The invention relates to a foundation engineering method and a construction apparatus for producing a columnar structure in the ground, in which a foundation engineering tool is driven in a rotating manner about an axis of rotation and introduced with a feeding motion into a ground, wherein the columnar structure is produced in the ground. According to the invention it is provided that during the production of the columnar structure a rotating motion and a feeding motion of the foundation engineering tool are recorded over time and forwarded to an evaluation unit, in that by means of a sensor means at least one further processing parameter is recorded over time during the production of the columnar structure in the ground and is forwarded to the evaluation unit and in that by the evaluation unit a three-dimensional model of the columnar structure is produced and displayed.

The disclosure relates to a system for drilling a vertical well in soil according to a substantially vertical theoretical drilling trajectory comprising a drilling device including a hollow core having a longitudinal axis, the hollow core being provided with a drilling tool; a rotating driving device exhibiting an active state in which the driving device is oriented with respect to the soil in an angular correction position, and a passive state in which the driving device does not modify the displacement trajectory of the drilling device; a device for measuring the deviation of the hollow core; a control device configured to make the driving device swivel when a deviation is measured, in order to bring it in its active state in an angular correction position determined such that, considered in the horizontal plane, the trajectory correcting direction associated with the angular correction position is opposite to the deviation direction.

The disclosure relates to a system for drilling a vertical well in soil according to a substantially vertical theoretical drilling trajectory comprising a drilling device including a hollow core having a longitudinal axis, the hollow core being provided with a drilling tool; a rotating driving device exhibiting an active state in which the driving device is oriented with respect to the soil in an angular correction position, and a passive state in which the driving device does not modify the displacement trajectory of the drilling device; a device for measuring the deviation of the hollow core; a control device configured to make the driving device swivel when a deviation is measured, in order to bring it in its active state in an angular correction position determined such that, considered in the horizontal plane, the trajectory correcting direction associated with the angular correction position is opposite to the deviation direction.

A system for injecting expanding resins into soils to be consolidated, includes a pump apparatus which is operationally associated, at a delivery port, with a tubular element which can be inserted into a respective hole defined in the soil to be consolidated and is adapted to send to the tubular element a mixture at a preset supply pressure. The tubular element has a number of holes, at least two of the holes including respective calibrated holes.

A system for injecting expanding resins into soils to be consolidated, includes a pump apparatus which is operationally associated, at a delivery port, with a tubular element which can be inserted into a respective hole defined in the soil to be consolidated and is adapted to send to the tubular element a mixture at a preset supply pressure. The tubular element has a number of holes, at least two of the holes including respective calibrated holes.

The disclosure provides a measurement set-up for a return cement suspension, a construction site arrangement with a measurement set-up, and a method which can be carried out inexpensively, reliably, and easily.

A pile includes a first pile section having a first end that engages a supporting medium and an opposing second end. A first end of a second pile section is engageable with the second end of the first pile section, each of the first and second pile sections having mating end fittings that create an in fit. A sleeve overlays the first and second engaged ends of the first and second pile sections. At least one through hole aligned with at least one corresponding through hole of the first pile section is sized for receiving a fastener far securing the sleeve to the first pile section. In another version, the ends of the pile section are engaged in contact while the overlaying sleeve has a pair of interlocking sleeve or coupler portions that are configured to provide torsional resistance. Additional pile sections can be sequentially attached to the second pile section.

A pile includes a first pile section having a first end that engages a supporting medium and an opposing second end. A first end of a second pile section is engageable with the second end of the first pile section, each of the first and second pile sections having mating end fittings that create an in fit. A sleeve overlays the first and second engaged ends of the first and second pile sections. At least one through hole aligned with at least one corresponding through hole of the first pile section is sized for receiving a fastener far securing the sleeve to the first pile section. In another version, the ends of the pile section are engaged in contact while the overlaying sleeve has a pair of interlocking sleeve or coupler portions that are configured to provide torsional resistance. Additional pile sections can be sequentially attached to the second pile section.

The invention relates to a method for producing a component, such as a structural member, free of toe pressure, including the steps of: introducing a soluble material into soil and introducing a component into the soil on the soluble material.

The invention relates to a method for producing a component, such as a structural member, free of toe pressure, including the steps of: introducing a soluble material into soil and introducing a component into the soil on the soluble material.