How to draw a curved baseboard on a circular wall......

[Anonymous]

How to draw a curved baseboard on a circular wall & have that base ascend??

I'm tring to draw a stair skirt/baseboard..i.e the trim that hugs the wall between the stair tread and the wall (See pic)

It's a circular wall and the stairs are going upward.

So I need to create a trim object that will hug the wall and ascend at the same time while keeping it's overall height consistent of about 12" tall.

The object will be a function of the rise of the stairs and the diameter of the circular stairs which are easy to to determine, I just can't figure out how to make the object..it kind of like a helix.

Anyone else tried to do this? Any success? If so, how do I pull this off?

As always, thank you

[Anonymous]

vincon2,
Olivier Dentan has made an object that will serve your
purpose and he has posted it here.
http://archicad-talk.graphisoft.com/viewtopic.php?p=43871#43871
The path can be made circular and the profile can be set to rectangular.
Peter Devlin