Note French drain trenches install fabric on all four sides, but septic leach fields and drywell pits DO NOT install geotextile fabric … You’re not going to keep clay or dirt out of your rock, and to choose a monofilament woven fabric is chasing an ideal that will result more quickly in a plugged or slow drain... not the pipe, but the fabric. It only takes a minute to sign up. I'm a bit late, but thanks for coming back and giving us your experience. I close the fabric in a double layer at the top (if possible). He has worked thousands of projects successfully removing water from properties. I did a lot of research on french drains before I hired a landscaper to put one in a month ago. To learn more, see our tips on writing great answers. Actually, you’re the customer, they’re not willing to do it, hire somebody else. I’ve chosen to keep my stone about 4” below the surface. What is a proper way to support/suspend cat6 cable in a drop ceiling? Organic topsoil is very permeable at first, and allows the replaced sod to dig deeper roots. If it is allowed to pool on the top of the enclosed drain, it will slow but not stop the transfer of water. The layer also allows for sprinkler lines to cross the trench and the cable company not to screw things up (although we all know they will somehow). Where the rain bounced off the bare soil or clay piles next to the unfinished (but covered) trench there were no pools... just a peppering of soil. Wordfence is a security plugin installed on over 3 million WordPress sites. It can also be used for wrapping a perforated pipe, erosion protection, separation of a road sub-base and base course, and combined with three-dimensional structures to create prefabricated drains. In fact, I forgot that it was going through the fabric it was so strong, let alone through a pool of clay. I cut the sod at 2.5” and with the 2” of topsoil that amounts to 4.5” into a 4” slot, meaning a hump. One negative about a modern French drain that has stone all the way to the top... it can starve the grass after a couple weeks of no rain. Can I include my published short story as a chapter to my new book? Is a French drain the answer? And there was absolutely no pooling of water on the grassy surface anywhere... the owner had chronic problems of standing water and areas that were washed out. The clay will get through the fabric, but not a great deal. If you’ve ever seen a fight between clay and water, the water finds its way. During a major downpour just today (with tornado warnings and hail even), there was a small amount of clay and topsoil pooling in areas of major runoff. Who is the "young student" André Weil is referring to in his letter from the prison? Active 1 month ago. Am I going to be handicapped for attempting to study theory with a monophonic instrument?