ADDIS YIBELTAL (M.SC.) AND KASSAHUN ADMASSU (PH.D)
The paper attempts to have a critical insight in to the construction activity regarding construction material, the generated waste, their embodied energy and CO2 emission as an ongoing and future concern of the human habitat. Infrastructure development and handling processes including: design, construction, service time care, deconstruction and salvaging at life end could be managed by establishing embodied energy and CO2 emission factors fit for individual local conditions until such a time that the world can have a unifying descriptor. The establishment of the anticipated factor can help the whole industry stakeholders to consider knowledge based environmental proactive and sustainable development by selecting low energy construction material type, its service life state and the whole life cycle handling; right from the design stage. The study conducted on selected five building construction sites has revealed that, the materials waste alone has inflated the embodied energy and the CO2 emission by 37 and 17%; respectively. The whole effort in here is to ignite awareness and sensitize policy makers and the society at large; how the construction activity and the materials used are impacting the environment and suggest the method to be adopted to join the international endeavor in order to curb the unmonitored infrastructure development, materials use and abuse leading to a non-sustainable development both in terms of economy and eco-friendliness for the aspired for social welfare and wellbeing.