The inertia force on Member a is given by: 



C P^D' 



Du 

 Dt 



dS'. 



To determine Fj{d, S^), select the tabulated value of the dimensionless inertia force, 

 FUd,S), for a relative depth S^/h = 0.5 from Table VI and multiply the dimensionless 

 force by: 



Cj^pTiD^ (H/TMh 



274.9 lbs 

 0.2749 kips 



The total force will be determined by summation of Fj{6, S^) and Fjy{6,S^) at each phase 

 angle, 6. The force calculations are summarized in Table G and the forces are plotted in 

 Figure 31. 



TABLE G 

 Horizontal Wave Forces on Member "a" 



e(°) 







10 



20 



30 



50 



75 



100 



130 



180 



^d' 



36.31 



29.00 



14.60 



4.30 



- 0.04 



-1.14 



-1.54 



-1.62 



-1.60 



F^(kips) 



23.56 



18.81 



9.47 



2.79 



- 0.03 



-0.74 



-1.00 



-1.05 



-1.04 



^l' 



0.0 



22.59 



36.36 



36.63 



17.25 



3.76 



0.67 



0.12 



0.0 



F^(kips) 



0.0 



6.21 



10.00 



10.07 



4.74 



1.03 



0.18 



0.03 



0.0 



F^(kips) 



23.56 



25.02 



19.47 



12.86 



4.71 



0.29 



-0.82 



-1.02 



-1.04 



Forces on Member "b" 



Next, consider the horizontal forces acting on the main support piling. In this case, the 

 forces are integrated from to h + t?(0). To determine Fjj{6), multiply the tabulated 



61 



