Definition 



Dimension 



Example Units 



Metric 



English 



Total average wave energy per 

 unit surface area; specific 

 energy; energy density 



Average wave energy per unit 

 water surface area for several 



Total average wave energy per 

 unit surface area in deep water 



Kinetic energy in one wavelength 

 per unit crest width 



Complete elliptic integral of 

 second kind 



Deepwater wave energy 



Potential energy in one wave- 

 length per unit crest width 



Continuous energy spectrum 

 (eq. 3-17) 



Energy density in the j compo- 

 nent of the energy spectrum 

 (eq. 3-18) 



Fetch length 



• Total horizontal force acting 

 about mud line on pile at a 

 given instant 



9 Nonbreaking, nonovertopping 

 wave force on wall extending 

 the full water depth 



• Freeboard 



(Reduced) force on overtopped 

 wall which extends full water 

 depth (eq. 7-78) 



(Reduced) force on wall resting 

 on rubble foundation (eq. 7-82) 



Adjusted fetch length 



Total horizontal force per unit 

 length of wall from nonbreaking 

 wave crest 



Total horizontal drag force on a 

 pile at a given instant 



Maximum value of F for a given 

 wave 



Effective fetch length due to 



limited width 



• Total horizontal earth force 



Effective fetch length on an 

 unrestricted body of water 



Horizontal forces on quay wall 

 caisson to initiate sliding 



LF/L 



LF/L^ 



2 

 LF/L 



LF/L 



LF/L 

 LF/L 



LF/L'' 

 I 



F/L 

 L 



F/L 



N-m/m 



N-m/m 



N-m/n 



N-m/m of crest 

 width 



N-m/m of crest 

 width 



N-m/m of crest 

 width 



N-m/m 



N/m of wall 



N/m of wall 



ft-lb/ft'^ 



ft-lb/ft^ 



ft-lb/ft 



ft-lb/ft of crest 

 width 



ft-lb/ft of crest 

 width 



ft-lb/ft of crest 

 width 



ft 



ft-lb/ft^ 

 ft 



lb 



lb/ft of wall 

 ft 



lb/ft of wall 



lb/ft of wall 

 ft 



lb/ft of wall 



lb 



lb 



ft 

 lb 



ft 



lb 



(Continued) 

 B3 



