THE VALUE VERSUS VOLUME YIELD PROBLEM FOR LIVE-SAWN HARDWOOD SAWLOGS

The potential conflict between value and volume maximization in sawing hardwood sawlogs by the live sawing method was analyzed. Twenty-four digitally described red oak sawlogs were sawn at the log orientation o f highest value yield. Five opening face sawlines were iteratively pla ced in the sawlog at 1/4-inch intervals and lumber grades, volumes, an d values from completely sawing the log at each opening face position were determined. Volumes were computed for several sawing positions of interest: maximum and minimum volume, minimum opening position, mean volume. and centered solution. Dollar values and distances from minimu m opening position were also determined for these sawing positions of interest. Statistical comparisons of these variables showed that the c onflict between value and volume yield was significant. A potential av erage loss of $2 per sawlog was indicated if volume yield was maximize d at the expense of value yield. Results also indicated that a precise knowledge of internal defect location is apparently required to obtai n maximum value yield. An internal scanning system will be required to obtain the needed defect location information.