1 Correction to: Geotech Geol Eng https://doi.org/10.1007/s10706-020-01385-4

In the original publication of the article, the coefficient of determination (R2) was mistakenly written as “0.99” in Figure 6a. The actual value of coefficient of determination (R2) is “0.81”.

The corrected Fig. 6a is provided below.

Fig. 6
figure 6

Load distribution under the helix with increasing helix diameter a comparison of load on central shaft under helix with straight pile tip load