A well-planned site investigation is the foundation of every reliable ground investigation report. We design the appropriate investigation programme — boreholes, cone penetration tests (CPT/CPTu), percussion drilling and laboratory testing — tailored to the project, the geotechnical category and the regulatory requirements.
Our Services in Site Investigation
- Conceptual design of the investigation programme based on geological context and project requirements
- Determination of borehole positions, depths, sampling intervals and CPT/CPTu locations
- Specification of laboratory tests (oedometer, triaxial, Atterberg limits, grain size distribution)
- Preparation of tender documents for site investigation contractors
- Comparison and evaluation of contractor offers
- Site supervision during fieldwork
- Quality control of soil samples, drilling logs and laboratory results
- Integration of the data into the geotechnical design
Investigation Methods
- Boreholes — rotary core drilling, auger drilling, dynamic probing
- Cone penetration tests (CPT/CPTu) — to DIN EN ISO 22476-1, including pore pressure measurement
- Percussion drilling (RKS) — for cost-effective preliminary investigations
- Geophysical methods — for special applications
- Groundwater observation wells — for hydrogeological monitoring
Applications: Independent site investigation planning for contractors with self-tendering obligations · Investigation prior to a ground investigation report · Supplementary investigations on existing data sets · Tender support for public clients