THE INFLUENCE OF A CROWN WALL ON WAVE OVERTOPPING OVER BREAKWATERS

This paper investigates the influence of a crown wall on wave overtopping rubble mound breakwaters. Existing data is used to modify EurOtop formula updated by Eldrup et al. (2022) cover wall. The effect raising above armour crest (elevated wall) or lowering below (lowered investigated. A at level considered as reference case. By increasing elevation either wall, reduced and them, increases. height, elevated lowered compared crest, not accurately in present design guidelines thus corrections are suggested. For an modified width has been defined, better describe presence front effective freeboard might be taken average freeboards. improvement existing methods significant, especially for breakwaters with large proposed modifications Manual increase range applicability respect configuration.