Concrete Pipe Testing

PCCP, RCP and PCP concrete water and waste water pipes installed in the 1950’s, 60’s and 70’s are at or beyond their design lives. Testing concrete pipes is a critical element of utility efforts to develop cost management strategies and identify, repair or replace weak elements before they fail.  NDT uses sonic/ultrasonic techniques to conduct internal and external testing of concrete pipes to evaluate the structural integrity and identify pipe thinning due to internal hydrogen sulfide corrosion or external carbonization. Our experience includes hundreds of miles of large diameter (48 to 120 inch) concrete water mains and hundreds of sections of concrete waste water pipes. We use internal sonic/ultrasonic impact echo and pulse velocity measurements to determine the integrity, strength, and condition of the core concrete and if broken pre-stressing wires have slipped and core concrete is delaminated for the cylinder. For waste water pipes sonic/ultrasonic measurements are made on the exterior of an excavated pipe to determine if concrete core has thinned and weakened due to hydrogen sulfide corrosion.



  • Washington Suburban Sanitary Commission- PCCP condition and integrity testing
  • Tarrant Regional Water District  Texas-PCCP condition and integrity Testing
  • Del Ray Beach Florida- Detection of Hydrogen Sulfide Corrosion
  • Texas Power Plant- PCCP condition and integrity testing
  • Water and outfall sewers, Washington DC-Concrete integrity and reinforcing
  • Fort Walton Beach Florida-- Detection of Hydrogen Sulfide Corrosion