Foundation Repair



Underpinning Installation

MacLean/Dixie Piers have been used to stabilize and/or re-level residential and commercial structures that have undergone differential movement resulting from the influence of problem soils and/or home maintenance. Foundation movement can be caused by highly expansive clay, improperly compacted fill material, degradation of organic subgrade material and improper grading and/or watering along the perimeter of the foundations.


Foundation Repair In General

Whatever the cause of the distress, foundation movement can significantly devalue a home, create livability concerns for the occupants and may render the home structurally unsafe. MacLean/Dixie Piers have been proven to restore the load bearing function of distressed foundations and re-level severely damaged foundations to nearly as-built conditions.

A helical pier is a cost saving alternative for foundation support or tieback applications.

It allows for:

  • Significant cost savings.
  • Predictable holding capacity and performance.
  • Minimal site impact.
  • Reliability in areas of poor soil conditions.

Helical piers are engineered, tested and have a proven performance record.

  • Foundation Repair / Underpinning
  • Installation of helical piers by trained, certified installers.
  • No cure time required. Immediate loading of pier upon installation.
  • Future adjustment available if required.
  • Minimal site impact. This allows very little disturbance to landscaping and interior finishes.
  • Allows for limited access to building interior locations.





Piering bracket attachments are installed by qualified and trained helical steel pier dealers/installers as specified in the approved plans. For interior piering purposes, a portion of the foundation slab or subfloor is removed and soil excavated to create “L” shaped cavities to accommodate the underpinning bracket. For exterior piering purposes, the perimeter backfill soils are removed to the bottom of the foundation wall and the above referenced “L” shaped cavities are formed. The exposed foundation surfaces are prepared and smoothly dressed to receive the piering attachment (“lifting bracket”) without obstruction on the bearing or facing surfaces. The attachments are pinned firmly to the foundation by driven or threaded fasteners. A hydraulic/pneumatic jack is positioned for foundation adjustment. The jack is then actuated to transfer the structural load from soil to piers. The foundation and/or structure are monitored for elevation change, using an optical or electronic level. The jack is stopped when the foundation or structure baseline reaches predetermined height as measured by an optical or electronic level.