USDA Forest Service 

 Research Paper INT-149 

 April 1974 



FAILURE CONDITIONS IN 

 INFINITE SLOPES AND 

 THE RESULTING 

 SOIL PRESSURES 



William S.Hartsog and 

 Glen L.Martin 



INTERMOUNTAIN FOREST AND RANGE EXPERIMENT STATION 



Forest Service 

 U. S. Department of Agriculture 

 Ogden, Utah 84401 

 Robert W. Harris, Director 



