Zootal wrote:

I set 8 posts in concrete yesterday. Today, I look at them and see half
of them have developed cracks in the concrete, usually just one crack
radiating from the post to the end of the concrete, looking from the
top. Should I worry about this? Is this normal, or an indication that I
didn't mix the concrete right?

It doesn't really matter much. The concrete is just there to fill up the
hole you dug to bury the post. It adds a little ballast, but that's just a
plus. Jever notice that the utility poles are now put in with expanding
foam?

--
Steve Bell
New Life Home Improvement
Arlington, TX