There is an AutoLISP program called prof.lsp made for drawing 2D and 3D (steel) profiles in AutoCAD. It is part of a package "UP" but you may want to use it separate.
On http://neonescio.viaisn.org/~wiebe/me/prof/ you'll find some documentation.
Installing:
Copy files at http://neonescio.viaisn.org/~wiebe/me/bin/ to a local directory
- Add this directory to the AutoCAD search path (tools - options - files tab - search path - add directory)
You may want to copy http://neonescio.viaisn.org/~wiebe/me/prof/ local or on paper
Usage:
Just run it from the command line: prof <enter>