Abstract
The conventional selection of construction method is focused on construction cost with the allowable safety factor. However, performance of the structure should be evaluated with an adequate method. In this study, to evaluate the performance of earth slopes with and without reinforcement, a life cycle cost was calculated on the seismic condition. For the calculation of the life cycle cost, a limit state exceedance probability is essential, which was obtained by the first-order reliability method. Construction and reconstruction costs were estimated from the actual construction data. In the results, the life cycle cost of the earth slopes with reinforcement was lower than that of the earth slopes without reinforcement.
