W a = Weight of the individual armor unit 



x = Longshore coordinate (Chapter 3) 



x = Percentile of armor stone less than the given weight 

 (Chapter 4) 



X = Breakwater segment distance from original shoreline 



X = Erosion/accretion opposite gap, measured from original shoreline 



X s = Salient/tombolo length in on-offshore direction measured from 

 original shoreline 



X = Effective distance offshore 



v = Distance to structure from average shoreline 



a — Constant angle between either radius R 1 or R 2 and its tangent to the 

 curve 



/S = Predominant angle of wave approach 



tan(3 = Average bottom slope from the shoreline to the depth of 

 active longshore sand transport 



A = Relative density, pjp w - 1 



p a = Mass density of armor 



p w = Mass density of water 



% z = Surf similarity parameter 



= Angle between radii R 2 and R } (headland design) (Chapter 2) 



6 = Angle of structure slope measured from horizontal (Chapter 4) 



6 bs = Angle of breaking waves to local shoreline 



B4 



Appendix B Notation 



