My first Magazine dsi-info-23-en | Page 87

Construction—EMEA—Germany—Excavations The tiebacks were installed using superposition drilling. In some areas, there were up to 3 levels of anchors crossing each other, which required drilling tolerances of a maximum of 1°. The tunnel structure will be concreted as a trough structure in sections with floor slabs, walls and corners until the end of 2016. Afterwards, the excavation will be backfilled, and the tracks on the surface will resume operation. Owner Stadtwerke Augsburg Verkehrs- GmbH, Germany Contractor Stump Spezialtiefbau GmbH (as a Joint Venture), Germany Engineering Engineering association MDA Hbf, consisting of K+S Ingenieur-Consult GmbH & Co. KG and SSF Ingenieure AG, both Germany DSI Unit DYWIDAG-Systems International GmbH, BU Geotechnics, Germany DSI Scope Production, supply DYWIDAG Products 182 4-strand DYWIDAG Anchors, 140 5-strand DYWIDAG Anchors and 40 6-strand DYWIDAG Anchors 87