Types of Underpinning
GSI applies multiple underpinning methods based on soil conditions, structural demands, and constructability constraints.
Structural Reinforcement Underpinning
This approach strengthens foundation support by installing load-transfer elements such as micropiles, mini-piles, or concrete piers. These systems transfer structural loads to competent strata and are often used when deeper support is required.
Ground Improvement Underpinning
In some conditions, stabilizing the soil beneath the foundation provides the best outcome. Techniques such as compaction grouting, permeation grouting, or soil stabilization can improve bearing capacity, reduce voiding, and create more uniform support.
Each design is developed through engineering analysis, site assessment, and constructability review to support predictable performance and safe installation.
