Geotechnical Services
We mitigate geological risk through advanced subsurface exploration and soil mechanics.
Every great structure is only as reliable as the ground that supports it. At G.M. Selby, our Geotechnical department specializes in decoding the complexities of the earth. In regions like South Florida, where limestone formations, varying sand densities, and high water tables create unique challenges, professional geotechnical insight is not just a requirement—it is a safeguard for your investment.
Core Capabilities
Providing the critical geological data and engineering analysis required to ensure structural stability from the ground up.
Subsurface Investigation & Exploration
- Standard Penetration Testing (SPT) to determine soil density and consistency.
- Cone Penetration Testing (CPT) for high-resolution soil stratigraphy.
- Rock coring and sampling of Florida’s unique limestone and caprock formations.
- Groundwater level monitoring and piezometer installation for seasonal fluctuation analysis.
Foundation Engineering & Analysis
- Allowable bearing capacity analysis for shallow foundation systems (spread footings, mats).
- Deep foundation design and recommendations (auger-cast piles, driven piles, caissons).
- Settlement analysis and predictions to prevent long-term structural distress.
- Slab-on-grade design parameters and subgrade stabilization strategies.
Sinkhole Evaluation & Remediation
- Geophysical surveys, including Ground Penetrating Radar (GPR) and Electrical Resistivity.
- Evaluation of sinkhole activity indicators in accordance with Florida statutes.
- Design of subsurface grouting and stabilization plans to remediate identified voids.
- Risk assessment and expert consultation for insurance and property acquisitions.
Laboratory Soil Mechanics Testing
- Atterberg Limits testing to determine soil plasticity and expansion potential.
- Sieve and hydrometer analysis for precise grain-size distribution.
- Moisture-density relationship (Proctor) testing for compaction control.
- Unconfined compressive strength testing of rock and soil samples.
Technical Expertise & Approach
A Data-Driven Framework for Foundation Success
Field Mobilization
Our drill teams mobilize to the site to perform strategic borings based on the proposed building footprint.
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Lab Characterization
Collected samples are processed in our laboratory to identify specific engineering properties (strength, compressibility, etc.).
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Engineering Analysis
Our senior geotechnical engineers perform complex calculations to model how the soil will react to structural loads.
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Final Recommendation
We deliver a comprehensive Geotechnical Engineering Report (GER) that provides clear, code-compliant instructions for the design and construction teams.
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Over 25 years of innovation, delivering tailored engineering and consulting solutions worldwide.
Engineering the Future
Shaping the Modern Landscape
Geotechnical Excellence in Action: Case Study
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