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Assessment of the rate of lumber recovery of Eucalyptus saligna at Gefere sawmill in Gimbi area, Ethiopia

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Abstract

Eucalyptus saligna, is currently gaining significance in lumber production and for construction purposes in Ethiopia. The objective of the study was to investigate the lumber recovery rate of Eucalyptus saligna and the factors influencing it. The operation yielded 47.33 m3 of lumber, accounting for 53.51% of the total lumber recovery rate. Furthermore, 25.49 m3 (28.81%) of slabs and 15.65 m3 (17.69%) of saw dusts were obtained. Lumber recovery rate was recorded 42.86% using through and through (under 35 cm of diameter classes), while 56.31% of lumber recovery rate were achieved using quarter sawing method (above 35 cm of diameter classes). The magnitude of the rate of lumber recovery was reduced by several factors such as end-splitting and brittle-heart. It was observed that cutting use of wider saw kerf was caused a reduction in the rate of lumber recovery owing to generation of increased quantity of sawdust.

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Acknowledgements

We thank the Technical and Vocational Training Institute (TVTI) and Faculty of Civil Technology and Department of Wood Technology of the Technical and Vocational Training Institute for providing the financial support for this study. We are thankful to the Gefere sawmill, Oromia TVET Bureau, Nekemte Poly Technique College, Wellega district Forest and Wildlife Enterprise for their co-operation and help during the study. The authors also thanks to Prof. Tsegaye Bekele for his useful comments on an earlier version of this manuscript. The help received from all sources is greatly acknowledged.

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Authors and Affiliations

  1. Department of Wood Technology Management, Faculty of Civil Technology, Technical and Vocational Training Institute, Addis Ababa, Ethiopia

    Mihiretu Hambisa, Yashwant S. Rawat, Moti Nebiyu & Misganu Eba

  2. Forest Products Innovation Research and Training Centre, Ethiopian Forests Development (EFD), Addis Ababa, Ethiopia

    Anteneh T. Tekleyohannes

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  1. Mihiretu Hambisa
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  2. Yashwant S. Rawat
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Correspondence to Yashwant S. Rawat.

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Hambisa, M., Rawat, Y.S., Nebiyu, M. et al. Assessment of the rate of lumber recovery of Eucalyptus saligna at Gefere sawmill in Gimbi area, Ethiopia. J Indian Acad Wood Sci 20, 62–72 (2023). https://doi.org/10.1007/s13196-022-00307-6

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