Construction Materials Testing & Inspections

Accuracy and knowledge are the keys to any successful project. UES offers a broad range of materials and lab testing for a variety of projects, from complex roadway construction to single-family residential communities. Our precise testing and quality control offerings successfully guide our clients through stringent project specifications, difficult construction schedules, and complex government regulations with ease.

Guided by our vision of the “Lab of the Future,” we are committed to systematic improvements to the industry’s original standards of practice. Our state-of-the-art laboratories feature innovative test equipment operated by our team, credentialed and qualified with the Construction Materials Engineering Council (CMEC), US Army Corps of Engineers (USACE), AASHTO Materials Reference Laboratory Accreditation (AMRL), Cement/Concrete Reference Laboratory Accreditation (CCRL), and multiple State Departments of Transportation. In accordance with our accreditations, we follow strict quality assurance guidelines for equipment usage and calibration utilizing a controlled Quality Assurance Program. Additionally, we bring our services to remote sites via our fleet of self-sufficient mobile soils and concrete laboratories.

We understand that the most sophisticated technology is wasted without an excellent team trained to maximize its use. That’s why every member of our testing team offers expertise in sampling techniques, testing procedures, verification procedures, and the application of various building materials. Together with our ground-breaking technology, our testing services remain unmatched.

UES offers full-service testing capabilities from each of our offices and performs testing services in the following fields of construction materials.

Asphalt and Bituminous Materials

Our asphaltic concrete inspection services ensure your asphalt pavement system is constructed per project specifications. UES can provide field quality control to determine and monitor temperature, lift thickness, and compaction using core samples, as well as verification of aggregate gradation, asphalt content, bulk specific gravity, stability, and flow. Services Include:

  • Asphalt and Coring and Evaluation
  • Asphalt and Batch Plant Inspection
  • Thickness and Density Determination
  • NCAT Extraction and Gradation Analysis

Concrete and Cement

Our inspection services also include sampling concrete for air content, slump, temperature, and unit weight; making cylinder samples for compressive strength testing; and observing concrete placement. Services include:

  • Compressive and Flexural Strength Testing
  • Maturity and Relative Humidity of Concrete
  • Reinforced Concrete
  • Pre-Stressed and Post-Tension Concrete
  • Floor Flatness Inspection
  • Flooring Coefficient of Friction Testing
  • Coring and Evaluation
  • Pavement Marking
  • Epoxy Anchor Inspection
  • Batch Plant Inspection
  • Proof Load Testing and Torque Testing
  • Concrete Reinforced Steel
  • In-Place Concrete Strength

Earthwork Soils and Aggregate

By conducting on-site tests and monitoring, UES can analyze the suitability of soils for structural fill, determine the need for moisture adjustment, and provide an overview of earthwork activities. Services Include:

  • Aggregate Mine and Terminal Evaluation
  • Rock
  • Moisture / Density Testing Determination (Proctor Tests)
  • Index Properties Determinization
  • Hydraulic Conductivity (Permeability)
  • Triaxial Sheer Testing
  • In-Place Density Determination
  • Corrosion Testing

Fire Safety

  • Spray-Applied Fireproofing Inspection


  • Wall Observation and Testing
  • Structural Masonry
  • Masonry units compressive strength
  • Grout and Mortar Testing

Structural Steel Inspections & Non-Destructive Testing (NDT)

Structural Steel Inspection services routinely include visual welding inspection performed by a Certified Welding Inspector (CWI) in accordance with the American Welding Society (AWS) D1.1 Structural Welding Code or other applicable AWS standard.

In addition to a visual welding inspection, other non-destructive testing (NDT) such as bolt torque testing, Magnetic Particle Testing (MT), Ultrasonic Testing (UT) and Radiographic Testing (RT) are used to “look inside” materials to detect discontinuities and defects that may not be seen by visual inspection alone.


The examinations are performed without damaging the materials, so that the tested materials are not wasted and may be put into service. NDT helps determine if the materials are acceptable for use as-is, contain defects that can be repaired, or must be rejected. Inspections take place in steel mills and fabrication shops throughout the United States and on-site in the field and include all varieties of structures including bridges, stadiums, buildings, towers, poles, and sign structures.

UES can assist you with the following types of structural steel inspections & non-destructive testing:

  • Structural Welding Inspections
  • Weld Fit Up Inspections
  • Welder Certification
  • Bridge Weld Inspections
  • Decking & Joist Inspections
  • High Strength Bolting Inspections
  • Pre-tension Verification Inspections
  • Piping and Pressure Piping (ASME B31.3 and B31.9)
  • Dye Penetrant Testing
  • High Strength Bolting Inspections and Torque Testing
  • Ultrasonic Testing (UT)
  • Vapor Emissions Testing
  • Magnetic Particle Testing (MT)
  • Phased Array Ultrasonic Dye Penetrant Magnetic Particle

Wood Moisture and Framing Inspection