I am building a 9-stall round house and I remember seeing a small article in a RR magazine (I think MRR but could be wrong) about the steam, electric and air lines in a round house or engine house.
The article was not very old but so far I have not been able to find it using the conventual search methods. If anyone remembers it I would appreciate it.
Doc
Did you check the index of magazines, under "Resources" at the top of the page? I found several possibilities by searching "roundhouse".
Wayne