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Client: Sedgwick
Location: Oxford
Completed: March 2021
Budget: £40,565
Settlement remediation in a residential property
Insurers were faced with a property suffering from differential settlement of the outer wall footings and the inner walls and floors built off a 100mm thick concrete oversite. To add to the difficulty of the problem the house sits in a very tight site. Any form of excavation to underpin would be difficult and would involve temporary re-routing of drainage and water, electricity and gas.
The existing footings were founded around 800mm below ground level. STRESS were tasked by Insurers to find a geotechnical solution to the stop the slab and footings settling.
By using the unique ReFORCE ground permeation strengthening system STRESS could design a bespoke layout of piles to both support the external walls of the property and the slab, whilst fully working from inside the house. This immediately removed any need for diverting services, deep excavations and carbon hungry concrete underpinning.
It was necessary to take out the suspended ground floor but once that was done the full ReFORCE geopolymer underpinning to 2.5m deep could be completed in one week. Reinstatement of the floor, repair of the structural damage and reinstatement of fittings together with cosmetic repairs followed swiftly and economically.
Sustainable solution with a smaller carbon footprint than traditional resin injection methods
No deep excavations or concrete underpinning necessary
David Kitching
Stress UK,
Managing Director
This was another project where we were commissioned to carry out some specific remedial structural repairs to brickwork but were then challenged to find a solution for replacement of load bearing stonework at high level. We produced a temporary works design which was checked by CTP Consulting, and we thank Cliveden Conservation Workshop for their excellent stonework. It was a pleasure to work with a forward-thinking team and client.
