Removing old, uneven and broken up concrete floor from my 1,007 square foot NYC basement. House was built in 1901[](http://ift.tt/2xOQRQz am aware of the complications and i know i should be cautious(understandable) about how complicated this can be.I have taken the action to contact contractors but the prices I have been quoted have been dramatically different form each. I have not yet spoken to a structural engineer(will do soon). However, this job seems pretty straight forward.I do not want to dig below the level of my foundation footing. I plan to remove the old slab add 4" slab. I already have 7' head room without Sheetrock.Putting 2'' Self leveling concrete over the existing concrete is not a option.Friends helping me with labor(concrete extraction and excavation), already have a 20 yard concrete and dirt dumpster ready. Already have the 13 cubic yard(12.3 to be exact but i will order 13 to be safe) concrete delivery($108 per cubic yard) ready when I am at 3500 PSI.I have the line pump ready also. I have yet to find reliable installers and finishers. The total cost would be $3150(dumpster, cement and pump) after taxes. I have not calculated material list for Rebar, vapor barring, jack hammer rental, laser leveling and so fourth. I will pull permits if needed.Plumber will be removing pipes from underground and ruining it along the wall. Sub pump would be added along with perimeter drainage system. My main sewer line is in the ground. the only thing that's holding up the job is the cement work.I refuse to start any breaking of the floor until i know and have an idea of what needs to be done my self before i hire a contractor. I just don't want to be charge for any work that i don't need.Again, job seems pretty straight forward.Here is my concern, reinforcing the foundation and preventing the foundation from damaging. That where the Structural engineer comes in, correct?Can someone with experience tell me how this goes. If you have done this as A DIYer or have cement masonry background, please comment.Anyone with experienced information would be useful.Thanks via /r/DIY http://ift.tt/2A0Zbxe
