What is number 3?
floor and ceiling
What is number 1?
Foundation
What is number 6?
roof
Point where are floor and ceiling?
3
Point where are exterior walls?
4
What is number 2?
Structure
Point where is structure?
2
Point where are windows?
5
What is number 5?
Windows
What is number 4?
Exterior walls
Point where is roof?
6
What is number 7?
Internal walls
Point where are internal walls?
7
Point where is foundation?
1