Underpinning
Once our structural surveyor or engineer has confirmed that your house foundations need to be underpinned, possible after a period of monitoring, they will be able to tell you more about the type of underpinning that is best for your particular situation. It involves stages like Excavation, Preparation, Reinforcement, infilling and repairing the building.
Unipin Victoria can provide you with professional Underpinning service. Feel free to contact us or request a quote.
Our Work
UNDERPINNING
Underpinning a house is a method of strengthening the foundation of an existing building or other structure.
When is underpinning needed?
Under pinning is required when the original foundation is not strong enough to support the house which includes causes like:
- Footing being constructed on loose soil or uncompacted fill
- The original structure has changed
- Change in soil overtime
- Tree roots being close to the foundations or tree removal
- Poor drainage or broken pipes
The first signs that underpinning is required include:
- External cracked bricks
- Internal cracks in plaster
- Gaps between the window and walls
- Unlevel floor
- Jammed doors and windows
- Cracked flooring, slab or tiles
Repair process:
Stage 1: Holes formed in the wall to receive steel or precast concrete stools
Stage 2: Stools inserted and pinned to the soffit of brickwork over the opening
Stage 3: Brick work between pined tools removed to leave wall supported on pined stools
Stage 4: Reinforcement fabricated and placed around pinned stools
Stage 5: Formwork erected and beam cast
Stage 6: Formwork removed, beam allowed to cure before being pinned to the underside of the wall