Thank you for the info. I must confirm the house plans but I believe the suspended garage floor slab is 6" thick. The corrugated metal sheet underneath appears to be cover. It is corroding badly at the end closest to the garage door above but spots farther back indicates to me seepage through...
I am working on repair of a 25+ year old suspended garage floor with advanced cracking in x -y planes as well as significant micro cracks. The cause is advancing corrosion of the internal rebar and wire mesh (builder failed to install 3" grade to door called for in plans to run off of snow /...
