basement tub/shower drain with radiant heat
if you do not have tub yet you could buy one that drain shoe fits between floor and tub the better fiberglass tubs that have 3/4 osb fiber glassed to bottom of tub then have four support feet or what is called above floor rough in tub i know american standard offers them in several of there tubs
be careful my advice only comes from general knowledge i know about the 4 rules it takes to plumb and they are
1 poop needs to flow down hill. 2 hot on left cold on right
3 i get a pay check on Mondays 4 do not chew finger nails at or after work.