Foundation Repairs – Underpinning

Properties affected by subsidence are increasingly common. This can be due to new buildings and extensions being constructed on insufficient foundations, or with shallow footings on clay soil. ABC Anchor have developed a system which can stabilise the subsidence 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 at 0.8m-1m ctrs. Where the pockets have been dug, screw piles are installed to torques in excess of 3kNm, with the piles being screwed down into stable ground. Jacking plates can then be fitted to the piles and lifted using hydraulic jacks. Once all the piles are preloaded equally, the process is complete with the building stabilised and in some cases lifted back to original levels. Trenches are then backfilled with soil or type 1 if extra support is required. Repairing foundations using screw piles is not only quicker than traditional processes, but it also benefits from minimal noise and vibration.

ABC Anchors have worked with numerous window companies to support and lift subsiding extensions and conservatories.

 

Key Features

Can be hand installed for sites with limited access

Minimal disruption to property and surrounding area

Noise and vibration free operation

Option of lifting sunken foundations

We have worked with numerous window companies to support and lift subsiding extensions and conservatories.

Are you ready to start your project?