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LOW STRAIN PILE INTEGRITY TESTING (PIT)
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Low Strain Pile Integrity Testing is a quick and cost effective method to evaluate the shaft integrity of concrete piles. The testing is able to provide information on:
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a.) pile continuity
b.) consistency of material
c.) location of defect
d.) degree of defect |
The test method is performed with a hand held hammer, a sensitive accelerometer and the Pile Integrity Tester.
The accelerometer is attached to the top of the pile, and then a compressive wave is generated by tapping the pile head with a hammer. When the downward compression wave encounters a change in cross section or in concrete quality, it generates an upward tension wave that is later observed at the pile top.
The velocity recorded along with the subsequent reflections from the pile toe or pile discontinuities are graphically displayed.
The effectiveness of the system is limited to a pile length not exceeding 30 to 60 pile diameters depending on soil condition and concrete quality. |
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PIT Sample Graph |
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Philippines 
Malaysia 
