Services we offer.

Special Inspections

CTI offers a comprehensive list of special inspection services. Contact one of Project Managers and let them guide you through the required Building Code requirements for your project.

Carlson Testing has the resources to staff your project with highly experienced, knowledgeable and professional engineers, managers, supervisors, and inspection personnel. Our team of highly skilled professionals have been selected for their diversity of knowledge and for their ability to work with clients to achieve their goals in the most timely and cost-effective manner possible, while adhering and ensure compliance with project contract documents.

Our special inspection team consists of over hundred inspectors in Oregon and Southwest Washington. Many of whom hold multiple inspection certifications covering the full gamut of construction related activities as required by various state DOT’s, as well as, public jurisdictional and private agencies. CTI resides on the cutting edge of the newest technologies and is committed to, and supports, continuing education and training of our staff. We stay ahead of our industry by using the most advanced methods and techniques and completing services with the most knowledgeable personnel.

We believe that successful construction projects are dependent on a team approach. At Carlson Testing, we promote a partnering atmosphere with stakeholders to facilitate an attitude and team environment that is committed to delivering a quality project on time and within budget. CTI’s resume stands second to none and features a multitude of projects ranging from highly complex high-rise structures, ports and waterways, bridge, transit, freight, highway, airports, manufacturing facilities, hospitals, schools and universities, and general commercial and residential projects. Our special inspections services include:


Geotechnical Inspections for:

  • Deep Foundation Elements
  • Helical Piles
  • Excavations-Sheeting, Shoring & Bracing
  • Proofrolling
  • Over-Excavation of Soft Soils
  • Underpinning
  • Slope Stablization
  • Engineered Fill - Stripping, Benching, Keying
  • Drainage
  • Footings and Foundations
  • Subgrade Inspections
  • In-place Density Testing

Structural Steel Inspection for:

  • Field Welding and Erection
  • High Strength Bolting
  • Embeds
  • Shop Welding & Fabrication Inspection
  • Welding Procedure and Welding Qualifications
  • Cold Form Steel Framing

Structural Concrete Inspection for:

  • Concrete Placement
  • Rebar (reinforcing steel) Placement
  • Pre-stressed Concrete
  • Post-Tensioned Concrete
  • Tendon Stressing
  • Lightweight Concrete
  • Epoxy/Polymer Concrete
  • Precast Plant Inspection
  • Batch Plant Inspection
  • Auger Cast Pile Grounting

Concrete Sampling for:

  • Temperature
  • Slump
  • Unit Weight/Yield
  • Air Content - Pressure or Volumetric
  • Fabrication of Compressive Strength Cylindrical Specimens

Structural Masonry Inspection for:

  • Rebar (reinforcing steel) Placement
  • High-Lift Grout Placements
  • CMU Block Sampling
  • Masonry Prism Sampling & Specimen Fabrication
  • Brick Sampling
  • Mortar Sampling & Specimen Fabrication
  • Grout Sampling & Specimen Fabrication

Proprietary Anchor Inspection for:

  • Cast In-place Anchors - Hex Head Bolt, L-Bolt, J-Bolt, Headed Stud
  • Adhesive or Epoxy Anchors - Threaded Rod, Hex Head Bolt, Rebar
  • Mechanical Anchors - Expansion & Screw
  • Seismic Resisting Systems
  • Suspended Ceilings
  • Mechanical Piping Systems
  • Essential Facilities

Fire Resistant Systems for:

  • Spray Applied Cementious Fireproofing Surface & Coating
  • Fireproofing Density, Thickness and Adhesion
  • Intumescent Fire-resistant Coatings

Nondestructive Testing & Examination for:

  • Dye Penetrant (PT)
  • Magnetic Particle (MT)
  • Ultrasonic (UT)
  • Visual (VT)
  • Ground Penetrating Radar (GPR)
  • Floor Flatness and Levelness
  • Windsor Probe
  • Schimdt (Rebound) Hammer
  • Rebar Locate