Hi everyone, I had cut and broken a section of our basement floor ( 4″ thick/no rebar ) to move some plumbing around for a new bathroom. As I was working we had a few good rainfalls and noticed, despite the fact that the house is built on clay and there is weeping tile all around the footing, a decent amount of water building up in puddles where i had dug out to place new drainage lines. I understand it’s quite normal to get some water running underneath the basement floor (had to pump some out in order to re-pour). I have since noticed a continuous crack develop along most of the 45′ length of the basement. Should i assume that the crack(s) is just stess releif from when i broke the slab ( this floor is 40 years old and showed no evidence of cracks )? Should i be concerned about water seepage through these cracks and into what will be a finished basement? I was hoping on getting away with not putting any sub floor down since head room is a concern ( we’re below 8′ ). Thanks for all your help and comments.