Advantages of Helical Foundation Systems
1) High capacity deep foundation alternatives - Ultimate torque-rated capacities on the order of 130 kips may be achieved with helical shaft sizes up to 4.5 inches in diameter.
2) All-weather installation - Helical piles can be installed through inclement weather and freezing temperatures.
3) Installed in areas of limited or tight access - Helical piles can be installed with hand-held equipment, mini-excavators, skid steers, backhoes and larger track equipment.The equipment and drive heads can be sized according to the project design loads, as well as site access.
4) Vibration-free installation - Rotary installation of helical piles does not produce ground vibrations, unlike traditional driven piles or rammed aggregate soil improvement options.
5) Install quickly without generating spoils - Helical piles do not auger soils to the surface. Therefore, there are no hauling or disposal costs for spoils similar to auger-cast piles or drilled shafts. For contaminated sites, disposal and or treatment of disturbed material can be extremely costly or make the project cost-prohibitive.
6) Support of temporary structures - Helical piles can be removed from the ground by reversing the installation process.
7) Foundation concrete can be poured immediately following installation - Installed steel piles do not require a curing period like drilled shafts or auger-cast piles.
