I dont know that they that ceiling is reinforced concrete, but rather a finish. There certainly could be framing behind it. Even it was a slab, the anchor itself wouldnt be that much of a load. Lets say those little concrete panels are 8 ft long, 2 feet wide, and 4 inches thick. Thats 50 psf + 100 psf live load. thats 2400 lbs per panel. Assuming each cable carries a quarter of the panel weight, and theres two panels per cable. You're looking at a service load of about 1200 lbs. Thats not that much for an anchor in pure tensions, provided its installed correctly. As for the slab above, I'd almost design a slab for 200 psf live load, which with a composite deck, or post tension beam/slab system I dont think would be too difficult.
