft foundation for buildings includes: a lower raft, a layer of a material with a low friction coefficient applied on the lower raft, a platform having slabs of material with a low friction coefficient, slidingly disposed on the layer, an upper raft joined with the slab platform and a superstructure joined with the upper raft; wherein the upper raft is disposed on the lower raft in such manner that, in case of an earthquake, the platform of slabs of the upper raft can slide slidingly on the layer of the lower raft, allowing the upper raft to move relatively with respect to the lower raft.