Crecimiento y propiedades fisico-mecanicas de la madera de teca (Tectona grandis) de 17 anos de edad en San Joaquin de Abangares, Costa Rica

Abstract

Growth and physical-mechanical properties of 17 years old teak (Tectona grandis) growing in San Joaquin, Abangares, Costa Rica. The national and international market of forest products, from certifieddad. managment forests and plantations, is increasingly more demanding as to the standards and characteristics of high quality. The physicalmecanicas mechanical properties of the teak (Tectona grandis), growing in San Joaqufn de Abangares, Costa Rica, at 30 m and 100 16´ north latitude, are determined according to the ASTM standard Destudiadas 143-83. The physical properties of teak timber studied were: basic specific weight, radial, tangential and volumetric contractions, contraction ratio, dry and green density and point of fiber saturation. The mechanical properties studied were: static flexure, shear, hardness, parallel and perpendicular compression. Also included were comparisons with teak timber harvested in other places and latitudes, as well as other hardwood species. The coefficient of variation of the basic specific weight of the San Joaquin de Abangares teak (3.4%) is half that of the Quepos teak (7%) and almost one third of the average of 50 species (10%), which is an...