WOOD RESEARCH Volume 61, Number 4, 2016
Vladimír Duchoň, Tomáš Klas, Orsolya Katona, Ján Brodniansky, Ľuboš Balcierák, Jaroslav Sandanus, and Kristian Sógel

Experimental tests of timber connections with glued-in rods in bending

The article deals with research of joints with glued-in threaded rods. The introduction provides a brief presentation of the issue. The first part focuses on axially loaded glued-in threaded rods. The second part explains the behaviour of joints with glued-in rods loaded by bending moment. Theoretical analysis was performed on models based on the finite element method. Verification of theoretical results was realized by practical experiments. Tensile tests were carried out on timber blocks with glued-in bars to verify the depth of affixing. Furthermore, the resistance in bending was confirmed on actual beams with glued-in bars in the middle of the span. Results and the follow-up work are summarized in the conclusion.

WOOD RESEARCH Volume 63, Number 3, 2018
Tomy Listyanto

Wood quality of Paraserianthes falcataria L. nielsen syn wood from three year rotation of harvesting for construction application

Paraserianthes falcataria is fast growing species that considered being potential lumber for construction application. The aim was to evaluate the effect of year rotation of harvesting on quality of Paraserianthes falcataria wood for construction application. Nine trees of Paraserianthes falcataria with harvesting rotation of 5, 7, and 9 years, were harvested from the private forest. Moisture content, specific gravity, shrinkage, MOE, MOR, and compressive strength parallel to grain were measured for wood quality parameters in accordance to JIS Z 2101. Durability test were conducted against dry wood termite (Criptotermes cynocephalus Light). The results showed that year harvesting of Paraserianthes falcataria influence significantly on specific gravity, and compressive strength parallels to grain. Paraserianthes falcataria wood is classified into strength class III-IV, which is properly used for light construction. To obtain optimum quality for construction purposes, Paraserianthes falcataria tree is recommended to be harvested in minimum harvesting rotation of 7 years.