Don't know if this will work but I'll try.
http://www.davisframe.com/Images/Product/lg/Saw%20Mill-GR.jpgIf you can see this picture it is VERY close to what I have talked about. Note the large span between the roof joists and the large span of the purlins with the "subfloor" boards going up the roof slope. It seems like this is possible based on my original concept but the roof pitch in the piture is obviously much greater than mine would be and I do not know how thick his roof material is.
Thoughts?
