| PSC | Description
|
| 5410 | Prefabricated and Portable Buildings |
| 5411 | Rigid Wall Shelters |
| 5419 | Collective Modular Support System |
| 5420 | Bridges, Fixed and Floating |
| 5430 | Storage Tanks |
| 5440 | Scaffolding Equipment and Concrete Forms |
| 5445 | Prefabricated Tower Structures |
| 5450 | Miscellaneous Prefabricated Structures |