I'm putting in a new basement entrance. The plan is to pour a 5' x 10' pad and foundation with block walls. The pad will be 7' below grade and 6" thick with wire reinforcing. The stair will be treated wood. Feel free to comment on any of the above, but, the 2 questions are ...1. Does the pad foundation need to be attached to the existing basement floor/foundation? If so, how is that done? And 2. How is the concrete block attached to the existing poured foundation wall?