The Follobanen (En: Follo Line, Oslo, Norway) is a large project creating a new railway from Oslo to the South. It includes the construction of a large tunnel, and a landtunnel just south of Oslo Central Station.

As the first bend of the railway line hits the historical medieval centre of Oslo, it is necessary to take protective measures. MVH Consult works with the local office of NIKU to perform valuable monitoring of redox conditions in the archaeological layers.

We installed redox potential and temperature sensors in two profiles along the new sheetpiling. Other partners installed oxygen and continuous pH sensors. Together these will give an insight on the effect of building a sheetpiling next to an archaeological monument.