Module 3: Pavement Design

Lecture 21: Pavement materials:Soil

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Solutions

1. The load value on standard crushed stone for 2.5mm penetration in CBR test is
   1. 1370kg$\surd$
   2. 1730 kg
   3. 2055kg
   4. 1500kg
2. Modulus of subgrade reaction is
   1. $K=\frac{P}{2.15}kg/cm^2/cm$
   2. $K=\frac{P}{0.125}kg/cm^2/cm$$\surd$

   3. $K=\frac{P^2}{2.15}kg/cm^2/cm$

   4. $K=\frac{P}{2.5}kg/cm^2/cm$