Project Value
£2,400,000
Client Name
Carillion
Project Type
Flood Defence
CPC Civils were successfully awarded the Lower Don Valley Flood Defence Project contract in September 2015 and completed works in June 2016. Lower Don Valley was a flood defence scheme in the centre of Sheffield.
The scheme involved increasing the existing flood defence height to ensure protection for up to 1 in 100-year flooding. The project involved constructing 140m of reinforced concrete walls and footings, cladding works in accordance with planning permissions, and increasing the height of the 110-meter-long existing wall by 3 courses.
To ensure delivery of such a complicated project, liaison with all the stakeholders was essential and critical to the success of the scheme.
To ensure protection of the environment and local businesses CPC Civils installed 155m of temporary flood defences on Nursery Street using a Duo Block system. This not only ensured their protection, but minimised any disruption during the construction phase. Furthermore, all plant used on the project was fuelled with ‘Bio Oil’.
In line with the client’s core values, the core workforce employed to undertake the project were based in Sheffield.
Furthermore, a satellite office was set up in Sheffield to support the local work, we are proud to confirm that this has now become a permanent office for CPC Civils.
Works on Nursery Street
- Erection of 155m of temporary flood defence wall along Nursery Street using Duo Blocks.
- Taking down 140m of stone/existing brick and concrete infill wall to design formation.
- Constructing additional concrete footings as necessary and potential works to the existing wall below formation.
- The construction of approx. 140m of reinforced concrete wall to defence level which is to be founded on top of the existing wall.
- Raising 110m of 327mm thick brick wall to defence level by removing the existing coping, raising the wall by 3 courses and installing the existing coping
- Raising an existing concrete ramp to design defence level.
- Construction of new footpath and making good the existing footpath as necessary.
- Taking down to store and re-erecting 135m existing pedestrian fence.
- Constructing three brick buttresses to the cellar riverside wall of a semi derelict building adjacent the river and increasing the cill height of the cellar’s riverside windows by constructing internal walls up to the design defence level.
Works on 400 Series Interventions
- Taking down 300m of existing brick and stone wall to design formation.
- Constructing additional concrete footings as necessary and works to the existing wall below formation.
- The construction of approx. 160m of reinforced concrete wall to defence level which was founded on top of the existing wall.
- Concrete gravity retaining walls.
- The construction of approx.140m of 327mm thick brick wall on top of existing wall to defence level.
- Construction of new footpath and making good the existing footpath as necessary.
- Erection of new handrail in areas of low wall.
- Raising 250m of existing land up to 700mm by the construction of a bund with a central impermeable clay core.
- Raising the existing footpath to Five Wears Walk to the design defence level.
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