Preliminary Surveys:

Preliminary geotechnical studies are smaller scale initial site reviews with limited exploration and analysis scopes that can provide a basic understanding of the geologic conditions of a proposed site before moving forward with site development plans. These studies typically include desk studies, subsurface investigations, and laboratory testing in order to provide the basics of site and soil characterization and a preliminary geotechnical report on expected conditions and foundation requirements.

The preliminary process often includes:

  • Early Site Selection
  • Limited Subsurface Evaluations
  • Preliminary Site Characterization
  • Soil & Foundation Preliminary Evaluation
  • Recommendations on Final Field Exploration Scope

Geotechnical Surveys:

Complete geotechnical studies are more comprehensive and related to a specific project. At this stage the project layout and general characteristics are know; as such, foundation recommendations of any type can be given depending on the type of soils encountered and the structural loads of the project; also general construction considerations are given.

The complete geotechnical process often includes the following items depending on type of project:

  • Early Site Selection
  • Subsurface Evaluations
  • Field Drilling and Sampling Services
  • Site Characterization
  • Construction Materials Investigation
  • Bearing Capacity
  • Soil & Foundation Evaluation
  • Shallow and Deep Foundations
  • Settlement Analysis
  • Retaining Walls
  • Slope Stability Analysis
  • Pavement Design
  • Feasibility Studies
  • General Construction Considerations
  • Geological Studies
  • Seismic Hazard and Liquefaction Analysis
  • Geohazard Assessment
  • Vibration Studies
  • Groundwater Flow Analysis

Linear Geotechnical Surveys:

Roadway, rail, pipeline, and utility infrastructure present a unique challenge for geotechnical engineering. Spanning across varying geologic conditions and terrains, these projects often require unique earthwork solutions, structural components and foundation designs and an understanding of the interaction between not only the geologic, but the environmental conditions the finished project will encounter.

Intertek-PSI has the ability to meet all of these challenges and more with geotechnical corridor studies that can include the following:

Roadway/Transportation Studies

  • Subsurface Investigations
  • Field Drilling and Sampling Services
  • Geotechnical Risk Assessments
  • Groundwater Sampling
  • Foundation, Embankment, and Retaining Wall Design
  • Flood and Stormwater Management Facilities
  • Instrumentation and Monitoring
  • Pavement Design
  • Corridor Study/Fatal Flaw Analysis
  • Borrow Studies
  • AASHTO LRFD Compliant Designs

Utility and Pipeline Corridor Studies

  • Subsurface Investigations
  • Field Drilling and Sampling Services
  • Geotechnical Risk Assessments
  • Permitting And Regulatory Compliance
  • Route Selection and Alignment
  • National Environmental Policy Act (NEPA) Compliance
  • Environmental Assessments (EA)
  • Environmental Impact Statements (EIS)
  • Wetland And Protected Species Analysis
  • Cultural Resources Evaluation
  • Groundwater Sampling
  • Foundation, Embankment, And Retaining Wall Design
  • Geotechnical quantities estimation
  • Flood and Stormwater Management Facilities


Additional Geotechnical Engineering Solutions

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