What is iCAP® ?


iCAP® is a signal matching program that works in parallel with the Pile Driving Analyzer® (models 8G or PAX) data collection program (PDA-S or PDA-L) and/or with the PDA-W program. It is totally automatic and thus provides a unique answer; no user intervention is needed or allowed. iCAP allows immediate capacity assessments during data collection and review, under ideal circumstances (driven piles of known geometry, see question 1059). The PDA program (on-site or remotely with SiteLink® ) sends data to iCAP without any user intervention. iCAP then performs an automatic signal match procedure, similar to the one available in the CAPWAP® program, but using faster algorithms. Depending on the blow rate of the hammer, and iCAP options selected, iCAP results might be a few blows behind the current installation data. The PDA displays the last available numerical and graphic signal matching results from iCAP®, along with the currently collected data. iCAP displays the following results: Numeric:

  • RU (total iCAP capacity)
  • SF (skin friction)
  • EB (end bearing)
  • MQ (match quality number – allows the user to evaluate the validity of the iCAP result)
  • JC (Case Method damping factor – allows the user to fine tune the CASE method results)
  • CSC – Maximum compression stress
  • TSC – Maximum tension stress
  • Load-displacement curve
  • Force in pile versus depth
  • Wave-up measured versus Wave-up calculated