Abstract
The conventional selection of construction method is focused on construction cost with the allowable safety factor. However, a performance of 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 after the evaluation of damage cost functioned by a seismic deformation. For the calculation of the life cycle cost, construction 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.