40 



30 



2 20 



10 



, ^ 1/4 diameter, 

 10 psi _ _ A— 



skirt depth = 1/8 diameter, 



10 psi preconsolidation pressure 



D 



— D — — — ^ -o-f^ 



^' 



^ 



^" 



.o * 





Footing Diameter (inches) 



12 



Figure 10. Effect of skirt depth/diameter ratio, preconsolidation pressure, 

 and footing diameter upon lateral capacity. Seal Beach silt. 



14 



