Construction methods
There are different methods for building an underground tunnel. These depend on how deep the line is, the soil it passes through and whether there are any buildings on the…
Geology and geotechnology
Knowing the precise geological conditions is of key importance to the people planning a tunnel construction. Where can you find fine-grained, soft and plastic rock, such a clay-like soil? Where…
The General Project
The so-called General Project involves the detailed inspection and planning of the intended route and its stations. Building on Wiener Linien’s network analysis, MA 18, the municipal department responsible for…
How to build an underground system?
Vienna is a densely populated city that has grown overtime, and it is suitable on geologically complicated land. Various soil formations overlap each other. The Danube and its tributaries are…