Timber grading of Pinus uncinata , a lesser known pine species from the pyrenean mountain range

Affordable Access

Download Read

Timber grading of Pinus uncinata , a lesser known pine species from the pyrenean mountain range

Authors
  • Burgers, Agnès
  • Montero, Cédric
  • Sera, Jordi Gené
  • Casals, Marcel Vilches
  • Modol, Eduard Correal
  • Langbour, Patrick
  • Thibaut, Bernard
Type
Published Article
Journal
Maderas Ciencia y tecnología
Publisher
SciELO Comision Nacional de Investigacion Cientifica Y Tecnologica
Publication Date
Jan 27, 2019
Issue
ahead
Identifiers
DOI: 10.4067/s0718-221x2019005000213
Source
MyScienceWork
Keywords
License
Green

Abstract

Timber grading is an essential step into the value process to determine wood usability for structural uses. It requires well-described characteristics obtained easily by taking non-destructive measurements to quantify reliable indicators of mechanical properties. In this paper we present an approach based on both timber scale and clear-wood scale measurements using the case of Mountain pine (Pinus uncinata). An important experimental plan have been performed from collected trees of French and Spain Pyrenean regions allowing significantly the use of inter-correlations between measurements. The physical properties of clear wood present an important adaptation of tree growth condition with a lower modulus of elasticity as a consequence of microstructure at cell-wall level but a conventional modulus or rupture in bending for pines. However, the results on timber presents an important the difference between visual and machine grading for this species in view of mechanical properties considered. The results obtained also show possible improvement and limitations of current regulation in the grading mountain pine timber for structural use.

Report this publication

Statistics

Seen <100 times
Downloaded <100 times