Gothic Arch Barn Hey engineers!

Load bearing is excellent... especially when sheathed as shown in that picture. It's like the keel of a boat, upside down, which is exactly what was intended in those days when it was developed.

You can build a form for making the trusses. If you can find boards that long, they might bend without steaming. The blocks between the boards in the truss should be through bolted, or fastened with two Tre-Lock lags, so they cannot slip at all.

It doesn't need collar ties. The one shown is just used during construction. I'd add more stringers (longitudinal members inside the trusses).
 
Not sure it will be a cheap way to build a barn. If it was cheaper you would see many more like it. Unique and doable yes cheap no
 
As Mac said, load bearing is excellent. The same design concept held up stone cathedrals all over Europe throughout the late Middle Ages.
Can't comment on cost effectiveness, but load bearing should be no issue.
 
Sheathing it with metal, why not just buy a quonset hut?

For a small storage barn, having high load bearing capacity is not generally an important factor.
 
I looked into building one years ago. As I recall, some of the midwestern state ag colleges have Ferree plans available.

Unless you skin the inside with wood, I don’t think that typical metal roofing material on the outside will provide the shear strength needed to prevent failure.

Here is a link to some plans. Most gothic roof barns were used for dairy needs in high snow load locations such as Iowa and Wisconsin. The upper floor housed the hay for the winter.

 
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For a barn as narrow as the one pictured in the OP, you don't need roof trusses, only rafters. If they are wide enough, you don't need collar ties.

We used to make stitch & glue boats with laminated curved beams. I think it would be more fun to do the gothic arch. But to build a mold and make all the beams, laminated or bent, is almost as costly as buying trusses.
 
If you’re building it yourself and take labor out of the equation just price material both ways and see what it works out to. If you’re hiring someone to build it I would stay with the typical post and beam or “pole barn” construction common around here. No doubt post and beam will be cheaper if you’re paying someone to build it.
 
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