Using of knotty wood features in the manufacture of final sawn production

The objective of the work is the study of the features of knotiness of the produced boards faces and the development of directions for their use in the final sawn timber production. In order to have a quantitative understanding of the knotting peculiarities on the faces of produced boards, the nature of the knots distribution on sawn timber, experimental work was carried out. The initial data collection consisted of the following stages: selection and certification of saw logs, cutting logs into timber and their passporting. For certification boards used the method of photographing. According to passports and photographs, boards were analyzed using AutoCAD and MS Excel. There is a tendency of uneven knots distribution relative to the central axis of the board. The obtained data predetermine the need for further research on the trends of the location of the knots in the trunk. In this case, it is necessary to study not so much a specific trunk; it is required to obtain a pattern of the propagation of knots in forest stands along a group of homogeneous trees. In this case, predicting the location of the knots in the logs can influence the technology.