Parabola Stair

[BillyGrey]

Anyone out there using the stair tool to generate this form (see line on picture).
It takes a straight line and a tangent arc to achieve. This gives me the "not more than one boundary chain" error.

Otherwise, I think I may have to custom model the thing (and yes, the under-stair bathroom is not my idea of easy livin')

Thanks

[sbrown]

The trick is to NOT use the run tool. Sketch the stair how you want it in drafting lines, then use the boundary tool and the riser tool to create it.

[aggockel50321]

And this thread (http://forums.augi.com/showthread.php?t=12962&highlight=parabola) might help you in laying out the parabolic drafting lines that Scott discusses above...

[BillyGrey]

Ahhh, thanks to both of you old schoolers :)