Competition Results and Event Closing Remarks-PPT Presentation

PPT Presentation

Pdf Summary

The HPW/DFI Helical Pile Prediction Contest concerns predicting installation torque at depths of 10 and 17 feet, using bore log B-3. Both test piles used 2⅞-inch-OD shafts and were installed on April 26, 2022, with an SA16-BE anchor drive.<br /><br />Pile 1 had three 8-, 10-, and 12-inch helices. It reached a final depth of 19 feet in 28.2 minutes. Recorded torque rose from 387 ft-lb at 1 foot to 3,314 ft-lb at 10 feet, then varied before reaching 8,007 ft-lb at 19 feet. Its reported peak torque was 9,167 ft-lb, compared with an 8,000 ft-lb target.<br /><br />Pile 2 had three 10-, 12-, and 14-inch helices. It reached 16 feet in 18.47 minutes. Recorded torque was 3,617 ft-lb at 10 feet and peaked at 6,428 ft-lb at 14 feet in the depth-by-depth data. The summary table reports a peak of 8,203 ft-lb against a 9,000 ft-lb target.<br /><br />The document includes torque-versus-depth records and a graph comparing the two configurations. It credits Terracon for the bore log and Sangeet Jasani and David Kerr of Dinamic Oil North America for the test information.

Keywords

helical pile

installation torque

bore log

pile depth

helix size

torque prediction

HPW DFI

shaft diameter

torque versus depth

pile test