Dynamic Probings, whether Heavy, Medium or Light type (DPH, DPM, DPL), are state-of-the art methods for subsoil investigation used by Geotechnical Engineers in Europe. Dynamic Probings are used worldwide to determine geotechnical design parameters, and in Europe EC-7-2 (Ground Investigation and Testing) and EC-7-1 (Geotechnical Design) are the-up-to date standards. The uses of dynamic probings are important since the Cone Penetration Test (CPT) is found to be good only in soft to stiff cohesive soils and loose to medium dense sands.
Since the CPT cannot be used in dense sands, gravel or bedrock due to very high penetration resistances, DPH, DPM and DPL are mainly used for geotechnical investigations. In this study based on the approach by Zweck, who defined N10*=10 / e (e = cm of the probe penetration per blow), the use of an automated data acquisition system was further developed to eliminate the influence of operators logging the data manually. By using a Field Geo-Measuring system (FGM) for dynamic probings, the quality, comparability and interpretability of the acquired data can be tremendously increased and, therefore, the automated system should be incorporated into EC 7-2 as a standard procedure for dynamic probings.
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