| Main Attributes | Cronbach’s (α) | Reliability |
| Standardization | 0.949 | High |
| Economical Impact | 0.651 | High |
| Accessibility | 0.572 | Low (within acceptable range) |
| Constructability Consideration | 0.866 | High |
| Effect on Constructability | 0.624 | High |
| Installation Sequence | 0.596 | Low (within acceptable range) |