I have a curved staircase going down to my basement. I would like to frame and drywall the ceiling going down the stairwell. What is the easiest way to do this as the inside radius and slope are different than the outside radius and slope?

 

Hi Larry, Welcome to the forums.

Honestly my man, you just gotta sit down & do the math. Every rm is different. Basically you get your 4' mark & figure your angle & distance measurements from it. It's maybe not something for a DIYer, unless you've got a lot of patience & maybe a couple or three extra sheets for the job. Try to keep recess joints together & likewise for cut ends. Remember, drywall tape is 2" long & 500" wide. No seriously, keep cracks between joints to a minimum, less than 1/4" will tape easily.

Good luck & post back if we can be of more help.