Investigation of Sawmill Management and Technology on Waste Reduction at Selected Sawmills in Moratuwa, Sri Lanka
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Amarasekera, H.S.
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Abstract
The demand for sawn timber and wood-based products is rising steadily with new developments and the growing domestic consumption in Sri Lanka. Therefore, it is important to strike a balance between the increasing demand and consumption of forest resources. Thus, the key objective of this study was to investigate the effects of sawmill management and technological parameters on loss in conversion from logs to sawn timber and to compare the sawmill efficiency in private sawmills with the state timber corporation sawmill. Sawmill management and technological parameters were studied in 21 private sawmills and State Timber Corporation sawmill in Kaldemulla to evaluate the effects on loss in conversion. The selected sawmills represent all types available in Sri Lanka, i.e., frame saw, circular saw and band saw mills. Based on the results, mean percentage loss in conversion of teak and mahogany timber for all sawmills (private and State Timber Corporation) in Moratuwa found to be 53.10%. Significant differences were observed in loss in conversion values between the three categories of private sawmills as well as within sawmills of the same category. It was shown that loss in conversion values also varied with sawmill management and technological parameters such as type of machinery employed, sharpening frequency and sawyer’s experience, saw setting, availability of log alignment equipment and saw guards, oversizing and sawn timber sizes.
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Journal of Tropical Forestry and Environment
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5
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1
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© 2015. The publisher retain the copyrights of contents published, and all open access articles are distributed under the terms of the Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 Unported License[U1], which permits unrestricted use, distribution and reproduction in any medium, provided that the original work is properly cited. You can download the Legal Code for this License at: http://creativecommons.org/licenses/by-nc-nd/3.0/legalcode
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Subject
Environmental Sciences not elsewhere classified
Sawmill
Loss in conversion
Waste reduction
Mahogany
Teak