Compression strength perpendicular to grain of Serbian spruce (Picea omorika (Pančić) purkyně) wood from plantations and natural stands

Abstract

This paper presents the results of testing the compression of Serbian spruce wood from plantations and natural stands. Compression perpendicular to grain in radial and tangential direction was tested. A dilatation of 1% was taken for a conditional boundary dilatation, and the appropriate strength for the conditional limit strength was taken. Six trees from plantations and nine trees from natural stands were analyzed. In total, 309 samples were tested. The regression analysis examined the dependence of these mechanical properties on the width of the annual rings, the percentage of late wood and wood density.

Keywords

• Picea omorika
• compression strength perpendicular to grain
• plantations
• natural stands