I'm investigating the possibility of hanging a pull-up bar/ rock-climbing training board from the concrete ceiling in my apartment. The slab is 180mm (7inches) thick and the (static) weight which I would need to support would be 70-90kg (155-200lb). My ceiling is also my neighbour's floor, the building is from 1958... I've read similar questions and responses here and the the issue seems to be tensile strength of the concrete. Originally I planned to use two expanding bolts and an epoxy to help secure them but now I'm not sure.
My question is: would adhering fibreglass sheets to the ceiling where I place the bolts help to improve the ceiling's tensile strength and reduce the chance of the concrete cracking/failing?
If I did this I imagine I would first drill the holes for the bolts, then glue fibreglass sheeting over the whole area, and then pierce the sheet just over the holes in order to place the bolts. Is this a terrible idea? A free-standing structure is not an option - it's ceiling or nothing.
EDIT: Seems like the general consensus on the fibreglass is it wouldn't help. Can anyone suggest an alternative method of safely anchoring the load to the ceiling if money was no object and I wanted to seriously over-engineer this setup? Distributing the load over a wider surface with 2x4 and/or marine ply or similiar and using that as an anchor etc?