Architectural 2016: 
  
I am trying to build a U shape staircase that has two landings connecting the stairs. 
Example: 
walk up 5 stairs onto a landing, turn 90 degrees step up onto another landing, turn 90 degrees and walk up 6 stairs. 
  
Luckily I have a picture. 
  
Any help would be great. 
  
Thanks 
Stephen