Symbol 



Definition 



Dimension 



Example Unit 



Total energy in one wavelength per unit crest 

 width 



•Crest elevation of structure above MLW or 

 other datum plane 



Total average wave energy per unit surface area; 

 specific energy; energy density 



(E)a Average wave energy per unit water surface area 



for several waves 



Longshore component of wave energy 

 (eq. 4-39) 



E^ Kinetic energy in one wavelength per unit crest 



width 



E(k) Complete elliptic integral of second kind 



En Deepwater wave energy 



En Potential energy in one wavelength per unit 



crest width 



Fetch length 

 •Total horizontal force acting about mudline 



on pile at given instant 

 • Nonbreaking, nonovertopping wave force on 



wall extending full water depth 



(Reduced) Force on overtopped wall which 

 extends full water depth (eq. 7-69) 



(Reduced) Force on wall resting on rubble foun- 

 dation (eq. 7-73) 



Total horizontal force per unit length of wall 

 from nonbreaking wave crest 



Fj) Total horizontal drag force on a pile at given 



instant 



Fj^jf, Maximum value of Fq for given wave 



Fe Effective fetch length due to limited width 



Fe Effective fetch length, unrestricted body of 



water 



Fg Equivalent effective fetch length (Table 34) 



Fi Total horizontal inertial force on pile at given 



instant 



LF/L 

 L 



LF/L^ 



LF/L2 



LF/LT 



LF/L 



LF/L 



LF/L 

 L 

 F 

 F/L 



F/L 



F/L 



F/L 



F 

 F 

 L 



L 

 L 



ft.-lbs./ft. crest wddth 

 feet 



ft.-lbs./ft.2 



ft.-lbs./ft? 



ft.-lbs./ft./day 



ft.-lbs./ft. crest width 



ft.-lbs./ft. crest width 



ft.-lbs./ft. crest vndth 

 nautical mile 



pounds 

 Ibs./ft. of wall 



Ibs./ft. of wall 



Ibs./ft. of wall 



Ibs./ft. of wall 



pounds 



pounds 



miles 



nautical mile 

 nautical mile 



pounds 



B-3 



