I am getting ready to pour an 8 inch stemwall perimeter foundation around my house in order to bump out the existing walls to the new foundation and then add a second story. The existing foundation will not support a second floor.
Anyway part of the foundation will go through the existing garage, which has a 4 inch slab. I am going to saw an approx 18 in wide path out the slab and pour the foundation/stemwall through the garage.
The building department originally wanted to have the garage foundation/stemwall and slab juncture engineered but they said if I came up with a way of tying it all together they would take a look at it and I wouldn't have to hire an engineer.
The footing and stemwall will built according to what the city handout/code. What I need is the placement of the rebar in the original slab. I was figuring #4, epoxied into drilled holes. But what spacing? and do I bend the pieces down and wire them to the stemwall rebar. Or do I place the rebar in holes opposite each side of the cut and then wire them together.
Thanks in advance.