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According to detailed analyses that were added to the SIA standards relating to structural retention in 2017, retaining the weir in its current form is actually now a realistic option. The detailed analyses, which better depict the actual behaviour of structures in the event of an earthquake, enable buildings to be renovated in a sustainable way and, according to the experts, provide undeniable, clear, scientific evidence of the Winznau weir’s ability to withstand earthquakes.
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.