it doesnt matter what floor you are on it matters what the building make up is, my trade is a building surveyor a normal single beam made up of concrete and steel reinforcing rods used for beam and block flooring in apartments are capable of holding 3.5 tonnes each and normally 3 per meter run! so for every meter thats 10 tonns minus weight of blocks and other materials should be fine with anything up to a couple of tonnes per m2 thats a lot of water, but if timber its hard to say without drawings and a propoer makeup of the building, contact a structural engineer or architect who made drawings of construction is best,
i will help if possible
