When the footing slab depths of multiple column foundations differ, placing piles becomes cumbersome because separate construction grids must be created for each footing depth. In addition, STAAD FDN requires compliance with the specified minimum distance from the pile center to the footing edge, as well as the minimum spacing between pile centers, based on the footing slab plane.

However, the current STAAD FDN workflow assumes that both the pile layout and the footing depth are already finalized before the design process begins, and that the footing depth is a single constant value. This makes pile arrangement inconvenient in practical design conditions where each foundation may have different footing depths.

Therefore, I request a functional enhancement that allows pile placement based on distances from the footing edges and the footing center for each individual foundation, regardless of variations in footing depth.