M.W.S=+6 



El. 0.0 



FIGURE 148 - WAVE PRESSURE DIAGRAM 









1= intercept on groin of wave 









ot unit width 





c 

 o 





= 1 /sincxl 









P= component of wave force 







4 



(P) normal to groin. 



n 



7^> 



1 



^= component of wave force 



1 





i 



normal to groin per unit 

 length of groin 

 P= P sin£<- 





/<<. 





X 









Pn- Px/1 2 

 = Psin<?Csinc< =Psin ^ 



A / 







VA 



Unit width 



of wove opprooch. 



/ 



FIGURE 149 



- ANGLE 



OF WAVE APPROACH 



225 



