Investigating Compressive and Cleavage Strengths of an Indian Bamboo Species

Abstract

Depleting timber resources has generated interest in bamboo, a traditional sustainable building material of the tropics. However, dearth of strength data has been a major hindrance in its engineered application. The present paper reports experimentally verified compressive and cleavage strengths of an Indian bamboo species that is considered suitable for structural applications. The investigated compressive strength is well comparable with that of equivalent timber. The paper reports lesser strength of split bamboo specimens than round ones, which contradicts the provisions of some codes. The paper also observes that compressive strength of bamboo generally increases along its culm length, gradually from bottom to top. The paper further identifies a factor, which when multiplied by the density of a given specimen, yields corresponding permissible compressive strength. Low values of coefficients of variation and skewness of the experimental data indicate its reliability. This paper may be considered as a step towards engineered application of bamboo.