Table 14. Coefficients of Passive*Lateral Earth Pressure on 



Deadweight Cutting Edge (after Tschebotarioff , 1962) 



* (deg) 10 12.5 15 17.5 20 25 30 35 40 

 $ (rad) 0.17 0.22 0.26 0.30 0.35 0.44 0.52 0.'61 0.70 

 Kp 1.56 1.76 1.98 2.25 2.59 3.46 4.78 6.88 10.38 



*Assumptions: a. cutting edge wall is vertical 



b. soil surface is horizontal 



c. soil is non-cohesive, s = 



d. angle of wall friction, 6, = h 



74 



