Parallel strand lumber made from pine veneer

: Parallel strand lumber made from pine veneer. In the study, 12 beams were produced in 3 different veneer width variants, each 3mm thick, using polyurethane adhesive. The veneer was used in the form of full sheets (LVL) with a width of 120 mm and in the form of veneer strips (PSL) with widths of 1/2" (12.5 mm) and 1" (25 mm). The manufacturing method and parameters were identical for each variant. An analysis was conducted to evaluate the impact of different veneer widths on selected mechanical and physical properties of the obtained parallel-strand lumber: density and density profile, modulus of elasticity (MOE), static bending strength (MOR), shear strength, water absorption (WA), and thickness swelling (TS). It was indicated that the material made from full veneer sheets (LVL) has the most favorable mechanical and physical properties. Reducing the width of the raw material leads to a decrease in the strength properties of PSL materials. Generally, this decrease is statistically significant compared to LVL only for the raw material with a width of 12.5 mm. The type of raw material has a statistically significant impact on the tested properties, although the percentage level of this impact is generally lower than the influence of other factors not analyzed during the study.