Can you elaborate on the specific application? My first thought is that post installed anchors are typically used to fasten a structural member to structural concrete such as at a footing, not a thin mild slab-on-grade which is not usually assigned much structural function to begin with. There are common exceptions of course.
1. firstly the manufacturer's instructions should be followed. sometimes they require that the hole be drilled then blown or brushed for chemical anchors. there may be requirements for undercutting or a dozen other preparations.
2. some anchors have temperature restrictions for installation.
3. what jurisdiction are you in? some building codes superimpose additional requirements on post-installed anchors including inspection of the hole by an engineer.
4. what is the nature of the load. some anchors have restrictions related to dynamic loads or permanent tension loads.
5. verify your edge/end/spacing distances.
6. determine if the anchor loads presume installation in cracked or uncracked concrete?
7. does the jurisdiction require state product approval?
