Abstract
This paper presents the flexural design way of breakwaters by means of reliability based design method. By using the probability distributions of design parameters such as wave force, deadweight, material strength and so on, distribution of safety indices against ultimate flexural failure of breakwaters designed with conventional design method has been clarified. Target safety level has been determined in terms of comparison of life cost of breakwaters for external safety and internal safety. Code calibration has been carried out and safety factors for level 1 reliability design method have been proposed.
