1, quantity. Hunan municipal road subgrade needs to measure the quantity of replacement rubble, including replacement area and replacement thickness.

2, the use cost of machinery. The time and type of machinery, as well as the rental cost and fuel cost of machinery, should be considered in the operation valuation of replacing flaky machinery in Hunan municipal subgrade.

3. Labor cost of workers. The wages and benefits of mechanical operators should be considered in the valuation of flaky machinery for replacing municipal road subgrade in Hunan Province.

4. Other expenses. Other related expenses, such as transportation expenses, equipment maintenance expenses, insurance expenses, etc. It needs to be considered in the operation pricing of replacing flaky machinery in Hunan municipal road subgrade.