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The stock of existing tunnels in Germany is obsolete and legislators have revised the guidelines, in some cases several times. If the obsolescence of a tunnel now demands repair or a structural...

Projects that go down in history. German Chancellor Dr. Angela Merkel reiterated this during her visit at the Herrenknecht AG on October 7, 2019. On a tour of the plant premises, company founder and...

For 40 years the STUVA has carried out a survey of tunnelling in Germany. Annually collected from clients, construction companies and designers are regularly published in consolidated form. An assignment prompted by a corresponding request from the International Tunnelling and Underground Space Association [1].

A research project on the expected costs and their development from the planning phase through tendering to invoicing was carried out in order to establish a reliable basis for the resource planning...

The internationally active company Bentley Systems develops construction software, which is also used on infrastructure projects like tunnels. In an interview with “tunnel”, Lutz Bettels, Vice...

Excavating the Trimberg Tunnel for the new motorway A44 Kassel – Herleshausen in Germany, the tunnellers encountered difficult geology and had to install a temporary top heading invert of shotcrete....

As an extension to the existing pump series P 215 to P 455, the German manufacturer Söndgerath Pumpen GmbH now presents two submersible pumps of the new P Series – the P 475 and the P 675. As from...

In the black of night, a train carrying eighty passengers is immobilised in one of the underground railway tunnels beneath the French city of Lyon – smoke begins to spread. The task now is to get the...

Norway’s mountainous topography of rivers, streams, and waterfalls is a haven for hydropower, and new initiatives are reinventing the renewable energy on a small scale. Such projects could have...