TYPE 

 Apron 



SECTION 



Apron 



REMARKS 

 Apron will slough into Scour Hoi* if on* 

 develops, Revetment Integrity will remoin. 



Buried Toe 



Weighted Toe 



-Bockfill 



Weighted Toe 



Armor 

 Grovel Filter 



-Filter Cloth 



Filter Cloth encloses Gravel Bulb at Toe. 

 (Barrett, 1966) 



Weighted Toe 



Blocks 

 Large Rock or Concrete 

 in Bogs 



(Mohl, 1967) 



Flexible Mot 



-Scour Hole 



Mot could be Gabion or Filter Cloth 

 filled with Sand. 



Offshore Sill 



\n ^Accretk 

 v Bog or Rock Sill 



Sill Traps Sond which buries Revetment 

 -Revetment Toe. (Sivord, 1971) 



Beach Feed 



Sond or Gravel 

 Stockpile 



Stockpile feeds Toe to replace Toe 

 Scour Losses. 



Cutoff Won 



Antierosion Rings 



(SPM) 



Rings are Concrete Pipe Segments, 2 

 ft. to 4ft high with 4 ft. to 5 ft 

 Diameters! A row of Shore-parallel 

 Rings builds a perched Beoch. 

 (Portiond Cement Association, 1955) 



Figure 4. Revetment toe protection. 



I I 



