About Carlson Testing Inc.


Carlson Testing, Inc. performs at a “world-class” level for our clientele. A major reason for this is our commitment to obtaining and operating under some of the strictest certifications and accreditations, in our industry.

Why is this important to you? This is important because it is common practice to question the competency of the inspection and testing agency and/or their inspectors and technicians when materials fail to meet the quality requirements of a project.

We, and our clients, must be confident that our results are an indication of a “true” material failure and not a result of poor quality control practices. One of the most important aspects of our job is to instill confidence in our clients. Our services and final results have to be detailed and accurate, as well as, reliable and repeatable.

To help achieve this level of confidence, we have sought out and obtained numerous national and local accreditation and certifications. These include:

International Accreditation Service® (IAS): All Offices

  • ISO/IEC Guide 17025-2005
  • ANSI/ASTM E329 (materials)
  • ASTM C1077 (concrete)
  • ASTM D3666 (bituminous)
  • ASTM D3740 (soils & rock)
  • ASTM E543 (non-destructive)

Tigard Office: IAS Certificate of Accreditation TL-891
Bend Office: IAS Certificate of Accreditation TL-893
Salem Office: IAS Certificate of Accreditation TL-892
Eugene Office: IAS Certificate of Accreditation TL-894

US Army Corps of Engineers: Tigard Office

Aggregates: ASTM C40, C117, C127, C128, C136, C29, C88, C131, C142, C535, C566, C702, C1260, D75, D2419, D5821, and CRD-C119

Bituminous: ASTM D2041, D2726, D3203, D3665, D3666, D5444, D6307, and E329

Concrete: ASTM C31, C39, C138, C143, C172, C231, C1064, C42, C78, C470, C511, C617, C642, C1077, and C1231

Masonry, Mortar, & Grout: ASTM C1019, C1314

Rock: ASTM CRD-C148

Soils: ASTM D421, D422, D588, D698, D1140, D1556, D1557, D1633, D2168, D2216, D2487, D3740, D4318, and D6938

ASTM E283, E330, E331, E547, E783, E987, E1105, E2068, F588, and F842

Washington Association of Building Officials (WABO): Tigard Office

  • Reinforced Concrete
  • Pre-stressed Concrete
  • Shotcrete
  • Structural Masonry
  • Structural Steel & Bolting
  • Structural Welding
  • Spray-Applied Fire-Resistive Materials
  • Lateral Wood
  • Cold Formed Steel Framing
  • Proprietary Anchors
  • Welder Qualifying Agency

Oregon Department of Transportation (ODOT): Bend, Eugene, Salem, Tigard

In addition to the above accreditations and certifications, we also maintain affiliations with:

  • International Code Council (ICC)
  • American Welding Society (AWS)
  • American Society for Non-Destructive Testing (ASNT)