QUANTITATIVE YIELDSFROM THE CUTTING OF THE STEMS OF WHITE PINE (PINUS SYLVESTRIS L.), DEPENDING ON THE THICKNESS AND LENGTH OF THE DETAILS AND THEDEFCTS OF THE WOOD

Abstract

In the current work are presented the results from an experimental procedure for the estab-lishment of quantitative yields and their variation depending on the thickness and length of details, the defects of the wood and the location of the logs in the stems of Scots pine (Pinus sylvestris L.). The experimental procedure was performed according to standardized methodol-ogy with selected model stems. It has been established the presence, size and number of defects of treated wood by using EN 1927-2 standard. In the normal technological sequence the stems were cut of sections with lengths 1, 2 and 4 m, and from the obtained sections (logs for sawing) according to acute sawing method the boards were cut of details with a thickness of 3, 6 and 9 cm. The obtained results allow drawing analysis and conclusions in relation to quantitative yields and their change depending on the thickness and length of the details. On the basis of these results an analysis can be drawn in relation to the impact of disadvantages of the wood and the importance of the place for harvesting of the logs from the tree stems. The resulting information allows more accurate and objective assessment of the technology and the machines in terms of more efficient wood processing and manufacturing of materials from solid wood.