See this topic at the Zoogdesign Revit forums:
http://www.zoogdesign.com/forums/phpBB2/viewtopic.php?t=3717
"Damir" wrote in message news:409cac6d_3@newsprd01...
> How to create arc wall with sloped top (spiral). I believe it shold be
> possible, as it is possible to make spiral railing or ramp.
> Thanks in advance.
>
> Damir
>
>