Answer by
primatefreak (1616)
This would depend on what type of drain tile you are using. If it is Flexible HDPE (high density polyethylene) then it doesn't matter. There are slotted holes all around the drain tile, there is no wrong or right way. If using Rigid PVC, place the holes in a 5 o'clock and 7 o'clock position.Water will drain from both sides.