Constructex completed repairs to a flood wall located on the River Thames.

The wall was suffering from settlement and required extensive underpinning.

The scheme required the installation of continuous-flight-auger (CFA) piles

which were then structurally connected to the existing flood wall to prevent

further settlement. The height of the flood wall was then increased to ensure

that the flood wall offered sufficient protection to the area.

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The CFA piles had to be installed between sheet pile wall tie bars, with

approximately 500mm tolerance to avoid a clash. Particular emphasis was

therefore placed on precisely identifying the tie bar locations. This included

localised excavation, electromagnetic  and enhanced GPR surveys.

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The works required an Environment Agency permit to be obtained because

the work was being carried out to a flood defence structure. 

 

Constructex acted as Principal Contractor and employed a specialist

sub-contractor to install the CFA piles.  
 
The site had difficult access and was occupied a narrow strip along the

Thames pathway. We were able to maintain public access along a reduced strip throughout the works.  
 
After the main works were complete, we completed finishing works to the paving slabs, brick walls and vegetation along the Thames pathway.
 
The project duration was approximately 3 months.