REVISED RECESSION OF RESHAPING BERM BREAKWATERS

Abstract

In this paper data has been collected on berm breakwater stability from several laboratories. The total database contains more than 1500 model test data on berm recession. The data has been compared to five existing recession formulae and most of the existing recession formulae provide good estimates within the validation area of the formula. The Lykke Andersen formula has the largest application area and provides reliable results in most cases. A slightly modified version of that formula is suggested and it is shown that the new formula has a very large application area and provides less uncertainty for partly and fully reshaping structures than other methods to assess the stability.