There are several methods to determine your construction depreciation.
Cost Value
If you want to know the value of your construction equipment, you need to know its purchasing price.
Salvage Value
With salvage value, that is an estimated sale amount for your asset. Mostly this value is calculated at the end of its useful life.
Book Value
Book value is the value of the construction equipment used for tax purposes and not the resale value.
Click here to learn more about how depreciation of construction equipment is calculated.