Case-Study_Gotthard-Tunnel_2

The world’s longest tunnel, the Gotthard Base Tunnel located in Switzerland, is a double-shell underpass with a combination of waterproofing system and drainage layer between the shotcrete outer shell and the concrete inner shell. Images courtesy Dörken Systems
The world’s longest tunnel, the Gotthard Base Tunnel located in Switzerland, is a double-shell underpass with a combination of waterproofing system and drainage layer between the shotcrete outer shell and the concrete inner shell. Images courtesy Dörken Systems

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