Case Study

Project Brighton

Project: Soil nails with mini gabion mattress facing
Location: Brighton Hospital, East Sussex
Contract Duration: 4 Weeks
Slope Extent 80m long up to 7m high
Area Treated: 450m2
Soil Nails/Piles Installed: 200+
Equipment: Marini drilling rig


A new Clinical Administration building was to be built on the existing Brighton Hospital site, which due to the footprint of the building, the requirement for a maintenance strip and the restrictions of the site required the existing perimeter chalk slope to be excavated to an angle of 80 degrees to provide adequate space for the new building and its future maintenance requirements.
The new slope needed to be stabilised to protect the proposed new building and the existing residential properties above. The solution adopted involved the installation of soil nails, to stabilise the slope, with a mini gabion facing to protect the surface of the slope and fin drains between the slope and the new facing to alleviate any possible water issues.
The slope was excavated from the top down with soil nails, drainage and facing mesh installed as the excavation progressed to stabilise the newly formed slope. Once the slope was formed to its full height the facing was filled with stone.

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