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Pile Integrity Testing

Pile Integrity Testing (PIT) is a low-strain and non-destructive integrity test method which only involves the impact from a small hand-held hammer. This low-strain test can be applied to any concrete piles (eg. Pre-stressed concrete piles, drilled shafts, auger cast piles, concrete filled pipe piles).

Pile Integrity Testing In Depth

ACS Testing offer an on-site Pile Integrity Testing service using a Piletest Pile Echo Tester (PET) which uses the Pulse-Echo method (PEM) for quick pile integrity testing (quality control) of piles. The purpose of integrity testing is to discover such flaws before they can cause any damage. The PET is fully compliant to ASTM D5882 - 07(2013) Standard Test Method for Low Strain Impact Integrity Testing of Deep Foundations for pile integrity testing as well as additional standards.


Pile Intergrity Testing Information

The test is conducted by placing a transducer on the pile head surface and the pile is tapped with a lightweight plastic hammer. The resulting signal, or reflectogram, is captured and transferred to a computer by PET’s digital accelerometer, providing real-time information about the length and shape of the pile.  



Testing Conditions

In order to obtain the highest quality of recovered reflectogram, the piles under test should satisfy the following conditions:




What Can Be Detected?

Since the sonic method is based on the use of stress waves, it can identify only those pile attributes that influence wave propagation. The following items may in many cases be detected:  


  • Pile Length
  • Cracking Perpendicular to the Axis
  • Joints and Staged Concreting
  • Changes in Cross Section