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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.


pfas regulations

New Federal PFAS Regulations to Impact Real Estate Property Owners, Transactions and Development – July 2024

Two new U.S. EPA rules that significantly impact real estate became effective July 8, 2024. The EPA designated two widely used PFAS substances, PFOA and PFOS, as hazardous substances under CERCLA, also known as Superfund. PFAS investigation is now required for Phase I ESAs.

BEC practices

Use of Building Envelope Consulting Practices Can Minimize Rework and Increase Profitability – April 2024

Rework costs Ohio building owners and contractors millions each year, but there are steps architects, owners, and contractors can take to minimize avoidable and costly tear-outs and do-overs.

gci cement shortage

Cold Weather Advisory for Concrete & Masonry Construction – January 2024

Special measures are required to successfully place concrete and construct masonry walls and foundations during extremely cold weather. Review the protection procedures needed for soils, fresh concrete, masonry materials, mortar, and grout for various cold weather conditions.

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