PIT Test

LOW STRAIN PILE INTEGRITY TESTING (PIT TESTING)

The Pile Integrity Tester (PIT) is used on bored piles, driven concrete shafts, concrete filled piles or drilled shafts. It detects potentially dangerous defects such as major cracks, necking, soil inclusions or voids.

PIT Testing is performed with a hand-held hammer, a sensitive accelerometer and the PIT Tester. A compressive wave is generated by tapping the pile head with the hammer. When the downward compression wave encounters a change in cross section or in concrete quality, it generates an upward tension wave that is obtained at the pile top.

The velocity recorded along with the subsequent reflections from the pile top or pile discontinuities are graphically displayed. The effectiveness of the system is limited to pile lengths not exceeding 30 to 60 pile diameters.

PIT Testing does not require advance planning or access tubes. This makes it the most affordable option when the pile integrity is in question.

 

BENEFITS:

  • No advance planning
  • Quick and Economical
  • Can verify every pile on site
  • Conforms to ASTM D5882
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