A ladder is a path that has steps that connect one floor with the floor above it and has a function as a path to go up and down between the level floors.
Planned layout of stairs
• Placement or location of a separate staircase is easy to see and search for people, not close to other rooms so as not to interfere with other residents' activities.
• The stairs also have a function as an emergency road, planned close to the exit, in anticipation of a fire disaster, earthquake collapse and others.
Hopefully this application can be a good reference for ideas and models with a hair style that suits your choice.