Table 1 

 S e a wa 11 Revetment Configurations and Coefficients 



Study 



Configuration 



No.* 



RP-1 



Description 



Seawall with no fronting 

 revetment 



Overtopping 



Coefficients 



Q (cfs/ft) C. 



o 1 



76.55 



■14.08 



Hydraulic 



Rank 



Parameter 



A (cfs/ft) 

 _9 



0.0797 



RP-2 



RP-4 



RP-7 



RP-8 



CH-1 



CH-2 



CH-3 



Seawall fronted by a standard 

 riprap revetment 



Seawall fronted by a wide 

 berm, absorber revetment 



Seawall fronted by a wide 

 berm, absorber revetment, 

 cap on wall 



Seawall fronted by a wide 

 berm, absorber revetment, 

 double cap on wall 



Severely recurved wall with 

 extensive toe protection 



30.54 -13.43 0.0404 



439.22 -21.62 0.0310 



305.82 -23.07 



93.04 



394.62 



-22.15 



-20.68 



0.0131 



0.0055 



0.0386 



Moderately recurved wall with 93.25 -14.75 0.0757 

 extensive toe protection 



Vertical wall with extensive 8.80 -6.33 0.2078 

 toe protection 



* RP indicates Roughans Point seawall (Ahrens , Heimbaugh, and Davidson 1986) 

 CH indicates Cape Hatteras seawall (Grace and Carver 1985) . 



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