PIT is a non-destructive testing method used to evaluate the integrity and structural limits of deep foundations like piles and drilled shafts. It uses sonic pulses to detect potential defects, like cracks, necking, soil or void inclusions that are difficult to identify visually once foundations are installed underground. PIT helps ensure foundations will perform as intended by identifying integrity issues that could compromise strength. It can be used on different foundation types with minimal preparation and allows efficient testing of multiple piles on site.

1. P R E S E N T E D B Y S A B N A T H I L A K A N
PILE INTEGRITY TEST

2. What is P.I.T.?
 It’s a non destructive testing of deep foundations like
driven piles ,augered or bored piles.
 It is a low strain method for integrity testing of
driven piles , drilled shafts etc.
 P.I.T is also called Sonic testing ,Pulse echo or
Transit Response
 In some situation it can also be used to determine
unknown lengths of existing foundations

3. Why the need for P.I.T?
 The ultimate strength of a deep foundation must
satisfy both structural and geotechnical limits for
the foundation to perform as desired.
 Methods of installation of drilled shafts and driven
piles gives rise to concern among engineers
regarding the structural integrity of the shafts ,as the
final foundation product lies buried beneath the
ground which makes inspection difficult.

4. Pile Integrity Testing
 Helps in detecting potentially dangerous defects
such as :
• Cracks
• necking
• soil inclusions and
• Voids
 With only minimal pile preparation PIT maybe
used for auger cast piles,drilled shafts,driven
concrete piles concrete filled pipes and timber piles.
 Can economically test many or all piles on site.

10. Profile of a defective pile