Steve started by referencing our local codes and then by designing the stairs in AutoCAD, a design program he has at work. However there is a great stair design program that is free online and that I linked here. Be sure to account for the depth of your floor at the top and bottom of the stairs because code does not allow much variation in riser height between stairs.
I will try to explain all this the best I can but I am not a technical gal, am impatient when it comes to things like this, and darn it, was only in and out for most of the project. I snapped photos and took notes in my head when I could. FineHomeBuilding also has a very in-depth tutorial on framing stairs.
Because old houses are all whonky, be sure to check for how level and plumb things are after each cut as many adjustments may need to be made even though it is all the same when drawn out. Steve just used a basic old level and a plumb bob to do this. He clamped the stringers in place when he checked each time.
|Winchester Mystery House Stairs that lead to nowhere via|
And of course our main squeeze....
|A rare smile for the camera being 2 and all-must be all those m&ms he earned for using the potty today:)|
|starting the jump-excited|
|and we're bending to jump-Go!|