I am putting French drains in my basement and I did one side already. When getting the one side done, the contractors found that there was a second floor poured on top of the old (he said people do that to stop water from leaking in). There was about 6” of gravel, and then a layer of concrete.
The second half of the basement is about 5” higher, and the contractors believe that side has THREE layers. My question is, is it completely out of the question to jack hammer away the entire third concrete floor? Even if it takes hours and hours and hours. I am willing. I just want opinions from others about things I may be overlooking. Thanks!!