Therefore 



"° = r^ = r^ = '■'" '' ■ 



To determine the runup, calculate 



H' 



6.74 



= 0.0033 , 



gT^ 32.2 (8)2 

 and using the depth at the structure toe, 

 a^ = 10 ft, 



^s 10 



-— = = 1.48. 



K 6.74 



Interpolating between Figures 7-10 and 7-11, for a 1 on 2.5 slope. 



The runup, unaorreoted for scale effects, is 

 R = 2.7 (h;). 

 R - 2.7 (6.70 = 18.2 ft . 



The scale correction factor k can be found from Figure 7-13. 

 The slope in terms of m = tan 6 is 



tan (9 = = 0.40 . 



2.5 



The corresponding correction factor for a wave height, 

 n'o = 6.74 ft. is, 



k = 1.17 . 

 Therefore, the corrected runup is 



R - 1.17(18.2) = 21.3 ft . 

 7-32 



