#### 5 ESTIMATING LOGGING UNIT COSTS

where f is an adjustment factor for terrain or brush The production rate P in cubic meters per hour is P = V/T where V is the volume per tree m 3 and T is the time per tree hr The unit cost of felling is UC = C/P where C is the machine rate for felling and bucking and P is the production rate EXAMPLE A power saw and operator cost $ per hour and the time to fall and buck a tree is