Shops, buildings and bins

[Nebrfarmr]

I can speak from experience, a tordado will take anything it wants to.   The biggest thing in my opinion, is the strength of the doors, and that they are shut, when the tornado hits. and I think roof vents help.  The sheds I have seen taken by tornadoes, were pulled up, from wind blowing into them, rather than pushed over.  This was true, for both wood and steel.

Steel I think hold up to straight winds better, though, and steel does not warp, and cause the doors to sag.