Cone penetration tests according to DIN EN ISO 22 476-1 (DIN 4094-1) with electronic measurement of the peak resistance and local skin friction. This procedure is an economic, conclusive and most of all reliable measuring method to examine the structure of the soil and its soil-mechanical properties.

Window sampling according to DIN EN ISO 22475-1 (DIN 4021), Ø 36 – 80 mm

with extraction of disturbed soil samples, preparation of layer directories according to DIN 4022

Dynamic probing DPL and DPH according to DIN EN ISO 22476-2 (DIN 4094-3)

are indirect exploration methods to determine the deposit thickness of the non-cohesive ground.

Open-end test of USBR, in situ permeability tests for the evaluation of the kf value.