

This is a simple revolving stair with a central column and thin-linear-supporting structure connecting each stair step to the centre. i used this stair in my final model between the below ground and the datum.
This stair is a bit tricky to walk on. anyway, it's still a stucture that can make people move from one level to another.

This stair is made by only one piece of metal.(steel, aluminum, etc) The piece is twisted in a special way to form steps like origami.

This is just a revolving stair surrounding a hexagon column. Simple but solid.








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