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    Jørn's geometry black

    Jørn's geometry black

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    Jørn Utzon's drawing geometry of the roof of the Opera House in Sydney 1961.

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    When you look at the four shells, they look very simple. But it is a very complex form.

    The drawing describes the geometry of the roof of the Sydney Opera House. It consists of spheres and circle strokes. There are countless overlaps, and this is where the geometry suddenly emerges.

    Jørn won the competition to build the Opera House in Sydney in 1957. But it was not until 1961 that Jørn and his design studio cracked the code and found the technical solution to how they should actually build the roof on the proposal they had submitted several years earlier.

    They had tried all possible solutions on how to construct the wild roof in reality. It was the first time in world history that something like this had to be built.

    For example, they had tried to describe the construction mathematically with parabolas, but here the shape became too flat and it could not be built. They had tried it all.

    The problem was that the roof structure had to be described, so that they could make some precise drawings that could be built according to. They also had to be able to make calculations to see if the roof could even support.

    It was only in 1961, when the workers in Sydney had finished building the platform and were about to start work on the roof, that Jørn and his design studio found a solution.
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