7 Pa. Code § 149.31
(a) Depreciation on each capital asset shall be computed on a straight line basis. Accordingly, it is necessary to establish a schedule setting forth the useful lives of each capital asset. The following table presents the lives that shall be used:
| ASSET | Schedule of Useful Lives All depreciation straight-line |
| Land | |
| Land Improvements | 20 |
| Buildings | 40 |
| Building Improvements | 40 |
| Machinery and equipment | 12 |
| Autos | 3 |
| Light Trucks | 5 |
| Heavy Trucks | 6 |
| Tractors—Over the Road | 5 |
| Trailers | 6 |
| Furniture & fixtures | 10 |
| Re-useable containers (Pallets, Cans, Cases & Other Materials Handling Equipment) | 4 |