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The intake in Leirelva is a typical gravity dam. The penstock is laid with ductile cast iron pipes, where the entire length, about 2,150 m, is buried, and 1000 metres of the pipe are laid in a trench together with the pipes for Tverråga. The penstock runs through a steep and landslide-prone area, which meant that special considerations had to be made during the construction process with respect to the scope of the intervention and weather conditions.
