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In this study; it is determined that quantitative yield have obtained with sawing
of 60-80 mm thickness unedged lumbers and 22-30 mm thickness slab boards with live
saw method of 3rd quality class logs obtained from Beech (Fagus orientalis Lipsky)
that is commonly worked up and used a tree species in the lumber industry in Turkey.
The logs used in the experiments have chosen among the logs-length 2m, 4m and 6m,
midle-diameter 20 cm, 40 cm, 60 cm and 80 cm, taper %3- available in the log yards of
the ORUS Duzce Lumber Factory.
As a result, the mean lumber quantitative yield in 20cm, 40cm, 60cm and 80cm
diameter classes, 2m length logs are %66.93, %78.93, %80.1 and %79.77; in 4m length
logs are %61.1, %71.73, %75.77 and %75.93; in 6m length logs are %61.7, %75.17,
%79.7 and %79.53 respectively.
Acording to the results, while log length increases, quantitative yield decreases
in all diameter classes. Yield values increase depend on the increase of log diameter in
20 cm, 40 cm and 60 cm diameter class. However, it is undertood that the increasing
doesn’t continue in 80 cm diameter class.