Steel I-Beam Dimensions

NDT uses ultrasonic measurements to determine the length and thickness of a steel I-beam’s web and flanges. These measurements are critical factors in determining the structural capacity of a beam in a building or bridge structure. Often steel I-beams are embedded in concrete on a bridge or behind finished ceilings, walls or floors in a building. NDT technicians use GPR to identify critical locations and drill small holes in the structure to enable access for ultrasonic transducers to measure I-beam dimensions.

Our testing data are used to determine critical dimensions of steel I-beams in structures including:

  • Support beams for commercial construction
  • Support columns for elevated trollies and people movers
  • Mezzanines and platforms
  • Bridges

We also test for:

  • Condition of concrete walls, floor and roll slabs
  • As-built thickness and reinforcing of concrete and masonry walls and abutments
  • Foundation conditions-pile lengths, location of piles and piles caps


  • Roof I Beam Dimensions
    HOPE School
    Hoboken, NJ
  • Steel Band Reinforcing Thickness
    West Greenwich, RI Arch Bridge
  • Steel Liner Thickness
    Track 1
    Baltimore MTA

contact us

Corporate Office
153 Clinton Road
Sterling, MA 01564

Tampa Office
8413 Laurel Fair Circle
Ste 200-B
Tampa, FL 33610

United Kingdom Office
27a Upper High Street
Cradley Heath, UK B645HX