Geotechnical Engineering

We specialize in seismic evaluation and retrofit of earth dams, tall buildings, and other critical infrastructure. Our geotechnical practice includes a full range of services from site investigation to performance-based foundation evaluations. Slate offers a complete team of geotechnical engineers, geologists, and seismologists that are adept at developing project scope and planning exploration programs, directing field drilling and sampling operations, and performing engineering analysis to support a variety of projects and owners. Slate’s geotechnical engineers and geologists develop site-specific solutions and comprehensive assessments using the latest modeling and analytical tools.

Slate places a high priority on the safety of our staff and our subcontractors and promotes a proactive health and safety practice in all our work activities to protect people and property.


  • Desktop studies/geotechnical due diligence
  • Subsurface investigation and characterization
  • Geotechnical data management
  • Geotechnical instrumentation installation, monitoring and assessment
  • Seismic retrofit analysis and design
  • Geotechnical earthquake engineering
  • Lateral earth pressure characterization
  • Excavation shoring and dewatering
  • Foundation design and building settlement assessment
  • Deterministic and Probabilistic Liquefaction and lateral spreading analysis
  • Geologic hazard identification and assessment
  • Static and seismic slope stability analysis
  • Numerical modeling
  • Soil-structure interaction
  • Ground improvement selection
  • Geotechnical risk analysis
  • Forensic analysis

Representative Projects