Hello,

I need to build a rough half-staircase to exit from my basement to
grade. It will be in a corner of the basement, so one side will be up
against a concrete retaining wall. I understand how to build the
stringers and that anything with a face in contact with the concrete
should be rot resistant. But I'm wondering how to make the various
attachments:

Side wall stringer: directly to the concrete retaining wall? 3 3/4"
tapcons OK? How many?

At the top of the stringers: a ledger board on the concrete wall?
Joist hangers to attach each stringer to the ledge board?

Bottom of the stringers: directly to the concrete slab, or to a
furring strip on the floor? If directly, does this mean each stringer
needs to be rot resistant? How does one fasten the stringer here, in
either case? Toenailing into the furring strip?

Thanks,
Wayne

P.S. I imagine wanting to finish the stairway in the future if I every
finish the basement. Anything I need to plan now?