Removing Portion of a Stair Landing

[keheidem]

is it possible to remove a portion of a stair landing after it has been created?

I have a metal pan stair with a landing. The landing has a frame around three sides. one side connects to a floor. I would like to remove the frame where the stair meets the floor. I have attached a few images to hopefully better illustrate what i am trying to do.

[barthbradley]

Sure you can remove it. Some math is involved.  Might be easier to convert to sketch-based if it is not already.  Post the file.  

[ToanDN]

You could just delete the landing support where the landing hits the floor, then edit the landing sketch and align the edge. But in reality, you would still need a support (that does not sticking up above the landing) at that end to attach the stair to the edge of slab.