For many years, agricultural bldgs. and industrial bldgs., on their own properties were pretty much exempted from the bldg. codes in many locales. It was assumed that they did their own engineering for themselves and cared about their own assets, few people (the public) were involved, they cared enough not to endanger their own operations, they were self- responsible and self-insured, etc. As long as the last barn, warehouse, bldg. was still standing and performing o.k., they did the next one the same way, the old ‘has withstood the test of time’ thing. It’s probably actually a fairly stable storage system as long as every barrel or row or level is placed properly, and as long as the plank dividers are placed properly, witness the few failures they have had, or they would have change their ways. But, if any of the above is not done properly, or something happens to touch it laterally, with a feather, you can get what we see here. Let today’s code writers (LRFD, IBC and all) get their hands on this and you probably couldn’t get a barrel into place through all the bracing and connections.
I’ll bet the whole thing was perpetrated by the downstream folks, who hoped for significantly more spillage than occurred into the adjacent stream. They were planning on selling bourbon-n-water fresh out of the creek at their summer activities this year.