(a) Explain ESWL and the concept in the determination of the equivale…

Question

(a) Explain ESWL and the concept in the determination of the equivalent wheel load.

(b) Calculate thickness of mat using triaxial method :

E-value of subgrade soil $= 90\text{ kg/cm}^2$

E-value of paving materials $= 900\text{ kg/cm}^2$

Wheel load $= 5100\text{ kg}$

Tyre pressure $= 7\text{ kg/cm}^2$

Traffic coefficient $= 1.25$

Saturation coefficient $= 0.8$