We are able to provide professional services to our clients across the United States and Mexico. The key members of the firm have provided a wide range of services from feasibility studies through design and construction. Dr. Peter Fleming, P.E., the President of GTI, and his staff have completed several thousand geotechnical and environmental studies in Arizona, as well as New Mexico, California, Nevada, Utah, Texas, Colorado, Washington, and Mexico.
GTI can provide the construction materials testing and special inspection services on any type of construction project. Some of the markets GTI has provided materials testing services for include, but are not limited to:
RESIDENTIAL
COMMERCIAL
INDUSTRIAL
Field Testing
GTI can provide a wide variety of field materials testing to suit all of our clients needs with our experienced staff of professional engineers, geologists, scientists and field technicians. Field technicians with GTI have Arizona Technical Testing Institute, American Concrete Institute, AASHTO, City of Phoenix and ADOT certifications to conduct soils, concrete and asphalt testing. Testings services include, but are not limited to:
- Field density testing using nuclear density guages, sand cones and drive tubes.
- Concrete testing by casting cylinders or in-field testing on existing concrete utilizing non-destructive methods.
- Soil bearing capacity testing utilizing the Clegg Impact Tester, penetrometers, van shear and dilatometers.
- Asphaltic concrete testing including establishing rolling patterns, relative density and sample coring.
- Soil Resistivity Testing
- Material Suitability Studies
- Lime-Soil Stabilization
- Chemical Stabilization
- Nuclear Density Hole Logging
- Utility Location Identifications
- Clegg Impact Testing
GTI is prepared to meet all of your field testing needs throughout the United States, as well as for international projects. We commonly work with residential developers to provide materials testing services for developments from custom designed homes to master planned communities. GTI works to provide testing and/or inspection of various foundations, basements, retaining walls, post-tensioned slabs, etc.
GTI also provides materials testing services for several different types of commercial developments. We have worked on several high-rise hotels, strip malls, banks and numerous restaurants.
GTI has also earned the respect of numerous telecommunication providers for our work in designing and providing materials testing services for the construction of monopoles, self-supporting lattice towers and guyed towers throughout the United States. We can provide special inspection services on most of the telecommunication projects.
GTI works to meet your needs in a timely and cost-effective manner.
Laboratory Services
GTI’s experienced staff of professional engineers, geologists, scientists and field technicians can perform a wide variety of laboratory tests to meet your specific project needs. GTI quickly and efficiently performs laboratory tests in general accordance with ASTM and AASHTO standards at competitive prices. GTI has been certified by AMRL, CCRL, the City of Phoenix, AASHTO and ADOT for conducting various laboratory tests for soils, concrete and asphalt. Standard laboratory tests performed by GTI include, but are not limited to:
Soils
- Shrink/Swell Testing
- Atterberg Limits
- Grain Size Distribution
- Moisture Density Testing Standard Proctor
- Moisture Density Testing Modified Proctor
- Permeability Tests
- Consolidation Testing
- Direct Shear Testing
- Unconfined Compressive Tests
- Soil Resistivity and Conductivity
- pH Testing
- Material Suitability Testing
- California Bearing Ratio Testing
Concrete
Compression Testing on
- Concrete
- Grout
- Mortar
- Rock Core
- Asphalt
- Specific Gravity Testing
- Marshall Tests
- Rice Tests
- Asphalt Content by Ignition Testing
- Asphaltic Concrete Coring
Our registered and certified laboratory professionals are experienced in data interpretation and analysis and have many years of experience performing a wide variety of laboratory tests.
GTI is prepared to provide all of your laboratory needs throughout the United States in our full service laboratories in Scottsdale and Tucson, Arizona or at a fully equipped mobile laboratory for larger projects.
Special Inspection Services
GTI can provide a wide variety of in-field special inspection services to suit all of our clients needs with our experienced staff of professional engineers, geologists, scientists and field technicians. Our special inspection services include, but are not limited to:
- Steel Inspection Services
- Foundation Special Inspections
- Footing Inspections
- Lake Liner Testing and Inspections
- Re-bar Inspections
- Welding Inspections
- High Strength Bolt Inspection
- Grading Inspections
- Slope Inspections
- Rock Anchors
- Post-Tensioned Slabs
- Retaining Walls
- Gabions
- Deep Foundation Inspection and Analysis
Our Certifications
