Question

The retaining wall of height 6 m moves towards right. The thrust on the wall per meter length of retaining wall (upto 2 decimal places) is in kN

• A. 612 kN
• B. 479 kN
• C. 832 kN
• D. 1134 kN

Answer 1

The correct option is C 832 kN

Since the wall moves toward soil, passive pressure will be generated

$P_P=K_P\gamma z+2C\sqrt{K_P}$

$K_P=\frac{1+\sin 20}{1-\sin 20}=2.04$

At top of retaining wall,

$p_p=2.04\times 18\times 0+2\times 10\sqrt{2.04}=28.566kN/m^2$

At bottom of retaining wall,

$p_p=2.04\times 18\times 6+28.566=248.89kN/m^2$



Thrust

$=[\frac{1}{2}\times 6\times (248.89+28.566\left)\right]$
= 832.368 kN

= 832.37 kN