Some structural characteristics of ashwood (Fraxinus angustifolia, Vahl.) from the Lipovljani region in Croatia

Among various problems concerning rational processing of thin logs, this work discusses the structure of juvenile and adult ashwood. Variations in fiber lengths und diameters, thicknesses of their membranes, diameters of late wood and early wood vessels, and volume percentage of vessel members, width and height of rays und ray volume percentage have all been researched. Necessary measurements in annual rings (age 5, 10, 20, 40, 70 and 100) have been made. It has been established that juvenile ashwood spreads from the pith up to approximately 40th annual ring.