Definition 



Dimension 



Example Units 



Metric 



Ratio of windspeed to wind stress 

 factor (Fig. 3-19) 



Horizontal component of reaction 

 force 



Fractional reduction at the sea- 

 ward edge of the fetch segment 

 (eq. 3-51) 



Periodic beach nourishment-to- 

 erosion ratio (eq. 5-3) 



Ratio of overwater to overland 

 windspeed as a function of over- 

 land windspeed (Fig. 3-15) 



Maximum dynamic component of 

 breaking or broken wave on wall 

 (eq. 7-86) 



Reduced maximum dynamic component 

 on wall of height lower than wave 

 crest (eq. 7-91) 



Component of R normal to actual 

 wall (Fig. 7-106) 



Hydrostatic component of breaking 

 or broken wave on wall (eq. 7-89) 

 #Wave runup of significant wave 



Amplification ratio (eq. 3-27) 



Total breaking or broken wave 

 force on wall per unit wall 

 length (includes dynamic and 

 hydrostatic components) 

 (eq. 7-89) 



Vertical component of reaction 

 force 



Individual hydraulic radii of n 

 sections of an inlet channel 

 (eq. 4-69) 



Total rubble layer thickness 



# Radial distance from storm 



(hurricane) center to any 



specified point in storm 



system 



• Roughness and porosity correc- 

 tion factor (eq. 7-7) 



• Average armor layer thichness 

 (eq. 7-121) 



• Moment a rm 



Armor layer thickness (rubble 

 structure) 



Reduction factor for Corce on 

 wall of height lower than 

 clapotis crest (eq. 7-78) 



Reduction factor for moment on 

 wall of height lower than 

 clapotic crest (eq. 7-80) 



• Reduction factor for maximum 

 dynamic component of force when 

 breaking wave height is higher 

 than wall height (eq. 7-81) 



F/L 



F/L 



F/L 

 F/L 



L 

 L 



kN/m 



N/m of wall 



N/m of wall 

 kN/m 



English 



lb/ft 



lb/ft of wall 



lb/ft of wall 

 lb/ft of wall 



lb/ft of wall 

 ft 



lb/ft of wall 

 lb/ft 



ft 



ft 



ft 

 ft 



ft 



(Continued) 



B13 



