Static Capacity Prediction by Dynamic Methods for Three Bored Piles

Abstract

Three bored piles were built and tested at the National Geotechnical Experimentation Sites, at Texas A&M University, to gather data on the reliability of large-strain dynamic methods to predict the static capacity of bored piles. The three piles had a nominal diameter of 0.915 m, a nominal length of 10 m, and some planned and unplanned defects. The piles were first subjected to a static load test and then four companies were asked to perform dynamic tests—namely, Statnamic and drop weight tests—and predict the static load test results. The paper shows the comparison between predicted and measured results.