3.0 



2.5 - 



2.0 - 



1.5 L 



1.0- 



0.5 - 





- 1 



• 



• 



I 1 1 1 



^^ OCR = 32 



1 









• ^^^^^ 





- 



•^ 



• 



' — "•--— -J^ 



^ 



— 



"■ • 



• 



1 



8 



- 



4 



— ' — *" 2 



— 



' *~ 1 





^~~_ 



1 



1 1 1 1 



1 



10 



20 



30 40 50 

 Plasticity Index 



60 



70 



80 



Figure 4. K as function of overconsolidation ratio and plasticity 

 index. Overconsolidation ratio - OCR (From Brooker and 

 Ireland (1965)). 



18 



