Hi
I am currently trying to draw up a plan and section through a stone spiral stair case, and struggling to get my head around the section of the spiral stair case, If anyone can give me a web page that could help with this or have any tips on drawing this up.
 
 

Draw it in 3D then extract the view (a section) you need using the SectionPlane command.

Hello, if you type "stair" in the CADblocs library here in CADforum you will find examples of spiral stairs.