I was the guy who made the press pit. It was actually super cheap. I had a concrete floor that was about 2-3 inches thick so I just broke that with a sledge. Dug the pit much larger than needed and poured a concrete base in the hole. I then stacked masonry blocks to form the sides. I back filled the area on the outside with dirt and concrete. I then topped the surface with a layer of concrete. I'll try to find the pictures- much easier to see than explain. I finally sucked it up and rented some warehouse space and opened a gym/lifting club. the pit will now serve as a sump pump hole it needed. My original plan was to dig out a space large enough to fit a platform for clean+jerks and snatched but if I ever tried to sell the house with a pit that large they would wonder what the hell was happening in that basement... it puts the lotion on its skin...