Here are today's progress pictures, all of the cross beams are in place and most of the diagonal braces. this is made in 2 halves which are bolted together at the double center beams. Build time 21.5 hours.
I have never put a floor in a round house but it shouldn't be to hard but to long to describe here. feel free to give me a call during a week day. Phone number on my Model Building Services web site. 
