Spiral Helix Stair

[shaunv68276]

I have managed to pull the helix stair off. but I now need to clean it up. There is a 380mm wide baluster wall running all the way up from Level 1 too 1200 above the stair. I used a 380mm wide stringer on either side. I now need to set a helix spiral wall from the ground up, and somehow attach it to the stair. Any suggestions?

[Henry D]

Just an idea- Would it work to put a flat roof down as a floor and select the walls and then attach/ bottom?