The Global Archicad Community

Stay informed. Get help. Share your knowledge.

Modeling and drafting in Archicad. (Example: How can I model a Roof soffit/fascia?)

Moderators: Karl Ottenstein, LaszloNagy, ejrolon, Barry Kelly, Gordana Radonic, nbalogh, mnguyen, gkmethy

Unfortunately if you want to see it as a skin with thickness in section, you will have to create a roof.

Otherwise you could try duplicating the stair, lowering it slightly, change the structure to plaster and then use Solid Element Operation to subtract the main stair from the duplicate - should work but I have actually tried it.
You will probably want to remove stringers, treads, etc. from the duplicate - leaving just the structure.