CETA 79-7 



Definition and Use of the Phi Grade Scale 



by 

 R.D. Hobson 



COASTAL ENGINEERING TECHNICAL AID NO. 79-7 

 NOVEMBER 1979 



Approved for public release; 

 distribution unlimited. 



330 



U.S. ARMY, CORPS OF ENGINEERS 



COASTAL ENGINEERING 

 RESEARCH CENTER 



Kingman Building 

 Fort Belvoir, Va. 22060 



