Riprap stability for deep water, shallow water and steep foreshores

摘要

An accurate comparison of the data of Thompson & Shuttler [1975], of Van der Meer [1988] and of Van Gent et al. [2003] shows that, in combination with the shallow water wave parameters H_(2%) and T_(m-1.0) there is no need to use different formulae for deep and shallow water. The effect of the foreshore can be incorporated by adding a correction factor based on the Iribarren number for the foreshore. This implies that formulae (8) and (9) can be used in all cases, provided the wave boundary data at the toe of the breakwater are determined very accurately.