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1 Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology

1 2018

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Bending characteristics of beech structural timber (Fagus sylvatica, L.)

Rohanová A., Bajza O.

Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology

2018

No. 104

295--301

Beech wood is a perspective material in building constructions. The design is required to define its characteristic parameters according to EN 338 (2016). Determined through the bending characteristics (bending strength and modulus of elasticity) and density wood. Structural beech timber source in Slovakia was tested by bending test according to EN 408 + A1. The bending characteristics of bending strength, modulus of elasticity (global) were determined on body dimensions (150×50×3000 mm, n = 52, w = 12%). Wood density was measured on small specimens (?408) and boards (?board).The normality of distribution bending characteristics and density wood was evaluated by three independent statistical tests.The tests do not negate the zero hypothesis of the normal distribution of the observed characteristics.The correlation between f408 and Em,g,408 is weak r2 = 0.11.Between the density of wood ?408 and the bending strength fm,408 no correlation has been demonstrated FRÜHWALD (2008), CIBECCHINI et al. (2016).Correlations between the modulus of elasticity (global) and wood density (?board) is significant (r2 = 0.39).The results form the basis for assessing the quality of beech wood in strength classes.