Biggest ever combiwall?
The Port of Muuga on the Gulf of Finland south coast is seeing what could be, said Danish contractor Per Aarsleff, the largest ever combination steel-pile retaining wall ever built.
Part of the work for the new container terminal extension means driving 420 tubular steel piles, each up to 1.67m diameter and 45m long deep into the seabed.
The continuous peripheral combiwall and adjoining breakwater will form an enclosed basin, which is being filled with 1.5M m³ of sea-dredged sand to reclaim the new 180,000 m² extension to the terminal area.
It has not been easy – the site team, with its fleet of specialist marine plant, has been coping with freezing temperatures, strong winds and rough seas at the exposed site.
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