

Bole Comeau, Quebec, Canada (August 1962) 



El 26 

 4" scupper-- 



60'- O' 



'— Steel grating air relief twte 





, t Z4'»Ai 



. I ~u Compacted crushed slane T> s'.fi"' 



„ , 2- Max eize ^,_ ^,250 



Wove Chamber 



TT .5'-IOi K 7- 4" — t- 7-4 - H 



c^-© 





4" *Alr relief tioles 



Quorry 

 Run Fill 



A/ ^'esti nwter 



pipe 



- 4 • Drain holes 



•5^ 



( 4 Holes 



Xi- 



l-2'-0"| 



3'Cft- 26'- 4 i 



Figure 6-71. Perforated Caisson Breakwater 



6-95 



