|  | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
---|---|---|---|---|---|---|---|---|
 |  | Structure | Arch | Hydro mechanic | Elect/Comm | Safety | Passage facilities | Wt. vector |
1 | Structure | 1 | 2 | 3 | 2 | 3 | 2 | 0.315 |
2 | Arch | 1/2 | 1 | 1 | 1 | 2 | 2 | 0.173 |
3 | Hydro mechanic | 1/3 | 1 | 1 | 1 | 2 | 2 | 0.162 |
4 | Elect/Comm | 1/2 | 1 | 1 | 1 | 1 | 1 | 0.138 |
5 | Safety | 1/3 | 1/2 | 1/2 | 1 | 1 | 2 | 0.115 |
6 | Passage usage facilities | 1/2 | 1/2 | 1/2 | 1 | 1/2 | 1 | 0.097 |
 | Summation | 3.1667 | 6 | 7 | 7 | 9.5 | 10 | 1 |