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Geotechnical Consultants Inc. (GCI) provides a complete range of practical, cost-effective geotechnical engineering, environmental,building envelope consulting, and construction materials engineering and testing services to help clients throughout the Midwest and Mid-Atlantic regions manage risk and make timely informed decisions.

With GCI's sound engineering principles, in-depth knowledge of regulatory requirements, experienced personnel and innovative approach, clients trust that their projects will be completed on time with future risk mitigated.








geotechnical engineering

Geotechnical Engineering

GCI provides a broad range of geotechnical engineering expertise services, subsurface exploration and soil testing to assist clients in managing underground risk.

environmental engineering

Environmental Consulting

GCI provides a full range of environmental assessment, inspection and remediation services to assist clients throughout environmental due diligence, design, clean-up and construction.

engineering field services

Field Services

GCI's Construction Materials Engineering and Testing (CoMET) services provide continuity for clients from design throughout construction, keeping clients' construction projects on track with our knowledgeable and experienced problem-solving approach.

special inspections

Special Inspections

Special Inspections involve the evaluation of materials, workmanship, and the interpretation of contract documents. Chapter 17 of the Ohio Building Code details the required Special Inspections for 20 categories of construction work.

steel nde


GCI's structural steel testing and non-destructive examination (NDE) testing staff are trained and certified to provide a broad range of observation and testing services to keep clients' construction projects on track and compliant with applicable codes.

building envelope

Building Envelope Consulting

BEC services during design and construction provide independent review, testing, and observation to confirm that building envelope elements are installed according to specifications, the building performs as designed, and costs are minimized.

drone imaging

Drone Imaging Services

GCI uses advanced drone imaging to collect data that informs and supports the work of our engineers, technicians and building envelope consultants. High resolution drone-acquired imagery helps make human work safer, more efficient and more accurate.

post tensioned concrete

Post-Tensioned Concrete

Post-tensioned (PT) concrete construction is a method of strengthening concrete or other materials with high-strength steel cables or strands, commonly referred to as tendons.

roller compacted concrete

Roller Compacted Concrete

Roller Compacted Concrete (RCC) is a type of pavement used for heavy-use or industrial pavement when strength and durability are especially important.

GeoTDR services


Time Domain Reflectometry (TDR) or “cable radar” was adapted by GCI's Kevin O'Connor to monitor movement of foundations, roadways and slopes as well as changes in groundwater conditions and soil moisture.


drone imaging

Advanced Drone Imaging Enhances Risk Management – July 2023

The technological advances of GCI’s newest drone captures advanced resolution and detail that helps make human work safer and improves the data that informs the work of engineers and technicians. Combined with the ability to image or reach areas not previously accessible, the result is a sizeable leap forward in terms of the info available for risk management and decision making.

gci cement shortage

Cement Shortage Alters Site Stabilization Approach – April 2023

Due to the huge increase in central Ohio construction and limited cement availability nationwide, the cement products used for site stabilization are projected to be in short supply throughout 2023. Developers that typically rely on cement stabilization to obtain stable subgrades and retain stability throughout construction during wet seasons, will need to consider other options.

seeing underground

How to “See” What’s Underground – January 2023

Ground penetrating radar (GPR) and electromagnetic induction profiling (EM) are complementary technologies that can detect and map underground objects and conditions without excavation. Here’s a quick review of these non-invasive tools that GCI uses to conduct geophysical surveys for environmental and construction materials assessments.

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