We will be finishing our basement in the next 6 - 12 months and I have a question about shower drains. The basement has a bathroom roughed in, but there is no rough in for a shower, only a toilet, and what looks like 2 vanities (1 1/2 vented) that are about 2ft apart. My question is, can we install a shower drain without tearing up the floor? The ceiling is 7'10" and the floor will be tile. Can I build a stand for the shower and tie the drain into the 1 1/2 that is roughed in above the floor line as long as I keep the slope at 1/4" p/f or more? The drain line could then be hidden in the wall. If this cannot be done, then I'll need to remove the concrete and tie in. T.I.A.