engineering inspiring spaces

we provide Geotechnical, Environmental & Materials Engineering for residential & commercial projects

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Geotechnical, Environmental & Materials Engineering

Geotechnical Testing & Inspections (GTI) is an environmental, geotechnical and materials engineering consulting firm composed of engineers, geologists, scientists and technicians. Services are provided regionally, nationally and internationally with headquarters in Scottsdale, Arizona.

Geotechnical

GTI is prepared to meet your geotechnical engineering needs by performing high quality work in a timely and cost effective manner, specific to your projects needs to assist in your understanding of the physical and mechanical properties of soil and rock, and their interaction with the forces of engineered structures above ground.

Geotechnical Services

GTI is prepared to meet your geotechnical engineering needs by performing high quality work in a timely and cost effective manner, specific to your projects needs to assist in your understanding of the physical and mechanical properties of soil and rock, and their interaction with the forces of engineered structures above ground.

Environmental

GTI offers a comprehensive range of environmental engineering services to our clients. GTI’s registered and certified professionals have extensive knowledge regarding all aspects of Phase I Site Assessments (ESA’s) as well as experience in Phase II Site Characterization studies, and Phase III Site Remediation activities.

Environmental Services

GTI offers a comprehensive range of environmental engineering services to our clients. GTI’s registered and certified professionals have extensive knowledge regarding all aspects of Phase I Site Assessments (ESA’s) as well as experience in Phase II Site Characterization studies, and Phase III Site Remediation activities.

Materials Testing

GTI can provide the construction materials testing and special inspection services for QA/QC field testing and inspection of common materials including soil/aggregate, concrete/masonry, asphalt concrete and special inspection of welding, structural steel and fireproofing.

Materials Testing Services

GTI can provide the construction materials testing and special inspection services for QA/QC field testing and inspection of common materials including soil/aggregate, concrete/masonry, asphalt concrete and special inspection of welding, structural steel and fireproofing.

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SATISFIED RETURNING CLIENTS

Over 40 Years of Experience

We are registered professional engineers in more than 26 states and are available to service all your engineering needs. The key members of the firm have worked in the western United States for over 40 years and have gained national and international recognition for their ability to find innovative and cost saving solutions to difficult geotechnical, environmental and construction materials and testing projects.

In the past 20 years, GTI has become a recognized expert in various aspects of the development and engineering industry. GTI is able to provide professional engineering services to our clients across the United States and Internationally. The key members of the firm have provided a wide range of services from feasibility studies through design and construction.

Principles

GTI is committed to the principles of client service, responsiveness and sound practical professional advice. Throughout our history, we pride ourselves on providing high quality engineering services and on developing the most cost effective and innovative solutions that address the needs of our clients.

Certifications

GTI has been certified by AMRL, CCRL, the City of Phoenix, AASHTO and ADOT. Field Technicians with GTI are certified with the Arizona Technical Testings Institute (ATTI), American Concrete Institute (ACI), City of Phoenix and ADOT to conduct soils, concrete and asphalt testing. We also have certified personnel on the Slab-on-Ground Committee of the Post-Tensioning Institute (PTI). GTI is also a nationally recognized Women Owned Business and an ADOT Disadvantaged Small Business.

A partial list of services include:

  • Geotechnical Subsurface Explorations
  • Phase I Environmental Site Assessments
  • Phase II Site Characterizations Studies
  • Phase III Site Remediation Services
  • Seismic Refraction Surveys
  • Foundation Integrity Evaluations
  • Archeological & Biological Studies
  • Special Foundation Analysis & Design
  • Foundation Design Service
  • Post Tensioned Slab Recommendations
  • Special Inspection Services
  • Materials Engineering & Testing Services
  • Foundations Integrity Evaluations
  • Forensic Investigations
  • Retaining Wall & Foundation Recommendations
  • NEPA Checklist and Full NEPA & SHPO Services
  • Pile Integrity Testing
  • Cross-Hole Sonic Logging
  • Percolation Testing
  • Clegg Impact Testing
  • Vibration Studies
  • Slope Stability Evaluataions

Testimonials

“We have worked with GTI for over 15 years. We truly appreciate their responsiveness, thorough investigation and understanding of our needs. We have referred GTI to other clients and friends and will continue to do so.

Jeffrey Geyser • Lawrence and Geyser Development

“GTI has obtained the ADOT Disadvantaged Business Status and can provide all the ADOT testing services under the SBA status.”

Arizona Department of Transportation

“GTI has provided a superior service to us and we have the highest respect for them as our engineering contractor.”

Rob Curtis

“GTI has one of the highest rating with AMRL Testing in Arizona. Their laboratory and staff exceeds the expectations set forth by AMRL.”

AMRL Staff • AMRL

Our Certifications

engineering inspiring spaces

We Provide Geotechnical, Environmental & Materials Engineering For Residential & Commercial Projects