U-bahn is the German contraction for Untergrundbahn or “underground railway” comprises eight lines, serving 96 stations, and encompassing 103.1 kilometres of routes.
engineering and technical supervision.
carousel segment formwork.
TBT TUNNEL 2750 RADIUS – SYRIA
Tunnel segments
THE CHANNEL TUNNEL – FRANCE
Tunnel segments
LOCHER – ZURIG
Tunnel segments
GRAUHOLZ TUNNEL
Tunnel segments