12.10. Problems

Try these first

1. 1.

   What is the coefficient of friction (f) generally suggested by IRC?

   Hint

   Think about safe operating speeds.

2. 2.

   Define camber in pavement design.

   Hint

   Related to the cross slope angle.

3. 3.

   What is the recommended coefficient of longitudinal friction by IRC?

   • 0.1
   • 0.35-0.4
   • 0.5

   Hint

   Consider standard values in design guidelines.

4. 4.

   True or False: Skidding can occur if a vehicle's wheel revolves more than its longitudinal movement.

   • True
   • False

   Hint

   Reflect on vehicle movement mechanics.

5. 5.

   A vehicle is experiencing skidding when turning during rainy conditions. Calculate the minimum speed that can be preserved without skidding given a friction coefficient of 0.25.

   Hint

   Think about how the radius of the curve will affect speed limits.

6. 6.

   Design a cross-section for a new road considering unevenness measurements, estimated traffic loads, and required camber. Present your calculations and design rationale.

   Hint

   Consider the impacts of failing to meet design standards.