Stairwell to the basement
I have a 70' x 30' with cinderblock wall basement. With an 80' x 30' army barracks sitting on top of it. The basement was the original house and has a roof on it. I would like to incorporate the basement and the house together with the basement being the family room. How could i support the basement ceiling which is also the housefloor (there are no cracks in the basement wall) would it support the outside wall by itself or would i need to support the cinderblock wall of the basement to put in the stairwell? Space is also a consideration because the stairwell will only be 3' wide anyway.