B 

 h 



= 2.0 m (6.56 ft) 

 = 2.5 m (8.2 ft) 

 = 2.0 m (6.56 ft) 



F = h-dg = 0.5 m (1.64 ft) 

 Hg = 1.0 m (3.28 ft) 

 T„ = 10.0 s 



SOLUTION ; Irregular wave runup on a 1:1.5 smooth slope was tested for scale 

 models from Ahrens (1981a), who found the relative runup to have the 

 following empirical relation to the dimensionless parameter (h /gT^j: 



rf- = 1.38 + 318 

 rl 

 S 



H 



ST. 



- 19700 



H 



gT 



For this example 



SO 



gT 



= 0.00102 



Therefore 



-^ = 1.38 + 318 (0.00102) - 19700 (0.00102) 

 n 



2 = 1.68 





0.5 

 1.68 



= 0.30 



From Figure 7-39 the transmission by overtopping coefficient for F/R = 0.3 

 and B/h = 2.0/2.5 = 0.8 is ^ 



So =0-295 

 so the transmitted significant wave height would be 



7-72 



