Reinforced concrete culverts for South Humber Bank's intake andoutfall cooling Water culverts were precast at a site in ImminghamDocks. Seventy-four 600 t Units 45·65 m long × 5·98 m wide ×3·60m high were cast on a prepared bed, lifted and transported on modulartrailers to barges for towing to the con- struction site. A speciallyfabricated frame, suspended from two shearleg barges, lifted theunits from the transport barge and lowered them into the water. Inthe fore- shore area where site of special scientific interest (SSSI)restrictions applied, the units were floated into a wet cofferdambefore being lowered onto a prepared bed by winches supported on thecofferdam frames.
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