I am in the preplanning stages of building a round ear corn crib. I don't have the means or capability to buy a used and and move it. I do have a round concrete pad that used to have a grain bin on it back in the 50's or 60's. it has some weather cracks in it. Can I still put one up on it or would i have to have it repoured? My next question would be what means would the panels be held together? Any direction (how to do it) would be great.