This is where I cut for section to work on.
I want to show back to back position of private circulation (escalator) and
public circulation (staircase and stand), stop floor of escalator in cross section.
In plan, circulation at each level (this might change since escalators don't stop at every floor so most of flat will be split level.)
configuration of unit for a flat, type and characteristic feature according to location and how one connect to others.
Dominant regular grid will disappear from my drawing soon....