ABSTRACT
The uplift capacity (Qu), showed in Figure 1, can be given by the following equation:
Qu = Qh + Qs (1)
where Qu = uplift capacity; Qh = uplift helix bearing capacity; and Qs = shaft resistance.
The uplift helix bearing capacity (Qh) is expressed as:
∑ 1 (2) where Qhi = uplift bearing capacity of the helix i; i = index from 1 to N; and N = number of helices.
