KEY WORDS AND CATEGORIES 



Beach Dynamics under Groin Influence 



Accretion 

 Artificial-fill 



Erosion 

 Scour 



Shoaling 

 Transport -normal 



Construction Data 



Const-problems 

 Const -procedure 



Economics 

 Maintenance 



Structural -design 



Construction and Survey Dates 



1800-1900 

 1900-1949 

 1950-1954 



1955-1959 

 1960-1964 



1965-1969 

 1970-1974 



Dimensions 



Geometric- shapes 

 High 



Long 

 Low 



Short 



Groin Types and Design 



Adjustable 

 Corner-groins 

 L- groins 

 Misc-plan 



Africa 



Alaska 



Asia 



Australia 



California 



Notched 



Termin::l 



Single 



T-groins 



Spur 



Z-groins 



System 





Location 





Central America 



N. Atlantic 



Europe 



N. Pacific 



Great Lakes 



S. Atlantic 



Hawaiian Islands 



Texas Gulf 



Materials 



Asphalt 



Concrete 



Misc-materials 



Piling 

 Rubble -mound 



Steel 

 Timber 



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