Sg = specific gravity of an individual stone relative to 

 the water in which the breakwater is constructed, 

 i.e., S^ = yjy^ 



Yw = specific weight of water, pcf 



Assuming a specific weight of seawater of 64.0 pcf and fresh water of 

 62.4 pcf, assuming a specific weight of 165 pcf for both model and proto- 

 type stone, and using a model scale of 1 :30, average weights of armor 

 stone used in the models correspond to average prototype weights of 

 672 lb and 336 lb for tests conducted with the 1991 profile and 1978 pro- 

 file, respectively. 



•57 



Chapter 5 Revere Dike Study 



