[QUOTE=cherham;7719946]
We had an F1 Tornado hit us hard here in Ontario 2 months ago. We had a 72 x 140 foot Cover-All riding arena. Fabric roof, steel trusses. Our arena has withstood enormous snow loads, heavy rain and severe winds. Unfortunately a tornado is a bit more then most structures could handle and although our arena put up a strong battle it eventually buckled down. Sadly two riding arenas on either side of our farm built with traditional pole and steel sided construction were completely blown away…I mean just the dirt standing where they once stood. A horse and rider would have survived in my Cover-All even folded down as it was as it remained solid to its foundation blocks. If someone or a horse had been in the neighbouring arenas they would have surely died when the tornado hit. Something to think about.[/QUOTE]
I think you were lucky, that’s all.
Tornadoes tend to do that, hit one structure and blow it completely away and one ten feet away is not touched.
We had a tornado hit here and it took the cap off the chimney in the house and completely demolished two different cattle sheds and took just the middle 30’ off another, not touching any other part of it.
When those fabric structures first came to be, in some ag forums the comment was, if you drove around Iowa, you could see the skeletons of those all over, they just didn’t last long.
Today?
I am sure they have better fabrics and engineering, but even the best fabric is guaranteed for 25 years of use and you then have to replace it.
We have all metal barns built in 1947 still standing like new and expect they will be there for much longer.
When we were going to build our barn, we checked on fabric covered ones.
One company even offered to make us their regional dealer and we could buy one at dealer’s discount.
Even with that, it was as expensive as an all metal one and we didn’t see it was worth it, figuring resale value would be much less on the fabric covered arena.
Now, when you compare your figures, be sure they are apples to apples, because some metal and many fabric structures are quoted without any ground work or foundation.
Be sure that is included on the bid, or check who locally will do the dirt and concrete work and for how much.
A fabric structure may just be right for what you want, just be sure you have considered all when comparing them, to be sure what is best for you.