Indoor stairs building method

I was asked in another post to share my building method with 2x2 hab modules, indoor stairs, and rounded corners. I couldn't add images in a comment without hosting them elsewhere, so here's a new post to answer that.

1. An outside shot of my main base, north of the desert. You can see the three 2x2 modules stacked up, with a stairs right in front. The rounded corner is on the far end of the stairs.

2. I went to a plateau on the south side of the crater to build new modules to try to explain this build better. I built one 2x2, then had to move around a bit to get the stairs to place correctly. You need the arrows to point upward from the first module. Where the arrows come out is where the second module goes.

3. Place the second module directly above the first. The stairs will exit into it on the inside.

4. The rounded module goes on the stairs, not on the 2x2. This gives the next set of stairs something to anchor onto.

5. The second set of stairs, to go from the second floor to the third. I took the screenshot when the stairs were still pointing the wrong direction. The arrows need to point upward, away from the rounded corner (not towards it like in the image).

6. This is what you see when you stand in the rounded corner on the second floor, with stairs going up to the third on your left and down to the first on your right.

Note that all the building takes place **outside** the modules. It's nearly impossible to get it right while inside. Build foundation block scaffolding if needed to get to the right height. After building as high as I want/need, I add a ton of windows to the stairs, along with railings, walls, and windows where the stairs meet the modules. Under the stairs is a great place for mid-tier heaters or vegetation, too.