in Table 1 are identical to those given by equations (164), (167), 

 and (169). The numerical example may therefore be consulted for the 

 details of the computational aspects involved in the determination of 

 the transmission and reflection coefficient of the equivalent breakwater, 

 T and R , subject to incident waves of amplitude a . 



The important parameters involved in the use of Figures 2 and 3 

 for this purpose were obtained in Section II 



2tt 



n k I =0.435 (■, , ^. 

 o e U4.56 



-) 2.52 = 0.47 



(170) 



and the porosity correction factor (eq. 28), 



S = (-i^)^ = f O-435 2 



0.45' 



'0.45 



(171) 



The computations corresponding to the equivalent incident wave 

 amplitudes, a-r, determined from the results obtained in Table 6 are 



summarized in Table 7. 



Table 7. Summary of calculations of reflection and transmission 



coefficients of equivalent rectangular breakwater based on 



AH /AH„ - 1. 

 e T 



Run 

 No. 



H. 



1 



feet 



^11 

 (Table 6) 



RjjH./2 

 feet 



f 

 (eq. 57) 



f/s. 



(Fig. 2) 



(Fig. 3) 



428 



0.0355 



0.86 



0.015 



1.92 



2.1 



0.30 



0.66 



429 



0.0365 



0.86 



0.016 



1.97 



2.1 



0.30 



0.67 



472 



0.0405 



0.86 



0.0175 



2.06 



2.2 



0.29 



0.67 



430 



0.0474 



0.86 



0.020 



2.16 



2.3 



0.28 



0.68 



427 



0.056 



0.85 



0.024 



2.34 



2.5 



0.27 



0.68 



471 



0.075 



0.85 



0.032 



2.62 



2.8 



0.24 



0.70 



470 



0.115 



0.85 



0.049 



3.17 



3.4 



0.20 



0.72 



469 



0.162 



0.84 



0.069 



3.70 



4.0 



0.17 



0.74 



465 



0.202 



0.84 



0.085 



4.10 



4.4 



0.15 



0.75 



466 



0.260 



0.84 



0.109 



4.63 



5.0 



0.13 



0.76 



467 



0.310 



0.84 



0.130 



5.02 



5.4 



0.12 



0.77 



468 



0.374 



0.84 



0.157 



5.50 



5.9 



O.Il 



0.77 



93 



