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|Title: ||Processing of small diameter logs: effect of log diameter, sawing pattern and some bole variables on lumber recovery|
|Authors: ||Ayarkwa, J.|
|Issue Date: ||1999|
|Publisher: ||Ghana J. of Forestry|
|Citation: ||Ghana J. of Forestry, vol. 8|
|Abstract: ||Effect of log diameter, sawing pattern, log length and log bole form on lumber yield have been studied with a view to finding the most efficient processing technique for small diameter plantation grown Teak (Tectona grandis) logs. The study has shown that there are significant differences between lumber yields from log diameter classes 10-20. 21-30 and 31-40 cm. and that bigger log diameters generate higher lumber yields than smaller log diameters. Log diameters of more than 20 cm give mean lumber yield of more than 50 % compared with those below 20 cm which generate about 43 % mean lumber yield. A linear regression model developed could predict teak yield from log diameter ranging from 10 to 40 cm. Cant sawing method has also been found to result in higher lumber recoveries than through and through sawing method, especially for log diameters above 20 cm. A reduction in lumber yield with increasing log length has also been found in the study. The results of the study also indicate that small diameter plantation grown logs of more than 30 cm diameter can be efficiently processed to give improved yields, if suitable sawing methods are adopted.
Keywords: Small diameter log, Sawing pattern, Lumber recovery|
|Description: ||This article was published in 1999 by Ghana J. of Forestry.|
|Appears in Collections:||College of Architecture and Planning|
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