When the geologic and geotechnical investigations conclude that sinkhole activity or ground settling is occurring at the site, the Engineer could recommend that underpinning be utilized to stabilize the structure to minimize and further subsidence damage.

Every building responds differently to being stabilized through the underpinning process. It is our goal to restore the elevation without causing additional damage. During the installation phase of the project C&N will keep a detailed record of the drive pressures and depth achieved for each location. This data allows C&N to determine the ultimate capacity of each pier. Upon completing the installation of these piers, they will be interconnected via multi-valve manifold and hydraulically activated to restore the structure as closely as possible to its original elevation. During the elevation restoration stage of the project, or ‘lift’, C&N will closely monitor the movement of the structure.

Continuous monitoring by C&N and the Engineering firms personnel during remediation is always done to verify compliance that these recommendations meet the necessary adjustments to the remediation programs. This will also allow the engineer who created the remedial design to certify that C&N’n remediation met the design specification after the professional stabilization is complete.


Complete Foundation Services

Depending on the professional recommendation of a geotechnical and/or structural engineer, C&N will use one or more of the following methods to deal with your sinkhole problem aside from underpinning as described above:

  • Residential Foundations
  • Commercial Foundations
  • Compaction Grouting
  • Chemical Grouting
  • Underpinning
  • Permeation Grouting
  • Pre-Construction Piers
  • Floor & Concrete Leveling
  • Cosmetic Repairs
  • Helical Piers