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German rail upgrade calls for Strabag to undertake major ground improvement

Strabag

A Strabag consortium has been awarded the contract for the Oldenburg–Wilhelmshaven rail upgrade line in Germany, which will call for extensive ground engineering input.

The 5.7km railway line will run within the municipal limits of Sande in the district of Friesland, Lower Saxony and improve railway link to the container terminal at Jade Weser Port

Peat soils in the area will call for 1M.m³ of sand to be placed on the route as a surcharge in order to manage settlement.

In the vicinity of high embankments, 200,000 linear metres of geotextile-encased sand columns with a length of around 12m to 15m each will be installed. These columns will help to reduce the level of settlement while stabilising the subsoil.

In the lower embankment areas, settlement will be accelerated through 2,600km of vertical drains.

The new track section will bypass Sande to the east of the municipality and comprises a 4km long double-track new line as well as the addition of a second track to an existing 1.7 km section.

The €115M (£103M) construction contract is scheduled to last three and a half years.

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