How do you create an amphiteatre stair?

[talismansa]

Hi everyone,
I'm trying to create an amphitheatre in revit 2009, but when I use the stair tool, and using the riser button to click the arc lines I've created, the stairs come out very strange. I've attached a screenshot of what happens.

Is this how you're suppose to make amphitheatres or is there another way?

Also how do you make a wall that follows the elevation profile of the stair?

[ws]

Green lines are normally boundaries and I may be wrong but it looks in your screenshot that they are being used for steps?

I threw together a fairly rubbish set of curved steps in a few minutes using a solid stair (see attached).

I just made a standard stair and then edited the risers and boundaries to make the required shape.


The wall under I would make a section parallel to the wall and then viewing the wall in that section, edit the profile to follow the underside of the steps.