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PORR Verkehrswegebau Berlin commissioned with open trench construction for SuedOstLink

PORR Verkehrswegebau Berlin has secured a contract for civil engineering works for section A1 of the 50Hertz power motorway SuedOstLink. The first 18 kilometres of the A1 section will be constructed as an overhead line. PORR Transport Route Engineering has been commissioned to lay the protective pipes in open trenches, construct crossing structures, as well as to construct access roads and work areas for the subsequent 29.6 kilometres as part of the A1.1 mixed lot.

PORR Verkehrswegebau Berlin has secured a contract for the civil engineering works for section A1 of the 50Hertz SuedOstLink electricity motorway.

 

© 50Hertz

Cable protection pipes are laid at a depth of 1.3 to 1.5 metres.

Since two 525-kilovolt direct current connections are being laid for the SuedOstLink, separate cable trenches are required. External specialist companies will take over the enclosed laying for the underpassing of roads or water.

To ensure efficient workflows, the project is being implemented using the Lean Construction Method in a clocked construction method. This involves the services along the cable route being carried out by several synchronised work crews. ‘From property owners to suppliers and contractors for cable pulling work, we work with a large number of parties during the planning. In addition, there are specialised construction lots such as HDD and pipe jacking. Orchestrating this variety of interfaces will be a real challenge, where everyone has to play perfectly in sync,’ says branch manager Dirk Lohne.

Due to the high demands on soil quality, PORR Transport Route Engineering is developing its own soil management concept. This includes processes such as soil removal, soil treatment in a mobile mixing plant, soil testing, as well as soil replacement.

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