CAPWAP (CAse Pile Wave Analysis Program) is a software program that estimates total bearing capacity of a pile or shaft, as well as resistance distribution along the shaft and at the toe. The program takes as input the force and velocity data obtained with a Pile Driving Analyzer® (PDA).

It is essential to post process PDA data with CAPWAP for at least one foundation element per job. CAPWAP completes the Dynamic Load Testing procedure and simulates a Static Load Test. CAPWAP 2006 has improved features for the analysis of drilled shafts and auger cast-in-place (CFA) piles.

The program includes a completely automated mode as well as adjustable parameters with which the user systematically improves the calculated results. CAPWAP works in English, Metric or SI units, and features a comprehensive help feature. The CAPWAP manual introduces the user to the wave equation theory and signal matching procedure on which the program is based.

Data collected since 1980 shows that CAPWAP results correlate well with actual Static Load Tests.


"We are very satisfied with the (PDA model) PAK and CAPWAP. I wonder why we didn't purchase them earlier."
- Hannu Jokiniemi, Tampere University of Technology, Finland