When I moved into my house 37 yrs ago, there was a vent to the outside for a dryer and a 1.5" p-trap for the washer(pic #2). There have been a few washers & dryers during that time but all have used these connections. By that I mean the washer drain hose was placed directly into the 1.5" p-trap. I would like to put my washer & dryer into a separate room with the washer on the left and the dryer on the right as in the drawing(pic #1). I have access to run new hot and cold lines and a solid vent pipe for the dryer but the drain line has me confused. In moving things, the washer hose line will be too short to just drop into the p-trap, not that that would be the thing to do now that it will be behind a wall. It will probably be about a foot too short. As you might be able to see from the pictures, the soil line goes out through the wall at 53" above the basement floor due to having a septic system years ago. The top of the p-trap is 83" off the floor. What would be the best way to get the drain water from the washer into this p-trap? Can I run a 1.5" line under the ceiling on an angle to connect into the p-trap or is this going to cause other problems? Should I just get a longer hose for the washer and leave an access panel in the wall? Appreciate your thoughts.