Question

Figure given below shows a smooth vertical gravity retaining wall with cohesionless soil backfill having an angle of internal friction $\varphi$. In the graphical representation of Rankine's active earth pressure for the retaining wall shown in figure, length OP represents

• A. vertical stress at the base
• B. vertical stress at a height H/3 from the base
• C. lateral earth pressure at the base
• D. lateral earth pressure at a height H/3 from the base

Answer 1

The correct option is A vertical stress at the base


OA- represents vertical stress ${\sigma }_z$

OB - represents active EP = Numerically equal to OB'

In case of passive EP

OB' - represents ${\sigma }_z$

OA' - represents passive EP

= Numerically equal to OA