I built a home theater in my basement with tiered seating for 3 rows
of seats, each row rising 6 inches. The first row of seats is on the
concrete, the second row on a plywood platform 6 inches up, the last
row on a plywood platform 12 inches up. I am now ready for the
carpeting. It seems that the installer will have an easy time
installing the carpet onto the platforms as they are plywood and they
can nail on the standard tack strips and just stretch out the
carpet...

My question is how will they install the carpet on the concrete? I
have hot water heat tubing imbedded in the concrete slab, so I dont
want them just shooting nails in there just for tack strips and risk a
puncture. Also the front area by the TV screen is radiused so tack
strips wont bend those corners anyway. Will the installers simply do
a glue down for the concrete area then? Or do they have some way of
gluing the tack strips? If they do a full glue down, how do they
handle padding and vapor barrier?

Thanks, I am really in the dark about carpeting installs, this is the
first home I've ever owned that had even a single room of carpeting in
it, (Im a hardwood kinda guy, but carpeting will work better
acoustically in the theater).

I hope to post some photos in a month when completed.

Thanks