How are “enclosing walls” defined in conjunction with Major Vertical Penetrations? What about the floor of the stair tower or the elevator pits of the elevator shaft?
The term “enclosing walls” refers to those walls required by building code, and not to the architectural or decorative treatments of those walls. The floor of a stair tower and the pits of the elevator shaft, when found inside the enclosing walls, are part of the Major Vertical Penetration. However, if an area is not within the enclosing walls (such as a storage room under the stair tower), the area is part of the Rentable Area.
