

































| | 









,u 



































Symbol 7 □ 

 Sand 1 2 

 Md 0.22 0.4 



S 1.2 1.5 





















































u 





















































































































































































































































































" 

















































" J 

















































u 





















































































































































































































































































































































01 



05 



1 G 



2 



5 





\ 





2 



3 



4 



5 



60 70 80 90 95 98 99 99.5 99 8 99 9 99 



Cumulative % Coarser Than 

 FIGURE 3 • SIZE FREQUENCY BY WEIGHT OF BED MATERIALS USED IN THE STUDY 



FIGURE 4 • SCHEMATIC DIAGRAM OF TEST SET-UP 

 45 



