Reference Pile 



Direction of Wave Travel 



Figure 7-59. Definition Sketch - Calculation of Wave Forces on a Group 

 of Piles that are Structurally Connected 



Using tables (Skjelbreia, et al., 1960, and Dean, 1973), it is possi- 

 ble to calculate the total horizontal force F(x) and moment around the 

 mudline M(x) as a function of distance from the wave crest x. By- 

 choosing the location of the reference pile at a certain position x = x^. 

 relative to the design wave crest the total force, or moment around the 

 mudline, is obtained by summation. 



N-1 , 

 Toted n = ^ 



(7-51) 



where 



M 



Toted 



N-1 



(7-52) 



N = total number of piles in the group , 



-o = 0, 



X = from Equation 7-49 , 



x = location of reference pile relative to wave crest . 



Repeating this procedure for various choices of x^ it is possible 

 to determine the maximum horizontal force and moment around the mudline 

 for the pile group. 



7-115 



