I understude the posts were to support a chicken shelter, not support wire tention?
If I'd have known this would get this many responses I'd have been more detailed in my original post. All I really wanted to know was if the concrete would set, probably shouldn't have mentioned the chicken run at all. You are correct in that these posts won't see any wire tension. They are part of a hare-brained idea I have to try to preserve/restore my old barn, and they happen to be inside the chicken run that I am building at the same time. If all goes to plan they only need to last a few years. I do appreciate all the helpful responses.
