Paul S. Fisk, President NDT Corporation
Anchor Bolts and Rods on
a Typical Sign or Light Tower
Many of the signs and communication towers along our highways have been in service for many years and are of an age where it is important to test their anchor bolts and rods for flaws that could affect the ability of these structures to withstand severe weather conditions. NDT uses ultrasonic testing to determine anchor rod lengths; whether anchor rods are straight or hooked; and to detect flaws in the anchor rods and bolts.
Sign, signal, and lighting structures utilize large anchor rods to provide attachment of the structure to their foundations. These structures are subject to large forces from wind and gravity - particularly cantilever structures - that are transmitted directly to their foundation carried through the anchor rod group. The inspection of roadway signs, light poles and traffic signals requires an assessment of the length, configuration and condition of anchor rods and bolts.
Ultrasonic Testing Reveals Anchor Bolt
and Rod Condition and Dimensions
Our testing data are used to evaluate the integrity and condition anchor rods and bolts for structures including:
We also test for:
NDT Testing of Tower and Sign Pads & Footing
Massachusetts Office Florida Office 153 Clinton Road 8413 Laurel Fair Circle, Ste 200-B
Sterling, MA 01564 Tampa, FL 33610