Wave Ray 



Vertical Wall 



Unit Length along Incident Wave Crest 



R = Dynamic Force Per Unit Length of Wail if Wall were 

 Perpendicular to Direction of Wave Advance 



Rn= Component of R Normal to Actual Wall. Rn= R sin cf 



W = Lengtti Along Wall Affected by a Unit Length of Wave 



Crest. W= I/sin (/ 



r' = Dynamic Force Per Unit Length of Wall 



R'- 



R sin a 



W '/sincr 



R' = R sin^ a 



R sin^ a 



Figure 7-106. Effect of angle of wave approach: plan view. 



7-199 



