Subway Dortmund, contract section 10.1

Period 2002 to 2003
Location Dortmund, Germany
Description Initial shaft with 6 tunnel-drivings, single-track subway-tunnel
L: ca. 1,5 km
A: ca. 80m2
Geology Cretaceous green sandstone, marl, Quarternary soils
Task Engineering-geological documentation, geological-geotechnical consulting
On behalf of Wayss & Freytag