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        Tower Octagon

The tower shape is that of an octagon in the inspirational concept of the castle.

The design focuses on the tower ring space, folio 107:01.

The tower design starts by fitting an octagon in the ring space, with the tower octagon diagonal lined up along a base octagon diagonal, folio 107:02.

The tower octagon is any generic octagon that is stretched (uniformly in all directions) to fit exactly in the ring space, see folio 107:03.