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Marsdiep crossing between Den Helder and Texel
The Marsdiep is a 4 km wide stretch of water between Den Helder and Texel Island, located in the north of the Netherlands. It is crossed by a busy shipping lane for commercial boat traffic and also provides access to the port of Den Helder which is the biggest port of the Dutch Navy. The water depth at Marsdiep is 32 m (LAT). more right arrow
WASSER BERLIN INTERNATIONAL 2017 - Award presented by the German Society for Trenchless Technology (GSTT)
Outstanding projects abroad received GSTT awards: Silver went to the project entitled 'Danube Undercrossing – Interconnector Romania – Bulgaria’, commissioned by Transgaz & Bulgartransgaz. more right arrow
New Culverts for Koblenz
Last century, three pipelines were installed on the large bridges in the city of Koblenz, Germany, to supply the city to the east of the Rhine with gas and water. The planned demolition of one of the bridges and the need for restoration of the pipelines now required replacement of these pipelines to maintain supply to this area. more right arrow
Interconnector Bulgaria – Romania / Danube Crossing Marten – Comasca
Some years ago, the Bulgarian and Romanian governments applied with the EU for co-financing to upgrade the existing cross-border gas supply network, resulting from that an invitation to tender was issued in 2011. more right arrow
580 m HDD in extremely difficult ground
The soil consisted of layers of sand and mudstone, marl and gravel with boulders, superimposed by 20 - 30 m gravel with stones and boulders. TIGF is the major gas network owner in South West France and is facing on some of its networks the demand to perform system improvements. In compliance with these improvements, a gas line, DN 350, located between the communities of Allier and Momères near the offshoots of the northern Pyrenees, needed replacing. more right arrow

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