Sonic Echo/Impulse Response
Sonic Echo/Impulse Response
The Sonic Echo (SE) method is normally conducted in conjunction with the Impulse Response (IR) method together as the SE/IR method. These methods are used for low strain integrity testing of piles and deep foundations for length and integrity determination. The SE/IR methods are used on both new and existing foundations and are performed by impacting the foundation top and recording echoes from a defect or the foundation bottom with a nearby receiver(s).
The methods work best for columnal type foundations, such as piles and drilled shafts, but have also been used successfully on mat foundations, abutment walls, and similar structures. The methods require access to either some small part of the foundation top, or part of the upper side of the foundation.
The SE method performs the analysis of the data in the time domain, while the IR method performs the analysis in the frequency domain. The two analysis methods complement each other to allow the most accurate foundation length and defect analysis possible.
Applicable on:
- Concrete and Wood Foundations
- Drilled Shafts
- Driven Piles and Auger-Cast Piles
Test for:
- Cracks
- Voids
- Soil Intrusions
- Uncured or Weak Concrete
- Foundation Lengths
The SE/IR System
The Sonic Echo-Impulse Response test method (also known as the Pile Integrity Test, or PIT) is designed to determine the length and integrity of foundations when the top or part of the upper side of the foundation is accessible.
- Quality Assurance
- Evaluate the integrity and determine the length of deep foundations
- Variety of Foundations
- Test piles and drilled shafts, mat foundations and abutment walls
- Variety of Materials
- Applicable on concrete, wood, and round steel pipe foundations
- Targeted Testing
- Impact a pile/foundation and the resulting echoes are able to detect either a defect or the foundation bottom with a nearby receiver(s)
- Any Age
- The SE/IR System can be used on both new and existing foundations
