A rectangular footing of $5\text{m} \times 2.5\text{m}$ size, carries…

Question

A rectangular footing of $5\text{m} \times 2.5\text{m}$ size, carries a uniformly load of intensity $160\text{ kN/m}^2$ and is located at a depth of $1.5\text{m}$ in a layer of clay of $6\text{m}$ thickness and having $E_u\text{ value} = 40,000\text{ kN/m}^2$. This clay layer is underlain by a second clay layer of $8\text{m}$ thickness and having $E_u = 70,000\text{ kN/m}^2$. A hard stratum lies below the second layer. Calculate the average immediate settlement under the footing.