{'fraction_non_alphanumeric': 0.01762632197414806, 'fraction_numerical': 0.01410105757931845, 'mean_word_length': 5.0, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Modulus of elasticity as a criterion for strength grading of structural sawn
timber

Modulus of elasticity as a criterion for strength grading of structural sawn timber. The paper presents
an analysis that was performed on sawn timber originating from the Silesian Forest District in terms of
parameters related to the elastic properties of the material. As part of the research, static modulus of elasticity (in
accordance with EN 408: 2010 + A1: 2012) and dynamic modulus (using a portable device for machine strength
grading) were determined. Both elasticity modulus were correlated with the density of the material, and
compared with the database developed on the basis of previous research carried out at Faculty of Wood
Technology of WULS- SGGW, including the results of strength grading of sawn timber from five natural Polish
forest regions.

