Thanks guys,
I haven't received a sketch yet, but I do know that the building is divided up into two halves...one end is a 42ft wide x 56ft gambrel roof style, two story draft horse barn, which also has 14ft x 56ft lean-to additions attached to each side.
42 +14+14=70ft
The other end of the building is the 70ft x100ft free span, saltbox style roof, timberframe farm and mechanics/ maintenence shop.
70ft x 156ft total footprint.
He likes the look of old timber and is asking that it be made out of used barn material. I have built a 51ft Multiple Kingpost truss covered bridge, so I feel more comfotable with that sort of system. I also looked at some of the Guild's truss literature and found a couple of Queen/King truss combinations that would work for a shorter span. We are still in the early stages of planning, and I have a couple of alternatives/compromises to propose if needed.
Tim,
30-36ft Queen trusses with hanging support rods are very common in Wisconsin Dairy barns built between c.1890-1920. Let me know if you want to pick my brain on that one.
Rooster