Wave Ray 



rtical Wall 



Unit Length along Incident Wave Crest 



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

 Perpendicular to Direction of Wave Advance 



Rn= Component of R Normal to Actual Wall. Rp = R sin d 



W = Length Along Wall Affected by a Unit Length of Wove 



Crest. W= I/sin cr 



r' = Dynamic Force Per Unit Length of Wall 



R = 



R, 



R sin a 



W l/sincr 



R' = R sin^ cf 



= R sin^cf 



Figure 7-81, Effect of Angle of Wave Approach--Plan View 



7-165 



