Construction supervision for the installation of new cable trays as part of the construction of the Riederwald Tunnel

Construction of cable conduit systems to accommodate cables of the 0.4-30 kV network as well as 110 kV high-voltage cables, including the sectional laying of pipelines of the drinking water and gas supply network. Pressing of protective pipes under railway tracks and soil preparation with subsequent liquid soil installation. Supervision of liquid soil installation by a certified quality assurance officer. Liquid soil according to RAL quality mark 507.