Planning to build a staircase from the balcony to the patio on the ground floor. I think a steel spiral staircase is too expensive, so I'm considering building a straight staircase out of wood. I've sketched out a couple of images. But maybe you can see what I have in mind. First, cut an opening in the balcony railing, where a landing will be built that connects to the staircase. Has anyone done something similar and can offer tips? Dimensions, etc. I've seen ready-made stringers, but they are up to seven steps. The level difference is 3 meters, so I estimate it will require 15-16 steps. I imagine there will also be a need for support halfway up the staircase.