Our company recently finished a large custom Victorian.
The crowning touch of the project was a pair of round,
two-story towers. It was probably the most difficult
project I've ever worked on, but in the end it came out well
and the owners are very happy with their new home. In this
article I'll describe some of the trickier aspects of laying out and
framing a round structure with a conical roof.
The first order of business was to locate the center point of
the 12-foot-diameter circle for each tower. We used this center
point throughout the project, dropping a plumb bob to
transfer it upward through successive stories.