Comparison of three methods to determine optimal road spacing for forwarder-type logging operations

Mohammad R Ghaffariyan; K Stampfer; J Sessions

doi:10.17221/79/2008-JFS

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Comparison of three methods to determine optimal road spacing for forwarder-type logging operations

Journal article

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Comparison of three methods to determine optimal road spacing for forwarder-type logging operations

Mohammad R Ghaffariyan, K Stampfer and J Sessions

Journal of Forest Science, Vol.55(9), pp.423-431

2009

DOI: https://doi.org/10.17221/79/2008-JFS

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Abstract

Forestry Sciences

forwarding

production

cost

travelling model

optimum road spacing

Optimum road spacing (ORS) of forwarding operation in Styria in Southern Austria is studied in this paper. In a harvesting operation it is important to compute the ORS to minimize the total cost of harvesting and roading. The aim of this study was a comparison of different methods to study ORS. Data from 82 cycles were used to develop two models for predicting the cycle time using statistical analysis of a time study data base. The ORS was computed by three methods including Matthews' formula (1942), Sundberg's method (1976), and the two statistical models for predicting the cycle time. The results gave the ORS for one-way forwarding using Matthew's formula as 1,969 m, Sundberg's model as 394.4 m, and the two time study models as 463 and 909 m. The analysis of forwarding data indicated that the speed was related to a distance which contributed to the difference between models and that the loading and unloading time may be related to one or several other study variables.

Details

Title: Comparison of three methods to determine optimal road spacing for forwarder-type logging operations
Authors: Mohammad R Ghaffariyan (Author) - University of Natural Resources and Applied Life Sciences, Austria
K Stampfer (Author) - University of Natural Resources and Applied Life Sciences, Austria
J Sessions (Author) - Oregon State University, United States
Publication details: Journal of Forest Science, Vol.55(9), pp.423-431
Publisher: Ceska Akademie Zemedelskych Ved
Date published: 2009
DOI: 10.17221/79/2008-JFS
ISSN: 1212-4834
Organisation Unit: University of the Sunshine Coast, Queensland; Forest Industries Research Centre; Forest Research Institute
Language: English
Record Identifier: 99448636302621
Output Type: Journal article

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