Author(s): Mahrez Ben Belfadhel; Guy Lefebvre; Karol Rohan
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Abstract: The Hudson formula is probably one of the most used stability formula fordesigning riprap protection against wind-wave action due mainly to its simplicity.There are however,uncertainties in the choice of the stability coefficient,KRR,to be used in the formula,reflecting ambiguities surrounding the tolerated degreeof damage associated with a given KRR·As well,the Hudson formula doesn't expli-citly include damage evolution as a function of wave height which,in fact,re-presents an important tool when evaluating the performance of existing riprap.It should be noted,in addition,that independently of the stability formula,thestability criteria or degree of damage such as zero-damage,damage start-up,5号damage,tolerable damage,etc.,are not clearly or universally defined.
Year: 1993