Table 4 .--Harvesting system costs based on production capabilities 



Cost 



Equipment : 



Operation 

 cost including 

 wages 



; Production . 

 capacity 1 



• I J ■ 



Balanced 

 operation 

 (System I) 2 



Maximum 

 capac ity 

 (System II) 





/7 



$/hr 



BDT/hr 



$/BDT/hr 



$/PDT/hr 



Drott Fel ler-Buncher 



15.25 



25 . 45 



.600 



.600 



Timber jack Grapple 











Skidder 



11.26 



14. 86 



.905 



. 758 



Morbark Metro 











Chipharvestor 



29 .50 



34.00 



1 .359 



.867 



Heelboom Loader 



13.25 



23. 70 



.559 



.559 



Transport 











Bunks 



24.20 



5.2 



5.410 



5.410 



Vans 



24.26 



3.9 







Total 







$8,833 



$8. 194 



Using productive hours only; i.e., deducting idle time. 

 2 See table 5. 



Table 4 gives hourly operating costs and production capabilities of the equipment 

 used in a proposed logging operation in dollars and bone dry tons of fiber, respec- 

 tively. In the last two columns, production in dollars per bone dry ton per hour is 

 given for equipment (operating at the capacity experienced during the study) for a 

 balanced hot logging operation (System I) and a scheduled operation that provides for 

 each equipment type operating at full capacity (System II). Table 5 shows what is 

 meant by a balanced operation-- if all of the equipment is moved to the job about the 

 same time, then the entire harvesting operation would produce at the rate of the least 

 productive element. In this case, it would be the fel ler-buncher ; i.e., 25.45 BDT/hr. 

 Table 5 defines the number of units of each class of equipment needed for a balanced 

 logging operation (column 3). In a hot logging operation, all elements or subsystems 

 operate simultaneously. In column 5, the percentage of utilization of each class of 

 equipment is shown. Columns 6 and 7 are used for scheduling the equipment on the job 

 as shown in figure 7. 



From Table 4, the costs are $8.83/BDT and $8.19/BDT for Systems I and IT, respec- 

 tively. If these two systems were to operate at 80 percent efficiency, which is a 

 reasonable goal, then the costs are $11.02 and $10.22. These figures are exclusive of 

 landing, and supervision, crew transportation, and service, which were computed to be 

 as fol lows : 



Landing $1.67/BDT 



Supervision, Trans- 

 portation, Service . 42/ BPT 



$2.09/BDT 



These costs must be added to the other costs $; i.e., $11.02 + $2.09 = $13.11, and 

 $10.22 + $2.09 = $12.31, respectively. 



1 1 



