27.2.2. Mechanistic-Empirical Design

Try these first

1. 1.

   What is mechanistic-empirical design?

   Hint

   Think about both science and real-world observations.

2. 2.

   Define stress in the context of pavement.

   Hint

   Consider forces acting on the pavement.

3. 3.

   What is a key benefit of mechanistic-empirical design?

   • It requires only empirical data
   • It can better predict pavement performance
   • It is cheaper

   Hint

   Consider which option reflects accurate predictions.

4. 4.

   True or False: Empirical data is unnecessary for mechanistic-empirical designs.

   • True
   • False

   Hint

   Think about the role of data in models.

5. 5.

   A new pavement is designed using the mechanistic-empirical approach. Given the empirical data suggests a maximum of 1,000,000 load repetitions before failure, assess how a heavier wheel load would alter this prediction.

   Hint

   Consider how increased load affects material stress.

6. 6.

   Develop a basic mechanistic model predicting pavement behavior under varying loads and discuss the empirical data needed for validation.

   Hint

   Link model predictions to real-life data.