Underpinning Systems


“Underpinning” is a method or means of providing a system that strengthens and/or supports an existing structure or building. The need for an underpinning system is usually due to a lack of stability within the supporting soils, an increase or changes in the loads within the structure (due to remodeling, additions, expansions, etc.), or the excavation or disturbance of the supporting soils (due to the nearby construction). The lack of stability within the supporting soils of a structure often results in foundation settlement and often requires underpinning as a means of foundation repairs. Construction that requires excavation of the supporting soils adjacent to an existing structure requires underpinning as a means of shoring or protecting the foundation of that existing structure.

Foundation Repair

Regardless of the type of structure, whether it is a residential dwelling, a commercial building, or an industrial facility if foundation repairs are needed, Carolina Foundation Solutions can provide the expertise and services needed. The need for foundation repairs is usually a result of poor soil conditions, requiring a pier or pile system which will provide the necessary support and stabilization. Carolina Foundation Solutions specializes in the installation of CHANCE Underpinning Helical Piers. Both the helical piers and resistance pier systems can be installed on sites where access is limited. The installation process is quick, creates little to no spoils, and provides immediate results. Carolina Foundation Solutions takes pride in providing the most effective, most cost-efficient, and most reliable methods of underpinning to ensure that the proper support and stabilization are provided.

Foundation Protection

Construction within close proximity of an existing structure often requires excavation or disturbance of the supporting soils of the existing structure. To minimize or eliminate damage and disturbance to the existing structure, it is important to properly protect and support the existing foundation. Carolina Foundation Solutions has an extensive resume of providing such solutions, especially through the use of installing CHANCE Underpinning Helical Piers.



The installation of underpinning helical piers is a proven method of repairing foundations that have experienced settlement and/or providing support, protection, and stabilization for existing structures. Underpinning helical piers transfer the weight of the structure from the base of the foundation (the footing) down to a layer of suitable load-bearing soils.

Expansive soils, high water tables, and/or poor fill material are just some of the conditions which can be encountered and that can be considered as inadequate for supporting the weight of a structure. These conditions often result in settlement or movement within existing structures and require the need for underpinning systems. Additions and excavations adjacent to the foundations of existing structures also often require the need for underpinning systems. The installation of CHANCE Helical Underpinning Piers is a superior solution and simply presents advantages and benefits that the other underpinning systems cannot. CHANCE Helical Underpinning Piers utilize instant torque-to-capacity feedback as a built-in means of quality control that eliminates uncertainty for engineers and contractors, providing quality throughout the project.

Advantages of CHANCE® Helical Underpinning Piers:

  • Low mobilization costs
  • Installed with small equipment
  • Fast installation
  • Installs in any weather conditions
  • Allows for immediate loading, no waiting for concrete to cure
  • No spoils created
  • No vibration
  • Quality control – field measurable torque
  • Consists of hot-dipped galvanized recycled steel, made in the USA
  • Consists of products that are ICC-ES Certified


  • There is no need to plan for the mobilization of large equipment.
  • There is no need to move around or haul off spoils.
  • There will be no need to wait for perfect weather conditions to pour concrete.
  • There will be no need to wait for concrete to cure.
  • There will be no second guessing or additional and extensive testing required to confirm the piles have reached the proper depth and are capable of supporting the specified weight.
  • The helical piles are environmentally safe.

Carolina Foundation Solutions specializes in the installation of underpinning helical piers. Since 1912, CHANCE has been manufacturing the most trusted and most used helical pile/pier/anchor systems in the world. Carolina Foundation Solutions is a certified CHANCE Installer and takes pride in using the best materials and providing the best solutions in the industry. For any projects that may require underpinning systems, please feel free to contact us.

Contact Carolina Foundation Solutions for the best team of foundation and structural repair and construction experts available to any business owner in the Carolinas!

GIVE US A CALL: 1-877-770-7050

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Repairs & Installation Services for Deep Foundations

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