0.20 



0.18 



0.16 



0.14 



» 0.12 



14 



2 4 6 8 10 12 



Weight of Tetrapods (tons) 



Figure 8-30. Volume of First Underlayer per 100 feet of Structure as a Function of 

 Tetrapod Weight, Concrete Unit Weight and Structure Slope 



16 



8-82 



