SYMBOLS AND DEFINITIONS 



a^^/k roughness term 



C group velocity (meters per second) 



D damage to the profile (cubic centimeters) 



D' dimensionless damage 



d water depth in flat part of tank (centimeters) 



dl5 equivalent diameter of the riprap stone; 15 percent of the total weight 

 of the armor gradation is contributed by stones of lesser weight 



(millimeters) 



d equivalent diameter of the filter stone; 85 percent of the total weight 

 of the filter gradation is contributed by stones of lesser weight 

 (millimeters) 



g acceleration due to gravity (9.81 meters per second) 



H incident wave height (centimeters) 



H wave height at the zero-damage level (centimeters) 



L wavelength (centimeters) 



L deepwater wavelength (feet) 



N stability number 



N stability number at the zero -damage level 

 z 



N stability number at the zero-damage level divided by the average of the 

 prototype stability numbers at the zero-damage level 



R^ Reynolds number with roughness term 



Rfj Reynolds number using wave height 



R2 runup at the zero-damage level 



S distance from wave blade to toe of embankment (meters) 



T wave period (seconds) 



W(j wave burst duration (seconds) 



WcQ median armor stone weight (kilograms); weight of stone where 50 percent 

 of the total weight of the armor gradation is contributed by stones of 

 lesser weight 



