Civil Engineering Commons^™

Helical Pile Installation Torque And Capacity Correlations, Jared Louis Harnish

Electronic Thesis and Dissertation Repository

Large diameter helical piles are being utilized increasingly to support large compressive and tensile loads. Both the magnitude of the required installation torque and the pile capacity can be directly attributed to the soil shearing resistance developed over the embedded area of the pile including the shaft and helical plates. Hence, the pile capacity can be correlated to the installation torque. Such correlations are widely used in helical pile industry as a means for quality control/quality assurance. However, the reliability of capacity-torque correlations for predicting the large diameter helical piles is adversely affected by the inaccurate measurement of the installation …