Seems like a simple question, but I have been searching for a while. Everything I find is about the depth of the hole for the concrete, not the depth of the post.
I want to know how far a post must go into a concrete hole. The concrete is well set, but has some muck in it. I need to know how deep does the post go, so that I know how much muck to clear.
Posts are wood. Post/hole width varies 2→3 inches (don't ask). Fence height will be about 4 feet.
So how much post needs to be in the concrete, so that the concrete can hold the post?