Our house was manufactured by Deltec Homes. It consists of 18 sides (an octadecagon) and a self-supporting truss roof system. This is the house in the spring of 2011, after we had moved in. The house was delivered in two semi-trailers, and a five-person crew erected it in six days.
The model below is at the Deltec factory, and illustrates the design and constuction of the house. This model sits on pilings, but ours has a full walk-out basement.
This shows how the roof is constructed. The trusses are bound together at the center with massive steel rings. The roof is self-supporting, so no center post intrudes on the living space, and there are no load-bearing interior walls.
