Porr is forging ahead with the construction of the Green Line for the Doha Metro abreast of schedule for the client Qatar Railway Company. In late 2015, Porr was also commissioned to produce the solid...
The 15th Swiss Tunnel Congress (STC) will take place in the Kultur und Kongresszentrum Luzern (KKL) from 15 to 17 June 2016, organised by the Swiss Tunnelling Society (STS). The annual STC with accompanying exhibition and an additional excursion day has ensured itself a fixed place in the calendars of tunnellers as a platform for clients, designers, engineers, suppliers, service providers, contractors and the industry.
The DB Projekt Stuttgart–Ulm GmbH awarded the contract to build the 8176 m long Albvorland Tunnel on the new Wendlingen–Ulm route to the Swiss construction and service provider company Implenia in late December, 2015. The contract is worth some 380 million euros.
From October 19 to 21, 2016, the third edition of the trade fair ExpoTunnel will take place in Bologna, Italy. The underground technologies exhibition will present key themes of tunnelling and...
On February 28, 2016, a referendum held in Switzerland narrowly decided in favour of building a second bore for the Gotthard Road Tunnel. The controversial new bore will be provided with two lanes to cope with traffic from the existing 17 km long tunnel opened in 1980, which urgently needs to be repaired and upgraded. Afterwards, both will function as single-lane directional tunnels as established by law.
The German trade fair InnoTrans has made a promising start to the event year 2016. “With the expiry of the registration deadline, more than 100 percent of the exhibition space had been requested....
Since January 2016, Dipl.-Ing. Christian Kotz-Pollkläsener (45) has reinforced the board of the German consultant Zetcon Ingenieure alongside Dipl.-Ing. Ulrich Pöggeler. Kotz-Pollkläsener is...
There was reason to celebrate on February 27, 2016 during the construction of the Albabstieg Tunnel on the new Wendlingen-Ulm route. Between the portal at Dornstadt and the access tunnel in the Lehrer Tal valley, in the early evening the tunnellers blasted the final block of rock at a depth of 40 m in the western bore. After the breakthrough, there is now an uninterrupted tunnel connection.
In summer 2016, the 1796 m long single-bore Branich Tunnel is due to open as part of the bypass for the small German town of Schriesheim, north of Heidelberg on the Bergstraße. About 1600 m are...
Based on the Deutsche Bahn guideline (RiI) 853, verification of computational fire protection was undertaken for the inner shell of the Steinbühl Tunnel. Initial calculations had revealed that in order to confine concrete spalling, a non-contractual procedure calling for the application of a concrete mix with PP fibres would be required. As a result, additional computational verifications for fire incidents were undertaken on the part of the client as a “second opinion” for the case of fire. This culminated in proving that the inner shell can indeed be verified without PP fibres being applied by taking advantage of possible optimization factors.
