I just bought a new house with an attached garage. there is no door between the house and the garage so I'm putting one in, but I will also need to put in steps in the garage. I haven't taken exact measurements but I'm sure I will only need two to three steps. Do I need to break up the existing concrete slab (garage floor) in front of the new doorway to pour the new steps? Can I just drill some holes through the existing slab (garage floor), add some rebar vertically and use that to "attach" the new steps to the existing garage floor slab?