What do you mean by:

Corner cut off? Does the roof still cover this area, but it is 'exterior' space?

No posts in the floor area? Does that mean 24' clear span from wall to wall?


Initially - without knowing snow, wind, live loading - I picture 2 king post trusses along the hip lines. 1 truss can be 'complete' and flown in as such. The other fits into the sides of the first truss, tying through the king post. Or you can do 4 triangles that meet in the middle...

Or one could do 'drag on' beams, or maybe a boss pin and tension ring top plates...

from a building in montreal that i visited:



random images linked from the web
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large: