I was in the grain business for 28 years, with a major corporation. Been out of the business for 20 years. But I recall these are important factors, thickness of the steel, grade of bolts used to fasten the rings together, spacing of the bolts, and proper torquing of the bolts. Also the bottom several rings are thicker metal. My experience was mostly with bins roughly 40,000-200,000 bushels. And these bins were filled and emptied multiple times per year, which is a stress on them. We used mostly GSI bins. Good luck.
