In the middle of February 2018 we completed the construction of the secondary lining of the U3 subway in Nürnberg, Germany. The lining consists of more parts - one-track tubes, twin-track tube, widening blocks. In total 19 blocks were concreted with total length of 320 m and tunnel cross section between 25 and 85 sqm. The thickness of the lining was 30 to 100 cm. We have used over 310 tons of steel and 2.500 m3 concrete.
