We have a lot of oilfield pipe down here (or used to before the scrap wars) and we'd make both box and post out of sch 80 then set it into about a square yard of concrete. Front and back covers were usually 1/4 to 3/8 plate. It took a lot of energy to damage one so the yard gorillas would get a real workout tiring themselves out. Unfortunately, they usually took their rage out on the neighbors boxes.
|