WOOD RESEARCH Volume 69, Number 3, 2024
ROMAN HERDA, MILOŠ SLIVANSKÝ, JÁN BRODNIANSKY, and TOMÁŠ KLAS

DETERMINATION OF FLEXURAL STRENGTH AND YOUNG’S MODULUS OF ELASTICITY OF ACTIVELY BENT WOOD

The article focuses on the experimental verification of wooden laths with a cross-section of 10 mm x 40 mm which were selected for active bending. The laths are made of pine wood and are 2 m in length. The research includes experimental measurements to determine the limit deformations achieved by bending the wood without chemical treatment, by applying compressive force to an originally straight beam, causing it to buckle and further deform. Ten bending tests of beams were performed, and from the same pieces, 21 tests were conducted using the four-point bending test to determine the flexural strength, and 30 tests to determine the global modulus of elasticity

WOOD RESEARCH Volume 61, Number 2, 2016
Jaroslav Sandanus, Kristián Sógel, and MILOŠ SLIVANSKÝ

Results of rheological test on timber trusses

In the paper the results of exceptional experimentation are presented, which focuses on the long-term loading of metal plate connected wood trusses. The uniqueness of research project is given by real dimensions of long-span samples and by the term of loading over one year. The aims of long-term experimentation were detection of two main parameters. The magnitude of additional deflections and time of load action needed for their development. In the paper the deflection curves are presented, namely time dependence of deflections. In the paper the recommendations for producers of metal plate connected wood trusses and for structural engineers are mentioned. The purpose of that research project is to increase the safety and reliability of timber load-bearing structures.