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Shaft cover beams installed at Dormay Street

The completion of the shaft at Dormay Street is one step closer after the installation of two beams to hold the shaft cover.

The two beams were precast off site and installed in one day using a 200 tonne mobile crane. 

The cover slab is scheduled to be poured in the next couple of months and will sit atop the beams to close off the shaft.

Stephen Lakis, the Project Manager for Dormay St and King Georges Park said: “With the casting of the cover slab and closure of the shaft, work at Dormay Street will change focus to the mechanical, electrical, instrumentation, control and automation (MEICA) equipment installation, and then to the testing and commissioning phase.”

Dormay Street is on existing Thames Water land that sits between the King George’s Park and Carnwath Road Riverside and is being used to connect the existing local combined sewer overflow (CSO) to the main tunnel.

Here, Charlotte, one of the six Tideway tunnel boring machines (TBMs) was ‘launched’ and has completed the construction of the Frogmore Connection Tunnel – the connection between King George’s Park to Carnwath Road, linking sewer overflows into the main tunnel.