french drainage pipe installation Home › Forums › Archives › Old Bulletin Board Archives › french drainage pipe installation This topic has 0 replies, 1 voice, and was last updated 22 years ago by JackBeardwood. Viewing 0 reply threads Author Posts 18 Feb 1999 at 7:16 am #280717 JackBeardwood How do I install it. How deep, layers of gravel, sand, earth, in what order or what type of substance? Thanks, I really need the information! Author Posts Viewing 0 reply threads The forum ‘Old Bulletin Board Archives’ is closed to new topics and replies.