The invention relates to a construction method, in which an excavation pit is produced in the ground and in the excavation pit foundation elements are produced at predetermined working points with at least one working apparatus. According to the invention provision is made in that in a computer unit the dimensions of the excavation pit, the working points and the dimensions of the at least one working apparatus are entered and in that in the computer unit a required workspace for the at least one working apparatus and an open space in the excavation pit are determined automatically.

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 aluminosilicate Pozzolan mineral and granular material such as sand.

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 aluminosilicate Pozzolan mineral and granular material such as sand.

A drilling machine (10) for making an excavation in ground in a drilling direction that is substantially vertical, the drilling machine including: an anchor module (22) having at least one anchor element for preventing the anchor module from moving relative to the walls of the excavation in the drilling direction, the anchor module having a longitudinal direction that is substantially vertical; a drilling module (12) provided with cutter members, the drilling module being movable in translation relative to the anchor module in the drilling direction; and a movement device (50) arranged between the anchor module and the drilling module in order to move the drilling module in translation relative to the anchor module in the drilling direction. The machine is suspended from a lift cable (70) that is fastened to the drilling module (12).

A drilling machine (10) for making an excavation in ground in a drilling direction that is substantially vertical, the drilling machine including: an anchor module (22) having at least one anchor element for preventing the anchor module from moving relative to the walls of the excavation in the drilling direction, the anchor module having a longitudinal direction that is substantially vertical; a drilling module (12) provided with cutter members, the drilling module being movable in translation relative to the anchor module in the drilling direction; and a movement device (50) arranged between the anchor module and the drilling module in order to move the drilling module in translation relative to the anchor module in the drilling direction. The machine is suspended from a lift cable (70) that is fastened to the drilling module (12).

A multilayer integral geogrid, including one or more cellular layers, has a plurality of oriented multilayer strands interconnected by partially oriented multilayer junctions with an array of openings therein. The multilayer integral geogrid having one or more cellular layers is produced from a coextruded or laminated multilayer polymer starting sheet. The integral geogrid has a multilayer construction, with at least one outer layer thereof having the cellular structure. By virtue of the cellular layer structure, the multilayer integral geogrid provides for increased layer vertical compressibility under load, resulting in enhanced material properties that provide performance benefits to use of the multilayer integral geogrid to stabilize and strengthen soil, aggregates, or other particulate materials.

A retaining wall system, retaining wall panel, and method of constructing a retaining wall, wherein panels of the retaining wall define an arched or curved profile in plan view, for example following a catenary curvature, with the wall panel curvature being concave in a direction extending into the backfill area behind the retaining wall. The curvature resists backfill loading on the panel and evenly distributes the load across the panel without significant stress concentrations and transfers the load to posts or columns to which the panels are mounted.

The invention relates to a system for producing an injection silicate gel solution for injection into a soil, comprising a filtering device through which a mixing water can flow for pretreatment, wherein the filtering device comprises at least one filter element for ion exchange, an admixing device for metered admixing of a curing agent, a feeding device for feeding liquid silica sol into the pretreated mixing water, a feeding device for feeding liquid sodium silicate into the pretreated mixing water, and a mixing device for mixing and homogenizing the fed components with the pretreated mixing water for forming an injection silicate gel solution.

A bell hole box with an open bottom for protecting construction workers from wall cave-in when working below a surface of the Earth may utilize two, opposing, generally concave walls with generally straight panels portions. The two walls may be connected using multiple spreaders that are pinned or connected to each of the two, opposing walls. Each longitudinal end of the bell hole box is open to permit passage of a pipeline through it. Numerous vertical guard posts may be connected around a top frame rail and joined together with chains. The bell hole box may be lifted in and out of a hole with mounted lifting hooks.

The invention relates to a drilling machine (10) for making an excavation in ground in a drilling direction that is substantially vertical, said drilling machine comprising: an anchor module (22) having at least one anchor element for preventing the anchor module from moving relative to the walls of the excavation in the drilling direction, the anchor module having a longitudinal direction that is substantially vertical; a drilling module (12) provided with cutter members, the drilling module being movable in translation relative to the anchor module in the drilling direction; and a movement device (50) arranged between the anchor module and the drilling module in order to move the drilling module in translation relative to the anchor module in the drilling direction.

The invention is characterized by the fact that the machine is suspended from a lift cable (70) that is fastened to the drilling module (12).