PIT performs Low Strain integrity testing, also called Sonic Echo or Pulse Echo Testing. The PIT may be used for auger cast-in-place (CFA) piles, drilled shafts, driven concrete piles, concrete filled pipes and timber piles. It detects potentially dangerous defects such as major cracks, necking, soil inclusions or voids and, in some situations, can determine unknown lengths of piles that support existing bridges or towers.

PIT data is evaluated in the field or transfered to a personal computer for further analysis by the PIT-W software.Also can determine unknown defects of piles, which are integral part of existing structures.