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OKThe massive superstructure has a high centre of mass; this is unfavourable in the event of a strong earthquake. As a result, we have to move the weir actuators downwards and install new gates between the existing weir pillars. As a result, the superstructure no longer serves any purpose and must be removed in order to be structurally secure in the event of an earthquake.
There will be a temporary passageway that will remain open during the entire construction period.
No. The area surrounding the weir is hazardous and swimming there is dangerous. After all, a large volume of water could be discharged via the weir at any time – even on a sunny summer’s day – for example, in the event of a machine breakdown at the power plant in Niedergösgen.