Supporting the existing house when creating a basement under an extension is always the biggest challenge. Here sheet piling was used during the excavation and mass filled, hit & miss reinforced concrete sections were excavated and cast in a strict sequence as detailed by the structural engineer
Project Details
During the renovation of a house in rural Hertfordshire, a new basement was built under the extension. The excavation was stabilised, and house underpinned. From there a new concrete slab and walls were built, creating a new structure.
The new ground floor was cast in place and the whole basement waterproofed using a type C, cavity drainage membrane, linked to a sump and two pumps.
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| Location: | Hertfordshire |
| Completed: | 2009 |