Not a lot of time to write. This is the floor of a grain storage barn/shed we have been repairing. This is a very large building with four of these stalls 60 or more feet deep. Each will be filled with grain eight feet high, Giant fans/blowers force air through the floor and up thru the grain to dry it. The grates get damaged by the heavy equipment used to fill and empty them. We removed the damaged ones hammered them back into shape and used tape to block any holes. Hard work but very rewarding. AND I no longer want to be a blacksmith.