I have a question on adding a french drain around part of my basement that was re-inforced with vertical steel I-beams. The beams go into the basement floor next to the wall and touch the wall, thereby holding the wall up (long story, there was a long horizontal crack, anyway that's ok now).
I don't want to cut into the floor and weaken the foundations of the beams. But I might want to add a french drain, as on really wet days it does leak a little.
So I was thinking of adding a raised barrier, away from the wall an inch or two, all the way round, skirting the beams where they protrude out, and then drop down into a regular drain which exists around the corner.
Wondering what materials to use and to seal the stuff from coming out. Maybe a plastic barrier sealed in with cement, and then painted with waterproof paint inside on the side facing the wall?
Thanks for any ideas,