EVALUATION OF MAINTENANCE STRATEGIES BY INFINITE HORIZON LIFE-CYCLE COSTS

Abstract

Evaluation of life-cycle cost (LCC) is essential for efficient management of civil infrastructure. Because civil infrastructure has substantially longer service life than that of industrial product, and requires replacement due to its involvement with public interest, conventional LCC evaluation method developed in engineering economy is not directly applicable. To reflect these characteristics of civil infrastructure, infinite-horizon LCC is formulated and applied to evaluation of various maintenance strategies based on available past data. The proposed method is found to yield average cost method which widely used for LCC analysis civil infrastructure and have the capacity to assess the effect of routine and preventive maintenance.