The Pile Integrity Tester gives peace of mind that a pile or shaft is free of major cracks and voids, prior to construction of the superstructure. It may be used on most concrete or wood foundations. The PIT may also be used to test piles integral in the structure, such as those supporting existing bridges or towers, and may assess their length.
The PIT performs wave equation-based non-destructive foundation investigations known as Low Strain Impact Integrity Tests or Low Strain Dynamic Tests. These test may be performed by the Pulse (or Sonic) Echo or Transient Response Methods. With the PIT, any form of the test is performed fast, potentially making it possible to test every pile on a job site.
The PIT test consists of attaching one or two accelerometers to the foundation, and using a hand held hammer to impact it. The PIT collects the acceleration data and displays curves that reveal any significant changes in cross section that may exist along the shaft. The PIT-W software post processes the data and generates reports, while the PIT-S software simulates a PIT test and performs simplified signal matching to assess the shape of the foundation.
The Pile Integrity Tester is available in several configurations to match the needs of each user.
PIT-V and PIT-FV (pictured on the upper right of the page) have a large screen and read data from traditional (cabled) accelerometers and/or instrumented hammers.
PIT-X and PIT-XFV (pictured on the upper left) are smaller and lighter, and are available in traditional or wireless versions.
PIT-X and PIT-V offer a single channel for data acquisition and read velocity data from a single accelerometer. They analyze data in the Time Domain by the Pulse Echo method, which is sufficient for most integrity tests.
PIT-XFV and PIT-FV come with 2 channels of data acquisition and may read data from one accelerometer and one instrumented hammer or from two traditional accelerometers. The instrumented hammer furnishes data for a more thorough evaluation of the integrity of the foundation (force and velocity analysis in the Frequency Domain) and allows the investigation of defects near the pile top (Transient Response Method). The use of a second accelerometer may be useful when testing piles under existing structures, for determining unknown foundation length, and for large diameter piles.
Find out which model is right for you here.
"We saw the specs but nobody among us could imagine that the PIT-X is so tiny and light. Congratulations."
Dr. Ing. Oswald Klingmüller, GSP, Germany
All models of the Pile Integrity Tester are battery powered, operated through a high visibility touch screen, and include a Fast Fourier Transform (FFT) feature and a license of PIT-W Standard Software. All comply with ASTM D5882 and many other codes and specifications.