What is the wall of the staircase? What is the distinction between exterior and interior walls?
The external walls are the place where the rain is basically, the inner wall of the rain. Some of the internal and external walls are separated from the drip line,
Outside wall and interior wall distinction:
Exterior wall - wall that is in direct contact with outdoor air. (Direct contact refers to no walls and doors and windows and outdoor air separated)
Interior wall - a room where the space is separated from the room and does not come into direct contact with outdoor air.
Stairs between the walls of the wall or the wall depends on the location of the wall, the general situation of the building outside the wall called the external wall, otherwise called the wall.
