Course title Wood Processing
Course code MatZ2017
Credit points 3
ECTS creditpoints 4.50
Total Hours in Course 120
Number of hours for lectures 36
Number of hours for laboratory classes 12
Independent study hours 72
Date of course confirmation 18/02/2014
Responsible Unit Department of Wood Processing
Course developers
Dr. sc. ing., vad.pētn. Edgars Bukšāns
Dr. sc. ing., doc. Andis Ābele
Mg. sc. ing., vieslekt. Ulvis Miončinskis

Prior knowledge
Mate1033, Mathematics II
Mate4016, Mathematics I
MatZ2008, Wood Science
Course abstract
The aim of the study course is to learn the design and principles of rational operation of woodworking machines and cutting tools, the characteristics of sawmills products, sawn timber grading, theoretical principles, working technology and equipment of log sawing, natural and kiln drying of sawn timber.
Learning outcomes and their assessment
Knowledge - to explain the concepts and regularities of sawmill technology, equipment and sawn timber grading, and sawn timber drying technologies.
Assessment - discussions in lectures, test in sawmilling technologies, test in wood drying technologies.
Skills - to measure the dimensions and to determine the volume of sawlogs and sawn timber, and to grade the sawn timber dependent on appearance and strength according to the standards, to formulate and to solve the issues related with wood drying.
Assessment - discussions in lectures, laboratory work in sawn timber grading, test in wood drying technologies.
Competence - to adapt and to evaluate woodworking machines, processes of sawmilling and drying of sawn timber. Assessment - discussions in lectures, laboratory work in sawn timber grading and test in sawmilling technologies, test in wood drying technologies.
Course Content(Calendar)
1. General information about woodworking equipment and tools 2. Design and operation of woodworking machines and cutting tools 3. Frame saws and band saws, their operation 4. Rip saws and their operation 5. Maintenance and repair of sawing tools 6. Theoretical aspects of sawlog sawing and sawing schedules 7. Characteristics and classification of sawn timber 8. Sawmilling technologies 9. Measurement of dimensions, determination of volume and grading of sawn timber 10. Measurement of dimensions, determination of volume and grading of sawn timber – laboratory works 11. Moisture of wood and changes of physical properties of wood due to moisture 12. Principles of kiln drying of sawn timber 13. Characteristics of drying agents 14. Types of drying and equipment of sawn timber. Controlling of sawn timber drying processes 15. Compilation and calculating of drying regimes16. Indicators and evaluation of drying quality. EDG guidelines. European standards
Requirements for awarding credit points
The result of the study course is assessed by exam consisting of:
1.test for woodworking machinery and tools;
2.written test and developed laboratory work on sawmilling technologies and grading of sawn timber; 3.written test on wood drying.
Description of the organization and tasks of students’ independent work
1.independent laboratory work - evaluation of sawn timber quality for individually assigned lumbers.
2.independent work - acquisition of wood drying technologies, measurement of wood moisture content and evaluation of wood drying quality. 3.independent work - selection of wood processing machine and tools for performing a specific technological operation.
Criteria for Evaluating Learning Outcomes
1.Test for woodworking machines and tools - 33.3%.
2.Laboratory work and test on sawmilling technologies and grading of sawn timber - 33.3%. 3.Written test on wood drying - 33.4%.
Compulsory reading
1.Kozuliņš V., Tuherms H. Koksnes pirmapstrāde. Jelgava: Kokapstrādes tehnoloģijas centrs, 2004. 210 lpp.
2.Mooslechner W. Winterholz. Salzburg- Munchen, Verlag Anton Pustet, 2009. 136 p. 3.Trübswetter T. Holztrocknung, Verfahren zur Trocknung von Schnittholz-Planung von Trocknungsanlagen, 2009. 204 p.
Further reading
1. Sleņģis M. E. Kokzāģēšanas instrumenti, to sagatavošana darbam. Rīga: LAK amatniecības lit. apg., 1998. 120 lpp.
2. Bowyer J.L., Shmulsky R., Haygreen J.G. Forest Products and Wood Science. Ames, Iowa: Iowa State Press, 2003. - 554 p. 3. EDG-Recomendation "Assessment of drying quality of timber", 1994, 27 p., pieejams http://www.timberdry.net/downloads/EDG/EDG-Recommendation(eng).pdf
Periodicals and other sources
1.„Baltijas Koks” ISSN 1407-6667.
2.Koka nozares laikraksts „Holz-Zentralblatt”. ISSN:0018-3792.
3.http://www.timberdry.net (portāls par koksnes žāvēšanu).
4.Standartu katalogs https://www.lvs.lv.
The study course is included in the compulsory part of the Forest Faculty professional higher education bachelor study program "Forest Engineering".