Helical Piles

MacLean-Dixie HFS™ are world leaders in helical foundation systems and are ideally suited for homogeneous soils such as soft to stiff clay or loose to dense sand.  MacLean-Dixie HFS™ helical piles consist of a central square shaft ranging in size from 1-1/2″ to 2-1/4″ square and are available in a wide variety of helical plate combinations depending on the soil conditions with capacities tested up to 300,000 lbs.

MacLean-Dixie HFS™ helical piles are screwed into the soil and extensions are added until the desired capacity is achieved.  To increase the lateral stability of the pier and its buckling resistance, the shaft may be encased with a steel or plastic pipe that is filled with grout. Underpinning brackets are used to transfer loads from the foundation to the helical piles and are systematically stressed using hydraulic jacks until the foundation is totally supported on the piles.

Some attributes of the Helical Pile Underpinning System:

• Modular design which installs to any depth
• Environmentally friendly with no spoils
• Noise and vibration free installation
• Installs with readily available small equipment such as a mini-excavator or Bobcat®
• Predictable capacity in the field confirmed by installation torque