The concept is founded on the principle of turning a screw anchor into stable subsoil strata until the torque applied indicates that the necessary load capacity has been achieved. Adjustable brackets are then attached to the base of your foundation walls, connecting the screw anchors to the foundation. The weight of your home is then shifted to the screw anchors. In the process, foundations, walls and floors are repositioned and retained from further movement.

This innovative system contrasts with other methods which use the structure’s weight to force pipes down into the ground. Pipe-pile or skin-friction systems (without helix plates on the shafts) can involve costly and time-consuming construction methods. Due to the extensive excavation they require, site features such as walkways and landscaping are often disturbed. HELICAL PIER Foundation Systems may be installed only by contractors who have been certified by the Chance Company. The load-bearing steel shafts are screwed into the ground independent of the structure and their bearing or holding capacity is verified as the system is installed.

      HELICAL PIER ® Foundation Systems advantages:

• A time-proven, versatile and technically sound system
  in use for over 90 years
• Lower cost — both for the system and its installation
• Faster installation than other methods
• Very limited excavation — site is minimally disturbed
• No heavy equipment required
• Installs in limited-access areas
• Used in new home construction to enhance foundation strength on sites with poor soil conditions