(a) A reinforced concrete foundation, of dimensions $18\text{ m} \tim…

Question

(a) A reinforced concrete foundation, of dimensions $18\text{ m} \times 36\text{ m}$, exerts a uniform pressure of $180\text{ kN/m}^2$ on a soil mass, with E-value $45\text{ MN/m}^2$. Determine the value of immediate settlement under the foundation.

(b) What is 'active zone' in soil ? Explain it with reference to the pressure bulb concept.