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 What you don't know can hurt you when property is involved. What is under a piece of property can be as important as what is on the surface— this is especially important when construction is being considered or when there may be soil or groundwater contamination.
Geotechnical engineering characterizes the properties of earth materials and predicts the reaction to loading conditions, resulting in improved foundation design, fast-track construction time, lower costs, reduced delays and increased awareness of environmental risks.
Since 1973, GSI has been recognized as a leading expert in the geotechnical engineering field. GSI has completed geotechnical studies for over 25,000 projects across 15 states.
We maintain a large fleet of subsurface exploration equipment. Our in-house drilling offers time-efficient scheduling and the ability to mobilize (within hours) the appropriate equipment and crew. As technical experts in the industry, we offer innovative technologies such as cone-penetrometer testing with our Mobile In-Situ Testing Lab (MISL), facilitating immediate results through on-site data analysis and reduction.
Proficiencies
Site Evaluation
- Alternative Site or Route Studies
- Definition of Critical Geotechnical Parameters
- Comparative Site Evaluation Geologic
- Mapping and Profiling Seismic Risk Analysis and Liquefaction Potential
- Geologic Hazard Analyses
- In-situ Instrumentation Groundwater Evaluation
Field Exploration
- Test Boring and Core Drilling
- Specialized Soil and Rock Sampling Techniques
- Cone Penetrometer Testing
- Electrical Resistivity and Electromagnetic Surveying
- Seismic Reflection and Refraction Profiling
- Percolation and Infiltration
- Settlement Gauges
- Vane Shear
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Laboratory Testing
- Classification
- Shear Strength
- Permeability
- Consolidation
- Resistivity
- Direct Shear
- Triaxial Shear
Engineering Analysis and Design
- Settlement and/or Expansion Magnitude and Rate Evaluation
- Bearing Capacity Determination
- Pile Capacity Analysis
- Earth Structure Design Criteria
- Excavation Support Systems
- Groundwater Control and Dewatering Systems
- Seismic Response and Susceptibility
- Earth Pressures for Retaining Structures
- Pavement Thickness Design Criteria
- Design Cost Feasibility
- Design Options
- Mechanically Stabilized Earth Walls
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