boreholes in accordance with DIN EN ISO 22475-1 and 14 heavy dynamic probings in accordance with DIN EN ISO 22467-2 were carried out on the unpaved area for the soil investigations. Due to the very loosely packed fillings found here in the area of the building plots, an impulse compaction was successfully carried out, which made it possible for the individual houses to be laid on a shallow foundation.

ramming posts. The alternating layers of peat and perimarine sands and silt that occur here initiated a necessary elevation of the terrain and, accordingly, an up to 3.50 m deep integration of the ramming posts into the subsoil.

Here, sediment samples are taken from the seabed near the coast.

and the modification of overhead line and signal masts, as well as the construction of a pedestrian underpass at the Oberer Bahnhofstraße / Leonharderweg level crossing.

For the geotechnical investigation, two dry boreholes to a depth of 20 m, 80 small-diameter percussion boreholes according to DIN EN ISO 22475, and 80 medium to heavy dynamic probing tests according to DIN EN ISO 22476-2 were carried out.

due to the challenging soil conditions, vibro-compaction columns from MENARD were used to ensure an optimal foundation for the wind turbines.

Our services included soil investigation, construction supervision, foundation inspections, and dynamic plate load tests for quality assurance and verification of the soil's load-bearing capacity.

Precise execution and close coordination among all parties involved resulted in a technically sophisticated and sustainable solution for the secure foundation of the wind turbines.

and reliably assess settlement conditions.

A steel pipe DN406, material P355N/NH/NL2 according to guideline 877.2203A03, is planned as the casing pipe. The horizontal drilling will be carried out as a pilot pipe jacking with soil displacement according to the guidelines DVGW GW304 / DWA-A125 304, procedure 6.1.3.2.2, to ensure precise and safe pipe installation.

Through the combination of geotechnical testing, standard-compliant execution, and innovative jacking technology, a stable, durable, and cost-effective ground solution was achieved.