I'm in the process of designing a canopy bed with a few kinky features. Most of them aren't too problematic, but I lack the knowledge about structure and weight support to calculate this:
I want a hook above the centre of the platform (~1,60x2,00 metres) that supports an adult suspended from it with ropes. We will assume that I cannot just place this hook in the ceiling (which is very likely to be true). We will also assume that the individuals suspended won't be heavier than say about 80 kilograms, although they might swing on the rope for a bit, which may cause additional stress.
There will be solid bed posts at each corner of the bed, however I need to know what "roof" construction will allow me to support this kind of weight above the centre of the platform, both in terms of how and where to place the beams and approximate minimum requirements for the strength and type of the wood where it matters. I have some flexibility in the height of the posts, but not too much as the platform itself will be set fairly high up.