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Limitations of pile integrity testing
This section briefly describes the limitations of pile integrity
testing. These limitations must be understood for any integ-rity
evaluation of piles:
• Pile integrity tests cannot be used for evaluation of load
bearing capacity
• Pile integrity testing cannot be conducted over pile caps
• Pile integrity testing cannot provide any information of
cross sections below a major crack (which crosses the
entire cross-sectional area)
• This test is not effective for integrity testing of piles with
highly variable cross sections
• Pile integrity testing is generally not suitable for testing
steel sheets, H-section or unfilled pipe piles because the
ratio of cross section/length is small
• Integrity evaluation may not be conclusive when the
acoustic reflection off the pile toe is weak
• It is difficult to distinguish the soil response and the pile
toe response
• Pile integrity testing cannot provide information of the
durability of concrete and steel reinforcing rebar.
References:
1. ACI Committee 228. “Report on Non-destructive Test
Methods for Evaluation of Concrete in Structures.” ACI
228R-13, 84p.
2. ASTM D5882. “Standard Test Method for Low Strain
Impact Integrity Testing of Deep Foundations.” ASTM
D5882 – 16.
3. Rausche F., Linkins G., Kung S. R. “Pile Integrity Testing
and Analysis.” Applications of Stress-Waves Theory to
Piles, F.B.J. Barends (ed.), 1992 Balkema, Rotterdam. ISBN
9054100826.
Drs. Farid Moradi and Hamed Layssi are co-founders of
FPrimeC Solutions Inc., a technology company in Canada. Dr.
Moradi and Dr. Layssi are registered professional engineers in
Québec and Ontario, respectively.
FPrimeC Solutions is a technology startup in Canada and is
specialized in the design and development of innovative testing
solutions for cost-effective and reliable assessment of infrastruc-ture
facilities. Their mission is to bring leading technologies and
make the next generation of testing solutions.
TECHNICAL
A pile integrity test provides acceleration or velocity
information to identify potential defects in the piles.
60 Q3 2018 www.pilingcanada.ca
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