B=40cm 



hc= 66 cm 







0.5 



1.0 m 



BW4 



Figure A-5. Breakwater 4 cross section. 

 BW4 is similar to BW3, except with a 1 on 2.6 front-face slope. 



0.5 



B:40cm 



he = 66 cm 



54-cm-High Plate 



1.0 m 



BW4W 



Figure A-6. Breakwater 4W cross section. 



BW4W is similar to BW4 , but includes a 54-centimeter-high impermeable plai 

 in the center of the structure. 



70 



