About Carlson Testing Inc.


CTI provides the level of professional quality, client confidence, test accuracy, and timely response that has "set the bar" in our industry.

Our laboratory testing services are performed in accordance with our Quality Assurance (QA) Manual and completed under the direct supervision of our Corporate Technician Director and Registered Professional Engineer. CTI also employs our own in-house Quality Assurance (QA) Manager, which provides us the unique ability to be ahead of the curve in regards to updates or test standards, technical references, and advanced technologies. By having a QA Manager in-house, CTI is able to offer continuing education and training to our laboratory technicians and trainees. This supplemental training is in addition to other local, state, and federal laboratory technician training classes and includes both written and performance examinations.

Laboratories at each branch office are overseen by experienced and qualified Laboratory Managers and Supervisory Laboratory Technicians. CTI employs a large staff of knowledgeable and qualified laboratory technicians whom are capable of implementing the proper testing methods in accordance with the required test standard.

Carlson Testing provides a wide variety of laboratory testing services. In general, our laboratories provide services for:

Soils & Aggregates

  • Moisture/Density (Proctors) Determinations
  • Gradation Evaluation (Sieve Analysis)
  • California Bearing Ratio (CBR)
  • Direct Shear Analysis
  • Consolidation Analysis
  • Hydrometer Analysis
  • Soil Resistivity


  • Compressive Strength
  • Flexural Strength
  • Specific Gravity
  • Tensile Strength
  • Coring
  • Thermal Resistivitiy

Asphalt (Bituminous)

  • Mix Designs
  • Extraction/Gradation Testing
  • Marshall Flow-Stability
  • Maximum Specific Gravity (Rice)
  • Tensile Strength Ratio
  • Compressive Strength
  • Coring

Structural Steel

  • Non-Destructive Testing (UT, MT, PT, VT)
  • Welder Certifications
  • Welding Procedure Writing
  • Skidmore Wilhelm
  • Tensile Strength
  • Hydraulic System Calibration