(Hmo)t (ft) 



D 



12 s 









- + 



14 s 







+ * 



* 



16 S 





+ 



* + 



X 



18 s 





+ 

 * * 





- 



X X 



+ 



a 



*P< X 







~ 



i 



i i 



i i 



i 



12 



14 



16 



18 20 



(Hmo)i (ft) 



22 



24 



Figure 26. Wave transmission, Plan 5 



Overtopping 



46. Observations during tests showed that overtopping was essentially 

 the same for Plans 1-3. These plans had the same geometrical shape, and only 

 the stone sizes in the rehabilitation area differed. Overtopping was minor 

 with 13-ft incident waves for all wave periods. Moderate overtopping was 

 observed with 16-ft waves for all periods with occasional solid water going 

 over the structure with 16- and 18 -sec periods. Overtopping was heavy with 

 20- and 24- ft waves for all wave periods. 



47. The inclusion of a transition layer in Plan 5 resulted in a wider 

 crown, which reduced the amount of solid water overtopping the structure. 

 Overtopping was minor with 13-ft waves and minor to moderate with 16-ft waves 

 for all periods with Plan 5. Moderate overtopping occurred with 20-ft waves 

 with occasional solid water overtopping the structure. Overtopping was heavy 

 with 24- ft waves. 



34 



