************** EXAMPLE PROBLEM *************** 



GIVEN ; A design wave with height H = 10 ft. and period T = 10 sec. acts 

 on a vertical circular pile with a diameter D = 1 £t. in depth d = 15 ft. 

 Assume that C^^ = 2.0 and Cp = 0.7. Selection of C^^ and Cjj is discussed 

 in Section 7.315. 



FIND : The maximum total horizontal force and the maximum total moment 

 around the mudline of the pile. 



SOLUTION : Calculate, 



d 15 



— : = = 0.00466. 



gT^ (32.2) (10)2 



and enter Figure 7-47 to the breaking limit curve and read, 



— = 0.00357. 

 Therefore, 



Hy = 0.00357 gT^ = 0.00357 (32.2) (102) = 115 fj_ 



and 



H 10 



= = 0.87. 



Hy 11.5 



From Figures 7-43 and 7-44, using d/gT^ = 0.00466 and H = 0.87 Hj, , 

 interpolating between curves H = 1^ and H = 3/4 H^ to find, K^^ and K^: 

 ^im = 0-38, 



^Dm - 0.70. 

 From Equation 7-30: 





im ' 



F.^ - (2) (2) (32.2) ^ (10) (0.38) = 384 lbs. 



and from Equation 7-31: 



1 



^Dm ^ (0.7) (0.5) (2) (32.2) (1) (10)2 (q 7) = ^ 530 lbs. 

 7-90 



