29.1.4. Equivalent radius of resisting section

Try these first

1. 1.

   Define equivalent radius in the context of rigid pavement design.

   Hint

   Think about how the shape of the pavement affects its strength.

2. 2.

   What does the variable 'h' represent?

   Hint

   Consider what impacts the slab's ability to carry loads.

3. 3.

   What does the equivalent radius (b) represent in rigid pavements?

   • Effective diameter
   • Equivalent radius of resistive section
   • Thick slab profile

   Hint

   Think about the geometry of the pavement section.

4. 4.

   True or False: A thicker slab generally reduces the equivalent radius.

   • True
   • False

   Hint

   Consider the relationship between slab dimensions and load distribution.

5. 5.

   A rigid pavement slab has a thickness of 15 cm and a wheel load radius of 2 cm. Calculate the equivalent radius and discuss its implications.

   Hint

   Carefully compute using the provided equation.

6. 6.

   Discuss how varying the wheel load distribution from 2 cm to 4 cm affects the equivalent radius while keeping slab thickness constant. What design adjustments might be necessary?

   Hint

   Focus on the relationship between load distribution and slab performance.