In the case of those Hilti fasteners, they require the concrete be cured to 2,000 psi minimum - so have the builder provide proof of that. Have him take a core sample and have it break tested, if it meets 2,000 psi, go for it, if not, wait until it does meet 2,000 psi at a break test.
ECJ:
That's what I was saying. The slab was poured in August of last year. I stopped the builder from framing the next day. He could produce no satisfactory docs then, and will not be able to now. So, the Hilti ICC-ES doc will give me the leverage I need. He cannot show that the slab had reached the necessary hardness by the following day.
Spin-spin-spin-spin . . . . .
Aaron
