OG,
You are helping me along...thank you for your patience.
Since I will be rebuilding the deck over this area and it will not be accessible to maintain, though I do have a pipe clean out port on one end, I want this drain to last and be trouble free.
I could not go too deep with the trench...
OG...what did you mean by, "but for a big installation and in trenches, it is almost impossible to get it right?" I have a sock on the pvc (which has holes on the lower third), will that clog or let sand through? Do you believe I would get better performance to remove the gravel and replace it...
The area under my deck (8'X50', disassembled) is sloped 8" over 8' away from the house and toward a drain (as pictured). I have a heavy plastic (30 mil) which will cover the area under the deck and terminate over the drain, so fines will not migrate into the drain or fabric. I have the drain...
