







Table 5. 



Wave transmission by 



sandbag .bre 



akwaters 











Crest 

 elevation 



Crest 



width 



Wave 

 condition 



Period 

 (s) 



»i 



H* 



Ht/Hi 



A 



Wave setup 



(ft) 1 (■-) 



(ft) 



(m) 



(ft)| (m) 



(ft)| (m) 



(ft) 



(m) 



1 



Test I 1 



2.9 



0.88 



7.1 



2.16 

































a 



6 



4.0 



1.22 



4.0 



1.22 



1.00 







None 







2.7 



0.82 



7.5 



2.29 

































b 



10 



3.9 



1.19 



3.9 



1.19 



1.00 







or 







2.6 



0.79 



8.2 



2.50 



































Tank 



drained and refilled 













2.3 



0.70 



8.0 



2.44 

































c 



6 



5.8 



1.77 



5.9 



1.80 



1.02 



-0.02 



Negligible 







2.2 



0.67 



7.4 



2.26 

































d 



10 



5.7 



1.74 



5.8 



1.77 



1.02 



-0.02 









2.2 



0.67 



7.6 



2.32 

























Test II 1 



6.9 



2.10 



7.0 



2.13 

































a 



6 



4.0 



1.22 



4.4 



1.34 



1.10 



-0.10 



None 







5.7 



1.74 



12.3 



3.75 

































b 



10 



3.9 



1.19 



4.3 



1.31 



1.10 



-0.10 



or 







5.7 



1.74 



12.3 



3.75 

































c 



6 



5.8 



1.77 



5.5 



1.68 



0.95 



0.05 



Negligible 







5.2 



1.58 



13.7 



4.18 

































d 



10 



5.7 



1.74 



5.2 



1.58 



0.91 



0.09 









5.2 



1.58 



13.4 



4.08 

























* Test III 1 



12.0 



3.66 



14.1 



4.30 

































a 



6 



4.0 



1.22 



1.1 



0.34 



0.28 



0.72 



1.0 



0.30 





10.9 



3.32 



23.5 



7.16 

































a' 



6 



4.0 



1.22 



2.0 



0.61 



0.50 



0.50 



0.6 



0.18 





10.8 



3.29 



25.2 



7.68 

































b 



10 



3.9 



1.19 



2.2 



0.67 



0.56 



0.44 



0.5 



0.15 





10.8 



3.29 



24.4 



7.44 

































c 



6 



5.8 



1.77 



2.5 



0.76 



0.43 



0.57 



1.0 



0.30 





10.1 



3.08 



26.0 



7.92 

































d 



10 



5.7 



1.74 



3.0 



0.92 



0.53 



0.47 



0.6 



0.18 





9.9 



3.02 



25.6 



7.80 

























Test IV 1 



16.0 



4.88 



13.8 



4.21 

































a 



6 



4.0 



1.22 



0.2 



0.06 



0.05 



0.95 



O.I to 0.3 



0.03 to 



0.09 



15.9 



4.85 



8.6 



2.62 

































b 



10 



3.9 



1.19 



0.4 



0.12 



0.1 



0.9 



0.1 



0.03 





15.9 



4.85 



8.7 



2.65 

































c 



6 



5.8 



1.77 



0.9 



0.27 



0.2 



0.8 



1.5 



0.46 





14.2 



4.33 



9.0 



2.74 

























^After loss of top layer of bags. 



65 



