Picture posting is enabled for all :)
If you're using timber posts, make sure it's been treated. when I took on my plot, there was a metal gate in place, with wooden posts which were well eaten away at ground level. I replaced it after a couple of years. It precisely fitted the description of a gate which was put in place at the end of the 1940's, and I found a reference from a few years earlier to it 'still being there'. So it had been there for about fifty years. I assume it had been well and truly treated with creosote.