Magnum Push Piers
Steel push piers down to deep bearing ground, each tested.
Signs of subsidence
- Stepped cracks in brickwork and cracks that keep growing
- Doors and windows that stick or no longer close
- Floors that slope
- A façade, roof edge or trims that lean away
- Cracks between an extension and the main building
Step 1: find the cause
In a subsidence survey we map the crack pattern, the soil and the existing foundation. Where needed we expose the foundation locally and fit crack gauges. Only then do we choose a technique, or sometimes simply keep monitoring.
Step 2: the right technique
- Bearing ground lies deep, or the walls have settled a lot: Magnum Push Piers down to firm ground
- The weak ground is shallow, down to ± 3.5 m under the foundation: Deep Lift with expanding resin
- Sometimes a combination, as in Erquelinnes: first resin, then push piers
Step 3: stabilise and lift
Because the piers carry the building, we can lift the foundation back in a controlled way where possible. In Erquelinnes we lifted the side wall by 20 to 30 mm. You usually keep living in your home: we work from the outside, without vibrations.
With serious damage, have a structural engineer assess the situation. Soiltek is a specialist contractor: we record, measure, propose a technique and carry out the repair, in consultation with your engineer.