Stairs and Site Modifiers

[jwlandscape]

Is there a way to convert stairs made with the stair tool into a site modifier that will reshape the site model?  I work on sloped sites often and I'm trying to figure out if there's a workflow that will allow me to create stairs that will behave as a site modifier. It seems like stairs in landscapes and models would be something that comes up a lot but there doesn't seem to be a whole lot in the knowledgebase that's helpful. 

 

I'm still learning how to be proficient with using site models and site modifiers and I can't seem to find any way to do this. 

Edited November 12 by jwlandscape

[Jonathan Pickup]

If you make the stair concrete, and then look at the underside of the stair, you can use the extract tool from the 3-D modelling tool set to extract the surface of the stair, if you create this as a planar object, then you can use the create object from shapes command to convert this to a site modifier.

[Poot]

Alternative to the quick method suggested by @Jonathan Pickup, you  can either draw a 3d poly which you then convert to a site modifier. If you use the same stairs often, you can group these, and even create them as a symbol for quick use that avoids redrawing the poly every time.

[jwlandscape]

Excellent advice! Thanks for the quick answers!