This mis done all the time. In my case, I installed a Luxe linear drain in the concrete floor in one of my showers. This was a remodel of an existing space where the drain plumbing was already roughed in and there was a flat concrete floor that the shower bed would be laid on. I cut a 2X6 to be slightly wider and longer than the Luxe drain, wrapped it in visqueen, and positioned it on the existing floor; then the shower bed was poured with the drain form in place. The next day I pulled the form out and connected the Luxe drain to the drain pipe. If I recall correctly, as an insurance policy, I used some dabs of silicone sealant underneath to hold the drain in place during tiling, but that probably wasn't necessary.

Luxe make quality drains and they have good tech support, so you could always give them a call for other suggestions for your install.

Just to clarify - this sounds like a new build, not a remodel? And you won't be tiling the shower, rather going with a polished concrete?

Correct. New construction and not tile.

Warren-

In new construction you can still follow the general process I did in my remodel. Just wait until the floors are finished and then replace the form with the Luxe drain. It may take some fiddling around to figure out the correct height for the form: just make sure it is set deep enough that you have some leeway when the drain is being placed. You can always raise the drain height by filling in the trough with some thinset or concrete, but lowering it would be much tougher.

Thanks Kudzu9. Understood, but what did you do regarding the drain base, clamping ring, and barrel? Assuming you just assembled them and poured over, how did you protect the drain?

Yes, that's what I did. It's been a couple of years but I recall that I also taped a thin wrap of foam around the outside of the drain pipe assembly so that there was a little cushioned clearance between the concrete and the piping, and I just wrapped the upper end of the drain with a piece of visqueen that I taped in place to form a cap and cut away with a razor afterwards.. With the wooden form in place, nothing got in.