New answers tagged french-drain
1, 2, 4 or the variant of 4 that is a raised perforated pipe; or the variant of 1 & 4 that is cutting a hole for a large filter-basket below the current floor level - but you probably don't need to "clean it every time it rains" - in all liklihood, checking it once a week or so and cleaning it as needed will suffice, with a possible need to check more in ...
I believe it will fill in. My house had a 4" PVC pipe from the foundation to the septic tank, about 10 to 15 feet away. Apparently, a plumber was out probing for the pipe with a steel rod (standard tool for this), and pierced the pipe without realizing it. The pipe eventually filled in, and I had a whole lot of digging to do to fix it.
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