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An environmental, economic and practical assessment - mizra - 08-16-2017 An environmental, economic and practical assessment of bambooas a building material for supporting structures [attachment=17844] Introduction 1.1. Sustainability as a selection criterion for building materials Building materials are commonly selected through functional, technical and financial requirements. However, with sustainability as a key issue in the last decades, especially in western countries, the environmental load of building materials has also become a more important criterion. In the year 1990, Speth [1] and Ehrlich and Ehrlich [2] introduced their relationship of sustainability with the world population, average welfare rate and environmental impact of welfare commodities, demonstrating the need of achieving a factor 20 environmental improvement by the year 2040. Many organisations and institutions have adopted this target. 2. Research methodology 2.1. Selection of studied bamboo products The study presented was restricted to culms of the bamboo species Guadua angustifolia, produced during the National Bamboo Project in Costa Rica, air-dried there, and used in the Netherlands, thus including transport from Costa Rica to the Netherlands. Due to communication problems and lack of data, an Asian bamboo species, Phyllostachus pubescens, could not be assessed. The assessment of an industrial product application of bamboo (i.e., a wall panel) and its comparison with more common alternatives, also part of the study by Lugt [11], are not presented in this paper, therefore we refer to [20]. 3. Results 3.1. Results of the environmental assessment 3.1.1. Environmental load during the life cycle Fig. 10 presents the environmental load of the bamboo culm, divided in the different stages of its life cycle. |