Symbol 



H, 



H. 



H 



V3 



H, 



H 



10 



h' 



Ho 



K 



Definition 



Wave height transmitted past obstacle 



Wave height at wall 



Significant wave height; Hj 



Average height of highest 1 percent of all waves 

 for given time period 



Average height of highest 10 percent of all 

 waves for given time period 



Range of tide 



• Height of retaining wall 



• Height of backfill at wall if lower than wall 



• Structure height, toe to crest 



• Vertical distance from dune base or berm 

 crest to depth of seaward limit of significant 

 longshore transport (Figure 4-44) 



Broken wave height above ground surface at 

 structure toe landward of SWL 



Height of broken wave above SWL 



Height of clapotis orbit center above SWL 



Submerged weight of longshore transport 



Angle of backfill surface from horizontal 



Subscript for discrete points in space (eq. 3-65) 



• Subscript for an incident wave characteristic 



• Subscript dummy variable for use in sedi- 

 ment budget analysis 



Distance between bottom contours 

 (Figure 2-21) 



Dummy variable 



Subscript dummy variable 



Pressure response factor at bottom (eq. 2-31) 



• Bottom friction coefficient (eq. 3-57) 



• Constant such as 6.5882 (eq. 3-23) 



• Constant for Rankine vortex model of hurri- 

 cane wind field (eq. 3-27) 



• Coefficient dependent on breaker height-to- 

 depth ratio and ratio of trough depression to 

 breaker height (eq. 4-18) 



Dimension 



L 



L 

 L 



Example Unit 



L 

 L 

 L 

 L 



L 

 L 



L 

 F/T 



feet 

 feet 

 feet 



feet 



feet 



feet 

 feet 

 feet 

 feet 



feet 



feet 

 feet 

 feet 



Ibs./yr. 



degrees 



feet 



second' 



B-6 



