Case study Leicester

The Problem
The detached property in Leicester had suffered subsidence from clay shrinkage.

In front of the property are two large trees located on the pavement. The trees belong to the local authority who have refused permission to have them removed.

Site investigations had already been undertaken and tenders issued to undertake the following building reinstatement works:

  • Piled raft to original house and garage
  • External – walls to front and rear. Drive
  • Internal – Lounge, kitchen, hall, GF shower, rear dining room, landing, 2 bedrooms, bathroom and garage

Optera were awarded the job through competitive tender process and designed the piling arrangements as shown above for approval prior to commencing.

The Solution
The solution to install 53 piles and a raft amounted to only 50% of the workload. The remaining works included the strip out and storage of the kitchen, staircase and ground floor shower room and the subsequent reinstatement of the same along with associate electrical, plumbing and carpentry works.

We were forced to redesign the type of pile employed on the project due to unforeseen ground conditions which were not identified within the tender documentation. The slab was protected with 220mm anti heave board.

Externally, we removed and re-laid the driveway with a flexible finish. Due to the TPO status of the street trees and the physical presence of roots projecting through the drive, it was decided that the stoned finish allowed a flexibility which could not be accommodated with traditional coverings such as macadam or block paving. All exterior cracks were repaired and front elevation redecorated upon completion.

The job was completed on-time and within budget.

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