measurement in a cold slab

[CCR]

That's a great question but I'm not so sure CSI would stick their neck out and have a spec for the same reason they will not specify an optimum concrete surface profile for optimum slab hydration. Reason being that what if a flooring failure occurs despite meeting their defined spec? Who's liable? Could really open up a Pandora's box. Besides, as I see it, service condition would be different for (i.e.) an epoxy coating for a dairy plant vs. an auto d!ealer service area.

If someone knows of a defined spec, I'd love to see it.