• Terra Associates, Inc
  • Terra Associates, Inc
  • Terra Associates, Inc

Geotechnical Engineering

Terra Associates, Inc. has the tools, technology, and decades of experience, providing comprehensive geotechnical services for all development sectors. Our integrated teams perform the following tasks to ensure projects start with clear geotechnical solutions, such as soil and groundwater evaluation, foundation analysis, slope retention systems, cut-and-fill slopes, and geologic hazard identification/remediation. We can also manage instrumentation, monitoring and quality control systems during construction. Terra works closely with each client and design team to identify project needs and provide technically sound, cost-effective and constructible solutions.

The following is a comprehensive list of our other services and expertise, which are presented in professional reports and correspondences to our clients and other stakeholders:

  • Site visits to gather project requirements, data and parameters
  • Subsurface exploration and testing
  • Soil and groundwater
  • Seasonal Groundwater Monitoring
  • Infiltration Testing
  • Seismic design parameters per the current International Building Code (IBC)
  • Geologic Hazard assessment
    • Landslide
    • Erosion
    • Steep Slope
    • Seismic
    • Volcanic
    • Coal Mine
  • Site preparation and grading
  • Foundation analysis and recommendations
  • Lateral earth pressures for retaining wall design and construction
  • Mechanically stabilized earth wall designs
  • Temporary shoring wall designs
  • Subsurface drainage planning and implementation
  • Pavement design
  • Geotechnical plan review
  • Earthwork observation and testing services during construction
    • Compaction Testing
    • Shoring Observations
    • Settlement Monitoring
    • Temporary Erosion and Sedimentation Control (CESCL certified personnel)
    • Foundation observations
    • Retaining Wall construction observations
    • Excavation observations
    • Pavement, curb, and sidewalk subgrade observations
Terra Associates, Inc.
12220 113th Avenue NE, Suite 130, Kirkland, Washington 98034
Phone: 425.821.7777