Quantifying the environmental impacts and simulating the energy consumption of building�s components at the conceptual design\nstage are very helpful for designers needing to make decisions related to the selection of the best design alternative that would lead\nto a more energy efficient building. Building Information Modeling (BIM) offers designers the ability to assess different design\nalternatives at the conceptual stage of the project so that energy and life cycle assessment (LCA) strategies and systems are attained.\nThis paper proposes an automated model that links BIM, LCA, energy analysis, and lighting simulation tools with green building\ncertification systems. The implementation is within developing plug-ins on BIM tool capable of measuring the environmental\nimpacts (EI) and embodied energy of building components. Using this method, designers will be provided with a new way to\nvisualize and to identify the potential gain or loss of energy for the building as a whole and for each of its associated components.\nFurthermore, designers will be able to detect and evaluate the sustainability of the proposed buildings based on Leadership in\nEnergy and Environmental Design (LEED) rating system. An actual building project will be used to illustrate the workability of the\nproposed methodology.
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