WILLY TINKLER
New Member
I am adding new bathroom in a building with concrete slab. cinder block walls and need advice on how deep to bury the 4" drain pipe coming out the back of the 8" thick foundation section footing the blocks rest on. The footings look over 30 inches deep..might be more but only went down 30". What is the minimum depth I can lay the pipe inside of the bathroom so I can know where to punch a hole in the footing to get it outside. The building runs a span of about 60 feet and the city main sewer is maybe another 20 feet away. I think the city sewer main is only 4 or 5 feet deep.