200i 



200 



- 



80 



60 



140 



J 20 



z 

 o 



£100 



o 

 o 



80 



60 



40 



20 



A = .__.—« 



C = 

 D = 

 E = 

 F = 

 - F6= 

 6 = 



H = H M ftf 



10 



20 30 40 50 60 



CLAY-SIZE FRACTION (<2m), % 



70 



FIGURE 13. RELATION OF COHESION TO CLAY -SIZE FRACTION. SAMPLE 

 VALUES FALL WITHIN THE LIMIT LINES FOR EACH AREA SHOWN 



40 



