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CASE 8 LIFE CYCLE COST ANALYSIS The Building and Constructions Infrastructure Division of ETH Zurich thinks about its buildings' sustainability holistically. Hence, the ‘Triple Bottom Line’ – incorporating all three dimensions of environment, society, and economy – must be addressed during planning, construction, and operation of the buildings.

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 Life Cycle Cost (LCC) Analysis is a method for assessing the total cost of ownership of a building, and LCC is also an integral part of some certification schemes. LCC should not be confused with Life Cycle Assessments (LCA). LCAs are used to evaluate the environmental costs associated with a product, process, structure, or activity. They identify energy and materials used, as well as wastes released to the environment.

4-5 DIFFICULTY OF IMPLEMENTATION

LCC is a cost-based analysis tool; it aims to identify the most costefficient building design and construction strategies over the life of a building. ETH Zurich developed the LCC tool as a quality assurance tool. It conducts economic analyses by evaluating the relative cost-effectiveness of alternative buildings and buildingrelated systems or components. LCC takes into account all the costs of acquiring, owning, and disposing of a building or building system. Research buildings have to be very flexible during their life cycle, as they have to meet the requirements of an ever-changing research focus. LCC is based upon assumptions that multiple building-design options can meet programmatic needs and achieve acceptable performance, and that these options have differing initial costs, operating costs, maintenance costs, and possibly different life cycles. By considering all the costs associated with all aspects of building and maintaining a facility over its lifetime, planners are able to make more environmentally sound and cost effective decisions from the outset.

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IARU - Green Guide for Universities – pathways towards sustainability