Construction Related Services

Construction observation and testing

GDI provides on-site and off-site support geotechnical services during construction phases.

These services are normally provided on behalf of the owner or designer and include observation, documentation, field testing, and certification for grading and earthwork operations, excavation shoring, dewatering systems, pile jetting and driving, drilled shaft installation, site remediation, stone columns, grouting, soil improvement, and the installation and monitoring of a wide array of geotechnical instrumentation.

Geotechnical Instrumentation & Monitoring

GDI personnel provides expertise in a broad range of field instrumentation services.
Our instrumentation capabilities are a direct result of our involvement in:


  • Construction monitoring
  • Post-construction performance monitoring
  • Forensic investigations and monitoring
  • Research and development projects.