Re: Ceiling Rib Strength
When you pull the wiring chase from above the windows, there are a bunch of bolts around 1|2 inch. They run horizontally, and are located in the strongest spot on the inside of the roof, right where the strait sides meet the curved top. I would use them as your anchor points.
I would use formed steel, riveted together for your bed frame if you can. It will be much lighter, and stronger than wood. Formed steel is sheered and bent using a brake. Same or more strength than chanal and angle iron you can buy, with only 25% to 50% of the weight. One other member built all his inside walls, counters, cupboards, ect this way.
"Don't argue with stupid people. They will just drag you down to their level, and beat you up with experience."
Patently waiting for the apocalypses to level the playing field in this physiological game of life commonly known as Civilization