Example of a Hybrid Life-Cycle Assessment of Construction Processes
Publication: Journal of Infrastructure Systems
Volume 12, Issue 4
Abstract
Design and construction industries, along with owners, have an increasing interest in and responsibility for the environmental impacts of buildings. Since the environmental impacts of a building’s life cycle are considerable, quantification of all phases is important, especially the construction phase, which is often glossed over. This research focuses on the construction phase of a building project. Generally, the life-cycle inventory created in performing a life-cycle assessment (LCA) is developed using either a process or input–output approach; however, both techniques have distinct advantages and disadvantages. A hybrid approach combining both methods’ advantages has been proposed and will be demonstrated. Existing hybrid models are reviewed, along with a recommendation of a hybrid model for construction. A preliminary case study of a precast concrete parking garage’s construction using hybrid LCA methodology is presented. Preliminary investigations indicate transportation, equipment activity, and support functions have the largest effects on the environment.
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Acknowledgments
Financial support for this research was provided by National Science Foundation Grant No. NSFCMS-0327878.
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© 2006 ASCE.
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Received: Jul 26, 2005
Accepted: Sep 22, 2005
Published online: Dec 1, 2006
Published in print: Dec 2006
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