ABSTRACT
As a consequence of the edaphoclimatic factors, the properties of the wood can be influenced according to the site of development of the tree. The aim of the research was to verify the influence, in some physical and mechanical properties, of the extraction site of bacthes of Tatajuba wood specie (Bagassa guianensis) from two different regions of Brazil (Alta Floresta and Bonfim do Sul, Mato Grosso and Roraima Brazilian states, respectively) at 12% of moisture content. For each bacthes two physical and five mechanical properties were determined, according to ABNT NBR 7190:1997 Brazilian Code. In order to evaluate the influence of the extraction region on the properties, Kruskal-Wallis analysis of variance was performed, considering significant results (non-equivalent values) for those that met P-value <0.05. According to the results, the different batches of the same wood species presented equivalent average values of the studied properties in relation to the set, but compressive strength parallel to the grain and apparent density average values were not significant between the two sites. The characteristic values of compressive strength parallel to the grain were different for the different batches, at the moisture content of 12%, classified the same species in different strength classes (D50 – Alta Floresta and D60 – Bonfim do Sul).
Keywords
Amazon Forest; Characterization; Strength classes; Timber structures