PL EN


Preferencje help
Widoczny [Schowaj] Abstrakt
Liczba wyników
2014 | 57 | 193 |
Tytuł artykułu

A comparative analysis of pine and beech wood classification according to Polish and EU norms

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Investigations were carried out at timber storage sites (depots) on large-sized pine (110 pieces) and beech (130 pieces) wood from three forest districts within the territory of the Regional Directorates of the State Forests (RDSF) of Łódź, Lublin and Kraków. As a result of a comparison of both classification systems, it was proved that in the case of pine wood classified according to EU norms, the shares of the number of pieces and volume in classes B and C decreased, whereas they increased in class D when compared with Polish classification. Analogically, in the case of beech wood, a decrease in the share of the number of pieces and volume in classes A, B and D, and an increase in class C were recorded. Among the most common defects that influence the classification of both sorts of wood, open and burl knots as well as curvatures are recognised, while in the case of beech wood, shakes and galls (disease T stains) are encountered. The results of the classification determined differences in the wood value. According to the pricelists for wood standing in forest districts where the raw wood under investigation originated, it was established that the value of the pine wood classified according to the EU norm decreased by ca. 7.6% when compared with the value estimated using the Polish norm. The value of the beech wood was nearly identical in both cases, which was mainly due to the higher share of wood of class C and lower share of class D upon applying the EU standards, in comparison with the Polish classification system.
Wydawca
-
Rocznik
Tom
57
Numer
193
Opis fizyczny
p.135-145,fig.,ref.
Twórcy
autor
  • Department of Forest and Wood Utilization, University of Agriculture, Krakow, Poland
autor
  • Department of Forest and Wood Utilization, University of Agriculture, Krakow, Poland
autor
  • Department of Forest and Wood Utilization, University of Agriculture, Krakow, Poland
Bibliografia
  • Cenniki drewna dostępne na stronach internetowych nadleśnictw [2013]: (Wood pricelists available on the forest districts websites)
  • Dzbeński W., Wiktorski T. [2003]: Normy europejskie w porównaniu z polskimi na tarcicę ogólnego przeznaczenia (The European standards concerning sawnwood for general purposes as compared with the Polish standards). Przemysł Drzewny 9: 14–18
  • Karaszewski Z., Bembenek M., Mederski P.S., Szczepańska-Alvarez A., Byczkowski R., Kozłowska A., Michnowicz K., Przytuła W., Giefing D.F. [2013]: Identifying beech round wood quality – distributions and the influence of defects on grading. Drewno56 [189]: 39–54. DOI: 10.12841/wood.1644-3985.041.03
  • Michalec K. [2005]: Comparative analysis of spruce timber quality classified according to the Polish standards and the European Union standards. Zesz. Nauk. AR Kraków 419. Sesja Naukowa 91: 449–455
  • Szczepaniak J., Spława-Neyman S. [2001]: Spodziewane efekty klasyfikacji sosnowego drewna wielkowymiarowego według wymagań norm europejskich (Expected effects of large-sized pine wood classification according to the European standards). Wood – Mizer Aktualności 16: 4–5
  • Witkowska J. [2000]: Surowiec drzewny wybranych gatunków drzew liściastych w Polsce w świetle norm europejskich (Raw wood of selected broadleaved species in Poland in the light of the European standards). Przemysł Drzewny 11: 18–23
  • List of standards
  • PN-92/D-95008:1992 Polska Norma. Drewno wielkowymiarowe liściaste. Wspólne wymagania i badania (Wood large sized broadleaved. General requirements and methodes of test)
  • PN-EN 1316-1:1999 Drewno okrągłe liściaste – Klasyfikacja jakościowa – Dąb i buk (Hardwood round timber. Qualitative classification. Oak and beech)
  • PN-ENV 1927-2:2002 Klasyfikacja jakościowa drewna okrągłego iglastego. Część 2: Sosna (Qualitative classification of softwood round timber – Part 2: Pines)
  • Warunki techniczne. Drewno wielkowymiarowe iglaste [2002]: Załącznik nr 1 do zarządzenia Dyrektora Generalnego Lasów Państwowych (Technical conditions – large-sized timber 2002. Annex no. 1 to the Regulation of the Director-General of the State Forests)
Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.agro-6526a39a-4b42-46e4-83f6-5b6f2a169307
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.