use the shell tool.
- draw the shell in floor plan
- view in elevation
- select shell , click on arc, choose point on pop up , now shell is flat
- click and add the needed polygons and create your profile
- change shell thickness to suit
Done ! See attached Illustration for visual guidance
Carsten
www.asmtechbase.com
https://www.youtube.com/asmtechbase
AC 3 to 26 -Windows 7 - 24GB - 8core 4.4Ghz