4U 

 30- 







BORROW MATERIAL 













20- 









VI. 76 









A 



;(Ltit 



10- 











,_ 







(Ltit than 0.031mm) 



-3-2-1 I 2 3 4 8 6 



4 I 0.25 0.062mm 0.016mm 



M n :|.50 



S„=0.9I 



-3-2-10 1 2 3 4 5 6 



4 I 25 0.062 mm. 



Grain size 



1951 



Figure 11. Grain-size histograms for borrow and native sand composite 

 distributions, Virginia Beach, Virginia (modified from 

 Krumbein and James, 1965). 



37 



