You'll have an X and Y distance plus a Z height.  What's the problem?  Depending on how you look at it you have either one row and "?" columns or one column and "?" number of rows.  The "Z" will be the height from top of tread to top of tread.  If you can't do it that way then maybe create one stair tread/riser and copy it as many times as you need to.

You are talking the 3DARRAY command right?


Edited by John Connor - 13.Jul.2012 at 11:41

i was trying to create a spiral stair case and i was wondering if there was a way to do like a reg polar array command but have it (a 3d box) where it starts at elevation 0'-0" and end at elevation 7'-0" or something like that


i hope this explains it a little better

Dear Sir,
  We have need laboratory Autoclave Assembly drawing in 3d.
Plz do the needful.

Are you want money?

I guess you really didn't want that drawing bad enough to pay for it now did you?  Let me know how you do.  Post an image of your 3D autoclave when you're done.