I'm looking to hang an aerial yoga hammock in our garage from 2 attachment points. I'm based in Australia which might change some of my measurements/ratings so sorry in advance!
I can use a manhole to access one third of the ceiling. The rest of the ceiling is under our second level, blocked by an i-beam with the brick wall on it (flanges are around 7mm thick).
The part I can access has MGP10 rated joists around 35x90mm in size.
So my question is: can eye hooks be used directly in the joists/flange as long as they are correctly rated and supported on top with a washer/plate? Or would spanning a large beam across multiple joists then drilling into that (or another solution) be the preferred method here?
It's not a passive hammock, so due to jumps/drops of a few feet most guides recommend around 800kg+ bearing capacity to avoid surprises.
Hiring a specialist is another option but most guides recommend finding a certified rigger which doesn't seem to be getting many matches around here (maybe we call them something else).
Photo inside roof: https://imgur.com/MwCyOE4
Some rigging ideas: https://www.aerialyogaonline.com/rigging-residential/