Any idea how to make a stair that can look like this image?

[Anonymous]

i am trying to make a butterfly stair in archicad 15 (like in the image below) and i have a problem with the line of travel ( it says..doesnt connect propertly)..any idea how to do it?

tnx in advance for any help

[TMA_80]

Hi oty_izo,

It should be possible but in three steps.