Janney Technical Center


"Our extensive in-house laboratory facilities, vast experience, and capabilities set WJE apart from other firms. We're able to bring innovative testing and analysis solutions to each WJE project."

— John Pearson, Associate Principal and Laboratory Manager

WJE’s Janney Technical Center (JTC) is named after WJE founder Jack Janney. Composed of both engineers and scientists, the JTC provides advanced testing and forensic capabilities to solve the most technically challenging problems in connection with structures, construction materials, and manufactured components. After half a century and more than 125,000 assignments, JTC engineers and materials scientists have successfully completed investigative, testing, and repair projects involving virtually every type of construction material, structural system, and architectural component.

The JTC’s 70,000-square-foot state-of-the-art testing and applied research facility includes a full array of chemistry, petrography, metallurgy, concrete and mortar, corrosion, and structural testing laboratories as well as environmental exposure chambers.

JTC personnel are recognized leaders in their fields and are active participants in standards development and industry organizations. The multi-disciplinary nature of our team of experienced scientists and engineers enables WJE to offer extensive testing and investigation capabilities to characterize materials, determine root causes of problems, and evaluate performance. The JTC performs tests to determine specification compliance, simulate performance under field conditions, understand failure mechanisms, generate fundamental engineering properties, and assess service life to meet the needs of various types of clients. Our services extend beyond our laboratories, and it is common for JTC personnel to take our expertise to the field and conduct specialized testing on site.

From the laboratory to the job site, from engineering to chemistry to physical sciences, JTC professionals develop and test new approaches and create innovative solutions for the built world.


Quality Programs and Accreditations

Specific accreditations and quality programs for our Northbrook laboratory include:

  • ASME NQA-1 Compliant Nuclear Quality Assurance Program
  • American Association of State Highway and Transportation Officials (AASHTO) Standard Practice R18 Standard Recommended Practice for Establishing and Implementing a Quality System for Construction Materials Testing Laboratories by AASHTO – Certificate and Scope
  • AASHTO Materials Reference Laboratory (AMRL)
  • Cement and Concrete Reference Laboratory (CCRL)
  • City of Los Angeles approved testing agency – List of Approved Agencies
  • ISO/IEC 17020:2012 Conformity Assessment – Requirements for the Operation of Various Types of Bodies Performing Inspection by the ANSI-ASQ National Accreditation Board (ANAB) – Certificate and Scope
  • ISO/IEC 17025:2005 General Requirements for the Competence of Testing and Calibration Laboratories by the ANSI-ASQ National Accreditation Board (ANAB) – Certificate and Scope 
  • Miami-Dade County Accredited Test Laboratory (TAS114 Appendix E, TAS124, ASTM A370, ASTM C39, ASTM C1314, ASTM E8, ASTM E72, ASTM E488, ASTM E1105, ASTM E1190, ASTM E1512 - Except Radiation Test) – List of Accredited Laboratories


Staff Accreditations
  • American Concrete Institute (ACI)
    • Adhesive Anchor Installer
    • Aggregate Testing Technician - Level I
    • Concrete Field Testing Technician - Grade I
    • Concrete Flatwork Technician
    • Concrete Laboratory Testing Technician - Level I and Level II
    • Concrete Strength Testing Technician
  • American Society for Nondestructive Testing (ASNT)
    • Level I Thermographer
    • NDT Inspector - Level II and Level III
    • NDT Magnetic Particle Testing - Level II
    • NDT Ultrasonic Technician - Level I and Level II
  • American Welding Society (AWS)
    • Certified Welder and Welding Operator
    • Certified Welding Engineer
    • Certified Welding Inspector
  • International Concrete Repair Institute (ICRI)
    • Concrete Slab Moisture Testing Technician
  • Infrared Thermographer - Level I and Level II
  • National Association of Corrosion Engineers (NACE International)
    • Cathodic Protection Technician
    • Coating Inspector - Level I and Level II
    • Corrosion Technician
  • PTI Bonded Post-Tensioning Field Specialist - Level I
  • Remote Pilot - Small Unmanned Aerial Systems (Drones)

Laboratory Locations