Geotechnical Engineering & Consulting Services


G&S has a long history of providing quality service in all phases of geotechnical engineering. We are FDOT pre-qualified to conduct geotechnical and materials testing work related to highway design and construction. Additionally, our engineers have served private developers, industrial complexes, government agencies, and other professionals. They have worked on projects ranging from high-rise buildings, industrial developments, and commercial facilities, to solid and hazardous waste landfills and stormwater management systems.

G&S’s professional engineers and geologists are registered throughout the Gulf Coast and southeastern United States. G&S’s offices maintain in-house drilling departments and full-service, certified geotechnical laboratories. With this type of in- house support, G&Sprovides its clients with a multitude of capabilities ranging from preliminary investigations through final design.


Quite often, civil engineering design requires special considerations for proper performance and economical construction. A few of the services that G&Sprovides in this area are presented below:

Exfiltration Analysis
Permeability Evaluations
Underdrain Evaluation and Design

Pavement Design
Groundwater Modeling
Borrow Pit Studies

Estimated Seasonal High Groundwater Levels


The development of new sites in the southeast region requires several studies to ensure that the site is compatible with its intended use. These studies include characterizing soil and groundwater conditions, evaluating the potential for sinkhole activity on the site, and location of muck on the site that could adversely affect performance and construction costs of structure and pavement areas. A partial listing of our pre-development services is presented below:

  • Site Feasibility Studies
  • Soil Mapping and Classification
  • Sinkhole Evaluation
  • Landfill Site Selection Pre-Qualification Assessment
  • Muck Probes and Mapping

G&Sroutinely provides soil investigations and geotechnical design services for construction projects where cost-effective design is essential to the successful performance of foundations, walls, dams, and other structures that rely upon proper characterization of subsurface soil and groundwater conditions. A list of our capabilities in this area is provided below:

  • Subsurface Investigations
  • Foundation Recommendations
  • Specialized Foundation Design
  • Subsurface Geophysical Surveys
  • Settlement Analysis
  • Stability Analysis
  • Retaining Wall Design
  • Cone Penetrometer Soundings
  • Seepage Analysis
  • Sinkhole Remediation Design
  • Structural Recommendations
  • Value Engineering Analysis
  • Earth Instrumentation
  • Earth Dam Design
  • Shallow and Deep Foundation Design
  • Foundation Settlement Magnitude and Time-Rate Predictions
  • Landfill Siting Studies
  • Groundwater Studies

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