Ensure the integrity of your critical structures with Cross-Hole Sonic Logging (CSL). Our advanced testing delivers unmatched accuracy, detects damage, and verifies repairs to safeguard your project’s success.
SACL uses the CHAMP-Q CSL system by Pile Dynamics to perform Crosshole Sonic Logging (CSL) and Tomographic Imaging (CSLT)—advanced methods for evaluating the internal quality of drilled shafts, caissons, slurry walls, and other concrete elements. These non-destructive tests are conducted in accordance with ASTM D6760-16.
How it works
CSL measures the time it takes ultrasonic signals to travel between probe pairs inside access tubes cast into the shaft. Slower travel times and lower signal amplitudes can indicate voids, inclusions, or poor concrete. CSLT enhances this by producing 2D or 3D velocity maps of the structure using multiple signal paths.
Key Advantages
From bridges to high-rise foundations, CSL and CSLT offer deep visibility into structural integrity —ensuring quality from the inside out.
Yes, Pulse Echo Testing (PIT) can be used to verify anomalies detected by Crosshole Sonic Logging (CSL) testing. While CSL provides a detailed assessment of the integrity of drilled shafts and other deep foundations by evaluating the sound wave travel times between pairs of access tubes, PIT offers a complementary method by sending a stress wave down the length of the shaft and analyzing the reflected signals. This can help confirm the presence, location, and extent of anomalies such as voids, inclusions, or cracks identified during CSL testing, providing a more comprehensive evaluation of the foundation’s condition. It is important to note, however, that anomalies at the pile toe are difficult to detect using PIT as they can be masked by the toe reflection.
Thermal Integrity Profiling (TIP) and Cross-Hole Sonic Logging (CSL) are both methods used to evaluate the integrity of deep foundations, but they operate differently:
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