REVIT Architecture 2010 – Curved Wall Tricks Extend a curved wall to the underside of a curved stair in seconds. Learn how to embed one curved wall into another curved wall and edit the profiles of the top or bottoms of those curved walls.   Free CADclips Click a lesson title to play or right click a lesson title and 'Save Target As' to download. Lesson 1: Modify the Top and Bottom Profile of a Curved Wall Lesson 2: Modify the Top and Bottom Profile of a Curved Wall with an Embedded Wall Lesson 3: Extend the Top of a Curved Wall to the Underside of a Curved Stair