UNDERPINNING
Properties affected by subsidence are increasingly common. This can be due to new buildings and extensions constructed on insufficient foundations, or shallow footings on clay soil.
We use a helical screw pile system which can stabilise and, in some cases, lift the building back to its original level.
The process involves digging around the outside of the failed structure to expose the base of the concrete foundation. Pockets are then dug under the foundation. Where pockets have been dug, screw piles are installed down to stable ground.
Jacking plates can then be fitted to the piles and lifted using hydraulic jacks.
Trenches are then back filled with soil or type 1 if extra support is required.
Repairing foundation’s using screw piles is not only quicker than traditional processes, but it also benefits from minimal noise and vibration.