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CSL waterfall diagram

How to test a pile using the CHUM for
Crosshole Sonic Logging (CSL)?

  1. Prepare the pile with access tubes (usually one tube per 30cm/1' diameter)

  2. Wait at least 5 days after casting

  3. Cut and fill the access tubes with fresh water

  4. Place depth encoders pullies or the first two tubes

  5. Lower the two transceivers (Transmitter and receiver) into the tubes through the depth encoders

  6. Start the CHUM software

  7. According to the software instructions, pull both transceivers to the top of the tube at a speed of up to 2m/section

  8. Inspect the results and continue with the other tube combinations

Pile Crosshole test site using Piletest CHUM
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