GENERALIZATION OF THE FORMULA FOR CALCULATION OF 

 ROCK FILL DIKES AND VERIFICATION OF ITS COEFFICIENTS 



by 



Ramon Iribarren Cavanilles 



with the collaboration of 



Casto No galas y Olano 



Highway Engineers 



Published in the Review of Public Works, May 1950, 

 Madrid, Spain, as Generalizacion de la formula 

 para el calculo de los diques de escollera y 

 comprobacion de sus coeficientes, por Ramon 

 Iribarren Cavanilles con la colaboracion de Casto 

 No gales y Olano, Ingenieros de Caminos; publicado 

 en la Revista de Obras Publicas de Mayo de 1950, 

 Madrid, Espana. 



FOREWORD 



The following translation is related to an article 

 by the same author which appeared in translation in the 

 Bulletin of the Beach Erosion Board, Vol. 3? No. 1, 

 January 194-9. It is published at this time for the 

 benefit of American engineers concerned with breakwater, 

 jetty, and groin design and as a means of acquainting 

 them with Mr. Iribarren' s latest thinking on the subject, 

 The editors of the Bulletin wish to acknowledge the 

 kindness of Mr. R. 0. Eaton, through whose efforts the 

 translation was made available. 



The opinions expressed are those of the author and 

 not necessarily those of the Beach Erosion Board. 



In the booklet Una formula para el calculo de los diques de 

 escollera (A Formula for the Calculation of Rock-fill Dikes), 

 published July 1938* there was determined the expression 



P = N A^ d 



(cosoc - sincx)JS (d-l)3 



where 



= weight of the individual stones or blocks in kilograms, 



= 15 for dikes of natural rock fill, 



= 19 for dikes of artificial block fill, 



= 2h = total height of the wave that breaks on the dijce, 



measured in meters 



-^-Translated and published in bhe January 1949 Bulletin of the 

 Beach Erosion Board, Office, Chief of Engineers, Department of the 

 Army. The coefficient K of that booklet is denoted by N in this 

 one, to avoid confusion with K = cothir H, and similarly, the angle a 

 we here denote a . Translation was L made by D. W. Hullinghorst. 



