h c ,h c = Armor crest level relative to seabed, after and before exposure to 

 waves 



H = Design wave height 



H b = Breaking wave height 



H { = Incident wave height 



H s = Significant wave height, average of highest one-third of the waves 



Hj = Average of highest 1 percent of all waves, m 1.67 H s 



H 5 = Average of highest 5 percent of all waves, « 1.37 H s 



H 10 = Average of highest 10 percent of all waves, « 1.27 H s 



H mo = Significant wave height based on spectrum 4\fm 



H t = Transmitted wave height 



H e = Deepwater wave height exceeded 12 hr/yr 



H = Wave height at breakwater gap 



I s = Beach response index 



Kj,K 2 = Empirical coefficients 



K D = Stability coefficient 



K r = Reflection coefficient of breakwater 



K t = H/Hj, wave transmission coefficient 



K t0 = Overtopping transmission coefficient 



K tt = Through transmission coefficient 



K T = Through transmission coefficient 



K T = Structure transmission value 



L = Wavelength at structure 



L = Gap distance between adjacent breakwater segments 



L = Local wave length calculated with T 



L = Breakwater segment length 



B2 



Appendix B Notation 



