Question

In a clayey soil having $100 \text{ kN/m}^2$ as unit cohesion and $15 \text{ kN/m}^3$ as unit weight, an excavation is made with a vertical face. Taking Taylor's stability number as 0.3, what is the maximum depth of excavation so that the vertical face remains stable?

• A. $22.22 \text{ m}$
• B. $7.41 \text{ m}$
• C. $11.11 \text{ m}$
• D. $44.44 \text{ m}$

Hint:

Taylor's stability number is dimensionless. Always ensure your units for $C$ ($\text{kN/m}^2$) and $\gamma \times H$ ($\text{kN/m}^3 \times \text{m}$) match!

Answer 1

The Correct Option is A