12-14 September, 2011, Lucknow - Earth Science India

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National Conference on Science of Climate Change and Earth’s Sustainability: Issues and Challenges ‘A Scientist-People Partnership’ 12-14 September, 2011, Lucknow DEVELOPMENT OF A COMPREHENSIVE CONSTRUCTION CARBON CALCULATOR - IN AN INDIAN PERSPECTIVE Rahul Misra and Pranveer S. Satvat Environmental, Water Resources and Transportation Engineering Division, School of Mechanical and Building Sciences, VIT University, Vellore - 632014 email: rahul_misra200617@rediffmail.com Global increase in carbon emissions causing climate change has captured special attention among environmentalist during Kyoto Protocol and Copenhagen Summit. The later summit imposed legal bindings on the nations, especially for industrialized economies to cut carbon emissions. Meeting urgent need, various emission monitoring methodologies have been evolved including carbon footprint calculator, the most preferred tool, especially for construction sector. However, on critical analysis of globally available construction carbon calculators; wide discrepancies in carbon estimation methods and huge variations in results were arisen, even with similar inputs. Similarly, calculators are inconsistent in identification of actions that significantly contributes in carbon emissions. Several calculators also lack transparency and user friendliness. The criticality is further enhanced in case of developing nations as most calculators require data in unconventional units. The present study was conceived to meet the pressing necessity for development of a more efficient and comprehensive construction carbon calculator. The study considered carbon foot prints of materials and actions as applicable for growing economies, especially in Indian context. The designed calculator deals with all three phases of building lifecycle as accounts for carbon emission during construction, operation and maintenance. It may be effectively applicable in billing the carbon footprint of different kinds of buildings and for estimation of incremental impact on concentration of carbon dioxide in the atmosphere. On evaluation with two sets of real construction data, the formulated calculator is proven to be more efficient and comprehensive as incorporates better sense of environmental protection. 114
National Conference on Science of Climate Change and Earth’s Sustainability: Issues and Challenges ‘A Scientist-People Partnership’ 12-14 September, 2011, Lucknow A CRITICAL ANALYSIS OF CONSTRUCTION CARBON CALCULATORS Rahul Misra and Pranveer S. Satvat Environmental, Water Resources and Transportation Engineering Division, School of Mechanical and Building Sciences, VIT University, Vellore - 632014, Tamil Nadu email: rahul_misra200617@rediffmail.com Anthropogenic developmental activities have been appeared as prime culprit for increasing greenhouse gases, causing climate change. The construction sector is one of the most severe contributors among developmental activities, and got special attention, especially by developing courtiers. Meeting the urgent need, many monitoring and management tools for carbon emissions are emerged. However, calculation of carbon footprint is most preferred and prevalent on internet, but none calculators been universally accepted by scientific community. Thus, the present study been considered for critical evaluation of six universally available construction carbon calculators developed by federal and non-federal agencies. Even with same input. these calculators generate widely discrepant results, often as much as several hundred metric tons of carbon emission. Overall, the calculators are inconsistent in estimation and adopted methodologies; especially in identification of carbon contributing actions. Similarly, several calculators hide incorporated methods for estimations that impede comparison. Additionally, few calculators also require data in unconventional units and lack user friendliness. An attempt has also been made to identify- the best calculator that incorporated most of culprit activities including off-site and allied actions. Though construction carbon calculators can enhance the competency in designing buildings posing lesser carbon footprints, the paper reveals the urgent necessity for development of better construction carbon calculators with higher comprehensiveness, friendliness and transparency. 115
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12-14 September, 2011, Lucknow - Earth Science India

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