In architecture the term of passive or low energy architecture is already known, which is not only talking about energy efficeincy in daily use but also talking about the material whether it was need lot of energy to produce it or even in transporting that material. One of the criteria is selecting an environmental friendly material and bamboo is a material that can fit to that. Eco Campus Outward Bound Indonesia is the first character development campus in Indonesia which develop a sustainable environment with Great Hall Eco Campus OBI, whereas the bamboo material is use as the main construction and will bethe object of this paper. The purpose of this observation on bamboo material is to understand and study this material and its coupling as a construction in a building. Based on the analysis result, the application of bamboo material as a construction starts from procurement until the maintenance afterward. These are the factors that affect the durability and the longevity of bamboos in building
