36 tonne double box culverts made fromconcrete with post-activated seals

Since the planned extension of one of the most important German motorways would have placed undue stress on the sewer network underneath, a new robust sewer section almost 50 m long had to be installed. After the foundation had been put in place, the 17 sewer double box culverts were lifted into the large excavation pit by a mobile crane.

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