When Are Helical Piers Used?
Ideally, they are installed before a structure is even built! In fact, another industry term for helical piers is "new construction piers", but they can also be used in retrofit applications. Most commonly, helical piers are installed when high water tables, fill soils, or expansive and unsuitable soils are present. Often, they are found useful when repairing foundations on lake houses, cabins, and cottages, although they can be used elsewhere as well.
Check out this Grip-Tite® Video that Elaborates on Helical Pier Installation