I'm currently finishing my basement. I'm putting down sleepers and then ply would over top as a subfloor.
I thought I could use a concrete nail gun to install the sleepers to the concrete; however, my concrete is old and very hard; thus, it is brittle. So the concrete just shatters. I'm having to drill pilot holes and then use concrete nails.
My question is, how deep are sewer mains running in the basement floor? I obviously don't want to drill through the sewer mains running to the street. Is there a standard?
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