I've been building stairs a long time and
rarely will you run into a stair stringer that looks something like
this. This stair stringer is going to attach to a 4 x 8 landing beam
If you're looking for advanced techniques for stair building and you're
a framing carpenter, make sure that you understand how this type of
stair stringer attachment works. I know I didn't invent this, but I
haven't ever seen anyone do it before.
Split Level Stair Framing