I am installing a 1.5" plastic drain line which runs vertical and then runs down through a "p" trap. I need the vertical pipe to connect to the horizontal pipe (with a slight downward slope). What offers the most efficient flow of water (for washing machine), 2- 90 degree bends or 2- 45 degree bends w/a pipe in between? I would assume the 45s would be the best option, but how do I determine the proper length of pipe to cut to fit in between the 2- 45s considering that the vertical pipe is in a predetermined position?
I hope this makes sense.
I hope this makes sense.