The helical flights are geometrically spaced along the shaft to provide minimal disruption of the soils as they are installed. A foundation bracket is then connected to support the failing foundation or specified terminations are connected to the installed shaft to support new foundations.
Round Shaft Piers are best used in compression applications and have a greater load capacity and lateral strength Round shafts are 2 7/8″ diameter, 3.5 inch diameter and 4.5 inch diameter. The Round Shaft lead sections utilize 1, 2 or 3 helix flights which are 8″, 10″, 12″ and 14″ in diameter.
Square Shaft Piers are more suited for projects that require greater tensile strength or torque capacity. Square Shafts are 1.5, 1.75 and 2.25 inch Round Corner Square (RCS). Square Shaft lead sections utilize 1, 2 or 3 helix flights which are 8″, 10″, 12″ and 14″ in diameter.