The status plan and fire safety plan
Once an underground line has been build, another plan is drawn up: the status plan. This documents the current state of the buildings, the electricity and communication lines, and the…
Once an underground line has been build, another plan is drawn up: the status plan. This documents the current state of the buildings, the electricity and communication lines, and the…
None of the planned U2/U5 routes will be elevated, largely because the urban area above is far too dense. It was possible to have parts of the U1, U2 and…
In the cut-and-cover method, a digger or a milling machine cuts slots in the ground that are then filled with concrete. These will later form the side walls of the…
In contrast to the cut-and-cover method, the New Austrian Tunnelling Method (NATM) is a mining technique that was first used in 1955 when building a tunnel for an Austrian hydropower…
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