I am running plumbing in my unfinished basement for a first floor remodel. I am having trouble getting my mind around how to make a 90 degree turn in the drain pipes (horizontal to horizontal) but where one pipe is above the other. So turning down and right. I sketched a crude diagram below. The blue line are the pipes in the ceiling, the others are along the wall. Is it simply a 45 into a wye? What goes on the left end (opposite of the stack? Just cap that off or a cleanout? Thanks
