I bought this pier from AlexN on the Ice in Space forums. It is very heavy and I could only move it around using a fridge trolley. It sat in the back yard for quite a while as I figured out where to dig the footing for it. I took almost 3 months to dig the hole and have no photos but it is 800mm square and 900mm deep with 100mm of gravel in the bottom as well as a few toads. I used no steel in this footing. I bolted the pier down with self-tapping concrete bolts, 120mm long.