I'm building a swim raft for the kids at the lake. It will be 8'x8' made with a few 2x8"s and 3/4" plywood for the top, I have 4 x 30 gallon plastic drums that I will use for floatation.
Question, is there a way to calculate how much weight a 30 gallon drum will support in the water? I'd like to add the same amount of water to each barrel for some ballast, but I'm
unsure how much I can safely add.
Any comments, appreciated.