Helical piers are steel shafts with round helix plates that are drilled into the soil until they can support the structure. Helical piers are great for repairing walls that bow out, lifting foundations, or giving stabilization to foundations that have settled, heaved, or failed.
Holes are dug around the exterior of the building at points to allowing access to the foundation. Pier depth will vary based on the soils under the structure. Brackets are attached to the pier and foundation to allow for synchronizing the lifting process. The structure will then be lifted to a maximum practical recovery. Holes are then re-compacted, and the job site is cleaned up. There is limited stress applied to the structure which is being repaired. The installation process produces no vibration, and minimizes the risk of damage to adjacent structures.
Helical piers can be used for both residential and commercial structures. They are very useful when there is structural damage to the foundation.