Victoria Embankment Combined Sewer Outlet - Tideway Central

As part of the works on the Tideway project, Barhale was awarded
a contract bythe Ferrovial Construction Laing O’Rourke JV (FLO) on
the central section to construct the tunnelling and civils elements
between the existing Combined Sewer Outlet (CSO), located under
the Victoria Embankment river wall and the new main tunnel being
constructed under the River Thames. Barhale successfully undertook
the pilling, dewatering, shaft sinking (by using three methods), tunnel
construction, earthworks and RC structures.

Barhale constructed a secant pile wall behind the Victoria
Embankment river wall with the support of Expanded, one of our
specialist supply chain partners. The logistics involved working in
a narrow footprint access road, leaving a gap of 300mm between
the piling rig and the site hoarding. After completion of the secant
pile wall, 2 gas mains (30” and 36” medium and low pressure) were
diverted behind the wall. Inside the cofferdam, Barhale lifted a 50T
pilling rig to construct 70no 1200mm contiguous piles for the new
river wall, and 42 600mm piles for the new CSO foundation.