Quote:
Originally Posted by pecker88
everything I've read says to have the top of the concrete slightly below grade when setting chain link fence posts; prevents frost heaving. In the above drawing, the concrete footer is 4" below grade. I will also put bolts through the posts prior to setting them in concrete to prevent them from pulling up after the concrete sets.
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I was thinking more on the lines of a catastrophic event such as the collapse of the structure.
This way you could start over without having a bunch of pipe or what ever stuck in concrete you couldn't do anything with.
To prevent frost heave pour the footings down below the frost line.
Worth