JBA Bentley has started work on a \u00a319m flood defence scheme at Sheffield Forgemasters\u2019 Brightside Lane site.<\/p>\n
The two-year civil engineering job will protect the steelworks and wider Lower Don Valley from repeat flooding by intercepting Bagley Brook where it enters the plant.<\/p>\n
A major underground system of attenuation tanks, transfer tunnels and a new pumping station will capture and store stormwater before releasing it into the River Don at a controlled rate of 8,000 litres per second.<\/p>\n
JBA Bentley will sink a 5-metre shaft to launch a tunnel boring machine that will drive a 320-metre tunnel, 12 metres below ground. The launch shaft will double as the pumping station and storage chamber.<\/p>\n
Craig Fisher, programmes director at Sheffield Forgemasters, said the system will \u201caddress a known flood risk which can affect both our plant and this part of the city.\u201d<\/p>\n
A section of flood wall along the Don will also be rebuilt to house the new outfall structure.<\/p>\n
The project fulfils planning conditions for Forgemasters\u2019 \u00a3400m site transformation, including its new 13,000-tonne forging line now under construction beside the Midland Mainline railway.<\/p>\n
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