| CSI Code | Short Description | Extended Description |
| 15050 | Basic Mechanical Materials and Method |
| 15060 | Hangers and Support |
| 15070 | Mechanical, Sound, Vibration and Seismic Control |
| 15075 | Mechanical Identification |
| 15080 | Mechanical Insulation | Duct Insulation Equipment Insulation Piping Insulation |
| 15090 | Mechanical Restoration and Retrofit |