I've seen different recommendations online so I'm looking for some clarification. I'm building a 4' tall chain link fence.
1) Do the terminal and line posts need 4" of base gravel in the post holes? I understand the need to do this for wood posts so they don't rot, but I don't know the reasoning for the galvanized steel posts. Some sources say you need the gravel.
2) Do the line posts need cement? I know the terminal posts need it, and most sources state that the line posts should have it too, but I've seen it both ways.
3) The fence I'm installing is replacing an old rotted wood fence. The previous owner had soil against the wood fence in some spots, which created a 6" drop from one side of the fence, to the other. Should I flatten this area, or should I just install the fence in the same spot as the old one? See drawing below for clarification.