So I've a pair of new handsome wrought-iron gates for the bottom of my (tarmac) drive. The gates each have a long thin "bolt" that is intended to go into a hole in the drive itself.
My initial feeling is that a couple of short lengths of metal tube set into concrete should hold them nicely. But, I'm concerned they'll soon fill with mud or earth or leaves and turn into a maintenance headache.
Any guidance? Should the tube be long (in which case I'll need a deep hole) or short (but this might fill up faster?) Would a bit of old copper tube I've got about the place do the job?