On the Economic Estimation of Life Cycle Cost of Structures

Abstract

Life cycle cost of structure is optimized based on the principles of expected total cost minimum. The optimum second moment safety index is derived from that principle and the expected minimum cost of prospective structure is estimated by proposed method. Structures are going to deteriorate during the service term. The type of deterioration seems generally neither established clearly nor evaluated exactly. In this study, therefore, fractal type deterioration function is applied to obtain the optimum safety index.