Stair Design (old)

I’m trying to design some stairs. They are from the basement to the cellar. You enter on the side and it spirrals to the right 90 degrees then follows the wall down. Once it reaches the cellar floor it spirals to the right again 45 degrees.
Below is a diagram of it. The cool thing about [...]

Old Stairs

We have these old rickety stairs in the show house. They are good craftsmanship but have had to endure a hundred years of big Italian boys bouncing up and down them. And they are old, old and tired.
We need to keep them, though, because the space is too steep and windy to be accepted [...]