I stick built my small shop - with clear span prefab trusses. Its 26 wide.
Truss company can build any width of truss you need. Consider partial ceiling area with scissor trusses for more headroom and partial ceiling area with attic trusses for storage. That way you do not need to elevate the building - scissor trusses can provide higher ceiling heights.
Could have gone wider, but nosy neighbor up the road - and having nothing to do with adjacent landowner was watching the setback, that in time became a non-issue as I acquired more land along that property line from the owner. We had a handshake agreement when I built the building that it was ok to move 5 feet further into the setback. But nosy neighbor threatened to tell the Town.
26 is not wide enough. 28 is better
Last edited by tom moore; 10/17/2019 1:48 PM.